A furniture drive device for moving furniture parts that are movably supported relative to a furniture cabinet.

Abstract

A furniture drive device (4) for moving a furniture part (3) movably supported relative to a furniture cabinet (2), comprising: an adjusting device (19) having at least one adjusting element (19a) rotatably supported; a transmission mechanism (35) for transmitting the force of the adjusting element (19a); at least one overload protection device (33), which, when the adjusting element (19a) is rotated with a torque below a predetermined limit torque, connects the adjusting element (19a) to the transmission mechanism (35), and when the adjusting element (19a) is rotated with a torque exceeding the limit torque, separates the adjusting element (19a) from the transmission mechanism (35), preferably thereby preventing torque transmission between the adjusting element (19a) and the transmission mechanism (35), the overload protection device (33) having a first component (37a) having a longitudinal direction (L3) and at least one second component (37b), the second component being movable relative to the first component (37a) in a direction (X) transverse to the longitudinal direction (L3) of the first component (37a) under a torque exceeding the limit torque.

Description

Technical Field

[0001] The present invention relates to a furniture drive device for moving a furniture part that is movably supported relative to a furniture cabinet, - an adjustment device having at least one adjuster element rotatably supported, - a transmission mechanism for transmitting the force of the adjuster element, - at least one overload protection device, which connects the adjuster element to the transmission mechanism when the adjuster element is rotated with a torque below a predetermined limit torque, and separates the adjuster element from the transmission mechanism when the adjuster element is rotated with a torque exceeding the limit torque, preferably thereby preventing torque transmission between the adjuster element and the transmission mechanism, the overload protection device relates to a furniture drive device including the same.

[0002] Furthermore, the present invention relates to a furniture including a furniture cabinet, a furniture part movably supported relative to the furniture cabinet, and a furniture drive device of the described type.

[0003] Austrian Patent Application Publication No. 524391 discloses a furniture drive comprising an actuation arm assembly for moving a movable furniture part and an adjustment device for adjusting the force on the actuation arm assembly. The adjustment device includes a rotatable adjustment element, and the force of the spring device on the actuation arm assembly is adjustable by the rotation of the adjustment element. The furniture drive further includes an overload protection device, which isolates the adjustment element from the transmission mechanism if the adjustment element is rotated with a torque exceeding a predetermined limit torque. Such an overload protection device is particularly useful when the adjustment element is driven with high torque by a rotary tool in the form of a rechargeable screwdriver. The overload protection device has a rotatable shaft with a first set of teeth, which is pressed against a corresponding second set of teeth of the adjustment element in the axial direction of the shaft by the force of the spring element. The disadvantage in this case is that both sets of teeth can be manufactured in a relatively complex manner. For a long service life of the overload protection device, it is desirable that the teeth be made of metal, which must be milled and hardened. Furthermore, only very small errors are permitted in the two collaborating sets of teeth, and therefore these sets of teeth must be manufactured with extreme precision. This, of course, leads to increased costs in the mass production of furniture drive systems.

[0004] A furniture drive system equipped with an overload protection device is also disclosed in European Patent Application Publication No. 3708753 and International Publication No. 2020 / 232483.

[0005] International Publication No. 2020 / 232485 discloses a furniture drive mechanism for moving a movable supported furniture flap, in which the casing of the furniture drive mechanism can be incorporated into a furniture panel of a furniture cabinet.

[0006] The object of the present invention is to provide a furniture drive device of the type described at the beginning that avoids the aforementioned drawbacks.

[0007] This problem is solved by the features of claim 1 according to the present invention. Further advantageous embodiments of the present invention are provided in the dependent claims.

[0008] According to the present invention, the overload protection device has a first component having a longitudinal direction and at least one second component, and the second component is assumed to be movable relative to the first component in a direction lateral to the longitudinal direction of the first component when the torque exceeds the limit torque.

[0009] In other words, the overload protection device has at least two components that are movable relative to each other, and these components are connected to each other in a first operating position, and torque is transmitted between these components.

