Furniture drive

Abstract

The invention relates to a furniture drive (4) for moving a furniture front part (3) relative to a furniture body (2), comprising a main part (9) to be secured to the furniture body (2) and an actuator arm (5) which is rotatably mounted on the main part (9) about at least one first rotational axis (7a) in the installed state. The actuator arm (5) has multiple levers (5a, 5b, 5c) which are connected together in an articulated manner; at least two of the levers (5a, 5b, 5c) of the actuator arm (5) are releasably connected to the main part (9) of the furniture drive (4); and at least the levers (5a, 5b, 5c) of the actuator arm (5) are symmetrical to an imaginary central plane (ME) of the actuator arm (5).

Description

[0001] The invention relates to a furniture drive for moving a furniture front relative to a furniture carcass, comprising a base body to be attached to the furniture carcass and an actuating arm which is rotatably mounted on the base body about at least a first axis of rotation, wherein the actuating arm has several levers articulated to one another, wherein at least two of the levers of the actuating arm are detachably connectable to the base body of the furniture drive, wherein the furniture drive has an interface for attaching a synchronization shaft, wherein a rotary movement of the at least one actuating arm can be synchronized with a rotary movement of at least one actuating arm of at least one further furniture drive by means of the synchronization shaft, wherein the interface has at least one component rotatable about an axis of rotation.

[0002] Furthermore, the invention relates to a piece of furniture comprising a furniture body, a furniture front and at least one furniture drive of the type to be described, wherein the base body of the at least one furniture drive is attached to the furniture body, preferably in and / or on a side wall of the furniture body, and the furniture front is attached to the actuating arm of the at least one furniture drive, preferably via a fastening interface.

[0003] Finally, the invention relates to a method for mounting an actuating arm on a base body of a furniture drive of the type to be described.

[0004] Such furniture drives comprise a base body to be attached to the furniture carcass and an actuating arm with at least two levers connected by joints, wherein the two levers of the actuating arm can be connected to two separate bearing points on the base body. The separate design of the base body and the actuating arm has the advantage that the size of the furniture drive is divided into two assemblies and that these assemblies can be connected to each other modularly. A problem with the prior art (for example, as in WO 2006 / 113953 A1) is that actuating arms with at least two levers for joint attachment to the base body can only be used on one side, i.e., only in combination with a first base body of the furniture drive that is attached to a first side of a furniture carcass.For a second base unit, which is to be attached to an opposite side panel of the furniture carcass, a mirror-image support arm must be used. This is more complex to manufacture because two separate production lines are required in the factory. Furthermore, it makes handling more complicated for an installer on site, as they must always distinguish between "left" and "right" support arms.

[0005] Patent application AT 516783 A1 of the applicant discloses a support device for a furniture flap. The support device has two support arms which overlap laterally without gaps in every position of the support device relative to the direction of movement. A first support arm can have a U-profile in which a second adjusting arm can be arranged. The adjusting arms are permanently connected to a housing of the support device, with the axes of rotation of the support arms being located inside the housing and thus inaccessible.

[0006] In EP 3 321 461 A1 and in US 2018 / 0298661 A1, furniture drives for moving a furniture flap are disclosed, wherein an actuating arm to be connected to the furniture flap is detachably connectable to a base body of the furniture drive.

[0007] The object of the present invention is to provide a furniture drive of the type mentioned at the outset, avoiding the disadvantages discussed above.

[0008] This is achieved according to the invention by the features of claim 1. Further advantageous embodiments of the present invention are defined in the dependent claims.

[0009] According to the invention, it is provided that at least the levers of the actuating arm are arranged symmetrically to an imaginary central plane of the actuating arm, that the axis of rotation of the rotatable component is arranged laterally offset to the first axis of rotation of the actuating arm, and that at least one coupling device is provided by which a rotary movement of the at least one actuating arm can be coupled with a rotary movement of the at least one component of the interface.

[0010] Due to the symmetrical design of the levers of the adjusting arm in relation to an imaginary central plane of the adjusting arm, the levers can also be connected to a base body of a second furniture drive, which is to be attached to an opposite side wall of the furniture body.

[0011] Thus, only a single type of actuator arm is required for both furniture drives to move the furniture front, which significantly simplifies the manufacture and handling of the actuator arm.

