Furniture

Abstract

Furniture (1) with a pivot drive (30) for a movable furniture part, wherein the pivot drive (30) is arranged in a side wall (10) of the furniture (1), and the side wall (10) has a plate-shaped core (11) which has a first end face and further end faces, and wherein a recess (12) is arranged in the core (11), which extends at least along a section of the first end face of the side wall (10) and serves to receive a flap fitting (4) which guides a movable furniture part, and the pivot drive (30) comprises the following: - an actuating arm (32) pivotably mounted about a rotation axis (31); - a spring assembly (33) with at least one spring guided linearly in one direction of action, - a pressure piece (34, 34') connected to the spring assembly (33) and movable along a control cam (35, 35'), - a housing (21) on or in which the pivot drive is mounted, wherein the actuating arm (32) is connected to the spring assembly (33) in a rotationally fixed manner and can be pivoted therewith about the axis of rotation (31), wherein the actuating arm (32) is connected to the movable furniture part via a multi-joint connection and the control cam (35, 35') is adjustable relative to the axis of rotation (31) for adjusting the spring force of the spring assembly (33) and / or the force effect of the spring assembly (33) on the control cam is adjustable.

Description

[0001] The present invention relates to a piece of furniture with a pivot drive for a movable furniture part with an actuating arm pivotably mounted about a rotation axis, a spring assembly with at least one spring guided linearly in an effective direction and a pressure piece connected to the spring assembly, which can be moved along a control curve, and a housing on or in which the pivot drive is mounted and a piece of furniture.

[0002] DE 20 2010 015 091 U1 discloses a furniture fitting for driving a flap, in which a power drive with springs acts on a force deflection lever to preload a joint drive in the opening or closing direction. To adjust the force, a coupling element on the deflection lever can be adjusted. The disadvantage is that different spring forces and a different spring force curve are required for flaps of different widths and weights, depending on the opening position of the flap. The adjustment options for this furniture fitting are inadequate.

[0003] WO 2016 / 077851 A1 discloses an actuator for moving a furniture part, in which a spring device acts on a rotatable actuating arm via a transmission mechanism. A pressure piece loaded by a spring device is movable along an actuating contour, which is adjustable relative to the actuating part to adjust the spring force. While such an actuator enables a compact design, the adjustment options are limited because the actuating contour is arranged between the pressure piece and the actuating arm. This leads to unfavorable leverage ratios and problems when a necessary change in the actuating contour is required.

[0004] WO 2004 / 104339 A1 discloses a lid adjuster for furniture with two pivotally mounted arms, wherein a spring element in one of the arms preloads a pressure piece against a curved guide, so that the arms are subjected to a force during a relative movement. The spring force can be adjusted via a rotatable eccentric. EP 2 251 514 A1 discloses a similar lid adjuster for a lid movably mounted on a container.

[0005] EP 1 148 200 A2 discloses a flap holder for a flap that can be opened by pivoting upwards, comprising an arm part on the flap side and an arm part on the body side, which are pivotally connected to one another at one end to the flap and at the other end to a fitting part that can be fastened to the furniture body, so that a toggle lever-like arrangement is formed.

[0006] WO 2016 / 131770 A1 discloses a lifting system with a flap fitting via which a panel can be pivoted about at least one horizontal axis between a closed position and a raised open position.

[0007] DE 20 2005 021 541 U1 discloses an actuating mechanism for a pivotably mounted actuating arm for driving a flap of a piece of furniture, comprising a spring device with a spring-loaded actuating element and a transmission mechanism that converts the movement of the actuating element into a pivoting movement of the actuating arm. The closing movement is damped by a damping device.

[0008] It is therefore an object of the present invention to provide a piece of furniture with a pivoting drive by means of which a force acting on an actuating arm can be flexibly adjusted for different positions of the actuating arm.

[0009] Furniture refers to furnishings for a room, which can also include household appliances such as a refrigerator.

[0010] This problem is solved by a piece of furniture having the features of claim 1.

