Furniture drive device for moving a furniture part supported movably relative to a furniture cabinet

Abstract

A furniture drive device (4) for moving a furniture part (3) supported movably relative to a furniture cabinet (2) includes: a support (9) for mounting to the furniture cabinet (2); an actuating arm assembly (5) arranged on the support (9) and having at least one movably supported actuating arm (5a, 5b, 5c, 5d, 5e) for moving the movable furniture part (3); a spring device (10) for applying a force to the actuating arm assembly (5), the spring device (10) being connected to the actuating arm assembly (5) via at least one acting point (18); a transmission mechanism (35) for transmitting the force of the spring device (10) to the actuating arm assembly (5); a furniture drive device (4) including an adjustment device (19) having at least one adjustment element (19a) supported on a movable member, the adjustment device (19) being capable of adjusting the relative position of at least one acting point (18) with respect to an actuating arm assembly (5) by rotation of the adjustment element (19a); and a furniture drive device (4) including at least one overload protection device (33) which connects the adjustment element (19a) to a transmission mechanism (35) when the adjustment element (19a) is rotated with a torque less than a predetermined torque, and which disconnects the adjustment element (19a) from the transmission mechanism (35) when the adjustment element (19a) is rotated with a torque exceeding the predetermined torque.

Description

[Technical field]

[0001] The present invention relates to a furniture drive device for moving a furniture part supported so as to be movable relative to a furniture cabinet, the device comprising: - supports for mounting on furniture cabinets, - an actuation arm assembly with at least one movably supported actuation arm for moving a movable furniture part arranged on a support, a spring device for applying a force to an actuation arm assembly, the spring device being connected to the actuation arm assembly via at least one point of action; a transmission mechanism for transmitting the force of the spring device to the actuation arm assembly; - an adjustment device comprising at least one rotatably supported adjustment element, the rotation of which allows the relative position of at least one working point with respect to the actuation arm assembly to be adjusted; The present invention relates to a furniture driving device equipped with the same.

[0002] The invention further relates to a piece of furniture comprising a furniture cabinet, a furniture part supported movable relative to the furniture cabinet, and a furniture drive of the type described for moving the movable furniture part.

[0003] The support of such a furniture drive is typically mounted in or on a side wall surface of a furniture cabinet, and the actuating arm assembly of the furniture drive is preloaded by at least one spring device and is connected to the movable furniture part in the assembled state.

[0004] EP 3708753 A1 shows a furniture drive for moving a furniture flap, not of the type mentioned at the outset, in which a coil spring is provided for compensating for the weight of the furniture flap. By adjusting the counter support, this coil spring can be compressed differently, so that the force of the coil spring can be adapted to different weights of the furniture flap. Furthermore, the furniture drive has a torque limiting device, so that the counter support is prevented from binding on the end stop. By rotating the driver element with a tool, the counter support can be adjusted. The torque limiting device limits the torque in a first direction of rotation of the driver element, so that the counter support does not bind on the end stop. In contrast, in a second direction of rotation of the driver element, the torque is fully transmitted.

[0005] CN 106175199 shows a furniture drive device, in which the force of a spring device can be transmitted via a double-arm deflection lever to an actuating arm for moving a furniture flap.

[0006] WO 2018 / 192819 discloses a furniture drive with the generic features. A rotatable tool receptacle is provided in the front end region of the casing of the furniture drive, whereby a spindle nut can be moved along the spindle by rotating the tool receptacle with a tool. A spring package is supported on the spindle nut, and the force of the spring package acting on the actuating arm assembly can be varied by adjustably supporting the spindle nut along the spindle.

[0007] The adjustment device of the furniture drive for adjusting the force of the spring device applied to the actuating arm assembly is usually operated by a rotary tool, for example a screw driver. In the case of an unskilled and / or poor motor skill installer, the action point of the spring device - by turning the rotary tool with a high torque - can be pushed into an end position where it can get stuck by applying a large force. Such a jam is often difficult to remove and damage to the components of the furniture drive is inevitable.

