Synchronization device for moving a movable piece of furniture

Description

[0001] The present invention relates to a synchronization device with at least two drive devices for moving a movable furniture part and with at least one synchronization rod for synchronizing the movement of the at least two drive devices, wherein a first end region of the synchronization rod can be connected to a first rotating part of the first drive device and a second end region of the synchronization rod can be connected to a second rotating part of the second drive device, wherein at least one length compensation device is provided by which, in a mounted state of the synchronization rod, play in a longitudinal direction of the synchronization rod between the drive devices and the synchronization rod can be at least partially compensated.

[0002] WO 2013 / 040611 A1 discloses a synchronization device with a synchronization rod for synchronizing two drive devices. The purpose of such a synchronization device is to ensure that the movable furniture part can always be guided at a constant distance from the furniture carcass, particularly when the movable furniture part is operated unilaterally by manual force. The synchronization rod can also be connected to the two drive devices even if the two drive devices are already pre-mounted on a furniture carcass. A necessary condition for optimal synchronization is that the play occurring in the longitudinal direction of the synchronization rod is compensated. For this purpose, at least one rotating part of the drive devices has a spring-loaded pressure element that can be applied to the end face of the synchronization rod, thereby compensating for the longitudinal play.One disadvantage of this design is that the drive device with the spring-loaded pressure part has a relatively bulky shape.

[0003] WO 2022 / 082237 A1, WO 2006 / 113953 A1, CN 104 116 334 A and DE 20 2021 101231 U1 each disclose a synchronization device according to the preamble of claim 1.

[0004] The object of the present invention is to provide a synchronization device of the type mentioned above with a compact design.

[0005] 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.

[0006] According to the invention, it is provided that at least one of the drive devices has a housing and that the length compensation device is integrated at least partially into the housing and / or that the length compensation device is integrated at least partially into the synchronization rod.

[0007] In other words, the length compensation device for compensating for longitudinal play in the synchronizing rod is integrated into the housing of the drive unit and / or into the synchronizing rod itself. This allows for a more compact design of the drive unit and / or the synchronizing rod.

[0008] In preferred embodiments, it can be provided that the synchronization rod is also detachably connectable to the rotating parts of the drive devices even if the drive devices, in particular on a furniture carcass, are already pre-assembled, and / or are connected to the rotating parts of the drive devices in a rotationally fixed manner in a connected state, and / or are pre-tensioned by the length compensation device between the two opposing rotating parts of the two drive devices with a predetermined holding force in the longitudinal direction of the synchronization rod relative to the two rotating parts of the drive devices and are held without play between the two rotating parts in the longitudinal direction of the synchronization rod, and / or are designed to be of fixed length.

[0009] In principle, the synchronization device can be used wherever the rotary motion of two drive devices needs to be synchronized, for example, for the synchronous triggering of so-called touch-latch devices for ejecting movable furniture parts from their closed end position. This touch-latch function allows the ejection of movable furniture parts by applying manual pressure or tension to the furniture part in the closed position.

[0010] The synchronization device can be used to synchronize the movement of movable furniture parts, in particular doors, flaps or drawers, or to synchronize the movement of other movable elements, for example windows.

[0011] 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 part in the form of a highly movable flap, as well as the synchronization device to be mounted on the furniture, in perspective views. Figs. 2a-2d show a synchronization device in a perspective view and various detailed views thereof. Figs. 3a-3d show a perspective view and a cross-sectional view of a rotating part with an integrated length compensation device in two different operating positions. Figs. 4a, 4b show a perspective view and a cross-sectional view of a synchronization rod coupled to the rotating part. Figs. 5a, 5b show a perspective view and a cross-sectional view of an embodiment of a synchronization rod with a partially integrated length compensation device. Figs. 6a-6e show the length compensation device according to the Fig. 5a-5b Figures 7a-7c show a further embodiment of a length compensation device, Figures 8a-8c show a further embodiment of a length compensation device, Figures 9a and 9b show a synchronization rod in a perspective view and a length compensation device in an exploded view, and Figures 10a-10c show the length compensation device according to Fig. 9b Figures 11a and 11b show a further embodiment of a length compensation device in different views, while Figures 12a and 12b show the embodiment of the length compensation device according to [reference missing]. Fig. 11a, 11b in two different cross-sectional views, Fig. 13 shows the length compensation device according to Fig. 12a, 12b in an exploded view.

