EP3184720B1 - Device for moving a movable piece of furniture - Google Patents

Description

The invention relates to a device for moving a movable furniture part, as well as a piece of furniture with such a device.

State of the art

Devices of the type described in the introduction are known, for example, in the form of flap fittings for wall cabinets. In a known swivel device, for example, a movable flap element of an upper cabinet is mounted on opposite swivel arms of the swivel device. The swivel device also includes drive units on opposite sides of the furniture body, which are designed to move the swivel arms. The WO 2009/076685 A1 shows a device for moving a furniture flap.

Object and advantages of the invention

The invention is based on the object of providing an alternative device for moving a movable furniture part.

This object is achieved by the features of claim 1.

Advantageous and expedient embodiments of the invention are specified in the dependent claims.

The invention is based on a device for moving a movable furniture part, in particular a door or flap, the device comprising guide means which movably connect the movable furniture part to a furniture body of a piece of furniture, the device comprising a drive device which has an electric drive unit and a Has control unit.

The guide means are designed as flap fittings or furniture hinge. The fitting or the furniture hinge can have a four-bar mechanism.

A first drive unit preferably comprises an electric motor, for example a servomotor. It is also conceivable that the first drive unit is designed as a linear drive, for example as a linear motor.

The essential aspect of the invention is that the drive device drives parts of the guide means in such a way that different spatial movement paths of the movable furniture part can be implemented during an opening process, from a closed starting position on the furniture body to an open position on the furniture body, or vice versa.

The movable furniture part can be movably connected to the furniture body via a single device, for example a fitting or a hinge. It is also conceivable that the movable furniture part is movably connected to the furniture body via two or more particularly similar fittings or guide means or devices that are spaced apart from one another on the furniture, with at least one fitting being designed as a device according to the invention.

In particular, the guide means of the device can be moved by the drive device in such a way that all mechanically realizable movement paths of the device, in particular the guide means, which are predetermined due to the mechanics of the guide means, can be realized.

The different spatial movement paths are not designed to run one behind the other or in a row in a temporal and / or spatial sequence. Different spatial movement paths can advantageously be implemented starting from a common spatial and / or temporal starting point, for example the closed starting position on the furniture body.

The drive device advantageously drives parts of the device in such a way that, for example, a flap fitting can be used both as a swivel fitting, as a lift fitting, as a folding fitting and / or as another fitting variant.

If the device is designed as a swivel fitting, it is conceivable that the swivel fitting is equipped with a swivel arm, which can be rotated at a first end via a first joint of the fitting on the furniture body and at a second end opposite the first end via a second joint of the fitting is mounted on the movable furniture part.

According to the invention, at least one second drive unit for moving the movable furniture part is provided on the device.

According to the invention, the drive device comprises two or more drive units and at least one second drive device has an electric motor. A second drive unit includes, for example, a servomotor.

The drive units advantageously work independently of one another.

As a result, the additional drive unit, for example the second drive unit, can advantageously drive an additional movement of the movable furniture part during the opening process of the movable furniture part, in particular independently of the opening movement of the movable furniture part driven by the first drive unit.

Two drive units are preferably provided on a flap fitting or in particular on a flap fitting side or on a hinge. By means of the two drive units, different spatial movements of the fitting or hinge, which in particular take place simultaneously in terms of time or space, can be implemented.

If the movable furniture part is connected to the furniture body via two or more fittings or hinges, each fitting or each hinge can comprise two drive units. It is also conceivable that in this case a single fitting configured as a device according to the invention has at least two drive units and the further fitting has no or only a single drive unit.

The drive device advantageously comprises exactly two drive units, a first drive unit being provided to move the movable furniture part and / or the device from a closed position on the furniture body to an open position on the furniture body, and the second drive unit being provided to move the movable furniture part Furniture part or parts of the device, for example parts of the guide means, for example to move relative and in particular independently of the device or the remaining guide means and the furniture body.

This realizes a uniform drive for different movement variants or movement paths of the movable furniture part.

It also proves to be advantageous that the movable furniture part and / or part of the device and / or a guide means can be moved by the second drive unit, independently of the first drive unit.

