Furniture drive device for driving a movable furniture part

Abstract

A furniture drive (1) for driving a movable furniture part (101), comprising at least one electric motor (2), at least one actuator (3) for applying a force to the furniture part (101) to be driven, the actuator preferably being movable between two end positions, and a transmission mechanism (4) interposed between the electric motor (2) and the actuator (3), wherein the at least one electric motor (2) has a maximum diameter of less than 18 mm, preferably less than 16 mm.

Description

[Technical Field]

[0001] The present invention relates to a furniture drive for driving a movable furniture part, the furniture drive comprising at least one electric motor, at least one actuator, preferably reciprocable between two end positions, for applying a force to the furniture part to be driven, and a transmission mechanism interposed between the electric motor and the actuator, and to a piece of furniture comprising at least one movable furniture part, preferably in the form of an upwardly openable flap, and at least one furniture drive.

[0002] Such furniture drives with electric motors are already known in the prior art. The furniture drives, for example, allow automatic opening of furniture parts. Servo motors are typically used in this case. The furniture drives have a relatively large structural form and, in the case of a folding clasp, are mounted on the outside of the folding clasp.

[0003] On the one hand, this takes up more space, and on the other hand, it makes the overall picture look less appealing.

[0004] SUMMARY OF THE INVENTION The object of the present invention is to provide an improved furniture drive compared to the prior art, and furniture equipped with such an improved furniture drive.

[0005] This problem is solved by the features of independent claims 1 and 17.

[0006] Therefore, according to the invention it is specified that the at least one electric motor has a maximum diameter of less than 18 mm, preferably less than 16 mm.

[0007] This makes it possible to provide a furniture drive with a small required space, in particular to arrange such a furniture drive concealed within the wall of the furniture, which improves the overall appearance of the furniture.

[0008] In the furniture according to the invention, at least one such furniture drive is provided, and the furniture part is movably supported on the furniture via the at least one furniture drive.

[0009] Further advantageous embodiments of the invention are defined in the dependent claims.

[0010] It may be specified that the at least one electric motor is preferably configured as an outer rotor motor or as a disk rotor motor.

[0011] By using this type of motor, a reduction in the construction size of the electric motor can be easily achieved.

[0012] It may be specified that a planetary gear transmission is interposed between the at least one electric motor and the transmission mechanism.

[0013] This allows the rotational speed of the electric motor to be adapted to each furniture drive.

[0014] In this case, it may be advantageously specified that the planetary gear mechanism essentially forms a structural unit together with the at least one electric motor.

[0015] Furthermore, it may be advantageously specified that the planetary gear transmission has a maximum diameter of less than 18 mm, preferably less than 16 mm.

[0016] Finally, it may be particularly preferred if the largest diameter of the planetary gear transmission substantially corresponds to the largest diameter of the at least one electric motor.

[0017] This ensures that the planetary gear transmission does not increase the space required for the furniture drive and that the smallest possible construction size of the electric motor and planetary gear transmission can be achieved.

[0018] In one embodiment, it may be specified that the furniture drive comprises at least one housing.

[0019] The housing can serve, on the one hand, to protect the furniture drive device and, on the other hand, to arrange the components of the furniture drive device.

[0020] It may be specified that the housing has at least one cutout for accommodating at least one electric motor.

[0021] Therefore, the electric motor can be easily supported.

[0022] Suitably, the housing may be specified to have a maximum width of less than 18mm, preferably less than 16mm.

[0023] It may be particularly advantageously specified that the maximum diameter of the at least one electric motor corresponds substantially to the maximum width of the housing.

[0024] It can therefore be ensured that the electric motor does not require more space than the housing, and therefore the overall space requirement of the furniture drive can also be kept small.

[0025] It has proven advantageous if the furniture drive has at least one bearing device for supporting the at least one electric motor in and / or against the housing, and if the at least one bearing device is provided with at least one damping element made of sound-absorbing material.

[0026] This makes it possible to avoid excessive acoustic loads during operation of the electric motor, in particular so that the furniture walls or the furniture do not act as resonators.

[0027] It may be specified that the transmission comprises at least one crown gear transmission, bevel gear transmission and / or worm transmission.

[0028] Thus, the rotational movement of the electric motor can be realized accordingly.

[0029] In one embodiment, it may be specified that the powertrain comprises between 3 and 9, preferably 6, powertrain stages.

[0030] Suitably, at least one transmission device may be provided coupling the transmission mechanism to the at least one actuator, preferably the transmission device comprising at least one lever.

[0031] It may further be specified that at least one electric motor and a transmission mechanism are arranged in a first housing, and that the actuator is arranged in a second housing structurally separated from the first housing, and preferably both housings are arranged above each other in a coupled state substantially in one common plane.

[0032] This allows the furniture drive to be designed as space-saving as possible, in particular allowing the furniture drive to be easily arranged within one wall of the furniture.

[0033] Advantageously, - at least one lever assembly pivotally coupling the actuator to the housing; and / or - at least one mechanical energy accumulator is provided which is able to apply a force to the actuator to compensate for the weight of the furniture part to be driven, and / or - the actuator is located substantially completely within the housing in the first end position; It may also be possible.