[0010] If the adjustment element is rotated with a torque exceeding the limit torque, the second component can move to a second operating position laterally (i.e., radially) relative to the longitudinal direction of the first component, in which case the two components are separated from each other so that no torque is transmitted. This has the advantage that the two components of the overload protection device do not need to be pressed against each other axially by a spring element. Instead, in the event of overload, the second component is displaced radially relative to the longitudinal axis of the first component.

[0011] The first component and the second component may be formed as separate components or as a single unit. Preferably, the first component and the second component may be connected to each other via at least one film hinge.

[0012] According to the embodiment, it may be assumed that at least one holding element is provided that holds the first component and the second component in a connected position relative to each other under torque below the limit torque.

[0013] In another embodiment, at least one retaining element may include at least one spring element that applies force to a second component in the direction of a first component.

[0014] Furniture drive devices can also be used to drive movable furniture parts, in particular doors, flaps, or drawers, or other movable elements, such as windows.

[0015] Further details and advantages of the present invention will be described with reference to the following drawings. [Brief explanation of the drawing]

[0016] [Figure 1a] This is a perspective view showing furniture with movable parts. [Figure 1b] This is an exploded view showing furniture with movable parts. [Figure 2a] This is a perspective view of a furniture drive mechanism. [Figure 2b] Another perspective view of the furniture drive mechanism. [Figure 3a] This diagram shows the furniture drive mechanism in the closed position. [Figure 3b] This diagram shows the furniture drive mechanism in the open position. [Figure 4a] This figure shows a regulator equipped with an overload protection device. [Figure 4b] Another diagram showing a regulator equipped with an overload protection device. [Figure 5a] This diagram shows the overload protection device located at the connection point. [Figure 5b] This is another diagram showing the overload protection device at the connection point. [Figure 5c] This is another diagram showing the overload protection device at the connection point. [Figure 5d] This is another diagram showing the overload protection device at the connection point. [Figure 6a] This diagram shows the overload protection device in its separated position. [Figure 6b]Another view showing the overload protection device in the separation position. [Figure 6c] Exploded view of the overload protection device.

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

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

[0019] The movable furniture part 3 is movably supported between a closed position that shields the furniture cabinet 2 and an open position that is lifted relative to the furniture cabinet 2.

[0020] Of course, the furniture drive device 4 can also be incorporated into a horizontally extending furniture panel, that is, for example, into the upper surface 7, into the lower surface 8, and / or into a shelf panel 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 extending vertically in the assembled position.

[0021] The furniture drive device 4 has an actuating arm assembly 5 for moving the movable furniture part 3 and at least one spring device 10 (Figure 1b) for loading the actuating arm assembly 5 with force.

[0022] Figure 1b shows an exploded view of furniture 1, in which two preferably identically formed furniture drive devices 4 are provided for moving the movable furniture parts 3. Each furniture drive device 4 has one casing 9 to be attached to the furniture cabinet 2.

[0023] In the embodiment, it is assumed that, in the assembled state, the casing 9 is housed inside the recess 11 of the side wall formed as the furniture panel 6, at least in a predetermined area, preferably substantially completely. In the assembled state, the casing 9 may be substantially flush with the end face 6a of the furniture panel 6.

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

[0025] A cover 12 is provided at the front end region of the casing 9, and at least one movable supported actuation arm 5a, 5b, 5c, 5d, 5e (Figure 2a) of the actuation arm assembly 5 can be guided through the cover 12 in relative position.

[0026] Figure 2a shows a perspective view of the furniture drive unit 4, the casing 9 having at least one casing wall 9a formed in a planar shape and capable of contacting the furniture cabinet 2. The casing wall 9a is provided with a swivel support portion 14, which is swivelly supported about a fixed joint axis 13 in the casing 9. The spring device 10 is, i.e., supportable on the fixed joint axis 13 in the first end region. The spring device 10 may include at least one coil spring, preferably at least one compression spring, or alternatively a gas compression spring.