The second drive unit is preferably provided to move the movable furniture part in the open state on the furniture body, in particular independently of the first drive unit, into an end position.

It is also proposed that the first drive unit be arranged on the furniture body. The first drive unit is arranged, for example, on a side wall of the furniture body or a top panel of the furniture body. For example, the first drive unit is mounted on a side surface of the side wall or of the top floor facing towards the interior of the furniture body. It is also conceivable that the first drive unit of the drive device is formed on the furniture hinge.

A design of the furniture fitting as a swivel fitting is conceivable, with a drive unit being arranged on the first joint or on a mounting plate of the furniture fitting, the furniture fitting being fastened to the furniture body via the mounting plate.

As a result, this drive unit can be made comparatively large and powerful in order to also move movable furniture parts with a comparatively high weight, e.g. 30kg.

It is also conceivable that a drive unit is arranged on the furniture body in such a way that it drives two devices that are spaced apart from one another or at least similar guide means of two devices that are spaced apart from one another, in particular synchronously.

It is also advantageous that the second drive unit is formed on an end of the device or the guide means facing the movable furniture part.

According to the invention, the second drive unit is on one The articulation point of the guide means is arranged on the movable furniture part on the device.

The second drive unit is preferably attached to a second joint of the furniture hinge, the furniture hinge being mounted on the movable furniture part via the second joint. The second joint can have a transmission, for example.

As a result, the second drive unit can be designed to be comparatively smaller in comparison to the first drive unit, in particular as a servomotor. The second drive unit can in particular be provided exclusively to drive a rotary movement of the movable furniture part, advantageously about an axis of rotation of the second joint.

According to the invention, a guide means of the device is designed as a lever arm and the length of the lever arm can be changed, the first drive unit being designed to change the length of the lever arm.

As a result, the movable furniture part can be moved by the drive units not only in a rotary movement, but also in a linear adjustment movement. A rotary movement of the movable furniture part caused by the first drive unit can advantageously be superimposed with a linear adjustment movement due to a change in length of the lever arm. For example, it can thereby be possible to change a movement of a flap from a pure pivoting movement on the furniture body (pivoting flap) to a lifting movement (lifting flap), advantageously without changing the fitting.

According to the invention, a lever arm for arrangement between the furniture body and the movable one is on the device Furniture part provided that the movable furniture part is pivotably arranged on the lever arm by means of a movement element, the movement element being able to be driven independently of a movement of the lever arm via gear means with the second drive unit of the drive device.

For example, the movement element can be driven by the second electric drive unit via transmission means in such a way that when the lever arm is stationary, the movement element tilts the movable furniture part, in particular the furniture flap.

It is also conceivable that the guide means comprise a lever arm, the lever arm movably connecting the movable furniture part to the furniture body, the movable furniture part being able to execute a movement relative to and independently of the lever arm by the movement member, the movement member being able to be controlled via rotating gear means, wherein the transmission means are driven by the second drive unit.

For example, the transmission means are designed as a toothed belt or chain. It is also conceivable that the transmission means are designed as a shaft, for example as a cardan shaft.

The transmission means can be designed in such a way that the movable furniture part can be moved relative to the furniture body and / or the lever arm about an axis of rotation that is independent of an opening and / or closing movement. In particular, the transmission means enable the movable furniture part to rotate about two or more axes of rotation. It is also conceivable that axes of rotation are designed to be inclined to one another.

It is further proposed that movements of the drive units can be freely determined by the control unit. The control unit can advantageously be programmed in a comparatively simple manner, for example by means of macros or by importing predefined movement sequences. As a result, the control unit can command different movements of the drive units or output control commands to the drive units.

It is also advantageous that the drive device is designed in such a way that the movable furniture part and / or a part of the device is moved by the second drive unit during an opening process of the movable furniture part relative to the furniture body.

In an advantageous modification, the drive device is designed such that the movable furniture part and / or a part of the device is moved by the second drive unit after an opening process of the movable furniture part has been completed relative to the furniture body by the first drive unit.