[0012] Fig. 1a Figure 1 shows a piece of furniture 1 with a furniture body 2 and with a movable furniture part 3 in the form of a flap 3a, which is mounted to be movable relative to the furniture body 2 via two drive devices 100, 200.

[0013] In Fig. 1b The movable furniture part 3 is hidden, so that the drive devices 100, 200 mounted on opposite side walls are visible. The two drive devices 100, 200, together with a synchronizing rod 5, form a synchronizing device 6 for moving the movable furniture part 3.

[0014] In the illustrated embodiment, the two drive devices 100, 200 each have at least one pivoting arm 101, 201, preferably about a horizontal axis, which can be connected to the movable furniture part 3.

[0015] Each of the actuating arms 101, 201 is motionally coupled to a rotary part 102, 202, with the rotary part 102 of the left drive device 100 being derived from the in Fig. 1b This is not apparent from the illustration shown. The synchronizing rod 5, designed as a torsion shaft, is intended to synchronize the movement of the two drive devices 100, 200, so that a coupled, synchronous rotary movement of the two rotating parts 102, 202 of the two drive devices 100, 200 is achieved. Of course, it is also possible that the rotating part 102, 202 is formed by one of the actuating arms 101, 201.

[0016] Preferably, the synchronization rod 5 can be provided to run essentially in a horizontal direction in an assembled state.

[0017] Fig. 2a Figure 1 shows an embodiment of a synchronization device 6 in a perspective view. The drive devices 100, 200 each have a housing 103, 203 to be attached to the furniture body 2 and at least one rotating part 102, 202 for detachable connection to the synchronization rod 5. The housing 103, 203 can be formed by at least two housing walls that are at least partially spaced apart from each other. The synchronization rod 5, which has a longitudinal direction L, is rotationally fixed to the rotating parts 102, 202 of the drive devices 100, 200 in a connected state, so that when a rotating part 102, 202 moves, the synchronization rod 5 also moves.

[0018] According to one embodiment, it can be provided that at least one of the drive devices 100, 200 has at least one actuating arm 101 rotatable about at least one first axis of rotation ( Fig. 1b ) for moving the movable furniture part 3 relative to the housing 103, 203, wherein the rotating part 102, 202 of the drive device 100, 200 is arranged laterally offset to the first axis of rotation of the adjusting arm 101, 201.

[0019] Fig. 2b shows the in Fig. 2a The circled area "B" is shown in an enlarged view. In the illustrated embodiment, the turned part 102, 202 is integrated into the housing 103, 203, resulting in a very compact design for the drive devices 100, 200.

[0020] Fig. 2c Figure 1 shows an embodiment of a turned part 102, which is integrated at least partially, preferably substantially completely, into the housing 103 of the drive device 100. The turned parts 102 and 202 each have an interface 10 for the detachable attachment of the synchronization rod 5.

[0021] According to possible embodiments, it can be provided that at least one of the turned parts 102, 202 at least one toothing 7, preferably wherein the toothing 7 has at least two tooth segments 7a, 7b, 7c which are arranged layer by layer abutting each other in the longitudinal direction L of the synchronization rod 5, and / or is mounted on a shaft 8, wherein the length compensation device 9 is integrated into the shaft 8, and / or is integrated into the housing 103, 203 of the drive device 100, 200, and / or has at least two components 8a, 8b which are movable relative to each other in the longitudinal direction L of the synchronization rod 5, preferably wherein the components 8a, 8b are preloaded relative to each other by at least one energy storage device 13 (Fig. 2d) and / or are telescopic relative to each other.

