EP2153003B1 - Piece of furniture with an ejector for a movable furniture element - Google Patents

Description

The invention relates to a piece of furniture according to the preamble of claim 1.

A piece of furniture with an ejection device of known type shows the DE 20 2004 007168 U1 , The DE 203 08 218 U1 shows a closing and damping device for movable furniture parts. The DE 20 2005 020 872 U1 also shows a damper for movable furniture parts.

Electromotive ejection devices for revolving doors on furniture are thus known per se. However, the known solutions are not very suitable for practical use, since they require a relatively large amount of space and greatly affect the appearance of the furniture to which they are mounted.

The solution to this problem is a first object of the invention.

The invention solves this problem by the subject matter of claim 1.

A development of the subject matter is specified in claim 23. Such a damping function, which dampens the closing movement of the movable furniture part, integrated in a simple manner in the ejection device. Advantageous embodiments of the invention can be found in the dependent claims.

The ejection device according to the invention builds so flat that it is suitable to be mounted in a furniture wall.

Although it is from the EP 1 598 509 A1 or the DE 10 2004 012 496 A1 known to integrate an ejection device for furniture with a spring drive in a furniture wall. The integration of an ejection device together with an electromechanical drive, however, has not been considered.

Fig. 1

eine perspektivische Ansicht eines Möbelkorpus ohne Tür und mit einer ohne Flächenelemente dargestellten Bodenwand, die mit einer Ausstoßvorrichtung versehen ist;

Fig. 2

eine perspektivische Ansicht der Ausstoßvorrichtung aus Fig. 1;

Fig. 3

eine perspektivische Ansicht einer ohne Flächenelemente dargestellten Möbelbodenwand mit der Ausstoßvorrichtung aus Fig. 1 und 2 mit Montageplatine in einem Lichtboden;

Fig. 4

eine Ansicht des Möbelkorpus ohne unteres Flächenelement von unten mit der Ausstoßvorrichtung aus Fig. 1 bis 3 in leicht geöffneter Stellung ohne Montageplatine;

Fig. 5

eine Ausschnittsvergrößerung aus Fig. 4;

Fig. 6

die Anordnung aus Fig. 5 in weiter geöffneter Stellung;

Fig. 7

eine Draufsicht auf eine zweite Ausstoßvorrichtung ohne die obere Montageplatine; und

Fig. 8

eine Ansicht einer weiteren Ausstoßvorrichtung ohne Montageplatine;

Fig. 9 -11

schematische Darstellungen von Varianten von Aktuatorelementen für die Ausstoßvorrichtungen aus Fig. 1 bis 8;

Fig. 12

eine perspektivische Ansicht einer weiteren Ausstoßvorrichtung; und

Fig. 13 -17

einen Abschnitt einer Ausstoßvorrichtung mit einer integrierten Dämpfungseinrichtung bzw. -funktion in aufeinander folgenden Schritten beim Öffnen und Schließen eines beweglichen Möbelteils.

The invention will be described in more detail below with reference to the drawing with reference to exemplary embodiments. It shows:

Fig. 1

a perspective view of a furniture body without door and with a bottom surface shown without surface elements, which is provided with an ejection device;

Fig. 2

a perspective view of the ejection device Fig. 1 ;

Fig. 3

a perspective view of an illustrated without surface elements furniture floor wall with the ejection device Fig. 1 and 2 with mounting board in a light floor;

Fig. 4

a view of the furniture body without lower surface element from below with the ejection device Fig. 1 to 3 in slightly open position without mounting plate;

Fig. 5

an excerpt from Fig. 4 ;

Fig. 6

the arrangement Fig. 5 in a further open position;

Fig. 7

a plan view of a second ejection device without the upper mounting board; and

Fig. 8

a view of another ejector without mounting board;

Fig. 9-11

schematic representations of variants of actuator elements for the ejection devices from Fig. 1 to 8 ;

Fig. 12

a perspective view of another ejection device; and

Fig. 13 -17

a portion of an ejection device with an integrated damping device in successive steps in opening and closing a movable furniture part.