[0008] When the adjustment distance is long, installers are also inclined to operate the adjustment device with a battery-powered screwdriver, which further increases the risk of damage to the furniture drive.

[0009] The object of the invention is to provide a furniture drive of the type mentioned at the outset which avoids the above-mentioned disadvantages.

[0010] This problem is solved according to the invention by the features of patent claim 1. Further advantageous embodiments of the invention are defined in the dependent claims.

[0011] According to the invention, it is envisaged that the furniture drive has at least one overload protection device which connects the adjusting element to the transmission mechanism when the adjusting element is rotated with a torque below a predetermined torque and disconnects the adjusting element from the transmission mechanism when the adjusting element is rotated with a torque above the predetermined torque.

[0012] The proposed overload protection device allows damage-free operation of the adjusting device, especially in the event of incorrect operation by the user: if a predefined torque is exceeded on the adjusting element, the overload protection device separates the adjusting element from the point of application of the spring device from one another.

[0013] According to a possible embodiment of the invention, the overload protection device comprises: - at least one spring element, preferably a compression spring, is provided, and the rotatably supported shaft and the adjustment element can be pressed against each other by the force of the spring element; and / or - at least one tooth arrangement, preferably an end tooth arrangement, arranged on the adjustment element, and / or - at least one shaft rotatably supported and drivable by an adjustment element, the adjustment element being coupled to the shaft when the adjustment element is rotated with a torque below a predetermined torque and being decoupled from the shaft when the adjustment element is rotated with a torque above the predetermined torque; and / or - has at least one rotatable shaft with a longitudinal direction, which shaft is displaceable against the force of a spring element in the longitudinal direction of the shaft when the adjustment element is rotated with a torque above a predetermined torque, and / or - has at least one rotatable shaft with a first tooth arrangement that can mesh with a second tooth arrangement of the adjustment element; and / or - at least one spring element with an opening, in which the at least one spring element and the adjustment element are arranged relative to one another such that the adjustment element is accessible via the opening of the at least one spring element, and / or - has at least one support device in or on which the adjustment element and / or the possibly provided rotatable shaft are rotatably supported.

[0014] A spring element for applying a force to at least one axis, which is separate from the spring device, makes it possible to define the trigger force of the overload protection device and thus the switching action.

[0015] Further details and advantages of the invention are explained in the following description of the drawings. [Brief description of the drawings]

[0016] [Figure 1a]FIG. 1 is a perspective view of a piece of furniture with movable furniture parts. [Figure 1b] FIG. 1 shows an exploded view of a piece of furniture with movable furniture parts. [Figure 2a] FIG. [Figure 2b] FIG. 2 is another perspective view of the furniture drive device; [Figure 3a] FIG. 2 shows the furniture drive in a closed position. [Figure 3b] FIG. 2 shows the furniture drive in an open position. [Figure 4a] FIG. [Figure 4b] FIG. 4b is an enlarged detail of FIG. 4a. [Figure 5a] FIG. 2 shows an adjustment device acting on the point of action. [Figure 5b] FIG. 2 shows an adjustment device acting on the point of action. [Figure 5c] FIG. 2 shows an adjustment device acting on the point of action. [Figure 5d] FIG. 2 shows an adjustment device acting on the point of action. [Figure 6a] FIG. 13 shows a perspective view of an adjustment device acting on the action points in a slightly modified embodiment; [Figure 6b] FIG. 6b is an enlarged detail of FIG. 6a.

[0017] Figure 1a shows a perspective view of a piece of furniture 1 which comprises a furniture cabinet 2, a furniture part 3 supported movable relative to the furniture cabinet 2 and at least one furniture drive 4 for moving the movable furniture part 3. The furniture 1 has a furniture panel 6 in the form of a side wall, an upper surface 7 and a lower surface 8. The furniture part 3 is formed in the illustrated embodiment as a furniture flap 3a which can be lifted relative to the furniture cabinet 2.