[0012] Further details and advantages of the present invention will become apparent from the following description of the figures. Figs. 1a, 1b show a piece of furniture with a movable furniture front and with two furniture drives for moving the furniture front, as well as the furniture with the furniture front removed. Figs. 2a, 2b show a furniture drive with an actuating arm according to the prior art in an unconnected and in a connected state with the base body. Figs. 3a, 3b show a perspective view and a cross-sectional view of a furniture drive according to a non-inventive embodiment with an actuating arm in an unconnected state with the base body. Figs. 4a, 4b show a non-inventive embodiment of a furniture drive with a base body and an actuating arm to be connected to the base body. Figs. 5a, 5b show the assembly of the actuating arm on the base body in two successive steps. Figs. 6a-6c show the assembly of the actuating arm on the base body in further steps.Figures 7a and 7b show an embodiment of a furniture drive according to the invention, comprising a base body and an actuating arm to be connected to the base body, in a perspective view and in a side view. Figures 8a and 8b show side views of the furniture drive according to the invention. Fig. 7a, 7b Figures 9a-9c show the mounting of the second lever of the adjusting arm on the base body of the inventive embodiment of the furniture drive, with a first lever of the adjusting arm in an unconnected and in a connected state with the base body. Figures 10a-10c show the adjusting arm in different views.

[0013] Fig. 1a Figure 1 shows a piece of furniture 1 with a furniture carcass 2 and a movable furniture front 3 in the form of a furniture flap 3a that can be lifted relative to the furniture carcass 2. The furniture front 3 can be a single piece or alternatively comprise several furniture parts that can be moved together.

[0014] A furniture drive 4 for moving the movable furniture part 3 is attached to each of the opposite side walls of the furniture carcass 2. Each furniture drive 4 has a rotatably mounted actuating arm 5, and the rotational movement of the two actuating arms 5 of the furniture drives 4 can be synchronized with each other by a synchronizing shaft 6.

[0015] Fig. 1b The furniture shows 1 according to Fig. 1a with the furniture front removed 3. The two furniture drives 4 can be identical in construction, so that the explanations given here are valid for both furniture drives 4.

[0016] The furniture drive 4 has a base body 9, preferably substantially cuboid in shape, which is to be attached to the furniture body 2. A lever 5a of the actuating arm 5 is pivotably mounted on this base body about an axis of rotation 7a. The synchronization shaft 6, on the other hand, is rotatably mounted about a further axis of rotation 7c. The axis of rotation 7a of the lever 5a and the axis of rotation 7c of the synchronization shaft 6 are laterally offset from each other, preferably parallel to each other.

[0017] The offset arrangement between the axis of rotation 7a of the lever 5a and the axis of rotation 7c of the synchronization shaft 6 has the particular advantage that the synchronization shaft 6 can be arranged, for example, at a high point in the furniture body 2, i.e. close to a top surface 2a of the furniture body 2.

[0018] Furthermore, it can be provided that the pivot axis 7c in a mounted state of the furniture drive 4 can be arranged deeper in a direction of the depth of the furniture body 2 than would be the case with a coaxial arrangement between the pivot axis 7a and the pivot axis 7c known according to the prior art.

[0019] The adjusting arm 5 has a fitting part 8 which can be detachably connected to a fitting body (not shown) to be attached to the furniture front 3. The fitting part 8 can be pivotally connected to the lever 5a of the adjusting arm 5 and can be designed such that the fitting part 8 can be connected to the fitting body to be attached to the furniture front 3 without tools.

[0020] Fig. 2a Figure 1 shows a furniture drive 4 with an actuating arm 5 according to the prior art in a disconnected state from the base body 9 of the furniture drive 4. The base body 9 of the furniture drive 4, which is to be attached to the furniture carcass 2, typically contains a power storage device 12 ( Fig. 4a The force is applied to the actuating arm 5, so that the weight of the furniture front 3, which can be attached to the actuating arm 5, can be compensated. The base body 9 of the furniture drive 4 has at least two separate bearing points 31a, 31b, which can be detachably connected to two separate connecting elements 32a, 32b of the actuating arm 5.

[0021] The actuating arm 5 has at least two or more levers 5a, 5b, 5c articulated to one another, wherein the first connecting element 32a is arranged on a first lever 5a and a second connecting element 32b is arranged on a second lever 5b. The third lever 5c, preferably angled at approximately 90°, is to be connected to the furniture front 3. A coupling piece 33 arranged on the first lever 5a is designed for connection with the synchronization shaft 6, wherein a rotational movement of the coupling piece 33 via the synchronization shaft 6 can be synchronized with a coupling piece 33 of the furniture drive 4 opposite it in the mounting position.