[0022] According to possible embodiments, it can be provided that one of the at least two tooth segments 7a, 7b, 7c is made of a first material and the other of the tooth segments 7a, 7b, 7c is made of a second material which has a lower hardness than the first material, preferably wherein the first material is steel and / or the second material is plastic.

[0023] Fig. 2d shows the turned part 102 according to Fig. 2c in a sectional view. It can be seen that the turned part 102 has at least two components 8a, 8b that are displaceable relative to each other and which are pre-tensioned relative to each other by a force storage device 13, preferably in the form of a compression spring.

[0024] Component 8b is designed such that it can be positively connected to the synchronizing rod 5, enabling the transmission of torque between the turned part 102 and the synchronizing rod 5. For this purpose, the turned parts 102 and 202 can each have an interface 10 for the detachable coupling of the synchronizing rod 5.

[0025] According to a further embodiment, at least two tooth segments 7a, 7b, 7c can be arranged layer by layer abutting one another in the direction of the longitudinal axis L of the synchronizing rod 5, with one tooth segment 7b of the at least two tooth segments 7a, 7b, 7c projecting radially beyond the other tooth segment 7a, 7c. In this way, the play occurring between the rotating part 102, 202 and a transmission element (not shown) meshing with the rotating part 102, 202 can be reduced.

[0026] Fig. 3a Figure 1 shows a perspective view of a turned part 102 with a length compensation device 9 integrated into the turned part 102. The toothing 7 with the three layered tooth segments 7a, 7b, 7c is visible. The two outer tooth segments 7a, 7c can, for example, be made of metal and the middle tooth segment 7b of plastic, with the middle tooth segment 7b projecting radially beyond the two outer tooth segments 7a, 7c.

[0027] The turned part 102 has an interface 10 for a detachable connection with the synchronization rod 5. According to possible embodiments, the interface 10 can be provided The synchronizing rod 5 is designed such that it can only be connected to the rotating part 102 in a single rotational position within a rotational angular range of 360°, and / or it has a connecting element 10a with an outer contour that deviates from a circular shape for the positive locking of the synchronizing rod 5, preferably wherein the outer contour has several projections 11a, 11b, 11c, 11d arranged essentially equidistantly in the direction of rotation and at least one flattening 12 or recess which is arranged in place of a projection 11a, 11b, 11c, 11d. This design makes it possible for the synchronizing rod 5 to be connected to the rotating part 102 in a single rotational position within a rotational angular range of 360°.

[0028] Fig. 3b The turned part 102 shows according to Fig. 3a In a cross-sectional view, it can be seen that components 8a and 8b are pre-tensioned relative to each other by a force storage device 13, with component 8b being in an extended position relative to the other component 8a. In this position, any maximum play occurring in the synchronization rod 5 relative to the rotating part 102 can be compensated.

[0029] Fig. 3c Figure 1 shows the rotating part 102 with a component 8b, which is in a retracted position relative to the other component 8a. In this position, any minimal play in the synchronizing rod 5 relative to the rotating part 102 can be compensated.

[0030] Fig. 3d The turned part 102 shows according to Fig. 3c in a cross-sectional view.

[0031] Fig. 4a Figure 1 shows a perspective view of a synchronization rod 5 coupled to the turned part 102. It can be seen that the projections 11a, 11b of the component 8b, designed as a joining part 10a, engage positively in an end region of the synchronization rod 5.

[0032] The interface 10 can have an outer contour that deviates from a circular shape and a receiving part 21 for the positive-locking reception of the joining part 10a. In the illustrated embodiment, the receiving part 21 is formed by the synchronization rod 5.

[0033] Fig. 4b shows a cross-sectional view of the synchronization rod 5 and the rotating part 102 according to Fig. 4a The synchronization rod 5 can have at least one cavity 23 at at least one of its end regions, wherein the length compensation device 9 is arranged at least sectionally in the cavity 23.