[0018] In the illustrated embodiment, the furniture drive 4 is at least partially, preferably substantially completely, integrated into the furniture board 6 of the furniture cabinet 2. Of course, the furniture drive 4 can also be arranged outside the wall thickness of the furniture board 6.

[0019] The movable furniture part 3 is supported for movement between a closed position in which it conceals the furniture cabinet 2 and an open position in which it is raised relative to the furniture cabinet 2.

[0020] Of course, the furniture drive 4 can also be integrated into a horizontally extending furniture panel, i.e. for example in the upper surface 7, in the lower surface 8 and / or in a shelf arranged between the upper surface 7 and the lower surface 8. In such a case, the movable furniture part 3 is supported so as to be pivotable relative to the furniture cabinet 2 about an axis which in the assembled position extends vertically.

[0021] The furniture drive 4 comprises an actuating arm assembly 5 for moving the movable furniture part 3 and at least one spring device 10 (FIG. 1 b ) for applying a force to the actuating arm assembly 5 .

[0022] Figure 1b shows the furniture 1 in an exploded state, in which two preferably identically designed furniture drives 4 are provided for moving the movable furniture parts 3. The furniture drives 4 each have a support 9 which is to be attached to the furniture cabinet 2.

[0023] According to one embodiment, it may be envisaged that in the assembled state, the support 9 is accommodated, at least in certain areas, preferably substantially completely, inside a recess 11 in the side wall formed as the furniture board 6. In the assembled state, the support 9 may be substantially flush with the end face 6a of the furniture board 6.

[0024] The recess 11 is formed, for example, as a blind hole, and during assembly, the support 9 can be inserted from the front (i.e. starting from the narrow end face 6a of the furniture board 6) into the pocket-shaped recess 11 in the furniture board 6.

[0025] The support 9 is provided in its front end region with a cover 12, through which at least one movably supported actuating arm 5a, 5b, 5c, 5d, 5e (FIG. 2a) of the actuating arm assembly 5 can be guided in a relative position.

[0026] 2a shows the furniture drive 4 in a perspective view, in which the support body 9 has at least one housing wall 9a which is designed in a planar manner and can bear against the furniture cabinet 2. The housing wall 9a is provided with a pivotable support part 14 which is supported on the support body 9 so as to be pivotable about a fixed joint axis 13. The spring device 10 can be supported on the fixed joint axis 13, i.e. in a first end region. The spring device 10 can comprise at least one coil spring, preferably at least one compression spring or alternatively a gas compression spring.

[0027] The furniture drive device 4 has a transmission mechanism 35 for transmitting the force of the spring device 10 to the operating arm assembly 5 .

[0028] In the illustrated embodiment, the second end region of the spring device 10 acts on a pressure element 20, which is pivotally connected via an adjustable acting point 18 to an intermediate lever 16 which is preferably pivotable about a fixed joint axis 15.

[0029] The adjustment device 19 allows the force of the spring device 10 on the actuation arm assembly 5 to be adjusted. The adjustment device 19 has an adjustment element 19a rotatable about a rotation axis (R), and the position of the action point 18 of the spring device 10 is adjustable by rotation of the adjustment element 19a about the rotation axis (R) relative to the actuation arm assembly 5, preferably along the thread section 17.

[0030] The thread section 17 has a longitudinal direction (L). The angle between the longitudinal direction (L) of the thread section 17 and the rotation axis (R) of the adjustment element 19a can be changed during the movement of the actuation arm assembly 5. By means of the angularly movable coupling device 25, a rotational movement of the adjustment element 19a can be transmitted to the thread section 17, which is then caused to rotate and, as a result, the action point 18 is moved along the thread section 17.

[0031] The angularly movable coupling device 25 may have at least one elastic element, preferably a bellows, a rubber molded element, a coil spring coupling, and / or at least one transmission, preferably a bevel gear transmission, and / or a joint, preferably a universal joint or a Cardan joint.

