Furniture drive unit

Abstract

A furniture drive (4) for driving a movable furniture part (3) in the form of an upwardly openable flap, comprising at least one electric motor (14), at least one actuator (12) movable between two end positions for applying a force to the furniture part (3) to be driven, and a transmission mechanism (15) interposed between the electric motor (14) and the actuator (12), the at least one electric motor (14) and the at least one actuator (12) being arranged one above the other substantially in a common plane, and the electric motor (14) and the transmission mechanism (15) being interposed between the electric motor (14) and the at least one actuator (12) being arranged one above the other substantially in a common plane. The furniture drive device (4) includes a first housing (10) and a drive mechanism (15), the actuator (12) is disposed in a second housing (9) structurally separated from the first housing (10), and a lever assembly (18) is provided for pivotally connecting the actuator (12) to the housing (9), and the actuator (12) in at least one of both end positions and the electric motor (14) can be substantially completely incorporated into one common furniture plate (11) of the furniture cabinet (2).

Description

[Technical Field]

[0001] The present invention relates to a furniture drive device for driving a movable furniture part, comprising: - at least one electric motor; - at least one actuator movable between two end positions for applying a force to the furniture part to be driven; - a transmission mechanism interposed between the electric motor and the actuator; Equipped with - the at least one electric motor and the at least one actuator are arranged one above the other substantially in one common plane, - the electric motor and the transmission mechanism are disposed within a first housing, and the actuator is disposed within a second housing structurally separated from the first housing; a lever assembly is provided that pivotally couples the actuator to the housing; This relates to furniture drive devices.

[0002] Furthermore, the present invention relates to a piece of furniture, preferably an upper cabinet, comprising a furniture cabinet formed from a furniture plate, a furniture part movable relative to the furniture cabinet, and a furniture drive device for driving the movable furniture part.

[0003] Furniture drive systems with an actuator and an additional electric motor for driving a movable furniture part are already known, for example, from WO 2008 / 134786, WO 2010 / 129979, and WO 2017 / 177247. The actuator has an actuating arm, which is energized by a force accumulator for moving the movable furniture part. Optionally, an electric drive unit can be releasably coupled to the actuator to provide additional movement assistance for the actuating arm. The actuator and the electric drive unit are configured as separate components, and the electric drive unit can be provided as an additional drive module that can be easily replaced if necessary. This has the disadvantage that the construction space of the furniture drive is relatively large when the actuator and the electric drive unit are coupled together, and cannot be used for special applications.

[0004] Further furniture drives are described in DE 102019102057 A1, WO 2020058363 A1, DE 202007006687 A1 and US 2912237 A1.

[0005] SUMMARY OF THE INVENTION The object of the present invention is to provide an improved furniture drive of the type mentioned at the beginning, in which the above-mentioned disadvantages are avoided.

[0006] This problem is solved according to the invention by the features of claim 1. Further advantageous embodiments of the invention are defined in the dependent claims.

[0007] According to the invention, it is specified that the actuator in at least one of the two end positions and the electric motor can be substantially completely integrated into one common furniture plate of the furniture cabinet.

[0008] In this way, the width of the furniture drive can be reduced to such an extent that it can be arranged concealed inside the furniture plate (for example with a maximum thickness of 19 mm or 16 mm) of the furniture, thus allowing for a very compact arrangement of the furniture drive, without limiting the space available inside the furniture cabinet.

[0009] The furniture drive is virtually invisible in the assembled state, which also improves the overall visual impression, for example by enabling a visually pleasing, uniform and flawless surface texture of the inner and outer surfaces of the furniture plate.

[0010] According to one preferred embodiment, it may be specified that the common housing can be placed inside the wall of a furniture plate, preferably having a thickness of less than 20 mm.

[0011] Preferably, it is specified that both housings are arranged one above the other in the coupled state substantially in one common plane.