[0034] With regard to the furniture according to the present invention, it may be specified that the furniture comprises at least one wall and that the housing of the at least one furniture drive device is inserted substantially completely into a recess provided in the wall.

[0035] Therefore, the furniture can be realized in a space-saving manner and with a good appearance.

[0036] Further details and advantages of the invention will be explained in more detail below with reference to the drawings, which are based on illustrative examples. [Brief explanation of the drawings]

[0037] [Figure 1] FIG. 1 is a schematic diagram of furniture. [Figure 2] 1 is a schematic, partially exploded view of a piece of furniture. [Figure 3] 1 is a schematic side view of a furniture drive device; [Figure 4a] 1 is a schematic view of a part of a furniture drive device. [Figure 4b] FIG. 4b is an exploded view of FIG. 4a. [Figure 5] 1 is a schematic cross-sectional view of a part of a furniture drive;

[0038] 1 shows a schematic view of a piece of furniture 100. In this case, the piece of furniture comprises a cabinet consisting of two furniture walls 102, a facing wall 103, a base plate 105 and a top plate 104. Furthermore, a movable furniture part 101 can be seen which is connected to the furniture cabinet via a furniture drive 1, 1a so as to be pivotable about a horizontal axis H.

[0039] FIG. 2 shows the furniture shown in FIG. 1 in a partially exploded view.

[0040] A first housing 5a and a second housing 5b of the furniture drive 1 can be seen, where the housings 5a, 5b suitably have a maximum width B of less than 18 mm, preferably less than 16 mm.

[0041] An electric motor 2 is arranged in a housing 5b, which is only shown diagrammatically in Figure 2. In the housing 5a, in particular, an actuator 3 is arranged pivotably, which is coupled or can be coupled to the furniture part 101.

[0042] Not all furniture drives 1 need to be equipped with an electric motor drive unit: in the illustrated example, only one furniture drive 1 has an electric motor drive unit.

[0043] Alternative configurations of furniture in which the furniture drive 1 according to the invention is used are possible.

[0044] 3 shows a schematic side view of the furniture drive device 1. The housing 5 is divided into a first housing 5a and a second housing 5b, and in this case, parts of the housings 5a and 5b are not shown in order to be able to better illustrate the furniture drive device 1.

[0045] In this case, the furniture drive device 1 has at least one electric motor 2, at least one actuator 3, preferably reciprocable between two end positions, for applying a force to the furniture part 101 to be driven, and a transmission mechanism 4 interposed between the electric motor 2 and the actuator 3.

[0046] A planetary gear mechanism 2a is further interposed between the transmission mechanism 4 and the electric motor 2. It can be seen that the electric motor 2 and the planetary gear mechanism 2a essentially form one structural unit and have the same diameter.

[0047] The electric motor 2 and the transmission mechanism 4 may be arranged in the second housing 5b, as in the illustrated case, and the actuator 3 may be arranged in a first housing 5a that is structurally separated from the second housing 5b, preferably both housings 5a, 5b being arranged one above the other in a coupled state substantially in one common plane.

[0048] At least one transmission 7 is provided which couples the transmission mechanism 4 to the actuator 3, in this case the transmission 7 comprising at least one lever 7a.

[0049] Alternative configurations of the transmission device 7 are possible. In particular, the transmission device 7 is coupled to the power train 4 via a non-circular gear 10.

[0050] At least one lever assembly 8 is provided which pivotally couples the actuator 3 to the housing 5a. In the specific case, this lever assembly 8 forms a seven-joint assembly.

[0051] At least one mechanical energy accumulator 9 is provided, which can apply a force to the actuator 3 to compensate for the weight of the furniture part 101 to be driven. This mechanical energy accumulator 9 may comprise one or more compression springs 9a.

[0052] To transmit the force stored in the mechanical energy accumulator 9 to the actuator 3, a force transmission lever 9b may be provided.

[0053] Furthermore, a force adjusting device 9c may be provided which can be preferably accessed from one end face of the first housing 5a and which can adjust the spring preload of the spring 9c.

[0054] The actuator 3 is arranged substantially completely within the first housing 5a in a first end position which corresponds to the closed position of the furniture part 101.

[0055] The transmission 4 comprises a number of transmission stages which may also incorporate an overload protection clutch and / or a freewheel clutch, and which may be realised by gears 4a of different sizes.

[0056] In this embodiment, the electric motor 2 is coupled to the transmission via a crown gear transmission 4b with an intervening planetary gear transmission 2a, however, any other suitable coupling is also possible, for example via a bevel gear transmission or a worm transmission.

[0057] FIG. 4a shows a schematic view of a part of the furniture drive 1, and FIG. 4b shows an exploded view of FIG. 4a.

[0058] It can be seen that the transmission 4 is arranged in the housing 5b, which makes it possible to achieve a construction of the furniture drive 1 that is as space-saving as possible.

[0059] Furthermore, a recess 5c can be seen in the housing 5b, in which the electric motor 2 is mounted.