[0032] It is preferably provided that the adjustment element 19a of the adjustment device 19, in the assembled state of the furniture drive 4, is arranged in the front area of ​​the support 9 facing the movable furniture part 3, so that the adjustment element 19a can be easily operated from the front by means of a tool.

[0033] In the illustrated embodiment, at least one shaft 28 for driving the thread section 17 is provided, which can be driven by the adjustment element 19a and is supported in or along a guide 30, preferably in an elongated hole, so as to be displaceable relative to the support 9. This makes it possible to at least partially compensate for compensating movements of the components of the furniture drive 4, which are caused by the angularly movable coupling 25.

[0034] The shaft 28 is arranged in or on a support device 29, on which a guide 30 is arranged, and a pin 32, which is fixedly supported on the support 9, engages in the guide 30 of the support device 29. During the compensation movement, the support device 29 is movable relative to the stationary pin 32.

[0035] The actuation arm assembly 5 comprises at least one, and preferably several, actuation arms 5a, 5b, 5c, 5d, 5e for moving the movable furniture part 3. Attached to the movable furniture part 3 is a hardware member 21 having at least one or several attachment points 22 and releasably lockable to the actuation arm 5e of the actuation arm assembly 5. In Figure 2a the locked state between the actuation arm 5e and the hardware member 21 is shown.

[0036] At the front end of the housing wall 9a there is a cover 12 which has at least a laterally projecting flange 12a which in the illustrated embodiment is substantially ring-shaped and forms a depth stop for the support 9 which can rest against the end face 6a of the furniture panel 6.

[0037] Fig. 2b shows the furniture drive 4 of Fig. 2a, in which the support 9 is closed by a second housing wall 9b. The first housing wall 9a and the second housing wall 9b are each designed to abut on the furniture cabinet 2 in a planar manner and together form a substantially rectangular parallelepiped support 9. The housing walls 9a, 9b are arranged parallel to one another at a distance, in which a front opening 23 is formed between the housing walls 9a, 9b. A cover 12 is arranged in the area of ​​this opening 23, allowing the passage of a tool for operating the adjustment device 19.

[0038] 3a shows the furniture drive 4 with the support 9 in a side view. The thread section 17 is arranged on the intermediate lever 16, which is supported pivotably about a joint axis 15, which is fixedly arranged on the support 9. In the shown figure, the application point 18 of the spring device 10 is located in the area adjacent to the joint axis 15 of the intermediate lever 16, so that the spring device 10 exerts a minimum torque on the actuating arm assembly 5. The imaginary connection line between the joint axis 15 of the intermediate lever 16 and the application point 18 of the spring device 10 forms a relatively short lever arm, so that a minimum torque acts on the actuating arm assembly 5.

[0039] The axis of rotation (R) of the adjusting element 19a of the adjusting device 19 and the longitudinal direction (L) of the thread section 17 are at an angle to one another, which angle can be changed during the movement of the actuating arm assembly 5. In the illustrated closed position of the furniture drive 4, due to the angularly movable arrangement of the axis of rotation (R) and the longitudinal direction (L) the actuating arms 5a-5e of the actuating arm assembly 5 together with the spring device 10 and the adjusting device 19 occupy a very compact position relative to one another, the advantages of which can be seen clearly on the basis of Fig. 3a.

[0040] The adjusting element 19a and the rotatable thread section 17 are supported so as to be angularly movable relative to one another, i.e. during the movement of the actuation arm assembly 5, so that the adjusting device 19 for adjusting the force of the spring device 10 and the actuation arm assembly 5 can occupy different positions. The components of the furniture drive 4 can thereby be arranged one above the other and therefore closer together, which allows the furniture drive 4 to be constructed more compactly and allows the adjustment distance of the spring device 10 on the thread section 17 to be increased and a higher power range of the furniture drive 4 to be covered.