[0012] Further details and advantages of the invention will become apparent from the following description of the drawings. [Brief explanation of the drawings]

[0013] [Figure 1a] FIG. [Figure 1b] This is an exploded view of furniture. [Figure 2] 1 is a perspective view of an embodiment of a furniture drive device; [Figure 3a] 1 shows an embodiment of a furniture drive with an additionally assembled transmission device with a lever for coupling between the transmission mechanism and the actuator. [Figure 3b] FIG. 3b is a detailed enlarged view of FIG. 3a. [Figure 4a] 10 shows another embodiment of a furniture drive with a transmission device having a toothed arrangement for coupling between the transmission mechanism and the actuator. FIG. [Figure 4b]FIG. 4b is a detailed enlarged view of FIG. 4a.

[0014] 1a shows a piece of furniture 1 in the form of an upper cabinet, which comprises a furniture cabinet 2 and a furniture part 3 that is movable relative to the furniture cabinet 2. The furniture part 3 is made in the form of an upwardly openable flap. The movable furniture part 3 is mounted so as to be movable about a horizontally extending axis 5 relative to the furniture cabinet 2 via a furniture drive 4.

[0015] The furniture 1 may comprise, as in the illustrated example, a facing wall 6, a top plate 7 and a bottom plate 8.

[0016] The furniture 1 may comprise a furniture plate 11 in the form of a side wall, in which at least one housing 9, 10 of the furniture drive 4 is inserted substantially completely into a recess 13a, 13b, respectively (FIG. 1b) in the furniture plate 11.

[0017] Figure 1b shows the furniture 1 shown in Figure 1a in an exploded view. An electric motor 14 (Figure 2) is arranged in a housing 10, which is only shown diagrammatically in Figure 1b. An actuator 12 is pivotally arranged in the housing 9, which is coupled or can be coupled to the movable furniture part 3.

[0018] Both housings 9, 10 suitably have a maximum width 32 of less than 18 mm, preferably less than 16 mm.

[0019] It is not necessary for all furniture drives 4 to be equipped with an electric motor drive unit: in the illustrated case, only one of the two furniture drives 4 has an electric motor drive unit.

[0020] Alternative configurations of furniture 1 in which the furniture drive 4 according to the invention is used are possible.

[0021] The furniture 1 is preferably formed as an upper cabinet and has the following characteristics: - at least one furniture cabinet 2 formed from furniture plates 11; - at least one movable furniture part 3 in the form of an upwardly openable flap, - at least one furniture drive 4, in which the furniture part 3 is movably supported on the furniture 1 via the at least one furniture drive 4, in which the furniture drive 4 has at least one electric motor 14 (Fig. 2), at least one actuator 12 movable between two end positions for applying a force to the furniture part 3 to be driven, and a transmission 15 (Fig. 2) interposed between the electric motor 14 and the actuator 12; Equipped with The actuator 12 in at least one of both end positions and the electric motor 14 are substantially completely integrated in one common furniture plate 11 of the furniture cabinet 2 .

[0022] According to a preferred embodiment, the housing 9, 10 of the at least one furniture drive 4 is inserted substantially completely into the cutout 13a, 13b of the furniture plate 11.

[0023] Figure 2 shows a furniture drive 4 for driving a movable furniture part 3, which in this case has at least one housing 9, 10, at least one electric motor 14, at least one actuator 12, preferably movable between two end positions, for applying a force to the furniture part 3 to be driven, and a transmission mechanism 15 interposed between the electric motor 14 and the actuator 12.

[0024] The electric motor 14 and the transmission mechanism 15 are arranged in a first housing 10, and the actuator 12 is arranged in a second housing 9 that is structurally separated from the first housing 10, in which case both housings 9, 10 are arranged above each other in a connected state and substantially in one common plane.

[0025] The electric motor 14 can be configured, for example, as an outer rotor motor or a disk rotor motor, which are characterized by a relatively flat construction, so that the electric motor 14 can be integrated into the wall thickness of the furniture plate 11. An outer rotor motor or a disk rotor motor can provide a high driving force in proportion to the diameter of the motor.

[0026] At least one drive belt 26 may be provided for transmitting power from the electric motor 14 to the transmission 15. The use of the drive belt 26 has the advantage that it serves as a first transmission stage for reducing the high rotation speed of the electric motor 14. Furthermore, the drive belt 26 can also reduce the noise generation of the furniture drive 4.