[0011] The piece of furniture according to the invention comprises a pivot drive with a rotatable actuating arm that is connected in a rotationally fixed manner to a spring assembly and can be pivoted together with the latter about a rotation axis. The spring assembly acts on a pressure piece that can be moved along a control cam that is adjustable relative to the rotation axis of the actuating arm to adjust the spring force of the spring assembly. The actuating arm is connected to the movable furniture part via a multi-joint connection, wherein the force exerted by the spring assembly on the control cam can be adjusted additionally or alternatively. This allows the control cam and the rotation axis for the actuating arm and the spring assembly to be arranged on opposite sides of the spring assembly, so that the relative adjustment options on the control cam are flexible and the travel path of the pressure piece along the control cam is not structurally limited.This results in favorable leverage ratios and a simple structure, since the actuating arm is connected to the spring assembly in a rotationally fixed manner and the control cam is adjusted relative to the fixed axis of rotation to adjust the spring force.

[0012] Preferably, the control cam can be continuously adjusted using adjusting means. This enables precise adjustment of the spring forces acting on the actuating arm. The rotary actuator can comprise a housing on or in which the control cam is adjustably mounted, for example via guide means, threaded adjustments, eccentric adjustments, worm adjustments, or other mechanical means. The control cam can be mounted so that it can rotate and / or slide relative to the axis of rotation of the actuating arm in order to enable flexible adjustment. If the control cam is adjustable in the direction of action of the spring assembly, the magnitude of the force applied by the spring assembly can be changed. Alternatively, this is also possible by changing the preload of the spring assembly.If, on the other hand, the inclination of the control cam is changed, the force acting in a certain opening position of the actuating arm is adjusted, which is particularly advantageous for flaps of different weights, since the center of gravity shifts outwards from a furniture body when opening, and thus, depending on the opening position, different spring forces are required to compensate for the flap weight.

[0013] In a further embodiment, the spring assembly preloads the actuator arm in the closing direction in a closing region, and in an opening region adjacent to the closing region, the spring assembly preloads the actuator arm in the opening direction. As a result, the actuator arm passes through a dead center during an opening movement, and the direction of force on the actuator arm changes depending on the position of the actuator arm. In this arrangement, the spring assembly pivots in both directions of rotation during the opening movement.

[0014] In a further embodiment, the spring assembly preloads the actuating arm in the closing direction in a closing area, and in an opening area adjacent to the closing area, the spring assembly preloads the actuating arm in the opening direction. The change in the direction of action of the spring is achieved by the shape of the control cam. At the beginning of an opening movement of the actuating arm, a section of the control cam is traversed during which the spring assembly is tensioned. As the opening movement continues, the spring assembly is released. With this arrangement, the spring assembly pivots in only one direction of rotation during the opening movement.

[0015] The actuator arm can be connected to a flap or door via a multi-joint connection. The pivot actuator is preferably designed as a flap fitting to pivot a flap around a horizontal axis. However, other applications are also possible. The flap can thus perform the movement of a flap, a lid, or a bar compartment. The multi-joint connection can be designed as a four-joint connection with two parallel levers or a seven-joint connection, but other multi-joint connections can also be provided on the pivot actuator.

[0016] To ensure that even high forces can be transmitted to the actuating arm via the spring assembly, the control cam preferably has a metal guideway. The pressure piece can also have a roller with at least one metal surface, preferably made entirely of metal, so that high forces can be transmitted between the pressure piece and the guideway.

[0017] For a flat spring assembly design, it can comprise several coil springs arranged side by side, guided linearly in the direction of action of the spring assembly. Instead of coil springs, disc springs, leaf springs, or other compact springs can also be used.

[0018] Preferably, the control cam is immobile relative to the housing during an opening and / or closing movement of the movable furniture part, so that a furniture body, the control cam, and the housing are arranged stationary, while the movable furniture part and the spring assembly move. The axis of rotation around which the spring assembly rotates with the actuating arm can be arranged stationary in the housing, so that the spring assembly pivots with the actuating arm around this axis of rotation.

[0019] In one embodiment of the multi-joint connection, a lever has two axes of rotation for moving the movable furniture part and another joint or curved guide for indirect coupling with the actuating arm. For effective force transmission, a pressure piece can be arranged on the actuating arm, which interacts with the curved guide of the lever.

[0020] The total pivot angle of the spring assembly around the rotation axis from the closed position to the fully open position of the movable furniture part can be greater than 10°, for example between 10° and 60°.