[0027] The furniture drive unit 4 has, for example, a transmission mechanism 35 which can be provided to transmit force from the spring device 10 to the actuating arm assembly 5.

[0028] In the illustrated embodiment, the second end region of the spring device 10 acts on the pressing member 20, which is pivotally connected via an adjustable operating point 18 to an intermediate lever 16 that is preferably rotatable about a stationary joint axis 15.

[0029] The adjustment device 19 allows adjustment of the force of the spring device 10 on the actuating arm assembly 5. The adjustment device 19 has an adjustment element 19a that is rotatable about a rotation axis R, and the position of the actuating part 18 of the spring device 10 can be adjusted relative to the actuating arm assembly 5, preferably along the screw thread section 17, by rotating the adjustment element 19a about the rotation axis R.

[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 operating arm assembly 5. The rotational motion of the adjustment element 19a can be transmitted to the thread section 17 by the angularly movable coupling device 25, thereby causing the thread section 17 to rotate, and thereby causing the point of action 18 to move along the thread section 17.

[0031] The angularly movable coupling device 25 may have at least one elastic member, preferably a bellows, a rubber molded element, a coil spring coupling, and / or at least one transmission device, preferably a bevel gear transmission device, and / or a joint, preferably a universal joint or a cardan joint. The angularly movable coupling device 25 allows the components of the furniture drive device 4 to be arranged so that they overlap each other inward and outward, thus enabling a particularly compact arrangement.

[0032] Preferably, the adjustment element 19a of the adjustment device 19 is assumed to face the movable furniture part 3 and be located in the front area of ​​the casing 9 when assembled with the furniture drive device 4. This allows the adjustment element 19a to be easily operated from the front using a tool.

[0033] In the illustrated embodiment, there is at least one shaft 28 for driving the threaded section 17, which is drivable by the adjustment element 19a, and the at least one shaft 28 is supported so as to be slidable relative to the casing 9 in the guide 30, preferably in or along the guide 30, preferably in the elongated hole. This can at least partially offset the compensatory motion of the components of the furniture drive unit 4 caused by the angularly movable coupling device 25.

[0034] The shaft 28 is located within or on the support device 29, the guide 30 is located on the support device 29, and a pin 32, which is fixedly supported by the casing 9, engages with the guide 30 of the support device 29. During compensatory motion, the support device 29 is movable relative to the stationary pin 32.

[0035] The actuation arm assembly 5 includes at least one actuation arm 5a, 5b, 5c, 5d, 5e, preferably a plurality of actuation arms 5a, 5b, 5c, 5d, 5e, for moving the movable furniture portion 3. A metal fitting member 21 is attached to the movable furniture portion 3, in which case the metal fitting member 21 has at least one or more mounting points 22, which can be detachably locked to the actuation arm 5e of the actuation arm assembly 5. Figure 2a shows the locked state between the actuation arm 5e and the metal fitting member 21.

[0036] A cover 12 is provided at the front end of the casing wall 9a, and this cover has at least one flange 12a projecting laterally. In the illustrated embodiment, the flange 12a is substantially ring-shaped and forms a depth-direction stopper for the casing 9 that can abut against the end face 6a of the furniture board 6.

[0037] Figure 2b shows the furniture drive device 4 of Figure 2a, in which case the casing 9 is closed by the second casing wall 9b. The first casing wall 9a and the second casing wall 9b are each formed planarly so as to be in contact with the furniture cabinet 2, and together they form a substantially rectangular parallelepiped casing 9. The casing walls 9a and 9b are positioned parallel to each other with a gap between them, and in this case, a front opening 23 is formed between the casing walls 9a and 9b.

[0038] A cover 12 is positioned in the area of ​​this opening 23, allowing a tool for operating the adjustment device 19 to pass through.

[0039] Figure 3a shows a side view of a furniture drive unit 4 with a casing 9. The thread section 17 is located on an intermediate lever 16, which is pivotably supported about a joint shaft 15 fixed to the casing 9. In the shown drawing, the point of action 18 of the spring device 10 is located in the region adjacent to the joint shaft 15 of the intermediate lever 16, so that the spring device 10 applies minimal torque to the actuating arm assembly 5. The imaginary connection line between the joint shaft 15 of the intermediate lever 16 and the point of action 18 of the spring device 10 forms a relatively short lever arm, thereby applying minimal torque to the actuating arm assembly 5.