It is also advantageous that the drive device is designed in such a way that an opening movement of the movable furniture part relative to the furniture body is initially carried out exclusively by the first drive unit and, in the course of the opening movement, the second drive unit is switched on independently of the drive of the first drive unit, with the second Drive unit drives a movement of the movable furniture part.

Description of the exemplary embodiments

Several exemplary embodiments are explained in more detail with reference to the following schematic drawings, specifying further details and advantages.

Figuren 1 und 2

eine perspektivische Ansicht von seitlich vorne oben ein nicht erfindungsgemäßes Möbel mit jeweils einer Vorrichtungsvariante,

Figuren 3 und 4

eine seitliche Ansicht auf jeweils ein weiteres Möbel mit durchsichtig dargestellter Seitenwand,

Figuren 5 bis 9

eine seitliche Ansicht auf ein Möbel nach den Figuren 3 oder 4, wobei in jeder Figur ein vorstellbarer Bewegungsablauf eines bewegbaren Möbelteils gezeigt ist,

Figuren 10 und 11

eine seitliche Ansicht auf ein weiteres Möbel mit einer Variante einer Vorrichtung in unterschiedlichen Positionen des bewegbaren Möbelteils und

Figur 12

eine seitliche Ansicht auf ein weiteres Möbel mit einer weiteren Ausgestaltung der Vorrichtung mit einem möglichen Bewegungsablauf des bewegbaren Möbelteils.

Show it:

Figures 1 and 2

a perspective view from the side front and top a piece of furniture not according to the invention, each with a device variant,

Figures 3 and 4

a side view of another piece of furniture with a transparent side wall,

Figures 5 to 9

a side view of a piece of furniture after the Figures 3 or 4th , wherein in each figure a conceivable sequence of movements of a movable furniture part is shown,

Figures 10 and 11

a side view of another piece of furniture with a variant of a device in different positions of the movable furniture part and

Figure 12

a side view of another piece of furniture with a further embodiment of the device with a possible sequence of movements of the movable furniture part.

A piece of furniture 1 comprises a box-shaped furniture body 2 and a plate-shaped furniture flap 3 ( Figure 1 ).

Hidden elements and contours of the organs shown schematically are in the Figures 1 and 2 shown by dashed lines for better understanding.

The furniture carcass 2 has a carcass bottom 4, carcass side walls 5, 6 and a carcass cover 7. A rear side of the furniture carcass 2 can be open or designed closed with a panel element or a furniture carcass rear wall (not shown). The furniture flap 3 is movably connected to the furniture body 2 via two fittings 8, 9 formed opposite one another on the furniture body 2. The fittings 8, 9 comprise two lever arms 10, 11 mounted opposite one another on the insides of the furniture body side walls 5, 6. The lever arms 10, 11 are rotatable or pivotable on the side walls 5 and 6 with a first end 15, 16 arranged. With a second end 17, 18 opposite the first end 15, 16, the lever arms 10, 11 are fastened, in particular movably, to a large, flat inside of the furniture flap 3 facing the furniture body 2.

Furthermore, the fitting 8 comprises a first drive unit in the form of an electric motor 12 and a second drive unit in the form of a further electric motor 13, as well as a control unit 37, by means of which the two drive units can be controlled. The fitting 9 has a first drive unit in the form of a further electric motor 14. The electric motors 12 and 14 are each mounted on the fitting 8 and 9 on a mounting plate 15 and 16, respectively. The lever arms 10 and 11 are movably arranged on the inner sides of the furniture body side walls 5 and 6 via the mounting plates 15 and 16, respectively. Furthermore, the electric motors 12 or 14 are coupled to the mounting plate 15 or 16 with the lever arm or 11 in such a way that they can set the lever arms 10 or 11 and thus the furniture flap 3 in motion.

In the area of the second end 17 of the lever arm 10 is the second drive unit attached. The electric motor 13 is provided to drive a movement of the furniture flap 3 relative to the lever arms 10, 11 and / or to the furniture body 2. A second drive unit in the form of the electric motor 13 is advantageously only formed on the fitting 8, since this alone can be sufficient to bring about the desired movement of the furniture flap 3.