[0021] The rotary actuator can also include one or more dampers that slow the actuator arm before reaching the closed position and / or a maximum opening position. Such dampers can be linear dampers or rotary dampers, either within a multi-joint connection or mounted on the spring assembly.

[0022] The pivot drive according to the invention is used in a piece of furniture, in particular to pivot a flap. According to the invention, the pivot drive is arranged in a side wall of a furniture body, so that the internal usable volume of the furniture body is not reduced by the pivot drive. If the pivot drive is provided in a side wall, the side wall can have a recess for receiving a housing of the pivot drive. The housing of the pivot drive then has an opening facing the front, which allows one or more articulated arms to move out of the side wall or the housing of the pivot drive when a flap is opened.

[0023] According to the invention, the side wall has a plate-shaped core having a first end face and further end faces, wherein a recess is arranged in the core, which extends at least along a section of the first end face of the side wall and serves to accommodate a flap fitting that guides a movable furniture part. The plate-shaped core of the side wall is preferably arranged between two laterally applied cover layers. The core can optionally have two core halves, which lie on top of one another with their side surfaces opposite the respective cover layers and have recesses that complement one another to form the recess. In such a side wall, the pivot drive is arranged on a side wall of the furniture.

[0024] The invention will be explained in more detail below using several exemplary embodiments with reference to the accompanying drawings. They show: Fig. 1 to 3 several views of furniture with different flap fittings; Fig. 4A to 4H show several views of the assembly of a piece of furniture with the arrangement of a swivel drive in a side wall of the furniture; Fig. 5 a perspective view of a modified piece of furniture with a swivel drive in the side walls; Fig. 6A to 6G show several views of a rotary actuator in different positions according to a first embodiment; Fig. 7A to 7D show several views of a rotary actuator in different positions according to a second embodiment; Fig. 8A to 8D show several views of a rotary actuator in different positions according to a third embodiment; Fig. 9A to 9D show several views of a rotary actuator in different positions according to a fourth embodiment, and Fig. 10A to 10C show several views of a rotary actuator in different positions according to a fifth embodiment.

[0025] A piece of furniture 1 comprises a cabinet-shaped furniture body 2 with side walls 10, a top panel 15, and a base 14, on which a flap 3 is pivotably mounted. A flap fitting 4 is provided for this purpose, by means of which the flap 3 can be pivoted upward, as schematically illustrated by the arrow. The flap fitting 4 is preloaded via a pivot drive (not shown here), with the spring force depending on the opening position of the flap 3.

[0026] In Fig. 1, the flap fitting 4 is designed, for example, as a multi-joint connection, in particular as a seven-joint connection. It is also possible to design the flap fitting as a four-joint connection, as shown in the Fig. 2 and Fig. 3. A flap 3 is pivotably mounted on the furniture body 2, which flap is movable by two parallel levers 5 and 6, which are held by a connection 7 or 7' on the levers 5 and 6. Fig. 2, the flap 3 is pivoted essentially forwards and upwards, while in Fig. 3 levers 5' and 6' with a modified connection 7' are provided, by means of which the flap 3 can be pivoted along another curved path at least partially over the upper floor 15.

[0027] The flap fittings 4 according to the Fig. 1 to 3 can be fixed either on an inner side of the side walls 10 or in the side walls 10.

[0028] In order to provide a fitting in a side wall 10, with reference to the Fig. 4A to 4H describe a corresponding assembly method. A side wall 10 comprises an inner core 11, for example made of an MDF or HDF or lightweight construction board, in which a recess 12 is formed, for example by milling. The core 11 is covered on opposite sides by cover layers 13, which also cover the recess 12, forming a pocket-shaped receptacle that is open only at one front end.

[0029] As in Fig. 4C, a fitting 20 with a housing 21 can be inserted into the recess 12. The housing 21 has a width that corresponds to the width of the core 11 and can be, for example, between 12 mm and 22 mm, in particular 12 mm to 17 mm. The housing 21 can also be narrower than the width of the core if the housing 21 is inserted into the side in a different way. The housing 21 comprises two spaced-apart plates, between which levers of a multi-joint connection are provided, the axes of rotation of which are at least partially fixed to the housing 21. In the illustrated embodiment, the lower arm 22 is rotatably mounted on a rotation axis 23 of the housing 21. Furthermore, an upper arm 24 is arranged at a distance from the lower arm 22 and is provided via a hollow chamber of the housing 21 arranged in a receptacle 27.