[0022] Fig. 2b Figure 5 shows the actuating arm 5 in a connected state with the base body 9 of the furniture drive 4, according to the prior art. It is shown based on the Fig. 2b It is immediately apparent that, according to the prior art, the adjusting arm 5, due to its asymmetrical design, can only be used on one side, in this case only with a furniture drive 4 to be attached to a right-hand side wall of the furniture carcass 2. For a furniture drive 4 to be attached to a left-hand side wall of the furniture carcass 2, a mirror-image adjusting arm 5 must be used.

[0023] Fig. 3a Figure 1 shows a furniture drive 4 not according to the invention, with an actuating arm 5 in a disconnected state from the base body 9. The base body 9 of the furniture drive 4 has two housing walls 9a, 9b spaced apart from each other, each of which has a flat contact surface for contact with a furniture carcass 2. In this way, the base body 9 of the furniture drive 4 can be mounted either on a first side wall of the furniture carcass 2 or, alternatively, on a second side wall of the furniture carcass 2 opposite the first side wall. An opening 9c is formed between the two housing walls 9a, 9b, through which the actuating arm 5 projects, at least partially, in a fully open position.

[0024] The adjusting arm 5 is rotatably mounted on the base body 9 about at least one first axis of rotation 7a in its assembled state. The adjusting arm 5 comprises several levers 5a, 5b, 5c connected to one another by pivots, wherein at least two of the levers 5a, 5b of the adjusting arm 5 are detachably connectable to the base body 9 of the furniture drive 4.

[0025] The actuating arm 5 is movable between a closed position and a maximum open position, wherein the actuating arm 5 is arranged at least partially within the base body 9 of the furniture drive 4 in the closed position.

[0026] The levers 5a, 5b, 5c of the actuating arm 5 can form a four-pivot geometry, wherein one of the four pivot points of the four-pivot geometry corresponds to the at least one first axis of rotation 7a of the actuating arm 5.

[0027] In the illustrated embodiment, the adjusting arm 5 is rotatably mounted on the base body 9 about at least a second axis of rotation 7b, wherein the base body 9 of the furniture drive 4 has an end opening 9c through which the adjusting arm 5 projects at least partially in a maximum opening position, wherein the second axis of rotation 7b has a smaller normal distance to the end opening 9c than the first axis of rotation 7a, and / or the base body 9 of the furniture drive 4 has a top surface 34 which, in a fixed state of the furniture drive 4 on the furniture body 2, forms a top surface 2a ( Fig. 1a, 1b ) of the furniture body 2, wherein the second axis of rotation 7b has a smaller normal distance to the top 34 than the first axis of rotation 7a.

[0028] According to one embodiment, the second axis of rotation 7b can be provided to correspond to a pivot point of the four-pivot geometry of the levers 5a, 5b, 5c of the adjusting arm 5.

[0029] Furthermore, it may be provided that at least two of the provided levers 5a, 5b of the actuating arm 5 are arranged nested relative to each other in at least one rotational position, preferably in every rotational position, of the actuating arm 5, such that the two levers 5a, 5b are essentially gapless relative to each other in a top view from the side, and / or at least one lever 5a, 5c is U-shaped in cross-section and a further lever 5b can be arranged or is arranged at least sectionally between the vertical webs of the U-shape.

[0030] The third lever 5c has a fastening interface 35, via which the furniture front 3 can be attached to the adjusting arm 5, preferably detachably, wherein the first lever 5a and the second lever 5b are pivotally connected to the third lever 5c. The third lever 5c is angled, with two sections 36a, 36b of the angled third lever 5c forming an angle of substantially 90° relative to each other. Fig. 3b Figure 1 shows the furniture drive 4 with the base body 9 and the adjusting arm 5 to be connected to the base body 9 in a cross-sectional view. Visible are the housing walls 9a, 9b of the base body 9, the end opening 9c formed between the housing walls 9a, 9b, and the top surface 34 of the base body 9.

[0031] Furthermore, it can be seen that the levers 5a, 5b, 5c of the adjusting arm 5 are arranged symmetrically with respect to an imaginary central plane (ME) of the adjusting arm 5. In this way, the adjusting arm 5 can be detachably connected both to a base body 9 to be attached to a first side wall of the furniture carcass 2 and to a second base body 9 to be attached to a second side wall of the furniture carcass 2 opposite the first side wall.