[0027] At least one transmission device 17 is provided which can couple or alternatively releasably couple the transmission mechanism 15 to the actuator 12. This transmission device 17 can have at least one lever 17a and / or at least one tooth row 31a, 31b (FIGS. 4a, 4b). Alternative configurations of the transmission device 17 are possible.

[0028] According to a possible embodiment, at least one lever 17a of the transmission device 17 is - coupled or releasably coupleable to at least one powertrain element 24 of the powertrain 15; and / or - coupled or releasably coupled to at least one pivotable lever 25 of the actuator 12; and / or - is arranged at least partially inside and / or at least partially outside one of the housings 9, 10 of the furniture drive 4; and / or - at least partially bent, and / or - preferably detachably coupleable to the actuator 12 and / or the transmission mechanism 15, even if the actuator 12 and / or the electric motor 14 are already pre-assembled in the furniture cabinet 2 It may be specified that:

[0029] At least one lever assembly 18 is provided which pivotally couples the actuator 12 to the housing 9. In this case, this lever assembly 18 forms a seven-joint assembly.

[0030] At least one mechanical energy accumulator 19 is provided which can apply a force to the actuator 12 to compensate for the weight of the furniture part 3 to be driven.

[0031] The mechanical energy accumulator 19 may for example comprise one or more compression springs 19a and / or at least one tension spring and / or at least one gas pressure spring.

[0032] At least one force transmission lever 20 may be provided for transmitting the force stored in the mechanical force store 19 to the actuator 12 .

[0033] Furthermore, a force adjusting device 21 may be provided, which can be preferably operated from one end face of the housing 9 and which can adjust the preload force of the force accumulator 19 .

[0034] The actuator 12 is arranged substantially completely within the housing 9 in a first end position which corresponds to the closed position of the movable furniture part 3 .

[0035] The power train 15 comprises a number of power train stages 16 which may also incorporate overload protection clutches and / or freewheel clutches.

[0036] According to a possible embodiment, the first housing 10 and / or the second housing 9 may be: - be substantially rectangular in shape; and / or - has two housing walls 22 partially spaced apart from each other; and / or - each having at least one housing wall 22 arranged in a common plane with the housing wall 22 of one of the housings 9, 10, one above the other, in a connected state; and / or - have longitudinal faces 23 which, in the coupled state, are at least partially in contact with the longitudinal faces 23 of one of the other housings 9, 10; and / or - has a maximum width 32 that is substantially the same as the maximum width 32 of the other housing 9, 10; and / or - has a maximum width 32 of less than 18 mm, preferably less than 16 mm; and / or - has a maximum height that is substantially the same as the maximum height of the other housing 9, 10 It may be specified that:

[0037] For reasons of clarity, the second housing wall 22 for covering the housings 9, 10 is not shown in FIG.

[0038] It can be seen that in the embodiment shown, the electric motor 14 is arranged below the actuator 12 in the position of use of the furniture drive 4 .

[0039] According to a preferred embodiment, it may be specified that the housing 9, 10 of the at least one furniture drive 4 is inserted substantially completely into the cutouts 13a, 13b (FIG. 1b) of the furniture plate 11.

[0040] Furthermore, at least one cover 33 may be provided, which has at least one laterally projecting, preferably substantially annular, flange 33a. This projecting lateral flange 33a can cover the edge area of ​​the recesses 13a, 13b (FIG. 1b) of the furniture plate 11. This makes it possible to avoid laborious reworking of this edge area, even if it is somewhat worn.

[0041] Preferably, it is specified that the actuator 12 is guideable through at least one cover 33 in at least one relative position.

[0042] The at least one cover 33 may be connected to the first housing 10 and / or the second housing 9. Alternatively, the at least one cover 33 can be formed as a separate component from the housings 9, 10, which can be connected to, preferably locked onto, at least one of the housings 9, 10 at the rear side of the furniture drive 4.

[0043] Preferably, at least one cover 33 is specified, which preferably substantially completely surrounds the first housing 10 and / or the second housing 9. This makes it possible to cover the edge areas of the cutouts 13a, 13b (FIG. 1b) in the furniture plate 11, which surround the first housing 10 and / or the second housing 9.