[0030] In Fig. 4D, the side walls are shown without cover layers 13, and it can be seen that the fitting 20 is inserted with the housing into the recess 12 of the core 11 in a substantially form-fitting manner. Flap parts 25 and 26 are mounted on the arms 22 and 24 of the fitting 20, with an upper flap part 25 being held on the arm 24 and a lower flap part 26 being held on the lower arm 22, and the two flap parts 25 and 26 being connected to one another via a hinged connection, with the flap formed from the flap parts 25 and 26 folding open when opened.

[0031] In the Fig. 4E and Fig. 4F shows two positions of the furniture 1, with the side walls 10 closed by the cover layers 13, so that the housing 21 of the fitting 20 is no longer visible. When the flap, consisting of the flap parts 25 and 26, is opened, the arms 22 and 24 protrude forward from the housing 21 of the fitting.

[0032] In the Fig. 4G and Fig. 4H shows the furniture with the fitting 20 in an opening position, and it can be seen that the fitting 20 is received with the housing 21 in the side wall 10.

[0033] In Fig. 5 shows a modified piece of furniture in which a furniture body has several adjacent interior spaces, and one or more central partitions are provided between the two outer side walls. A fitting 20 is also provided on each central partition, so that a flap with flap parts 25' and 26' is significantly wider than in the previous embodiment. The flap parts 25' and 26' are held to the furniture body by several fittings 20. The number of partitions can be freely selected depending on the width of the furniture.

[0034] In Fig. Figure 6A schematically illustrates the fitting with a pivot drive 30 according to the invention, which is arranged in the housing 21. The fitting 20 is designed as a seven-joint hinge and comprises two pivot axes A1 and A2 arranged stationary on the housing 21, which form an articulated connection via joints with five additional pivot axes A3 to A7, to which the flap 3 is fixed at a connection 38. Such multi-joint connections are known in various variants and are therefore only shown schematically.

[0035] The pivot drive 30 comprises an actuating arm 32, which is rotatably mounted about a rotation axis 31, which is stationary on the housing 21. The actuating arm 32 is connected via a movable joint 39 to an articulated lever 36, which is connected via another joint 40 to a lever 37 of the multi-joint arrangement. The lever 37 is designed as a double lever, so that the pivot point A3 and the joint 40 are always pivoted at the same distance about the rotation axis A1.

[0036] The actuating arm 32 is connected in a rotationally fixed manner to a spring assembly 33, which comprises one or more springs that are linearly movable and compressible and expandable on a linear guide, for example, by rods, sleeves, or other linear guide elements. The spring assembly 33 is mounted on one side on a rotation axis 31. On the other side of the spring assembly 33, the spring assembly 33 acts on a pressure piece 34. The pressure piece 34 is designed as a roller, in particular made of metal, and is movable along a control cam 35. The control cam 35 is adjustably held in the housing 21 and is preferably also made of metal, for example steel.

[0037] The control cam 35 can be adjusted relative to the rotational axis 31, as indicated by the two arrows. The control cam 35 can first be compressed or expanded in the effective direction of the spring assembly 33, i.e., in the direction of a line between the rotational axis 31 and an axis of the pressure piece 34, by adjusting the control cam 35 accordingly. For this purpose, appropriate adjustment means, in particular threaded adjustments, eccentrics, or worms, can be provided on the control cam. These adjustment means are supported on the housing 21 and thus enable adjustment of the control cam 35. To create the same effect, it is also possible to compress or expand the spring assembly 33 using appropriate adjustment means, in particular threaded adjustments, eccentrics, or worms.

[0038] In addition to the linear adjustment, the control cam 35 can also be pivotable, preferably about a pivot point which, in a closed position of the fitting, is adjacent to the pressure piece 34. This allows the force acting on the actuating arm 32 by the spring assembly 33 to be adjusted for different opening positions of the flap 3 without the control cam 35 having to be replaced. Since, with flaps of different widths, different weights act on the actuating arm 32 depending on the opening position, the spring force for different opening positions can be changed by such a pivoting adjustment. The pivot drive 30 according to the invention preferably comprises both a linear adjustment and a pivoting adjustment for the control cam 35, although further adjustment options can also be provided optionally; for example, individual sections of the control cam 35 can be adjusted relative to one another.