[0041] The support 9 may be substantially rectangular in shape and preferably has a ratio of its length (L1) to its height (H1) greater than 1:0.7, preferably greater than 1:0.5. Such a dimensioning allows the height (H1) of the support 9 to be reduced. This allows the height of the recess 11 (FIG. 1b) in the furniture board 6 to be reduced, which requires less manufacturing effort and weakens the furniture board 6 less.

[0042] Figure 3b shows the furniture drive 4 of Figure 3a with a minimum force adjustment of the spring device 10, the actuation arm assembly 5 with the actuation arms 5a-5e being in the open position. The angle between the rotation axis (R) of the adjustment element 19a and the longitudinal direction (L) of the thread section 17 is smaller relative to the closed position shown in Figure 3a.

[0043] The actuating arm assembly 5 has a first actuating arm 5a rotatable about a first joint shaft 26, and at least one second actuating arm 5b supported so as to be rotatable about a second joint shaft 27. The first joint shaft 26 and the second joint shaft 27 are positioned apart from each other in the longitudinal direction (L2) of the support body 9, and the second joint shaft 27 is disposed in a region of the support body 9 further forward than the first joint shaft 26.

[0044] The intermediate lever 16 is directly connected to the second (front) actuating arm 5b via a thrust lever 24, which is preferably formed in an arc. That is to say, the first actuating arm 5a is not directly connected to the thrust lever 24 via a joint shaft, but is slidably guided inside the thrust lever 24. This is clearly shown in FIG. 2a. This allows an improved and direct introduction of forces from the spring device 10 into the actuating arm assembly 5.

[0045] FIG. 4a shows a furniture drive 4 in a perspective view, which has an overload protection device 33 for limiting the maximum torque between the adjustment element 19a of the adjustment device 19 and the point of application 18 of the spring device 10.

[0046] The overload protection device 33 is configured to connect the adjustment element 19a to the transmission mechanism 35 when the adjustment element 19a is rotated with a torque less than a predetermined torque, and to disconnect the adjustment element 19a from the transmission mechanism 35 when the adjustment element 19a is rotated with a torque greater than the predetermined torque.

[0047] In the illustrated embodiment, the overload protection device 33 has at least one spring element 34, for example in the form of a compression spring. The shaft 28 can be pressed against the adjustment element 19a of the adjustment device 19 by the force of the spring element 34. It is preferably envisaged that the shaft 28 can be pressed against the adjustment element 19a of the adjustment device 19 in the axial direction of the shaft 28 by the force of the spring element 34.

[0048] It is preferably envisaged that the rotation axis (R) of the adjustment element 19a and the longitudinal direction (L3) of the at least one shaft 28 extend coaxially with respect to one another.

[0049] The adjusting element 19a and the shaft 28 can be rotatably connected to one another via cooperating teeth 37a, 37b (FIGS. 5a-5d). When the adjusting element 19a is rotated with a torque below a predetermined torque, the adjusting element 19a is connected to the shaft 28. When the adjusting element 19a is rotated with a torque above the predetermined torque, the adjusting element 19a is decoupled from the transmission mechanism 35. In other words, if the torque applied to the adjusting element 19a is excessive, the spring element 34 is compressed, in which case the adjusting element 19a and the shaft 28 can be separated from one another.

[0050] In Fig. 4b the enclosed area of ​​Fig. 4a is shown enlarged. By means of a mounting device 31 with at least one rotatable fastening element 31a the support 9 of the furniture drive 4 can be clamped and fixed inside the recess 11 of the furniture board 6 (Fig. 1b).

[0051] Figure 5a shows a perspective view of an adjustment device 19 for adjusting the position of the action point 18 of the spring arrangement 10. The rotatable adjustment element 19a may have a receiving device 39 (Figure 6b) for a tool, preferably a screw driver, and the action point 18 is adjustable, preferably along the thread section 17, by rotating the receiving device 39 by means of the tool.