[0032] Preferably, one of the levers 5b of the actuating arm 5 is arranged in the central plane (ME) of the actuating arm 5.

[0033] Fig. 4a shows a non-inventive embodiment of a furniture drive 4 with a base body 9 and an adjusting arm 5 to be connected to the base body 9.

[0034] The furniture drive 4 has at least one energy storage device 12, preferably mounted on the base body 9, and preferably with at least one spring element 12a, through which the adjusting arm 5 can be subjected to a force. In this way, the weight of the furniture front 3, which can be attached to the adjusting arm 5, can be compensated for.

[0035] The power storage unit 12 is in Fig. 4a The diagram is shown only schematically and may include, for example, a gas spring in addition to mechanical spring elements. Alternatively or additionally to the energy storage device 12, an electric drive may also be provided to actuate the positioning arm 5.

[0036] According to one embodiment, a transmission mechanism 17 may be provided with which a force that can be stored in at least one energy storage device 12 can be transmitted to the actuating arm 5, preferably wherein the transmission mechanism 17 comprising at least one intermediate lever 13 pivotable about a pivot axis 13a, preferably wherein the at least one energy storage device 12 is connected to the at least one intermediate lever 13 via a preferably adjustable point of contact 14, and / or comprising at least one pressure piece 15, preferably a rotatable pressure roller, and at least one actuating contour 16 on which the at least one pressure piece 15 can be slidably supported during movement of the actuating arm 5, preferably wherein the at least one pressure piece 15 is arranged or can be arranged on at least one intermediate lever 13 of the transmission mechanism 17 and the at least one actuating contour 16 is arranged or can be arranged on the actuating arm 5, or vice versa.

[0037] The actuating arm 5 has two or more levers 5a, 5b, 5c connected to each other by a hinge, wherein in the illustrated embodiment the first lever 5a and / or the third lever 5c have a U-shaped section in a cross-section in which the second lever 5b is arranged or can be arranged.

[0038] In the illustrated embodiment, the adjusting arm 5 can be detachably connected to the base body 9 of the furniture drive 4 via connecting devices 37, 38. It can be provided, for example, that at least one connecting device 37, 38 includes at least one fastening part 37a, 38a that can be hooked or slid onto the base body 9 and / or at least one spring 25 ( Fig. 5a ) has a spring-loaded locking element 37b. The first, preferably hook-shaped, fastening part 37a of the lever 5b can be hooked onto the base body 9, for example onto a bolt arranged on the second axis of rotation 7b, wherein the lever 5b can be releasably locked by the spring-loaded locking element 37b.

[0039] The second fastening part 38a of the other connecting device 38, on the other hand, is detachably connected, and in particular lockable, to a movable actuating part 22, preferably rotatable about the first axis of rotation 7a. Preferably, the actuating contour 16 is formed on the movable actuating part 22.

[0040] Fig. 4b shows the in Fig. 4a The circled area is shown in an enlarged view. The connecting device 38 can have a recess 27a arranged on the actuating element 22, in which the lever 5a, preferably a locking element 38b projecting laterally from the lever 5a ( Fig. 4a ), is recordable.

[0041] The lever 5a can be releasably locked to a locking element 38c of the connecting device 38. Preferably, the locking element 38c is designed as a bolt and / or is biased by a spring 25 towards a locking position and / or is movable along a guide track 30.

[0042] To release the locking mechanism between the locking element 38c and the lever 5a, a movable release element 24, preferably rotatable about the axis of rotation 7a, is provided. This release element allows the locking element 38c to move against the force of the spring 25, thus releasing the lever 5a. In the figure shown, the locking element 38c is in a locked position. For locking with the lever 5a, the locking element 38c must be at the other end of the guide track 30.

[0043] Fig. 5a Figure 1 shows the assembly of the adjusting arm 5 on the base body 9 in a first step, wherein the fastening part 37a of the connecting device 37 of the lever 5b is hooked onto the bolt arranged on the second axis of rotation 7b.

[0044] The locking element 37b can be seen, which is mounted, for example, along at least one guide so as to be linearly displaceable and is pre-tensioned in the direction of the locking position by a spring 25. The spring 25 can be formed, for example, by a mechanical spring element or by the material elasticity of a component. It can be seen that the locking element 37b has an inclined surface, through which the locking element 37b can be forced against the force of the spring 25 when interacting with the pivot axis 7b.