Fig. 1 shows a perspective view of an exemplary box-shaped furniture body 1 with a plurality of walls, which here exemplify a serving as a bottom bottom wall 2, a top or top wall 3, two side walls 4, 5 and a rear wall 6 include.

The walls 2 - 6 are preferably aligned at right angles to each other, wherein the bottom wall 2 and the top wall 3 are usually horizontal and the side walls 3, 4 and the rear wall 6 are vertically aligned.

The thus open to one side furniture body with a movable furniture part, a revolving door 7, the in Fig. 4 lockable on at least one or more single or multi-axis hinge (s) 8 (in Fig. 4 partially visible) about a - usually vertically aligned - fixed or in space moving (in any case theoretically existing) pivot axis D pivoted and can be opened and closed.

The hinges 8 can be formed almost arbitrarily. Hinges are preferably used, which are designed to be damped and preferably dampen the movement of the door 7 toward the closed and / or maximum open position, in particular from an opening angle position of 40 ° to 50 °.

In order to move the door 7 from its closed position (not shown here) to an open position, an ejection device 9 is arranged on the furniture body 1, which has a drive section with a housing 10 and an actuator element movable relative to the housing 10. The actuator element, here a plunger 11, is designed to move the movable furniture part when moving from a first to a second position, i. Here, the door 7 to push or push, whereby the door 7 is pivoted about the rotation axis D from the closed position to an opening position or position.

The ejector 1 - see in particular with regard to their exemplary structure Fig. 2 and 5 - Is preferably advantageous designed such that their Thickness or height h is not greater than the thickness of the receiving wall, in Fig. 1 as the thickness d of the bottom wall 2.

Thus, it is possible to realize in the vertical direction a height h of less than 20 mm, for example a height h of 19 mm, so that the ejection device 1 can be integrated directly into a corresponding recess of a correspondingly designed or dimensioned bottom wall 2.

For this purpose, it is advantageous if the bottom wall 2 used is a wall element with a preferably circumferential mounting frame 19 made up of several individually mountable single profile elements, which is designed to have at least one or preferably one lower and one upper transparent or non-transparent disc-shaped cover plate, e.g. made of wood, glass, plastic and / or metal (not visible here), wherein between these cover plates a flat receiving space is formed, in which the ejection device 9 can be used and in which it can be mounted. In / At the receiving space between the cover plates (often called honeycomb plate) and lighting elements for illuminating the furniture interior and / or outer space can be provided.

In a corresponding not completely transparent design of the cover plates, the ejection device is not or not appreciably visible from the outside. The mounting frame 19 (see Fig. 1 and 3 ) has on its side facing the door on a bore or punching 12, which passes through the free end of the actuator element, here the plunger 11, at least in the open position.

The ejection device 11 can be mounted on the inner circumference of the circumferential mounting frame 19 in any desired manner, so with screws, for example, to mounting screws 29 (embodiment of the Fig. 8 ) or by means of a locking device (not shown here).

Such an ejection device 1 is realized, which is integrated directly into the bottom wall and thus the view of the furniture neither in the open nor in the closed Condition impaired because of her essentially only one acting on the door end portion of the plunger 11 and possibly a portion of a separate sensor element can be seen.

Preferably, the ejection device responds to tension or pressure on the furniture door, so that it is possible to activate it by gently pulling on the door 7 or tapping the door 7 from the outside.

To realize this functionality, a sensor element 20 is used, which is mounted on the furniture so that with him a slight pressure on the outside of the door is sensed, as it is generated for example by tapping the door.

It is expedient to use the signal emitted by the sensor element 20 when the pressure is applied as a control signal which, for example, is fed to a control device integrated in the ejection device 1, which activates the ejection device when a certain threshold value is exceeded, so that the plunger 11 extends and opens the door.

The sensor element 20 can project, for example, with an end region also through a bore 21 of the mounting frame 19 in the direction of the door 7. At the door 7, a correspondingly sensible element can be arranged (not shown here).