[0052] The adjusting element 19a and / or the shaft 28 are rotatably supported on a support device 29. The support device 29 has the already mentioned guide 30, in which a pin 32 of the support body 9 is guided with play.

[0053] According to a possible embodiment of the invention, the overload protection device 33 comprises: - at least one spring element 34, preferably a compression spring, is provided, and the rotatably supported shaft 28 and the adjustment element 19a can be pressed against each other by the force of the spring element 34; and / or - at least one tooth arrangement 37a, preferably an end tooth arrangement, arranged on the adjustment element 19a; and / or - has at least one shaft 28 rotatably supported and drivable by the adjustment element 19a, the adjustment element 19a being coupled to the shaft 28 when the adjustment element 19a is rotated with a torque below a predetermined torque and being decoupled from the shaft 28 when the adjustment element 19a is rotated with a torque above the predetermined torque; and / or - has at least one rotatable shaft 28 with a longitudinal direction (L3), which shaft 28 is displaceable against the force of a spring element (34) in the longitudinal direction (L3) of the shaft (28) when the adjusting element 19a is rotated with a torque above a predetermined torque, and / or - has at least one rotatable shaft 28 with a first tooth row 37b that can mesh with a second tooth row 37a of the adjustment element 19a, - has at least one support device 29 in or on which the adjustment element 19a and / or the possibly provided rotatable shaft 28 are rotatably supported.

[0054] The shaft 28 can be connected to the working point 18, for example, via cooperating tooth rows 38a, 38b, preferably via a bevel gear transmission, preferably via a screw thread section 17.

[0055] 5b shows the connection between the adjusting element 19a and the shaft 28, in which the cooperating teeth 37a, 37b mesh with one another, when the adjusting element 19a is rotated with a torque below a predetermined torque.

[0056] 5c shows the case of overload when the adjusting element 19a is rotated with a torque above a certain torque. When the critical torque is exceeded, the adjusting element 19a and the shaft 28 are rotated relative to one another, in which case the adjusting element 19a and the shaft 28 are axially separated from one another by the cooperating teeth 37a, 37b, and the spring element 34 is compressed. This allows the shaft 28 to be decoupled from the rotational movement of the adjusting element 19a.

[0057] Figure 5d shows the circled area of ​​figure 5c in an enlarged view, where the teeth 37a of the adjusting element 19a and the teeth 37b of the shaft 28 are not intermeshing with each other, which corresponds to an overload situation, where the shaft 28 is decoupled from the rotational movement of the adjusting element 19a.

[0058] 6a shows an adjusting device 19 acting on the acting point 18 in a slightly modified embodiment. The adjusting element 19a and the shaft 28 are rotatably accommodated inside a support device 29 and are pressed against one another by the force of a spring element 34 in the form of a compression spring.

[0059] The spring element 34 defines an opening 34a, whereby the spring element 34 and the adjustment element 19a are arranged relative to one another such that the adjustment element 19a is accessible via the opening 34a of the spring element 34.

[0060] If the torque applied to the adjusting element 19a is excessive, the teeth 37a, 37b will disengage from one another after overcoming the force of the spring element 34, in which case the spring element 34 will be compressed. If the adjusting element 19a is again rotated with a torque less than the predetermined torque, the adjusting element 19a will again be rotatably coupled to the shaft 28 by the force of the spring element 34.

[0061] In figure 6b the area enclosed in figure 6a is shown in an enlarged view. The adjusting element 19a of the adjusting device 19 has a receiving device 39 for a tool, preferably a screwdriver or a rechargeable screwdriver.

[0062] The receiving device 39 may have, for example, a cross-slit shape (e.g. a posidriv profile), a square profile, a hexagonal profile or a hexagonal star shape (e.g. a torx profile), in which case a secure form connection for transmitting torque between the tool and the adjusting element 19a may be formed.