[0039] In Fig. 6A shows the closed position of the flap 3, in which it essentially vertically covers an opening on the furniture body 2. If the flap 3 is pivoted in the opening direction, as Fig. As shown in Figure 6B, the multi-joint arrangement with the lever 37 moves counterclockwise around the rotation axis A1, and a compressive force is transmitted to the articulated lever 36, whereby the actuating arm 32 is rotated clockwise through the rotation axis 31. As a result, the pressure piece 34 also moves clockwise along the control curve, which is curved towards the spring assembly 33, so that when the spring assembly 33 moves clockwise, the pressure piece 34 is pressed against the spring assembly 33, so that when the flap 3 is opened, the forces act in the closing direction and must be overcome by the user when opening the flap 3. The flap 3 is opened according to Fig. 6C is moved further in the opening direction, and in a predetermined opening position, for example, at an angle of the flap 3 between 20° and 30° to the closed position, a dead center is passed through. In the area of the dead center, the joint 40 is located on a line that runs through the rotation axis A1 and the articulated lever 36. The pressure piece 34 has been moved along the control cam 35 to a maximum position. If the flap 3 is moved from the Fig. 6C shown dead center position further in the opening direction, as shown in Fig. As shown in Figure 6D, by turning the double lever 37 counterclockwise, the articulated lever 36 is pulled over the joint 40, so that the actuating arm 32 is now rotated counterclockwise about the rotation axis 31. As a result, the pressure piece 34 moves back along the control cam 35, and the spring assembly 33 is relaxed during this movement, so that the movement of the flap 3 is supported by the spring assembly 33.

[0040] The flap 3 can now be opened according to the illustration of the Fig. 6E, Fig. 6F and Fig. 6G can be moved further in the opening direction, for example up to a maximum opening position of 100° to 120° relative to the closed position. During this rotary movement, the actuating arm 32 is pivoted counterclockwise, and the pressure piece 34 moves accordingly along the control cam 35, which is designed such that the spring assembly 33 relaxes during this rotary movement. As a result, the weight force exerted by the flap 3 on the fitting is at least partially compensated by the spring assembly 33, whereby it is possible to adjust the spring assembly 33 with the actuating arm 32 such that the weight force of the flap 3 is fully compensated and the user essentially only has to apply the forces to move the flap 3. The forces of the spring assembly 33 can also be adjusted such that the flap opens automatically from a certain opening angle.The control cam can also be designed, independently of the spring assembly 33, so that the flap opens automatically from a certain opening angle.

[0041] The flap 3 is positively guided relative to the pivot drive 30, so that during a closing movement the opposite movements are executed. First, when closing from the Fig. 6G to the position shown in Fig. 6C, forces are applied by the user to recompress the spring assembly 33, which is pivoted about the rotation axis 31 and is compressed by the pressure piece 34 and the control cam 35. When the dead center is reached, no more force is transmitted via the spring assembly 33 to the actuating arm 32, and only upon a further closing movement does the spring assembly 33 then act in the closing direction. The flap 3 can be preloaded in a closing range of, for example, 0° to 20° or 0° to 30° in the closing direction via the pivot drive 30 and is preloaded in the opening direction via the pivot drive 30 in an opening range adjacent to this closing range.

[0042] Optionally, the pivot drive 30 can include a damper, for example, a linear damper, which ensures that the flap 3 is decelerated before reaching the closed position and / or the maximum opening position, thus preventing loud impact noises. Such a damper can be attached, for example, to the spring assembly 33 or the actuating arm 32 or to the housing 21 to dampen the pivoting movement of the spring assembly.

[0043] In the following embodiments, further rotary actuators are shown, whereby the same components have the same reference numerals as in the embodiment of the Fig. 6. Therefore, only the differences to the one in Fig. 6 shown embodiment in detail.