[0044] 3a shows an embodiment of the furniture drive 4 with a transmission 17 to be additionally assembled for the connection between the transmission mechanism 15 and the actuator 12. The transmission 17 can thus be coupled to the furniture drive 4 even if the furniture drive 4 is already pre-assembled in the furniture cabinet 2.

[0045] The transmission device 17 comprises, in the embodiment shown, at least one lever 17 a which is preferably releasably coupleable to the transmission mechanism 15 and / or to the actuator 12 .

[0046] To assemble the lever 17a, the lever 17a is introduceable into the first housing 10; - can be hooked against or into a movably mounted power train element 28 of the power train 15, - It can be turned while in the engaged state, a mounting point 29 of the actuator 12, preferably mountable to a pivotable actuation arm 27;

[0047] Figure 3b shows an enlarged view of the boxed area in Figure 3a. The mounting point 29 of the actuator 12 can be, for example, a pin projecting laterally beyond the actuation arm 27, in which case the lever 17a of the transmission device 17 can be fixed in position on the actuator 12 by means of a retaining element 30, for example a spring clamp.

[0048] In the assembled state, the lever 17 a is arranged partly inside one of the housings 9 , 10 of the furniture drive 4 and / or partly outside one of the housings 9 , 10 of the furniture drive 4 .

[0049] FIG. 4 a shows another embodiment of a furniture drive 4 with a transmission 17 having toothings 31 a , 31 b for the connection between the transmission mechanism 15 and the actuator 12 .

[0050] According to a possible embodiment, at least one tooth row 31a of the transmission device 17 has: - coupled in kinetic connection to the transmission mechanism 15; and / or - the electric motor 14 and the transmission 15 partially project beyond one of the housings 10 in which they are arranged, and / or - cooperates with at least one further toothing 31b connected in a moving connection to the actuator 12, preferably in this case this at least one further toothing 9 protruding partially beyond one of the housings 9 in which the actuator 12 is movably arranged, and / or - configured as a rotatably mounted gear wheel It may be specified that:

[0051] FIG. 4b shows an enlarged view of the boxed area in FIG. 4a.

Claims

1. A furniture drive (4) for driving a movable furniture part (3) in the form of an upwardly openable flap, at least one electric motor (14); at least one actuator (12) movable between two end positions for applying a force to said furniture part (3) to be driven; a transmission mechanism (15) interposed between the electric motor (14) and the actuator (12); Equipped with - said at least one electric motor (14) and said at least one actuator (12) are arranged one above the other substantially in a common plane; the electric motor (14) and the transmission mechanism (15) are arranged in a first housing (10), and the actuator (12) is arranged in a second housing (9) structurally separated from the first housing (10); - a lever assembly (18) is provided which pivotally couples the actuator (12) to the housing (9); In the furniture driving device (4), The furniture drive device (4) is characterized in that the actuator (12) in at least one of the end positions and the electric motor (14) can be substantially completely incorporated into one common furniture plate (11) of the furniture cabinet (2).

2. 2. Furniture drive (4) according to claim 1, characterized in that both housings (9, 10) are arranged one above the other in a connected state substantially in one common plane.

3. The first housing (10) and / or the second housing (9) are - substantially rectangular parallelepiped shaped; and / or - has two housing walls (22) partially spaced apart from each other, and / or - each having at least one housing wall (22) which is arranged in a common plane with one of the housing walls (22) of the other of said housings (9, 10) one above the other in a connected state, and / or - have longitudinal faces (23) which, in the coupled state, are at least partially in contact with the longitudinal faces (23) of one of the other said housings (9, 10), and / or - has a maximum width (32) that is substantially the same as the maximum width (32) of the other said housing (9, 10); and / or - have a maximum width (32) of less than 18 mm, preferably less than 16 mm, and / or - have a maximum height that is substantially the same as the maximum height of the other said housing (9, 10); 3. Furniture drive device (4) according to claim 1 or 2, characterized in that it comprises:

4. 4. The furniture drive device (4) according to claim 1, wherein the electric motor (14) is arranged below the actuator (12) when the furniture drive device (4) is in the operating position.