[0063] The furniture drive 4 may have at least one damping device, for example a hydraulic piston-cylinder unit, for damping the movement of the actuating arm assembly 5. This allows the movement of the movable furniture part 3 towards the closed end position and / or towards the open end position to be damped.

Claims

1. A furniture drive device (4) for moving a furniture part (3) supported so as to be movable relative to a furniture cabinet (2), a support (9) for attachment to a furniture cabinet (2); an actuation arm assembly (5) arranged on said support (9) and comprising at least one movably supported actuation arm (5a, 5b, 5c, 5d, 5e) for moving said movable furniture part (3); a spring device (10) for applying a force to the actuation arm assembly (5), the spring device (10) being connected to the actuation arm assembly (5) via at least one action point (18); a transmission mechanism (35) for transmitting the force of the spring device (10) to the actuation arm assembly (5); an adjustment device (19) comprising at least one rotatably supported adjustment element (19a), the rotation of which allows the relative position of the at least one action point (18) with respect to the actuation arm assembly (5) to be adjusted; Equipped with The furniture drive device (4) has at least one overload protection device (33), which connects the adjustment element (19a) to the transmission mechanism (35) when the adjustment element (19a) is rotated with a torque less than a predetermined torque, and disconnects the adjustment element (19a) from the transmission mechanism (35) when the adjustment element (19a) is rotated with a torque greater than the predetermined torque.

2. 2. The furniture drive (4) according to claim 1, wherein the overload protection device (33) comprises at least one rotatably supported shaft (28).

3. The overload protection device (33) has at least one spring element (34), and the rotatably supported shaft (28) and the adjustment element (19a) can be pressed against each other by the force of the spring element (34), and / or the at least one rotatably supported shaft (28) being drivable by the adjustment element (19a), the adjustment element (19a) being coupled to the shaft (28) when the adjustment element (19a) is rotated with a torque less than a predetermined torque and being decoupled from the shaft (28) when the adjustment element (19a) is rotated with a torque greater than the predetermined torque; and / or the at least one rotatable shaft (28) has a longitudinal direction (L3), the shaft (28) being displaceable against the force of the spring element (34) in the longitudinal direction (L3) of the shaft (28) when the adjustment element (19a) is rotated with a torque above a predetermined torque; and / or the at least one rotatable shaft (28) has a first tooth row (37b) that can mesh with a second tooth row (37a) of the adjustment element (19a); 3. Furniture drive device (4) according to claim 2.

4. A furniture drive device (4) as described in claim 2, wherein the overload protection device (33) has a compression spring.

5. The overload protection device (33) is and / or having at least one tooth row (37a) arranged on said adjustment element (19a); and / or having at least one spring element (34) with an opening (34a), said at least one spring element (34) and said adjustment element (19a) being arranged relative to one another such that said adjustment element (19a) is accessible via said opening (34a) of said at least one spring element (34). at least one support device (29) in or on which the adjustment element (19a) is rotatably supported, Furniture drive (4) according to any one of the preceding claims.

6. A furniture drive device (4) as described in any one of claims 1 to 5, wherein the overload protection device (33) has at least one tooth row (37a) arranged on the adjusting element (19a), the tooth row (37a) being an end tooth row.

7. A furniture drive device (4) as described in any one of claims 1 to 6, wherein the overload protection device (33) has at least one support device (29) in or on which the shaft (28) is rotatably supported.

8. 8. The furniture drive (4) according to claim 1, wherein the furniture drive (4) has at least one thread section (17) having a longitudinal direction (L), and the action point (18) of the spring device (10) is adjustable along the thread section (17) by rotating the adjustment element (19a) around a rotation axis (R).

9. 9. The furniture drive device (4) according to claim 8, wherein the rotation axis (R) of the adjustment element (19a) and the longitudinal direction (L) of the thread section (17) are at an angle to each other, and the angle between the rotation axis (R) of the adjustment element (19a) and the longitudinal direction (L) of the thread section (17) can be changed during movement of the operating arm assembly (5).