[0034] According to one embodiment, the length compensation device 9 may have at least one first energy storage device 13 acting in the longitudinal direction L of the synchronization rod 5 and the energy storage device 13 may be arranged at least sectionally in the cavity 23 of the synchronization rod 5.

[0035] The synchronization rod 5 can have the same cross-section over its entire length and / or can be designed as a hollow profile with the same inner diameter over its entire length.

[0036] Fig. 5a Figure 1 shows a perspective view of an embodiment of a synchronization rod 5 with a partially integrated length compensation device 9 for compensating for any longitudinal play occurring in the longitudinal direction L of the synchronization rod 5.

[0037] According to one embodiment, the length compensation device 9 can be arranged at only one of the end regions on the synchronization rod 5.

[0038] The synchronization rod 5 has a fixed outer contour 13 at a first end region with a cross-section that deviates from a circular shape. The fixed outer contour 13 can be positively connected to one of the turned parts 102, 202 of the drive devices 100, 200.

[0039] The synchronization rod 5 has a length compensation device 9 at a second end region with an interface 10 for detachable connection to a rotating part 102, 202 of a drive device 100, 200. The interface 10 comprises several projections 11a, 11b, 11c, 11d arranged substantially equidistantly in the direction of rotation and at least one flattening 12 or recess, which is arranged in place of a projection 11a, 11b, 11c, 11d.

[0040] According to one embodiment, the length compensation device 9 can be frictionally connected or connectable to the synchronization rod 5.

[0041] Fig. 5b The length compensation device 9 shows according to Fig. 5a in a cross-sectional view.

[0042] The length compensation device 9 has at least one energy storage device 13 acting in the longitudinal direction L of the synchronization rod 5 and / or at least one spring element 16 acting transversely to the longitudinal direction L of the synchronization rod 5, wherein the spring element 16 can compensate for play transversely to the longitudinal direction L of the synchronization rod 5. The spring element 16 can, for example, be designed as a leaf spring.

[0043] The length compensation device 9 can have at least two connecting parts 8c, 8d, which are slidably mounted relative to each other in the longitudinal direction L of the synchronization rod 5, preferably with limited displacement. The connecting parts 8c, 8d are preloaded relative to each other by a force storage device 13, for example in the form of a compression spring.

[0044] In this embodiment, the length compensation device 9 has at least one pivot lever 14 which is pivotably mounted about a pivot axis 15 transverse to the longitudinal direction L of the synchronization rod 5 between a release position and a locking position.

[0045] The pivot lever 14 has a projection 17 which can be pressed against the spring element 16 and thus against the component 8c by actuating the pivot lever 14 about the pivot axis 15. In this way, the relative position of the two mutually displaceable connecting parts 8c, 8d of the length compensation device 9 can be locked. The spring element 16 is supported on the pivot lever 14, at least in the locking position of the pivot lever 14.

[0046] Fig. 6a-6e show the embodiment of the length compensation device 9 according to the Fig. 5a, 5b from different perspectives.

[0047] Fig. 6a Figure 1 shows the length compensation device 9 with the pivot lever 14 in a released position. The two connecting parts 8c, 8d are preloaded relative to each other by a force storage element 13, whereby any longitudinal play occurring in the synchronizing rod 5 relative to the rotating parts 102, 202 of the two drive devices 100, 200 can be compensated. In addition, at least one additional spring element 16 is provided, by which any play occurring transversely to the longitudinal direction L between the two connecting parts 8c, 8d can be compensated.

[0048] Fig. 6b The length compensation device 9 shows according to Fig. 6a In a cross-sectional view, the spring element 16, in the form of a leaf spring, can be seen, which compensates for play transverse to the longitudinal direction L. The pivot lever 14 is movably mounted about the pivot axis 15, and the pivot lever 14 has a stop 17 adjacent to the pivot axis 15 that can be applied to the spring element 16.

[0049] Fig. 6c Figure 1 shows the length compensation device 9 with the pivot lever 14 in a locking position in which the pivot lever 14 is flush with the substantially cylindrical connecting part 8c.