Suitably, the use of an electrical / electronic, e.g. capacitive, designed sensor device which is adapted to sense the movement of the door (or a sensible element attached to the door) relative to a sensor element on the furniture body.

A simple tap of the door then suffices to activate the ejector so that the door opens. This makes it possible to create a handle-less revolving door furniture, for example, for the kitchen area.

The Fig. 1 to 6 show a first ejector.

The housing 10 of this ejection device has two lateral - here in cross-section T-shaped - profiles 22, 23, the base legs on both sides support areas for two mutually spaced mounting plates or boards 24, 25 form, between which in particular the actual drive elements of the ejector are mounted , Such mounting boards are also in the embodiments of the Fig. 7 and 8th used, where instead of the profiles 22, 23 and other spacers for the mounting boards 24, 25 are used

On the profiles 22, 23 holes 26 for attaching fasteners or for mounting on the furniture body, in particular on the mounting frame 19 of the ejection device receiving furniture wall 2 can be formed.

The housing 10 of the drive device is preferably flush with the mounting frame 19.

The mounting boards 24, 25 are used in particular for mounting the actual drive elements of the drive device, which also protect them from damage to the outside.

The drive device has an electromechanical drive unit.

To the drive elements of the drive device here include a compact or small-sized electric motor 13 (see also the embodiments of Fig. 7 and 8th ), which acts via a drive worm 14 with a preferably non-self-locking pitch on its output shaft to a transmission, here a multi-stage gear transmission 15. This has a plurality of gear ratios 15a, 15b, 15c, which are each formed of intermeshing gear arrangements, of which the last gear 16 has on its outer circumference a segment toothing and on a radius R to the axis of rotation of the segment gear 16 an axially extending pin 17, which in a preferably parallel to the closed door or perpendicular to the main direction of extension of the plunger 11 in the closed state of the door extending gate 18 engages, which is connected to the plunger 11.

If the segment gear 16 is rotated as a result of rotations of the electric motor 11, the pin 17 rotates on its radius on the segment gear 16 with. As a result, he takes with the backdrop 18, wherein the pin 17 also moves in the gate 18 so that with the gate 18 of the door 7 attacking or fixed plunger 11 is moved linearly so that it in the one direction of rotation of the segment gear 16 the door 7 pushes open.

In this way, the plunger 11 can be retracted and extended, which when extending the door 7 (see Fig. 4 and 6 ). The closing of the door 7 is preferably carried out manually, ie, the plunger is retracted eg after opening the door 7 again. It is also conceivable, however, that closing the door 7 via a correspondingly dimensioned drive device also make an electric motor and pull the door again with the plunger, but then set accordingly to the door 7. Can be supported, the closing of the door 7 by a further closing device, so from acting at least over a certain angle of rotation closing spring in the hinge 8 (not shown in detail here)

The embodiment of Fig. 7 is different from that of Fig. 1 to 6 in that instead of a linearly movable plunger as actuator element for bellowing the door arranged on the segment gear 16 - here radially from the segment gear 16 outwardly projecting lever member 27 (here at the free end with a roller 28) is used - from a pivoted position by a corresponding opening in the mounting frame 19 (the latter in this figure, not shown) is first pivotable against the door 7, whereupon it presses on further rotation of the segment gear 16 from the inside against the door 7 and this opens. This ejector 1 builds flat. But it requires a slightly larger opening in the mounting frame 19 so that the rotary lever member 17 can be pivoted accordingly.

In the closed state, the actuator element is preferably moved in such a pivoted or retracted position that it does not abut the closed door 7.

Not shown in the figures is the control device for controlling the ejection device 1, which is preferably provided with a microprocessor and which can also be accommodated between the mounting boards 24, 25.

It is conceivable to design the control device remotely controllable. It is also conceivable to interpret them to a certain extent as "self-learning" and "self-diagnosing", so that they can be attached to furniture, e.g. itself detects the position of the abutment of the actuator element, the swing-over pivot angle on the door, etc., and detects and indicates disturbances to a certain extent, e.g. visually on a LED "fault" (not shown here).