10. 10. The furniture drive (4) according to claim 8 or 9, characterized in that the furniture drive (4) has at least one angularly movable coupling device (25) for transmitting the rotational movement of the adjusting element (19a) into a rotational movement of the thread section (17).

11. 11. The furniture drive (4) according to claim 10, wherein the angularly movable coupling (25) comprises at least one elastic element and / or at least one transmission and / or joint.

12. A furniture drive device (4) as described in claim 10 or 11, wherein the angularly movable connecting device (25) has at least one elastic member, which is a bellows, a rubber molded element or a coil spring coupling.

13. A furniture drive device (4) as described in any one of claims 10 to 12, wherein the angularly movable connecting device (25) has at least one transmission device, which is a bevel gear transmission device.

14. A furniture drive device (4) as described in any one of claims 10 to 13, wherein the angularly movable connecting device (25) has a joint, which is a universal joint or a Cardan joint.

15. 15. The furniture drive device (4) according to claim 1, wherein the adjustment element (19a) of the adjustment device (19) faces the movable furniture part (3) in the assembled state of the furniture drive device (4) and is arranged in the front region of the support (9).

16. 16. The furniture drive device according to claim 1, wherein the spring device (10) is supported at a first end region on the support (9) and at a second end region on the application point (18).

17. 17. Furniture drive device according to any one of the preceding claims, characterized in that the spring device (10) comprises at least one coil spring.

18. The furniture drive device as described in claim 17, wherein the at least one coil spring is at least one compression spring.

19. 19. The furniture drive device according to claim 1, wherein the support (9) of the furniture drive device (4) is configured so that, when assembled to the furniture board (6), at least in a predetermined area, it is received inside the furniture board (6).

20. A furniture drive device as described in claim 19, wherein the support (9) of the furniture drive device (4) is formed so as to be substantially completely contained inside the furniture board (6) when assembled to the furniture board (6).

21. 21. Furniture drive device according to any one of the preceding claims, characterized in that the support (9) is substantially rectangular in shape.

22. A furniture drive device as described in claim 21, wherein the ratio of the length (L1) of the support (9) to the height (H1) of the support (9) is greater than 1:0.

7.

23. A furniture drive device as described in claim 21, wherein the ratio of the length (L1) of the support (9) to the height (H1) of the support (9) is greater than 1:0.

5.

24. 24. The furniture drive according to claim 1, wherein the action point (18) acts on an intermediate lever (16) of the furniture drive (4), which is pivotably supported on the support (9).

25. 25. The furniture drive device according to claim 24, wherein the actuating arm assembly (5) comprises a first actuating arm (5a) rotatable about a first joint axis (26) and at least one second actuating arm (5b) supported so as to be rotatable about a second joint axis (27), the first joint axis (26) and the second joint axis (27) being positioned spaced apart from each other in the longitudinal direction (L2) of the support (9), the second joint axis (27) being arranged in a region of the support (9) further forward than the first joint axis (26), and the intermediate lever (16) being directly connected to the second actuating arm (5b) via a thrust lever (24).

26. 26. Furniture drive according to claim 1, characterized in that the adjustment element (19a) of the adjustment device (19) has a receiving device (39) for a tool.

27. ​​The furniture drive device of claim 26, wherein the tool is a screw driver.

28. A piece of furniture (1) comprising a furniture cabinet (2), a furniture part (3) supported so as to be movable relative to the furniture cabinet (2), and at least one furniture drive device (4) according to any one of claims 1 to 27 for moving the movable furniture part (3).

29. 29. The furniture according to claim 28, wherein the furniture cabinet (2) has a furniture board (6) for mounting a support (9), and the support (9) of the furniture drive (4) is accommodated, at least in a predetermined area, inside a recess (11) of the furniture board (6).

30. Furniture as described in claim 29, wherein the support (9) of the furniture drive device (4) is substantially completely accommodated inside the recess (11) of the furniture board (6).

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