[0040] The rotation axis R of the adjustment element 19a of the adjustment device 19 and the longitudinal direction L of the screw thread section 17 are at an angle to each other, and this angle can be changed during the movement of the operating arm assembly 5. In the illustrated closed position of the furniture drive device 4, the operating arms 5a to 5e of the operating arm assembly 5, together with the spring device 10 and the adjustment device 19, occupy an extremely compact position relative to each other, based on the angularly movable arrangement of the rotation axis R and the longitudinal direction L, and the advantages of this structure are clearly shown in Figure 3a.

[0041] The adjustment element 19a and the rotatable thread section 17 are supported such that they can move angularly relative to each other during the movement of the actuating arm assembly 5, thereby allowing the adjustment device 19 for adjusting the force of the spring device 10 and the actuating arm assembly 5 to occupy different positions from each other. The components of the furniture drive unit 4 can thus be arranged to overlap each other internally and externally, and therefore to be closely spaced. This allows the furniture drive unit 4 to be configured more compactly, the adjustment distance of the spring device 10 in the thread section 17 to be increased, and a higher output range of the furniture drive unit 4 to be covered.

[0042] The casing 9 may be formed in a substantially rectangular shape, and preferably, the ratio of the length L1 of the casing 9 to the height H1 of the casing 9 is assumed to be greater than 1:0.7, and more preferably greater than 1:0.5. With such dimensions, the height H1 of the casing 9 can be reduced. As a result, the height of the recess 11 (Figure 1b) in the furniture board 6 can also be set to a smaller dimension, the effort required to manufacture the recess 11 is minimal, and the weakening of the furniture board 6 is also reduced.

[0043] Figure 3b shows the furniture drive device 4 of Figure 3a with the force adjustment of the spring device 10 at its minimum, and the actuation arm assembly 5, which includes actuation arms 5a to 5e, is in the open position. It can be seen that the angle between the rotation axis R of the adjustment element 19a and the longitudinal direction L of the screw thread section 17 is smaller than that of the closed position shown in Figure 3a.

[0044] The actuation arm assembly 5 includes a first actuation arm 5a that is pivotable about a first joint axis 26, and at least one second actuation arm 5b that is pivotably supported about a second joint axis 27. The first joint axis 26 and the second joint axis 27 are spaced apart from each other in the longitudinal direction L2 of the casing 9, and the second joint axis 27 is located in a region in front of the casing 9 than the first joint axis 26.

[0045] The intermediate lever 16 is directly connected to the second (front) actuating arm 5b, preferably via a thrust lever 24 formed in an arc shape. That is, 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 Figure 2a. This allows for improved direct force introduction from the spring device 10 into the actuating arm assembly 5.

[0046] Figure 4a shows an adjustment device 19, which comprises a rotatable adjustment element 19a and an overload protection device 33. The overload protection device 33 is configured such that when the adjustment element 19a is rotated with a torque below a predetermined limit torque, the adjustment element 19a is connected to the transmission mechanism 35. When the adjustment element 19a is rotated with a torque exceeding the limit torque, the adjustment element 19a can be separated from the transmission mechanism 35 by the overload protection device 33.

[0047] The adjustment element 19a can be driven by a rotary tool 36, such as a rechargeable screwdriver. The rotational motion of the adjustment element 19a can be transmitted to the shaft 28, in which case the threaded section 17 can be rotated via an angularly movable coupling device 25. This allows the point of action 18 of the spring device 10 to move along the threaded section 17. In the illustrated embodiment, the threaded section 17 is supported by an intermediate lever 16 that is pivotable about the joint shaft 15.