[0045] Fig. 5b Figure 1 shows the locking element 37b locked to the pivot axis 7b. The locking element 37b was designed starting from Fig. 5a The lever 5b is moved by its inclined surface against the force of the spring 25 and subsequently brought into a locking position with the pivot axis 7b by the force of the relaxing spring 25. The lever 5b is now pivotally connected to the pivot axis 7b.

[0046] Fig. 6a-6c The assembly of the adjusting arm 5 on the base body 9 is shown in further steps. Starting from Fig. 5b The levers 5a and 5b were pivoted about the axis of rotation 7b relative to the base body 9. The fastening part 38a of the second connecting device 38 can be supported on a guide element 39 arranged on the actuating part 22, so that the laterally projecting locking element 38b of the lever 5a can be inserted into the recess 27a of the actuating part 22.

[0047] In Fig. 6b It can be seen that the locking element 38c is moved along the guide track 30 by the fastening part 38a of the lever 5a against the force of a spring 25 (not shown here).

[0048] In Fig. 6c It can be seen that the locking element 38c can enter a detent recess of the fastening part 38a through the contour formed by the fastening part 38a and through the force of a charged spring 25, whereby the lever 5a can be releasably locked to the base body 9.

[0049] The locking mechanism between the lever 5a and the base body 9 is released by actuating the release element 24, which pivots about the axis of rotation 7a. Actuating the release element 24 allows the locking element 38c to be moved against the force of its acting spring 25, thereby unlocking the lever 5a from the locking element 38c.

[0050] Fig. 7a und Fig. 7b Figure 1 shows an embodiment of a furniture drive 4 according to the invention, comprising a base body 9 and an adjusting arm 5 to be connected to the base body 9, in a perspective view and a side view. The basic structure of the furniture drive 4 corresponds to the previous embodiment.

[0051] The one in the Fig. 7a, 7b The furniture drive 4 shown includes an interface 21 for attaching the synchronization shaft 6 ( Fig. 1b ), wherein the synchronization shaft 6 makes it possible to synchronize a rotary movement of the actuating arm 5 with a rotary movement of an actuating arm 5 of at least one further furniture drive 4.

[0052] The interface 21 comprises at least one component 11 rotatable about the axis of rotation 7c, wherein the axis of rotation 7c is arranged laterally offset to the first axis of rotation 7a of the actuating arm 5.

[0053] This results in several design advantages. For example, the rotatable component 11 can be positioned as high as possible in the furniture body 2 when the furniture drive 4 is mounted on the furniture body 2, whereby the synchronization shaft 6 coupled to the rotatable component 11 hardly hinders the storage and removal of items in and out of the furniture body 2.

[0054] Constructively, this can be achieved by the base body 9 having at least one end opening 9c through which the at least one actuating arm 5 protrudes at least partially in a relative position corresponding to an open position of the furniture front 3, wherein the first axis of rotation 7a has a smaller normal distance to the end opening 9c than the axis of rotation 7c of the component 11, which can be coupled to the synchronization shaft 6.

[0055] Furthermore, it can be provided that the rotatable component 11, in a mounted state of the furniture drive 4, is arranged on the furniture body 2 at the lowest possible point in a direction of the depth of the furniture body 2, whereby the synchronization shaft 6 coupled to the rotatable component 11 is hardly visible from an optical point of view - even due to a shadow formation caused by the furniture body 2.

[0056] Constructively, this can be achieved by the fact that the base body 9 has at least one top surface 34 which, in a mounted state of the furniture drive 4 on the furniture body 2, forms a top surface 2a ( Fig. 1a, 1b ) of the furniture body 2, wherein the first axis of rotation 7a of the lever 5a has a greater normal distance to at least one top surface 34 than the axis of rotation 7c of the rotatable component 11.

[0057] The component 11, which is rotatable about the axis of rotation 7c, has a receiving device 11a for receiving the synchronization shaft 6. Preferably, the receiving device 11a has a non-circular cross-section for receiving the synchronization shaft 6. It is particularly preferred that the synchronization shaft 6 can only be connected to the receiving device 11a in a single rotational position within a rotational angular range of 360°.

[0058] The furniture drive 4 has at least one coupling device 18 by which a rotary movement of the at least one actuating arm 5 can be coupled with a rotary movement of the at least one component 11 of the interface 21.

[0059] According to one embodiment, it can be provided that the at least one coupling device 18 has a non-circular gear.