In Figure 2 Another variant of a piece of furniture 19 is shown. Fittings 20, 21 arranged opposite one another, which are formed on furniture 19, are driven by a common first drive unit in the form of an electric motor 22. The electric motor 22 is coupled to lever arms of the fittings 20 and 21 via a synchronizer rod 23. The synchronizing rod 23 transmits, for example, a rotary movement generated by the electric motor 22 to the lever arms. For this purpose, the electric motor 22 is mounted on a side surface of the carcass cover 7 facing the furniture carcass interior 24. The electric motor 22 can be mounted centrally between the fittings 20, 21 on the body cover 7, an eccentric mounting is also conceivable. In the event that a single first drive unit is provided for driving two fittings, this single first drive unit can be designed larger or stronger in comparison to the first drive units, which each drive a fitting. In addition, a second drive unit in the form of a further electric motor 25 is formed on the first fitting 20 on the end of the fitting 20 facing the movable furniture part.

In Figure 3 it is shown that a connection of a fitting 31 to the movable furniture part 3, seen from a side view of a narrow side surface 27 of the furniture flap 3, can take place in a central area 28 viewed in the longitudinal direction. The connection of a fitting 26 can also be provided eccentrically on the furniture flap 3 ( Figure 4 ). In particular, the second drive unit is at the pivot point 29 ( Figure 3 ) or 30 ( Figure 4 ) arranged.

In the Figures 5 to 8 possible movements of the furniture flap 3 are shown. Intermediate positions or a start position of the furniture flap 3 are shown in dashed lines and an end position in each case with solid lines. In Figures 5 to 7 the fitting 26 is fastened off-center on the furniture flap 3. In Figure 8 the fitting 31 is mounted centrally on the furniture flap 3.

As in Figure 5 the second drive unit is shown, for example, to keep the furniture flap 3 in a vertical orientation during an opening movement. As a result of the eccentric fastening of the fitting 26 on the furniture flap 3, the furniture flap 3 is prevented from folding away.

When the furniture flap 3 is opened, the second drive unit can be provided, for example, to fold the furniture flap 3 upwards, so that a front-side opening 32 of the furniture body 2 is advantageously enlarged for a user, since the furniture flap 3 advantageously completely exposes the opening ( Figure 6 ). A similar effect can also be achieved if the second drive unit rotates the furniture flap 3 downwards in the opposite direction, so that when a lever arm of the fitting 26 on the furniture body 2 is fully open, the furniture flap 3 is positioned parallel to it ( Figure 7 ).

On to the sequence of movements Figure 7 A similar or advantageously identical sequence of movements can also be implemented with the central assembly of the fitting 31 on the furniture flap 3 ( Figure 8 ).

In Figure 9 it is shown that the furniture flap 3 for example by means of the second drive unit after completion of a Opening movement of the fitting 26 (furniture flap with solid lines) driven by the first drive unit can drive a rotary movement of the furniture flap 3 (furniture flap positions shown in dashed lines). In terms of time, the second drive unit can act simultaneously with the first drive unit ( Figure 5 - 8 ) or one after the other, as in Figure 9 shown.

Another variant of a fitting 33 is in the Figures 10 and 11 shown. The fitting 33, like the fittings shown above, is formed between the furniture body 2 and the furniture flap 3 and movably connects the two elements to one another. The fitting 33 comprises, on the one hand, a first drive unit in the form of an electric motor (not shown) and a gear mechanism in the form of a toothed belt 34, so that a movement of the first drive unit can be transmitted to the furniture flap 3, in particular independently of a movement of a lever arm of the fitting 33. For example, the toothed belt 34 can be provided to position the furniture flap 3 in a vertical orientation in an opening movement of the furniture flap 3 from a starting position relative to the furniture body 2 into an end position.

An embodiment of the invention according to the invention is shown in Figure 12 shown. A fitting variant 35 comprises a lever arm 36 which is adjustable or positionable in length. The length of the lever arm 36 can be changed, for example, by a drive unit (not shown). The drive unit advantageously shortens or extends the lever arm 36 during an opening movement of the fitting 35 or the furniture flap 3 relative to the furniture body 2.