[0050] Fig. 6d The length compensation device 9 shows according to Fig. 6c in a cross-sectional view. By moving the pivot lever 14 about the pivot axis 15, the spring element 16 can be pressed through the projection 17 against the inner connecting part 8d, whereby the relative position between the connecting parts 8c, 8d can be locked.

[0051] Fig. 6e Figure 1 shows a cross-section of the length compensation device 9 with the pivot lever 14 in a released position. The position of the pivot lever 14 therefore corresponds to the Fig. 6a, 6b The spring element 16 in the form of a leaf spring can have a U-shaped cross-section.

[0052] According to possible embodiments, it can be provided that one of the connecting parts 8c, 8d has an outer contour with an inclined surface 18a, 18b, preferably two inclined surfaces 18a, 18b, and the other of the connecting parts 8c, 8d has an inner contour with a corresponding counter-form 19a, 19b, and / or one of the connecting parts 8c, 8d has an outer contour in the form of a hexagon, and / or the connecting parts 8c, 8d are slidably mounted in a direction transverse to the longitudinal direction L of the synchronization rod 5, preferably with limited displacement.

[0053] Fig. 7a-7c show a further embodiment of a length compensation device 9 with two connecting parts 8c, 8d that are movable relative to each other and which are pre-tensioned relative to each other by a force storage device 13 in a longitudinal direction of the synchronization rod 5.

[0054] Fig. 7a Figure 9 shows the length compensation device in a perspective view. At least one of the connecting parts 8c, 8d can have a section shaped as a hexagon.

[0055] Fig. 7b Figure 8d shows the length compensation device 9 in a further perspective view. The connecting part 8d has at least one spring element 22a, 22b, preferably two spring elements 22a, 22b, for attaching the length compensation device 9 to the synchronization rod 5. The at least one spring element 22a, 22b is located in a cavity 23 ( Fig. 4b ) the synchronization rod 5, wherein the length compensation device 9 is to be clamped in place by radially widening the spring piece 22a, 22b within the cavity 23 of the synchronization rod 5.

[0056] Fig. 7c The length compensation device 9 shows according to Fig. 7a, 7b in a cross-sectional view, wherein the connecting pieces 8c, 8d are pushed apart by the energy storage device 13 in a longitudinal direction L of the synchronization rod 5.

[0057] Fig. 8a-8c show a further embodiment of a length compensation device 9 with two connecting parts 8c, 8d that are movable relative to each other and which are pre-tensioned relative to each other by a force storage device 13 in a longitudinal direction of the synchronization rod 5.

[0058] Fig. 8a Figure 1 shows a perspective view of the length compensation device 9. The interface 10 for the releasable fastening of the synchronization rod 5 can have a flattening 12 or a recess, which is arranged in place of a projection 11a, 11b, 11c, 11d, 11e.

[0059] Fig. 8b The length compensation device 9 shows according to Fig. 8a in a cross-sectional view. It can be seen that at least two spring elements 16 are provided, spaced apart from each other in the longitudinal direction L of the synchronization rod 5, by which any play of the synchronization rod 5 occurring transversely to the longitudinal direction L can be compensated.

[0060] Fig. 8c Figure 1 shows an overlap area of ​​the two connecting parts 8c, 8d in a cross-section. One of the connecting parts 8c, 8d has an outer contour with an inclined surface 18a, 18b, preferably two inclined surfaces 18a, 18b. The other connecting part 8c, 8d has an inner contour with a corresponding counter-form 19a, 19b. By the force of the spring elements 16, one connecting part 8c is pressed into the other connecting part 8d via the inclined surfaces 18a, 18b and the corresponding counter-form 19a, 19b.

[0061] Fig. 9a Figure 5 shows a synchronization rod 5 in a perspective view. At least one cover element 20a, 20b can be provided, which is arranged to be displaceable in the longitudinal direction L of the synchronization rod 5 relative to the synchronization rod 5 and which is designed to cover one of the end regions of the synchronization rod 5. In the illustrated embodiment, the at least one cover element 20a, 20b is designed as a substantially cylindrical sleeve which is displaceably mounted along the synchronization rod 5.