[0044] In the Fig. In the embodiment shown in Figures 7A to 7D, the spring assembly 33 is no longer arranged with the direction of action essentially vertically in the closed position of the flap 3, but rather at an angle. This allows the pressure piece 34 and the control cam 35 to be arranged closer to the flap 3, which facilitates the actuation of an adjustment mechanism from a front side of the furniture body. Otherwise, as in the previous embodiment, the actuating arm 32 is coupled via an articulated lever 36 to the multi-joint connection, to which the flap 3 is also held. Otherwise, the mode of operation of the pivot drive with the spring assembly 33 acting on the pressure piece 34, which can be moved along the control cam 35, is the same as in the previous embodiments.

[0045] In the Fig. Figures 8A to 8D show another embodiment of a pivot drive, in which the actuating arm 32 is again connected to the flap 3 via a joint lever 36 with a multi-joint connection. The spring assembly 33 is arranged rotated in the housing 21 of the fitting 20 compared to the other embodiments, with the pressure piece 34 and the control cam 35 facing the rear of the furniture body. The rotation axis 31 of the actuating arm 32, however, is located adjacent to the flap 3.

[0046] In the Fig. 9A to 9D show a further embodiment of a pivot fitting in which a modified control cam 35' is provided, which serves to guide a modified pressure piece 34'. The control cam 35' is designed as a linear guide, which is arranged inclined to the direction of action of the spring assembly 33, so that when the pressure piece 34' is moved relative to the control cam 35', the spring assembly 33 is relaxed or tensioned.

[0047] In the embodiment of the Fig. 9A to 9D, no dead center is passed through when opening the flap 3. Instead, the pressure piece 34' moves linearly along the control cam 35' over the entire pivoting range, so that the spring assembly 33 only moves in one direction during the opening movement. The arrangement of the actuating arm 32 and the connection between the actuating arm 32 and the lever 37 allows a change in the direction of the closing and opening force to be generated.

[0048] In addition, the rotary actuator 30 is Fig. In the embodiment shown in Figures 9A to 9D, the actuating arm 32 is not coupled via a joint 40, but rather a further pressure piece 45 is provided on the actuating arm 32, for example a roller that can be moved along a curved guide 41. The curved guide 41 is connected in a rotationally fixed manner to a lever 37 of the multi-joint arrangement, and by rotating the curved guide 41 about the rotation axis A1, the pressure piece 45 and thus the actuating arm 32 are pivoted. When the flap 3 is opened, the curved guide 41 pivots counterclockwise, and the actuating arm 32 also pivots counterclockwise.

[0049] In the Fig. 10A to 10C shows a further embodiment in which a spring assembly 33 is coupled in a rotationally fixed manner to an actuating arm 32, to which a pressure piece 45 is fixed. The pressure piece 45 is again movable along a curved guide 41, which is pivoted counterclockwise when the flap is opened. The position of the spring assembly 33 and the dimensions are different from the Fig. 9 shown embodiment is different.

[0050] The illustrated embodiments can be combined with each other as desired in order to modify the transmission mechanism from the flap 3 or another movable furniture part to the control cam 35 or 35'. List of reference symbols 1 furniture 2 furniture body 3 flap 4 flap fitting 5.5' lever 6, 6' lever 7, 7' connection 10 Side wall 11 core 12 recess 13 Top layer 14 Floor 15 Topsoil 20 fittings 21 housings 22 Arm 23 axis of rotation 24 arms 25, 25' flap part 26, 26' flap part 27 recording 30 rotary actuator 31 axis of rotation 32 Actuating arm 33 spring package 34, 34' pressure piece 35, 35' control curve 36 articulated levers 37 levers / double levers 38 Connection 39 joint 40 joint 41 Curve guidance 45 pressure piece A1 axis of rotation A2 rotation axis A3 rotation axis A4 rotation axis A5 rotation axis A6 rotation axis A7 rotation axis