[0060] As is clear from the cross-sectional view shown in FIG. 5, this arrangement and dimensions of the electric motor make it possible to realize a furniture drive device with a narrow width.

[0061] In particular, it can be seen that the maximum diameter D of the electric motor 2 corresponds substantially to the maximum width B of the second housing 5b.

[0062] In the alternative embodiment shown in FIGS. 4a to 5, no planetary gear transmission 2a is interposed between the electric motor 2 and the transmission 4. In the alternative embodiment shown in FIGS. [Explanation of symbols]

[0063] 1 Furniture drive unit 2 electric motors 2a Planetary gear transmission mechanism 3 Actuators 4 Transmission mechanism 4a Gear 4b Crown gear transmission mechanism 5. Housing 5a First housing 5b Second housing 6 Bearing device 7 Transmission Device 7a Lever 8 Lever assembly 9 Energy storage device 9a Spring 9b Force transmission lever 9c force adjustment device 10 Non-circular gears 100 Furniture 101 Movable furniture parts 102 Furniture Wall 102a Notch 103 Facing wall 104 Top Plate 105 Bottom plate B Width H horizontal axis

Claims

1. A furniture drive (1) for driving a movable furniture part (101), comprising: at least one electric motor (2); at least one actuator (3), preferably reciprocable between two end positions, for applying a force to said furniture part (101) to be driven; a transmission mechanism (4) interposed between the electric motor (2) and the actuator (3); A furniture driving device (1) comprising: Furniture drive device (1), characterized in that said at least one electric motor (2) has a maximum diameter of less than 18 mm, preferably less than 16 mm.

2. 2. The furniture drive device according to claim 1, wherein the at least one electric motor (2) is configured as an outer rotor motor or a disk rotor motor.

3. 3. The furniture drive device according to claim 1, wherein a planetary gear transmission mechanism (2a) is interposed between the at least one electric motor (2) and the transmission mechanism (4).

4. 4. The furniture drive device according to claim 3, wherein the planetary gear mechanism (2a) essentially forms a structural unit together with the at least one electric motor (2).

5. 5. Furniture drive device according to claim 3 or 4, wherein the planetary gear transmission (2a) has a maximum diameter of less than 18 mm, preferably less than 16 mm.

6. 6. Furniture drive device according to claim 3, wherein the planetary gear mechanism (2a) has a maximum diameter that substantially corresponds to the maximum diameter of the at least one electric motor (2).

7. 7. The furniture drive device (1) according to any one of claims 1 to 6, wherein the furniture drive device (1) comprises at least one housing (5).

8. 8. Furniture drive device according to claim 7, characterized in that the housing (5) has at least one recess (5c) for accommodating the at least one electric motor (2).

9. 9. Furniture drive device according to claim 7 or 8, wherein the housing (5) has a maximum width of less than 18 mm, preferably less than 16 mm.

10. 10. Furniture drive device according to any one of claims 7 to 9, characterized in that the maximum diameter of the at least one electric motor (2) corresponds substantially to the maximum width of the housing (5).

11. 11. The furniture drive device (1) according to claim 7, further comprising at least one bearing device (6) for supporting the at least one electric motor (2) in and / or against the housing (5), the at least one bearing device (6) comprising at least one damping element made of a sound-absorbing material.

12. 12. Furniture drive device according to any one of claims 1 to 11, characterized in that the transmission (4) comprises at least one crown gear transmission, bevel gear transmission and / or worm gear transmission.

13. Furniture drive device according to any one of claims 1 to 12, wherein the transmission (4) comprises 3 to 9, preferably 6, transmission stages.

14. 14. The furniture drive device according to claim 1, further comprising at least one transmission device (7) for connecting the transmission mechanism (4) to the at least one actuator (3), the transmission device (7) preferably comprising at least one lever (7a), a toothed arrangement and an element and / or a belt cooperating with the toothed arrangement.

15. 15. The furniture drive device according to claim 1, wherein the at least one electric motor (2) and the transmission mechanism (4) are arranged in a first housing (5a), and the actuator (3) is arranged in a second housing (5b) structurally separated from the first housing (5a), and preferably both housings (5a, 5b) are arranged one above the other in a coupled state substantially in a common plane.

16. - at least one lever assembly (8) is provided which pivotally couples said actuator (3) to said housing (5); and / or at least one mechanical energy accumulator (9) is provided, capable of applying a force to the actuator (3) to compensate for the weight of the furniture part (101) to be driven, and / or - the actuator (3) is arranged substantially completely within the housing (5) in the first end position; 16. Furniture drive device according to any one of claims 1 to 15.

17. 19. A piece of furniture (100), preferably an upper cabinet, comprising at least one movable furniture part (101), preferably in the form of an upwardly openable flap, and at least one furniture drive (1) according to any one of claims 1 to 16, wherein the furniture part (101) is movably supported on the piece of furniture (100) via the at least one furniture drive (1).

18. 18. The furniture (100) according to claim 17, wherein the furniture (100) comprises at least one wall (102), and the housing (5) of the at least one furniture drive device (1) is substantially completely inserted into a notch (102a) provided in the wall (102).

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