[0060] The coupling device 18 can have at least one toothing 19, 20, preferably wherein the at least one toothing 19, 20 has at least one tooth segment 19a, 20a ( Fig. 8a, 8b ).

[0061] According to one embodiment, the coupling device 18 may have at least one toothing 19, 20, wherein one toothing 19 is connected or connectable to the adjusting arm 5 and the other toothing 20 is connected or connectable to the interface 21.

[0062] The actuating arm 5 has several levers 5a, 5b, 5c connected to each other by means of joints, which are arranged symmetrically to an imaginary central plane (ME) of the actuating arm 5, wherein at least two of the levers 5a, 5b are detachably connectable to the base body 9.

[0063] The first lever 5a has a first connecting device 37 with a fastening part 37a, whereas the second adjusting arm 5b comprises a second connecting device 38 with a fastening part 38a and a locking element 38b, which is movable along a guide track 30 against a force of a spring 25 (not shown here).

[0064] Fig. 8a Figure 1 shows the first lever 5a of the adjusting arm 5, which is to be connected to the base body 9. The toothing 19, preferably a tooth segment 19a, has at least one, preferably funnel-shaped, recess 27a for partially receiving the lever 5a. It can be seen that a contour of the recess 27a is adapted, at least partially, to a contour of the lever 5a, wherein the lever 5a engages in the recess 27a in a form-fitting manner when connected.

[0065] The lever 5a is engaged via a first notch 28a on a first locking element arranged on the first axis of rotation 7a. When the lever 5a is inserted into the recess 27a, a second locking element 29 is moved along a guide track 30 by its interaction with the lever 5a against a force from the spring 25.

[0066] A fastening element 37a, for example a projection extending laterally from the lever 5a, is arranged on the lever 5a, wherein the fastening element 37a engages in a further recess 27b when the lever 5a is connected. The locking of the lever 5a is effected by the locking element 29, which can be engaged in the second notch 28b of the lever 5a by a force of the spring 25 ( Fig. 8b ).

[0067] The three-point locking mechanism (notch 28a on the pivot axis 7a, fastening part 37a in recess 27b, locking element 29 in notch 28b) provides a particularly tilt-proof connection of the lever 5a in relation to the base body 9.

[0068] The recess 27a of the toothing 19 can form an insertion funnel for inserting the lever 5a of the adjusting arm 5, whereby the lever 5a can be centered in the direction of the axis of rotation 7a during assembly.

[0069] To release the locking mechanism between the lever 5a and the base body 9, the unlocking element 24 is moved (for example by a tool) against a force of the spring 25 until the second locking element 29 can be unlocked from the second notch 28b of the lever 5a.

[0070] Fig. 8b shows the connected state of the lever 5a with the base body 9 of the furniture drive 4.

[0071] Fig. 9a-9c Figure 1 shows the assembly of the second lever 5b of the adjusting arm 5 with the base body 9 of the furniture drive 4. The first lever 5a is already articulated with the base body 9.

[0072] The second lever 5b is pivoted towards the base body 9, whereby the fastening part 38a of the lever 5b is inserted into the recess 27a of the actuating part 22, which is pivotable about the second axis of rotation 7b. The spring-loaded locking element 38b of the lever 5b rests against a guide contour of the actuating part 22 ( Fig. 9a ).

[0073] By manually pressing the fastening part 38a into the recess 27a of the adjusting part 22, the locking element 38b is moved along the guide track 30 against the force of a spring 25, thereby charging the spring 25 ( Fig. 9b ).

[0074] If the fastening part 38a is pressed further into the recess 27a, the locking element 38b springs into the detent recess of the adjusting part 22 due to the force of the discharging spring 25, thereby allowing the second lever 5b to be releasably locked to the adjusting part 22. The locked position of the lever 5b is therefore in Fig. 9c shown.

[0075] To release the locking mechanism, the locking element 38b is moved, for example by means of a tool, against the force of its acting spring 25, thereby releasing the lever 5b of the adjusting arm 5.

[0076] Fig. 10a-10c Figures show the adjusting arm 5 with the articulated levers 5a, 5b, 5c in different views.

[0077] Fig. 10a Figure 1 shows a perspective view of the adjusting arm 5, in which the two connecting devices 37, 38 for connecting the adjusting arm 5 to the base body 9 of the furniture drive 4 are visible.