[0048] Figure 4b shows the diagram according to Figure 4a, in which the casing portion is not shown, and therefore the overload protection device 33 is shown in more detail. The overload protection device 33 has a first component 37a having a longitudinal direction L3 and a second component 37b, and these components are movable relative to each other between a connected position and a disconnected position.

[0049] When the adjustment element 19a is rotated with a torque less than a predetermined limit torque, the adjustment element 19a is connected to the transmission mechanism 35.

[0050] If the adjustment element 19a is rotated beyond the limit torque, the adjustment element 19a can be separated from the transmission mechanism 35 because the second component 37b is movable relative to the first component 37a in a direction X lateral to the longitudinal direction L3 of the first component 37a.

[0051] According to possible embodiments, the first component 37a and / or the second component 37b are -Formed substantially cylindrical in at least a predetermined section, and / or - Together they form a substantially cylindrical shape, and / or - Made from plastic and / or - Manufactured using injection molding It is reasonable to assume that this will happen.

[0052] The two components 37a and 37b may be formed as separate components 37a and 37b. According to an alternative embodiment, the two components 37a and 37b may be connected to each other via at least one film hinge 39.

[0053] In the illustrated embodiment, at least one retaining element 38 is provided that holds the first component 37a and the second component 37b in a connected position relative to each other under torque below the limit torque.

[0054] At least one retaining element 38 may include at least one spring element 38a that applies force to the second component 37b in the direction of the first component 37a, preferably this spring element 38a - Formed in a ring shape in at least a predetermined section, and / or - Formed as an O-ring, and / or -Formed in a hollow cylindrical shape in at least a predetermined section, and / or It has a width of -0.1 mm to 3.0 mm, preferably 2.0 mm, and / or -Having a wall thickness of -0.1 mm to 2.0 mm, preferably 1.0 mm, and / or - Having an outer diameter of less than 8.0 mm, preferably less than 7.5 mm, and particularly preferably 7.0 mm or less, and / or - Made of plastic, preferably POM and / or TPU, and / or - Manufactured by injection molding, and / or - At least within a predetermined section, it is preferably elastically expandable and contractible in the radial direction.

[0055] In the illustrated embodiment, the first component 37a of the overload protection device 33 is formed integrally with the shaft 28. However, the component 37a and the shaft 28 may be formed as separate components.

[0056] The adjustment element 19a of the adjustment device 19 can be formed integrally with at least one component 37a, 37b, preferably both component 37a, 37b. Therefore, the arrangement of a separate adjustment element 19a from the component 37a, 37b can be omitted. However, of course, the adjustment element 19a can also be provided separately from the component 37a, 37b.

[0057] In the embodiment, the retaining element 38 is supported in at least a predetermined section so as to be slidable relative to the first component 37a and / or the second component 37b in the longitudinal direction L3 of the first component 37a, preferably in this case the limit torque is assumed to be adjustable by the sliding of the retaining element 38.

[0058] According to the examples, the limit torque may be assumed to be 0.5 Nm to 4.0 Nm, preferably 0.8 Nm to 1.2 Nm.

[0059] Figures 5a to 5d show the overload protection device 33 from various perspectives.

[0060] Figure 5a shows a perspective view of both components 37a and 37b of the overload protection device 33, in which the rotary tool 36 is introduced into both components 37a and 37b. The rotation of the rotary tool 36 makes it possible to drive at least one of the two components 37a and 37b.

[0061] The first component 37a may be formed integrally with the shaft 28. Alternatively, the first component 37a and the shaft 28 may be formed as separate elements.

[0062] The first component 37a may have at least one set of teeth 41, which allows the rotational motion of the first component 37a to be transmitted to another component of the transmission mechanism 35 of the furniture drive device 4.

[0063] The first component 37a and the second component 37b may be formed as separate components 37a and 37b. Alternatively, both components 37a and 37b may be formed as a single unit.

[0064] For example, it may be assumed that the first component 37a and the second component 37b are connected to each other via at least one film hinge 39.

[0065] The holding element 38 can hold both components 37a and 37b in a connected position relative to each other under torque below the limit torque, and in this connected position, torque can be transmitted to the shaft 28.