Claims

[1] Furniture (1) with a pivot drive (30) for a movable furniture part, wherein the pivot drive (30) is arranged in a side wall (10) of the furniture (1) and the side wall (10) has a plate-shaped core (11) which has a first end face and further end faces, and wherein a recess (12) is arranged in the core (11), which extends at least along a section of the first end face of the side wall (10) and serves to receive a flap fitting (4) which guides a movable furniture part, and the pivot drive (30) comprises the following: - an actuating arm (32) pivotably mounted about a rotation axis (31); - a spring assembly (33) with at least one spring guided linearly in one direction of action, - a pressure piece (34, 34') connected to the spring assembly (33) and movable along a control cam (35, 35'), - a housing (21) on or in which the pivot drive is mounted, wherein the actuating arm (32) is connected to the spring assembly (33) in a rotationally fixed manner and can be pivoted therewith about the axis of rotation (31), wherein the actuating arm (32) is connected to the movable furniture part via a multi-joint connection and the control cam (35, 35') is adjustable relative to the axis of rotation (31) for adjusting the spring force of the spring assembly (33) and / or the force effect of the spring assembly (33) on the control cam is adjustable. [2] Furniture (1) according to claim 1, characterized by that the control cam (35, 35') is continuously adjustable via adjusting means. [3] Furniture (1) according to claim 1 or 2, characterized by that the control cam (35) is held adjustably on or in the housing (21). [4] Furniture (1) according to one of the preceding claims, characterized by that the control cam (35, 35') is mounted rotatably and / or displaceably relative to the axis of rotation (31) of the actuating arm (32). [5] Furniture (1) according to one of the preceding claims, characterized by that the control cam (35, 35') is adjustable in the direction of action of the spring assembly (33) and / or the spring assembly (33) is compressed or expanded by corresponding adjusting means in relation to the force acting on the control cam (35, 35'). [6] Furniture (1) according to one of the preceding claims, characterized by that the spring assembly (33) preloads the actuating arm (32) in a closing direction in a closing area and in an opening area next to the closing area the spring assembly (33) preloads the actuating arm (32) in the opening direction. [7] Furniture (1) according to one of the preceding claims, characterized by that the actuating arm (32) is connected to a flap (3) or a door via a multi-joint connection. [8] Furniture (1) according to one of the preceding claims, characterized by that the control cam (35, 35') has a guide track made of metal. [9] Furniture (1) according to one of the preceding claims, characterized by that the movable furniture part is kept in balance at least over part of the opening area by the spring assembly (33) and the control cam (35). [10] Furniture (1) according to one of the preceding claims, characterized by that the pressure piece (34, 34') is designed as a roller, in particular made of metal. [11] Furniture (1) according to one of the preceding claims, characterized by that the spring assembly (33) comprises a plurality of springs arranged next to one another, which are guided linearly in the direction of action of the spring assembly (33). [12] Furniture (1) according to one of the preceding claims, characterized by that the pivot drive (30) is designed as a flap fitting (4). [13] Furniture (1) according to one of the preceding claims, characterized by that the pivot drive (30) has a damper for braking the actuating arm (32) before the closing position and / or the maximum opening position. [14] Furniture (1) according to one of the preceding claims, characterized by that the control cam (35) is immovable relative to the housing (21) during an opening and / or closing movement of the movable furniture part. [15] Furniture (1) according to one of the preceding claims, characterized by that the axis of rotation (31) around which the spring assembly (33) rotates with the actuating arm (32) is arranged in a fixed position in the housing (21), so that the spring assembly (33) pivots with the actuating arm (32) around the axis of rotation (31). [16] Furniture (1) according to one of the preceding claims, characterized by that a lever (37) of the multi-joint connection has two axes of rotation (A1, A3) for moving the movable furniture part and has a further joint (40) or a curved guide (41) for indirect coupling to the actuating arm (32). [17] Furniture (1) according to claim 16, characterized bythat the actuating arm (32) is connected to the lever (37) of the multi-joint connection by an articulated lever (36). [18] Furniture (1) according to claim 16, characterized by that a pressure piece (45) is arranged on the actuating arm (32), which cooperates with the curved guide of the lever (37). [19] Furniture (1) according to one of the preceding claims, characterized by that the total pivot angle of the spring assembly (33) about the rotation axis (31) from the closed position to the fully open position of the movable furniture part is greater than 10°. [20] Furniture according to claim 1, characterized by that the plate-shaped core (11) of the side wall (10) is arranged between two laterally applied cover layers (13). [21] Furniture according to claim 20, characterized bythat the core (11) has two core halves which lie on top of one another with their side surfaces opposite the respective cover layers (13) and have recesses which complement one another to form the recess (12).

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