[0078] Fig. 10b shows a cross-section of the in Fig. 10a The actuating arm 5 shown, wherein the locking element 38b actuated by a spring 25 is shown.

[0079] Fig. 10c Figure 5 shows the actuating arm 5 in a cross-section, clearly showing the symmetrical structure of the levers 5a, 5b, 5c in relation to an imaginary central plane (ME).

[0080] The inventive method for mounting an actuating arm 5 on a base body 9 of a furniture drive 4 is characterized by the following steps: In a first step, a first lever 5a of the actuating arm 5 is detachably connected to the base body 9, in a second step, a second lever 5b of the actuating arm 5 is pivoted relative to the first lever 5a, and in a third step, a second lever 5b of the actuating arm 5 is detachably connected to the base body 9 of the furniture drive (4).

Claims

1. A furniture drive (4) for moving a furniture front (3) relative a furniture carcass (2), the furniture drive (4) comprising a base body (9) configured to be fixed to the furniture carcass (2) and an actuating arm (5) pivotally supported on the base body (9) about at least one first pivoting axis (7a) in a mounted condition, wherein the actuating arm (5) includes a plurality of levers (5a, 5b, 5c) hingedly connected to one another, wherein at least two of the levers (5a, 5b, 5c) of the actuating arm (5) are configured to be releasably connected to the base body (9) of the furniture drive (4), wherein the furniture drive (4) includes an interface (21) for fixing a synchronization shaft (6), wherein by the synchronization shaft (6), a pivoting movement of the at least one actuating arm (5) can be synchronized with a pivoting movement of at least one actuating arm (5) of at least one further actuating drive (4), wherein the interface (21) includes at least one component (11) pivotable about a pivoting axis (7c), characterized in that at least the levers (5a, 5b, 5c) of the actuating arm (5) are symmetrically arranged with respect to a notional middle plane (ME) of the actuating arm (5), the pivoting axis (7c) of the pivotable component (1) is arranged laterally offset with respect to the first pivoting axis (7a) of the actuating arm (5), and that at least one coupling device (18) is provided for coupling a pivoting movement of the at least one actuating arm (5) to a pivoting movement of the at least one component (11) of the interface (21).

2. The furniture drive (4) according to claim 1, characterized in that one of the levers (5a, 5b, 5c) of the actuating arm (5) is arranged in the notional middle plane (ME) of the actuating arm (5).

3. The furniture drive (4) according to claim 1 or 2, characterized in that the actuating arm (5) is movable between a closed position and a maximum open position, wherein the actuating arm (5), in the closed position, is at least partially arranged within the base body (9) of the furniture drive (4).

4. The furniture drive (4) according to one of the claims 1 to 3, characterized in that - at least two of the levers (5a, 5b, 5c) of the actuating arm (5), in at least one pivoting position, preferably in each pivoting position, of the actuating arm (5) are nested into each other, so that the two levers (5a, 5b, 5c) are arranged in a gap-free manner relative to one another in a view from the side, and / or - at least one lever (5a, 5b, 5c) is U-shaped in a cross-section, and a further lever (5a, 5b, 5c) is at least partially arranged or can be arranged between the vertical limbs of the U-shape.

5. The furniture drive (4) according to one of the claims 1 to 4, characterized in that the levers (5a, 5b, 5c) of the actuating arm (5) form a four-pivot-point geometry, wherein one of the four pivot points of the four-pivot-point geometry corresponds to the at least one pivoting axis (7a) of the actuating arm (5).

6. The furniture drive (4) according to one of the claims 1 to 5, characterized in that the actuating arm (5) is pivotally supported about at least one second pivoting axis (7b) on the base body (9), wherein - the base body (9) of the furniture drive (4) has a front opening (9c), and the actuating arm (5) projects at least partially through the front opening (9c) in a maximum open position, wherein the second pivoting axis (7b) has a smaller perpendicular distance to the front opening (9c) than the first pivoting axis (7a).

7. The furniture drive (4) according to claim 6, characterized in that the second pivoting axis (7b) corresponds to a pivot point of the four-pivot-point geometry of the levers (5a, 5b, 5c) of the actuating arm (5).

8. The furniture drive (4) according to one of the claims 1 to 7, characterized in that the actuating arm (5) - includes at least three levers (5a, 5b, 5c) hingedly connected to one another, and / or - includes at least one angled lever (5c), preferably wherein two partial portions (36a, 36b) of the angled lever (5c) adopt an angle of substantially 90° relative to one another.