[0066] The adjustment element 19a of the adjustment device 19 may have at least one operating contour 40, preferably in this case the operating contour 40 is -Having a hexalobular profile in at least one of the specified categories, and / or Having a diameter of -3.86 mm or less, and / or - Displaced only in the first component 37a, and / or - Arranged in at least a predetermined area in the first component 37a, and arranged in at least a predetermined area in the second component 37b, and / or - It is located on the end face of the adjustment element.

[0067] Figure 5b is a cross-sectional view showing an embodiment of the overload protection device 33 according to Figure 5a. The rotary tool 36 introduced into both components 37a and 37b can be recognized, and in this case, only the first component 37a has an operating contour 40 for the rotary tool 36. In contrast, the second component 37b has a circular inner contour 42. Therefore, the rotation of the rotary tool 36 is transmitted only to the first component 37a. This allows for the transmission of a smaller torque, thus reducing the limit torque of the overload protection device 33 for various applications.

[0068] Figure 5c shows an embodiment of the overload protection device 33, in which the retaining element 38 is located at a rearward terminal position relative to both components 37a and 37b.

[0069] The retaining element 38 may be slidably applied relative to the first component 37a and / or the second component 37b by at least one operating device 43. This adjusts the limit torque of the overload protection device 33.

[0070] According to possible embodiments of the present invention, -At least one operating device 43 is operable from a direction parallel to and / or lateral to the longitudinal direction L3 of the first component 37a, and / or - The furniture drive unit 4 has a casing 9, the overload protection device 33 is located inside the casing 9, and the retaining element 38 is operable from outside the casing 9 via the operating device 43. It is reasonable to assume that this will happen.

[0071] Preferably, if the furniture drive device 4 is located on or within the furniture panel 6, the retaining element 38 may be directly accessible for manual operation from the end face of the furniture panel 6 via the operating device 43.

[0072] The operating device 43 may have, for example, a sliding and / or rotatable operating element for adjusting the position of the retaining element 38. The operating element of the operating device 43 may be located, for example, on the casing 9 of the furniture drive device 4, preferably on the front end face of the casing 9.

[0073] Figure 5d shows an embodiment of the overload protection device 33 according to Figure 5c, in which case the retaining element 38, preferably in the form of a spring element 38a, is located at the front end relative to both components 37a and 37b. At the position in Figure 5d, a higher torque can be transmitted compared directly with Figure 5c.

[0074] Figure 6a shows a perspective view of the overload protection device 33 in the separated position, in which case torque transmission is interrupted. The rotating tool 36 introduced into both components 37a and 37b can be seen, in which case the rotating tool 36 is being rotated with a torque exceeding a predetermined limit torque.

[0075] In this case, the rotary tool 36 slides away from the operating contour 40 of the first component 37a, and the projection of the rotary tool 36 is no longer engaged with the corresponding recess of the operating contour 40. After the holding force defined by the retaining element 38 is released, the second component 37b is lifted away from the first component 37a in direction X, thereby interrupting the transmission of torque.

[0076] The first component 37a and the second component 37b are positioned in a connected position relative to each other under torques below the limit torque, and are positioned in a separated position under torques above the limit torque. In the separated position, the two components 37a and 37b are separated from each other by a larger distance in the lateral direction X with respect to the longitudinal direction L3 of the first component 37a than they are in the connected position.

[0077] Figure 6b shows a cross-sectional view of the overload protection device 33 according to Figure 6a. The second component 37b is moved relative to the first component 37a in a direction X lateral to the longitudinal direction L3 of the first component 37a, while forming a gap by the difference value ΔX when the torque exceeds the allowable limit, and it can be seen from the drawing that the rotary tool 36 is no longer engaged with the operating contour 40 of the first component 37a.

[0078] Figure 6c shows an exploded view of the overload protection device 33. The first component 37a may have at least one notch 44, and the second component 37b may be arranged within this notch in at least a predetermined area. However, the arrangement of the film hinge 39 for pivotally connecting the two components 37a and 37b can basically be omitted.