The variants of the invention mentioned in the exemplary embodiments described above can advantageously be combined as desired. In particular, it is conceivable that a single drive unit a pivoting movement of the furniture flap 3 and a change in length of a lever arm drives simultaneously or one after the other.

List of reference symbols

1, 19th

Furniture

2

Furniture body

3

Furniture flap

4th

Body base

5

Body side wall

6th

Body side wall

7th

Body lid

8, 9

fitting

10, 11

Lever arm

12-14

Electric motor

15-18

end

20, 21

fitting

22nd

Electric motor

23

Synchronous rod

24

Furniture carcass interior

25th

Electric motor

26th

fitting

27

Side face

28

Area

29, 30

Pivot point

31

fitting

32

opening

33

fitting

34

Timing belt

35

fitting

36

Lever arm

37

Control unit

Claims (7)

1. Device (35) for moving a movable part of an item of furniture (3), in particular a door or a flap, wherein the device comprises guiding means (36), wherein the guiding means (36) are configured as a furniture hinge or as a furniture flap fitting, wherein the guiding means (36) in the assembled state movably connect the movable part of the item of furniture (3) to a furniture carcass (2) of an item of furniture (1), wherein the device (35) comprises a drive device which has an electric drive unit and a control unit (37), wherein the drive device drives parts of the guiding means (36) in such a manner that different spatial movement paths of the movable part of the item of furniture (3) are able to be implemented in an opening procedure, from a closed starting position on the furniture carcass (2) to an opened position on the furniture carcass (2) or vice-versa, wherein a lever arm (36) is provided for disposal between the furniture carcass (2) and the movable part of the item of furniture (3), wherein the movable part of the item of furniture (3) by means of a movement element of the device (35) is able to be pivotably disposed on the lever arm, wherein the movement element, independently of a movement of the lever arm, by way of gear means is able to be driven by way of the drive device, wherein the lever arm (36) is configured so as to be of variable length, wherein at least one further drive unit is provided for moving the movable part of the item of furniture (3), wherein a first drive unit is configured for varying the length of the lever arm (36), characterized in that a second drive unit is present at an articulation point of the guiding means on the movable part of the item of furniture, wherein the second drive unit drives the movement element by way of the gear means, wherein the second drive unit has an electric motor.
2. Device (35) for moving a movable part of an item of furniture (3) according to the preceding Claim 1, characterized in that the movable part of the item of furniture (3) and/or a part of the device and/or a guiding means (36), independently of the first drive unit, is movable by way of the second drive unit.
3. Device (35) for moving a movable part of an item of furniture (3) according to one of the preceding claims, characterized in that movements of the drive units can be freely established by the control unit (37).
4. Device (35) for moving a movable part of an item of furniture (3) according to one of the preceding claims, characterized in that the drive device is designed in such a manner that a movement of the movable part of the item of furniture (3) and/or of a part of the device by way of the second drive unit (13, 25) takes place during an opening procedure of the movable part of the item of furniture (3) relative to the furniture carcass (2).
5. Device (35) for moving a movable part of an item of furniture (3) according to one of the preceding claims, characterized in that the drive device is designed in such a manner that a movement of the movable part of the item of furniture (3) and/or of a part of the device by way of the second drive unit takes place upon completion of an opening procedure of the movable part of the item of furniture (3) relative to the furniture carcass (2) by way of the first drive unit.
6. Device (35) for moving a movable part of an item of furniture (3) according to one of the preceding claims, characterized in that the drive device is designed in such a manner that an opening movement of the movable part of the item of furniture (3) relative to the furniture carcass (2) first takes place exclusively by way of the first drive unit, and the second drive unit is activated independently of the drive of the first drive unit in the temporal course of the opening movement, wherein the second drive unit drives a movement of the movable part of the item of furniture (3) and/or of a part of the device.
7. Item of furniture (1) having a device (35) for moving a movable part of an item of furniture (3) according to one of the preceding claims.

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