[0062] Fig. 9b shows the in Fig. 9a The length compensation device 9 is shown in an exploded view. The two connecting parts 8c, 8d, which are slidable relative to each other, are pre-tensioned in a longitudinal direction L of the synchronizing rod 5 by a force storage device 13. In addition, at least one spring element 16 is provided, by which any play occurring transversely to the longitudinal direction L can be compensated. The spring element 16 has a bent end 16a for bearing against one of the connecting parts 8c, 8d.

[0063] Fig. 10a-10c They show the length compensation device 9 according to Fig. 9b from different perspectives.

[0064] Fig. 10a Figure 1 shows the length compensation device 9 in a perspective view. The length compensation device 9 comprises at least two connecting parts 8c, 8d that are telescopic relative to each other and which are pre-tensioned relative to each other in a longitudinal direction L of the synchronization rod 5 by at least one energy storage device 13.

[0065] Fig. 10b The length compensation device 9 shows according to Fig. 10a in a cross-sectional view. An additional spring element 16 compensates for play occurring transversely to the longitudinal direction L of the synchronization rod 5. The bent end 16a of the spring element 16 is supported against a circumferential surface of the connecting part 8d, whereby, in addition to compensating for play transversely to the longitudinal direction, an extension movement of the two connecting parts 8c, 8d relative to each other can also be limited.

[0066] Fig. 10c The length compensation device 9 shows according to Fig. 10a, 10b in a cross-section. The inner connecting part 8d has inclined surfaces 18a, 18b which are pressed against the corresponding counter-form 19a, 19b of the other connecting part 8c by a force of the spring element 16.

[0067] Fig. 11a und Fig. 11b show another embodiment of a length compensation device 9.

[0068] Fig. 11a The length compensation device 9 with the two connecting parts 8c, 8d is shown in an extended state.

[0069] Fig. 11b Figure 9 shows the length compensation device with the two connecting parts 8c, 8d in a compressed state in which the synchronization rod 5 can be detachably connected via the interface 10 to a rotating part 102, 202 of a drive device 100, 200.

[0070] Fig. 12a und Fig. 12b show the length compensation device 9 according to the preceding Figuren 11a, 11b .

[0071] Fig. 12a The length compensation device 9 with the two connecting parts 8c, 8d is shown in an extended state.

[0072] The length compensation device 9 comprises at least one force storage device 13 acting in the longitudinal direction L of the synchronization rod 5, by which the two connecting parts 8c, 8d are pre-tensioned in the longitudinal direction L.

[0073] In addition to the power storage device 13, the length compensation device 9 comprises at least one play compensation element 24 acting transversely to the longitudinal direction L of the synchronization rod 5, by which any play occurring transversely to the longitudinal direction L of the synchronization rod 5 can be compensated.

[0074] According to possible embodiments, it can be provided that the at least one play compensation element 24 is designed as a spring element 16, preferably wherein the spring element 16 is designed as a leaf spring or as a coil spring, and / or according to the invention, the backlash compensation element has at least one wedge element 24a with a wedge surface 25 extending obliquely to the longitudinal direction L of the synchronization rod 5, preferably wherein the at least one wedge element 24a is pre-tensioned by a spring element 16 in a direction parallel to the longitudinal direction L of the synchronization rod 5, and / or is slidably mounted in the longitudinal direction L of the synchronization rod 5.

[0075] According to one possible embodiment, the energy storage device 13 and the spring element 16 can each be designed as helical springs, with the longitudinal directions of the two helical springs running essentially parallel to each other. This allows for a particularly compact arrangement.

[0076] The additional play compensation element 24 thus serves to compensate for play occurring perpendicular to the longitudinal direction L, but does not hinder relative movement of the two connecting parts 8c, 8d to each other in the longitudinal direction L by the play compensation element 24.