[0079] The first component 37a and / or the second component 37b may be provided with at least one stopper element 45 that restricts the movement of the retaining element 38 in the longitudinal direction L3 of the first component 37a.

Claims

1. A furniture drive device (4) for moving a furniture part (3) that is movably supported relative to a furniture cabinet (2), - An adjustment device (19) comprising at least one rotatably supported adjustment element (19a), - A transmission mechanism (35) for transmitting the force of the adjustment element (19a), - At least one overload protection device (33), wherein the overload protection device (33) connects the adjustment element (19a) to the transmission mechanism (35) when the adjustment element (19a) is rotated with a torque less than a predetermined limit torque, and disconnects the adjustment element (19a) from the transmission mechanism (35) when the adjustment element (19a) is rotated with a torque exceeding the limit torque, In a furniture drive device (4) including, The overload protection device (33) has a first component (37a) having a longitudinal direction (L3) and at least one second component (37b), wherein the second component is movable relative to the first component (37a) in a direction (X) lateral to the longitudinal direction (L3) of the first component (37a) when the torque exceeds the limit torque. A furniture drive device (4) characterized by the following.

2. The furniture drive device (4) according to claim 1, wherein the overload protection device (33) connects the adjustment element (19a) to the transmission mechanism (35) when the adjustment element (19a) is rotated with a torque less than a predetermined limit torque, and disconnects the adjustment element (19a) from the transmission mechanism (35) when the adjustment element (19a) is rotated with a torque exceeding the limit torque, thereby preventing torque transmission between the adjustment element (19a) and the transmission mechanism (35).

3. The first component (37a) and / or the second component (37b) are - Formed substantially cylindrical in at least a predetermined section, and / or - Together they form a substantially cylindrical shape, and / or - Made from plastic, The furniture drive device (4) according to claim 1.

4. The furniture drive device (4) according to claim 1, wherein the first component (37a) has at least one notch (44) and the second component (37b) can be arranged in at least a predetermined section within the notch.

5. The furniture drive device (4) according to claim 1, wherein the first component (37a) and the second component (37b) are formed as separate components (37a, 37b) or are formed integrally together.

6. The furniture drive device (4) according to claim 5, wherein the first component (37a) and the second component (37b) are connected to each other via at least one film hinge (39).

7. The furniture drive device (4) according to claim 1, further comprising at least one holding element (38) that holds the first component (37a) and the second component (37b) in a connected position relative to each other under a torque less than the limit torque.

8. The furniture drive device (4) according to claim 7, wherein the first component (37a) and / or the second component (37b) are provided with at least one stopper element (45) that restricts the movement of the retaining element (38) in the longitudinal direction (L3) of the first component (37a).

9. The furniture drive device (4) according to claim 7, wherein the at least one retaining element (38) includes at least one spring element (38a) that applies force to the second component (37b) in the direction of the first component (37a).

10. The spring element (38a) is - Formed in a ring shape in at least a predetermined section, and / or - Formed as an O-ring, and / or - Formed in a hollow cylindrical shape in at least a predetermined section, and / or It has a width of -0.1 mm to 3.0 mm, and / or It has a wall thickness of -0.1 mm to 2.0 mm, and / or - Having an outer diameter of less than 8.0 mm, and / or - Made of plastic, and / or - At least within a predetermined range, expandable and contractible in the radial direction. The furniture drive device (4) according to claim 9.

11. The spring element (38a) is -Having a width of 2.0 mm, and / or It has a wall thickness of -1.0 mm, and / or - Having an outer diameter of less than 7.5 mm, and / or - Consists of POM and / or TPU, and / or - Elastically expandable and contractible in the radial direction in at least a predetermined section, The furniture drive device (4) according to claim 9.

12. The furniture drive device (4) according to claim 9, wherein the spring element (38a) has an outer diameter of 7.0 mm or less.