5. 5. The furniture drive device (4) according to claim 1, wherein at least one transmission device (17) is provided which couples or can couple the transmission mechanism (15) to the actuator (12), and preferably the transmission device (17) comprises at least one lever (17a) and / or at least one tooth row (31a, 31b).

6. The at least one lever (17a) of the transmission device (17) - coupled or releasably coupleable to at least one powertrain element (24) of said powertrain (15), and / or - coupled or releasably coupled to at least one pivotable lever (25) of said actuator (12), and / or - located at least partly inside and / or at least partly outside one of the housings (9, 10) of said furniture drive (4), and / or - at least partially bent, and / or - preferably detachably coupleable to said actuator (12) and / or said transmission mechanism (15), even if said actuator (12) and / or said electric motor (14) are already pre-assembled in the furniture cabinet (2); 6. Furniture drive (4) according to claim 5, characterized in that it is

7. The at least one tooth row (31a, 31b) of the transmission device (17) - coupled in kinetic connection to said transmission mechanism (15), and / or - the electric motor (4) and the transmission (8) partially project beyond one of the housings (10) in which they are arranged, and / or - cooperating with at least one further toothing (31b) connected in a moving connection to said actuator (12), preferably said at least one further toothing (31b) projecting partially beyond one of the housings (9) in which said actuator (12) is movably arranged; and / or - designed as a rotatably mounted gear wheel 7. Furniture drive (4) according to claim 5 or 6, characterized in that it is

8. 8. The furniture drive (4) according to any one of claims 1 to 7, characterized in that the furniture drive (4) has at least one housing (9, 10), which has a maximum width (24) of less than 18 mm, preferably less than 16 mm.

9. 9. Furniture drive device (4) according to any one of claims 1 to 8, characterized in that the at least one electric motor (14) is designed as an outer rotor motor or as a disk rotor motor.

10. 10. The furniture drive device (4) according to any one of claims 1 to 9, characterized in that at least one drive belt (26) is provided for transmitting power from the electric motor (14) to the transmission mechanism (15).

11. at least one mechanical energy accumulator (19) is provided which is able to apply a force to the actuator (12) to compensate for the weight of the furniture part (3) to be driven, and / or - the actuator (12) is arranged substantially completely within the housing (9) in the first end position; 11. Furniture drive (4) according to any one of claims 1 to 10, characterized in that it comprises:

12. At least one cover (33) is provided, through which the at least one actuator (12) can be guided in at least one relative position, preferably the at least one cover (33) comprises: - has at least one laterally projecting, preferably substantially annularly shaped flange (33a), and / or - at least partially covering the edge area of ​​the furniture plate (11) surrounding the furniture drive (4) in the assembled state of the furniture drive (4), and / or - connected to the furniture drive (4) or formed as a separate component that can be preferably releasably connected to the furniture drive (4).

12. Furniture drive (4) according to any one of claims 1 to 11, characterized in that it comprises:

13. A piece of furniture (1), preferably an upper cabinet, at least one furniture cabinet (2) formed from a furniture plate (11); - at least one movable furniture part (3) in the form of an upwardly openable flap, at least one furniture drive (4) according to any one of claims 1 to 12, wherein the furniture part (3) is movably supported on the furniture (1) via the at least one furniture drive (4), the furniture drive (4) having at least one electric motor (14), at least one actuator (12) movable between two end positions for applying a force to the furniture part (3) to be driven, and a transmission (15) interposed between the electric motor (14) and the actuator (12); In the furniture (1), The furniture (1) is characterized in that the actuator (12) in at least one of both end positions and the electric motor (14) are substantially completely integrated in one common furniture plate (11) of the furniture cabinet (2).

14. 14. The furniture (1) according to claim 13, characterized in that the housing (9, 10) of the at least one furniture drive (4) is inserted substantially completely into the cutout (13a, 13b) of the furniture plate (11), and preferably at least one cover (33) at least partially covers the edge area of ​​the cutout (13a, 13b).

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