Fig. 7 shows a variant in which a sensor device 48 is integrated with the housing 10, wherein an extendable sensor element 49 (or a sensor tip) whose travel is sensed, from the housing 10 in the direction of the door is moved back and forth , which offers the advantage that easily the back and the returning movement can be distinguished and that easily an initialization eg after a power failure is possible. The sensor can also be arranged outside the housing 10 close to this or - after Fig. 1 - Close to the opposite side facing away from the hinge side of the door, since a particularly accurate sensing of the opening angle can be realized in any case over a first smaller angular range.

It is of course also possible to arrange the ejection device in or on one of the side walls 4, 5 or in the top wall 3. The complete integrability or complete integration of the ejection device a suitably sized furniture wall has the advantage that the ejection device for each appropriately dimensioned furniture wall possibly not visible or almost invisible except for small openings for the actuator element and a sensor from the outside.

The power supply ideally takes place via a power supply unit on the furniture, which is e.g. also in one of the walls 2 to 6 of the furniture can be integrated.

With regard to the control, various variants are possible, it makes sense, for example, in the opening and closing direction, the actuator element, ie the rotary lever or the plunger 11 to move at different speeds.

In particular, on the segment gear 16, two sensors or switches 30 limiting the angle of rotation may be arranged, which limit the movement in the opening and / or closing direction. It is advantageous to provide an adjustability of the sensors or switches 30 in order to be able to set the path over which the actuator element can be extended or the segment gear wheel can be rotated (see also FIG Fig. 7 , after which the sensor position can be detected) ..

If hinges 8 are used which have a self-retraction device with a self-closing spring, which acts over a certain angle of rotation, it makes sense if the ejection device acts over a rotation angle which is greater than the angle of rotation over which the self-closing spring acts (self-closing angle, typically 35 ° up to 45 °!). In addition, the drive must of course be dimensioned more powerful than the spring of the hinge with the Selbsteinzugsvorrichtung.

It is also conceivable to monitor the rotation path in other ways, such as current / voltage characteristics or monitoring the speed, which is in relation to the opening path.

The use of a non-self-locking gear 15 (in particular also a drive screw 14 with non-self-locking pitch) has the advantage that it is possible in a simple manner to close the door manually against the action of the ejector, if desired.

Both the ejector of the Fig. 1 to 6 as well as the Fig. 7 are designed so that they are used in both left and right hinged doors 7, ie, they are by means of a rotation through 180 ° such that the upper and lower mounting plate is rotated from "top" to "down" in Both installation situations used, which simplifies the planning of the furniture maker. Thus, an independent invention is realized, according to which the ejection device 1 is implemented in an asymmetrical configuration (realized here by the plunger 11 arranged asymmetrically on the housing 10) by means of a rotation through 180 ° both on the left and on the right hinged doors.

The ejection device 1 is preferably mounted on the side facing the at least one hinge 8 side of the door, so that the plunger acts close to the axis of rotation, where with little travel on the actuator a large angle of rotation of the door movement is swept by the actuator.

It is conceivable to optionally provide the ejection device 1 with a damping device, which is particularly useful in retrofitting to doors, which are provided with non-damped hinges.

It is also useful, if necessary, to install a trigger button on the housing 10 or furniture body, which can be actuated manually and is provided, for example, in the region of the glass plates.

The variants of Fig. 7 are designed such that they can be integrated into a furniture wall (dimensions eg thickness 19 mm * width 70 mm * length 165 mm), which offers particular advantages, in particular with regard to the appearance. But it is also conceivable to open it up to put on a furniture wall or to sink them only partially in a furniture wall, if installation is not desired or a retrofitting of a piece of furniture to take place. For this purpose, the above devices own, but especially the Fig. 12 , which have a structure in the manner of Fig. 7 However, wherein the housing 10 consists of two half-shells, which essentially - except for an opening for the actuator element and possibly one for the sensor - close.