9. The furniture drive (4) according to one of the claims 1 to 8, characterized in that the actuating arm (5) includes at least a first lever (5a) and a second lever (5b) by which the actuating arm (5) is pivotally connected to the base body (9), and further includes a third lever (5c) on which a fastening interface (35) is arranged, wherein the actuating arm (5) is configured to be, preferably releasably, fixed to furniture front (3) via the fastening interface (35), and wherein the first lever (5a) and the second lever (5b) are hingedly connected to the third lever (5c).

10. The furniture drive (4) according to one of the claims 1 to 9, characterized in that the furniture drive (4) includes at least one force storage member (12) for applying a force to the actuating arm (5) so as to compensate for a weight of the furniture front (3) to be fixed to the actuating arm (5), preferably wherein the at least one force storage member (12) is arranged on the base body (9) and preferably includes at least one spring element (12a).

11. The furniture drive (4) according to claim 10, characterized in that a transmission mechanism (17) is provided for transmitting a force, that can be stored in the at least one force storage member (12), to the actuating arm (5), preferably wherein the transmission mechanism (17) - includes at least one intermediate lever (13), preferably wherein the at least one force storage member (12) is connected to the at least one intermediate lever (13) via an, preferably adjustable, engagement location (14), and / or - includes at least one pressure portion (15), preferably a rotatable pressure roller, and at least one setting contour (16) on which the at least one pressure portion (15) can be displaceably supported upon a movement of the actuating arm (5), preferably wherein the at least one pressure portion (15) is arranged on the at least one intermediate lever (13) of the transmission mechanism (17), and the at least one setting contour (16) is arranged or can be arranged on the actuating arm (5), or vice versa.

12. The furniture drive (4) according to one of the claim 1 to 11, characterized in that - the at least one coupling device (18) includes an eccentric transmission, and / or - the at least one coupling device (18) includes at least one tooth arrangement (19, 20), preferably wherein the at least one tooth arrangement (19, 20) includes at least one tooth segment (19a, 20a), and / or - the at least one coupling device (18) includes at least one tooth arrangement (19, 20) having a tooth segment (19a, 20a), wherein the tooth segment (19a, 20a) includes a connection device (37, 38) configured to be connected to a lever (5a, 5b) of the actuating arm (5), preferably wherein the connection device (37, 38) includes at least one recess (27a, 27b) for partially receiving a lever (5a, 5b) of the actuating arm (5).

13. The furniture drive (4) according to one of the claims 1 to 12, characterized in that at least one connection device (37, 38) is provided, the at least one connection device (37, 38) being configured to releasably connect the actuating arm (5) to the base body (9) of the furniture drive (4), preferably wherein the connection device (37, 38) - includes at least one connection portion (37a, 37b) configured to be hung onto or configured to be slid into the base body (9), and / or - includes at least one locking element (29, 38a), preferably a pin, pressurized by a spring (25), and / or - includes at least one locking element (29, 38a), preferably a pin, configured to be movably guided along a guide track (30), and / or - includes at least one recess (27a, 27b) for partially receiving a lever (5a, 5b) of the actuating arm (5).

14. The furniture drive (4) according to one of the claims 1 to 13, characterized in that at least one movable actuating portion (22) is provided, preferably wherein the at least one actuating portion (22) is pivotable about a pivoting axis (7a), and a lever (5b) of the actuating arm (5) is configured to be releasably connected to the at least one actuating portion (22).

15. An item of furniture (1) comprising a furniture carcass (2), a furniture front (3) and at least one furniture drive (4) according to one of the claims 1 to 14, wherein the base body (9) of the at least one furniture drive (4) is fixed to the furniture carcass (2), preferably to and / or within a sidewall of the furniture carcass (2), and the furniture front (3) is fixed to the actuating arm (5) of the at least one furniture drive (4), preferably via a fastening interface (35).

16. A method for mounting an actuating arm (5) to a base body (9) of a furniture drive (4) according to one of the claims 1 to 14, characterized by the following steps: - in a first step, a first lever (5a, 5b, 5c) of the actuating arm (5) is releasably connected to the base body (9), - in a second step, a second lever (5a, 5b, 5c) of the actuating arm (5) is pivoted relative to the first lever (5a, 5b, 5c), and - in a third step, a second lever (5a, 5b, 5c) of the actuating arm (5) is releasably connected to the base body (9) of the furniture drive (4).

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