13. The furniture drive device (4) according to claim 7, wherein the at least one retaining element (38) is supported in at least a predetermined portion so as to be slidable relative to the first component (37a) and / or the second component (37b) in the longitudinal direction (L3) of the first component (37a).

14. The furniture drive device (4) according to claim 13, wherein the limit torque is adjustable by the sliding of at least one retaining element (38).

15. The furniture drive device (4) according to claim 13, wherein at least one operating device (43) is provided that can slide the retaining element (38) relative to the first component (37a) and / or the second component (37b).

16. - The at least one operating device (43) is operable from a direction parallel to and / or lateral to the longitudinal direction (L3) of the first component (37a), and / or - The furniture drive device (4) has a casing (9), the overload protection device (33) is located inside the casing (9), and the retaining element (38) can be operated from outside the casing (9) via the operating device (43). The furniture drive device (4) according to claim 15.

17. The furniture drive device (4) according to claim 1, wherein the overload protection device (33) is formed such that the limit torque is 0.5 Nm to 4.0 Nm.

18. The furniture drive device (4) according to claim 1, wherein the overload protection device (33) is formed such that the limit torque is 0.8 Nm to 1.2 Nm.

19. The furniture drive device (4) according to claim 1, wherein the first component (37a) and the second component (37b) are positioned in a connected position relative to each other under torque below the limit torque, and are positioned in a separated position under torque above the limit torque, and in the separated position, the two components (37a, 37b) are separated from each other by a larger distance in the lateral direction (X) with respect to the longitudinal direction (L3) of the first component (37a) than in the connected position.

20. The furniture drive device (4) according to claim 1, wherein the adjustment element (19a) is integrally formed with the first component (37a) and / or the second component (37b), or the adjustment element (19a) and the two components (37a, 37b) are formed separately from each other.

21. The furniture drive device (4) according to claim 1, wherein the adjustment element (19a) has at least one operating contour (40).

22. The aforementioned operating contour (40) is - Having a hexalobular profile in at least one of the specified categories, and / or - Having a diameter of 3.86 mm or less, and / or - Displaced only in the first component (37a), and / or - Arranged in at least a predetermined area in the first component (37a), and arranged in at least a predetermined area in the second component (37b), and / or - Displaced on the end face of the adjustment element (19a), The furniture drive device (4) according to claim 21.

23. The furniture drive device (4) is - The movable furniture part (3) has an actuation arm assembly (5) which includes at least one movable actuation arm (5a, 5b, 5c, 5d, 5e), - The actuation arm assembly (5) has at least one spring device (10) for applying force to the actuation arm assembly (5), and the spring device (10) is connected to the actuation arm assembly (5) via at least one point of action (18), - By rotating the adjustment element (19a), the relative position of the at least one point of action (18) with respect to the operating arm assembly (5) can be adjusted. The furniture drive device (4) according to claim 1.

24. The furniture drive device (4) according to claim 23, wherein the furniture drive device (4) has at least one threaded section (17) having a longitudinal direction (L), and the operating portion (18) of the spring device (10) is adjustable along the threaded section (17) by the rotation of the adjustment element (19a) about the rotation axis (R).

25. The furniture drive device (4) according to claim 24, wherein the rotation axis (R) of the adjustment element (19a) and the longitudinal direction (L) of the threaded 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 threaded section (17) can be changed by at least one coupling device (25) that moves angularly when the operating arm assembly (5) moves.

26. A piece of furniture (1) comprising a furniture cabinet (2), a furniture part (3) movably supported relative to the furniture cabinet (2), and at least one furniture drive device (4) according to any one of claims 1 to 25 for moving the movable furniture part (3).

27. The furniture cabinet (2) has a furniture board (6) for attaching a casing (9), and the casing (9) of the furniture drive device (4) is housed inside a recess (11) of the furniture board (6) in at least a predetermined area, according to claim 26.

28. The furniture (1) according to claim 26, wherein the furniture cabinet (2) has a furniture board (6) for mounting a casing (9), and the casing (9) of the furniture drive device (4) is housed entirely inside a recess (11) of the furniture board (6) in at least a predetermined area.

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