[0077] Furthermore, the game compensation element 24 is designed to be self-adjusting, so that any play occurring perpendicular to the longitudinal direction L can be compensated automatically by the game compensation element 24.

[0078] Fig. 12b The length compensation device 9 shows according to Fig. 12a in a compressed state.

[0079] Fig. 13 The length compensation device 9 shows according to Fig. 12a, 12b in an exploded view.

[0080] By means of at least one stabilizing element 26, buckling of the energy storage device 13 in a direction perpendicular to the longitudinal direction L can be limited.

[0081] The play compensation element 24 with the wedge element 24 and the spring element 16 allows for the compensation of play occurring transversely to the longitudinal direction L between the two connecting parts 8c, 8d.

Claims

1. A synchronization device (6) comprising at least two drive devices (100, 200) for moving a movable furniture part (3) and at least one synchronization rod (5) for synchronizing a movement of the at least two drive devices (100, 200), a first end region of the synchronization rod (5) being configured to be connected to a first pivoting member (102) of the first drive device (100) and a second end region of the synchronization rod (5) being configured to be connected to a second pivoting member (202) of the second drive device (200, wherein at least one length compensating device (9) is provided configured to at least partially compensate for a play between the drive devices (100, 200) and the synchronization rod (5) in a direction extending in a longitudinal direction (L) of the synchronization rod (5) in a mounted condition of the synchronization rod (5), wherein at least one of the drive devices (100, 200) includes a housing (103, 203), and the length compensating device (9) is at least partially integrated into the housing (103, 203) and / or the length compensating device (9) is at least partially integrated into the synchronization rod (5), characterized in that the length compensating device (9) includes at least one play compensating element (24) operating in a direction extending transversely to the longitudinal direction (L) of the synchronization rod (5), wherein a play occurring in a direction extending transversely to the longitudinal direction (L) of the synchronization rod (5) can be compensated for by the at least one play compensating element (24), wherein the at least one play compensating element (24) includes at least one wedge element (24a) having a wedge surface (25) extending inclinedly to the longitudinal direction (L) of the synchronization rod (5).

2. The synchronization device (6) according to claim 1, characterized in that at least one of the pivoting members (102, 202) - includes at least one tooth arrangement (7), preferably wherein the tooth arrangement (7) includes at least two tooth segments (7a, 7b, 7c) bearing in layers against each other in a longitudinal direction (L) of the synchronization rod (5), and / or - is supported on a shaft (8), and the length compensating device (9) is integrated into the shaft (8), and / or - is integrated into the housing (103, 203) of the drive device (100, 200), and / or - includes at least two components (8a, 8b) configured to be moved relative to each other in the longitudinal direction (L) of the synchronization rod (5), preferably wherein the components (8a, 8b) are pre-stressed relative to each other by at least one force storage member (13) and / or are telescopically movable relative to each other.

3. The synchronization device (6) according to claim 1 or 2, characterized in that each of the pivoting members (102, 202) includes an interface (10) for releasably fixing the synchronization rod (5).

4. The synchronization device (6) according to claim 3, wherein the interface (10) - is configured such that the synchronization rod (5) is connectable to the pivoting member (102, 202) only in one single pivoting position within a pivoting angle range of 360°, and / or - includes an assembling portion (10a) having an outer contour deviating from a circular form, and a receiving portion (21) for receiving the assembling portion (10a) in a form-locking manner, preferably wherein the outer contour includes, over a region, a plurality of protrusions (11a, 11b, 11c, 11d) arranged substantially equidistantly in the pivoting direction, and further includes a flattening (12) or a recess which is arranged instead of a protrusion (11a, 11b, 11c, 11d).

5. The synchronization device (6) according to one of the claims 1 to 4, characterized in that the length compensating device (9) includes at least one force storage member (13) operating in the longitudinal direction (L) of the synchronization rod (5).

6. The synchronization device (6) according to one of the claims 1 to 5, characterized in that - the at least one play compensating element (24) is configured as a spring element (16), preferably wherein the spring element (16) is a leaf spring or a helical spring, and / or - the at least one wedge element (24a) is pre-stressed by a spring element (16) in a direction extending parallel to the longitudinal direction (L) of the synchronization rod (5), and / or is displaceably supported in the longitudinal direction (L) of the synchronization rod (5).

7. The synchronization device (6) according to one of the claims 1 to 6, characterized in that the length compensating device (9) includes at least one pivoting lever (14) pivotable about a pivoting axis (15) between a release position and an arresting position, the pivoting axis (15) extending transversely to the longitudinal direction (L) of the synchronization rod (5).

8. The synchronization device (6) according to claim 6 and 7, characterized in that the spring element (16) is supported on the pivoting lever (16) at least in the arresting position of the pivoting lever (14).

9. The synchronization device (6) according to one of the claims 1 to 8, characterized in that the length compensating device (9) includes at least two connecting members (8c, 8d) displaceably supported relative to each other, preferably in a limited manner, in the longitudinal direction (L) of the synchronization rod (5).

10. The synchronization device (6) according to claim 9, characterized in that - one of the connecting members (8c, 8d) includes an outer contour with an inclined surface (18a, 18b), preferably two inclined surfaces (18a, 18b), and the other of the connecting members (8c, 8d) includes an inner contour with a corresponding counterform (19a, 19b), and / or - one of the connecting members (8c, 8d) includes an outer contour in the form of a hexagon, and / or - the connecting members (8c, 8d) are displaceably supported, preferably in a limited manner, in a direction extending transversely to the longitudinal direction (L) of the synchronization rod (5).

11. The synchronization device (6) according to one of the claims 1 to 10, characterized in that the synchronization rod (5), on at least one of the end regions, includes at least one cavity (23) and the length compensating device (9) is at least partially arranged within the cavity (23), preferably wherein the length compensating device (9) includes at least one first force storage member (13) operating in the longitudinal direction (L) of the synchronization rod (5), and the force storage member (13) is at least partially arranged within the cavity (23) of the synchronization rod (5).

12. The synchronization device (6) according to one of the claims 1 to 11, characterized in that at least one cover element (20a, 20b) is provided, the at least one cover element (20a, 20b) being displaceably arranged relative to the synchronization rod (5) in the longitudinal direction (L) of the synchronization rod (5) and being configured to cover an end region of the synchronization rod (5).

13. The synchronization device (6) according to one of the claims 1 to 12, characterized in that the length compensating device (9) is arranged on the synchronization rod (5) on one end region only.

14. The synchronization device (6) according to one of the claims 1 to 13, characterized in that the length compensating device (9) is connected or is configured to be connected to the synchronization rod (5) in a friction-locked manner.

15. The synchronization device (6) according to one of the claims 1 to 14, characterized in that at least one of the drive devices (100, 200) includes at least one actuating arm (101) pivotable about a first pivoting axis for moving the movablysupported furniture part (3) relative to the housing (103, 203), wherein the pivoting member (102, 202) of the drive device (100, 200) is arranged laterally offset with respect to the first pivoting axis of the actuating arm (101, 201).

16. The synchronization device (6) according to one of the claims 1 to 15, characterized in that the synchronization rod (5) - is configured to be releasably connected to the pivoting members (102, 202) of the drive devices (100, 200), also when the drive devices (100, 200) have already been pre mounted, in particular to a furniture carcass (2), and / or - is connected to the pivoting members (102, 202) of the drive devices (100, 200) in a torque-proof manner in a mounted condition, and / or - is pre-stressed relative to the two pivoting members (102, 202) of the drive devices (100, 200) with a predetermined holding force by the length compensating device (9) between the two opposing pivoting members (102, 202) of the two drive devices (100, 200) in a longitudinal direction (L) of the synchronization rod (5), and is held between the two pivoting members (102, 202) in a longitudinal direction (L) of the synchronization rod (5) without play, and / or - is configured to be invariable in length, and / or - has an identical cross-section over an entire length, and / or - is configured as a hollow profile with an identical inner diameter over an entire length.