So the housing can also be sorted by Fig. 12 have a T-shape, for example, because the engine is slightly wider than the transmission. Nevertheless, the basic suitability, theoretically also in a recess of a furniture wall completely (except for the actuator element) or - less preferred - partially - to be used obtained.

Fig. 12 shows a perspective view of another ejection device.

The Fig. 9 to 11 show variants of the configuration of the actuator, shown in particular on the example of the linearly movable plunger eleventh

Thereafter, according to a further invention, the actuator element, in particular the plunger 11 (or each of the rotary lever), designed such that at least its free end of the rotational movement of the door can follow a curved path and / or it is a friction of the actuator on the door 7 reducing action taken on the actuator and / or on the door 7.

So it makes sense to design the actuator element, in particular the plunger 11 such that at least its free end of the rotational movement of the door can follow.

For this purpose, it makes sense to connect the plunger end 32 to the other plunger via at least one joint 31.

This can be designed for example as Einachsdrehgelenk ( Fig. 9b ), as Zweichachsdrehgelenk with two hinges 31 ( Fig. 9a ), as a ball joint ( Fig. 9a ) or otherwise.

Thus, a flat surface 33 on the plunger end 32 of the movement of the door 7 follow.

According to another variant, a rolling element such as a ball 34 or a roller 35 is arranged at the free end of the plunger 11, so that instead of sliding friction between the plunger 11 and the inner wall of the furniture door 7 occurs.

The ram end 32 can also be acted upon via an elastic portion 35 (FIG. Fig. 10a ) be connected to the rest of the plunger. It is also conceivable to manufacture a section 36 or the entire plunger from an elastomeric material ( Fig. 9f ).

The plunger end 32 can also be connected via a spring, in particular a helical spring, 37 to the plunger 11, which is pivotable about its articulation region on the plunger ( Fig. 11c ).

The ram end 32 can also be connected via a link chain 39, 40 to the plunger 11, which is pivotable about its articulation region on the plunger ( Fig. 11d, e ).

To Fig. 10b Rods 46 or ropes 47 are parallelogram-like hinged at the ram end to joints 31 to pivot this by moving the rods or ropes.

It is also conceivable to manufacture at least the free end of the plunger from a sliding bearing-like material and / or to design the plunger tip (for example, completely or partially rounded or approximated by beveling the corners of a rounding, see Fig. 11g ), that the friction to the inner wall of the door is again reduced.

One spring or a plurality of springs 41 on the joints 31- eg between the plunger end 32 and the rest of the plunger 11 - can / can be provided to zurückzuschwenken the free plunger end when closing the door to the pivot 31. A stop or a plurality of stops 42 may limit the rotational movement of the plunger end 32 ( Fig. 11a ). The measures stop and return spring 41, 42 can also be combined ( Fig. 11b, 11c ). The springs 41, can be configured as desired, as screws or leaf springs ( Fig. 10b . 11a - e ). Instead of a metal spring and an elastomeric element such as a ring 43 for the realization of the spring function is used ( Fig. 11d ).

Finally, it is conceivable to make the plunger 11 'not linearly extendable but to move it on an arcuate path, which can be realized, for example, with a toothed wheel 44 that is fixed to the internal toothing 45 of an arcuate, e.g. guided in a lane (not shown here) ram 11 'unrolls.

Fig. 13-17 show a portion of an ejection device 9 with an integrated damping device or function in successive steps when opening and closing a movable furniture part, which in turn is formed here as a door 7. The ejection device 9 is again preferably arranged on the furniture body, in particular - but not mandatory - in the manner of one of the preceding figures.

In order to move the door 7 from its closed position (not shown here) into an open position, the ejection device 9 is arranged on the furniture body, which preferably again has a drive section with a housing 10 and an actuator element 11 that is movable relative to the housing 10 movable, in particular displaceable plunger is formed.

In this case, the ejection device 9 has a damping device 50 for damping the movement of the movable furniture part.

Here, the damping device 50 is designed for damping a closing movement of the movable furniture part.

The actuator element is designed as a multi-part plunger 11, wherein the damping device 50 is associated with the plunger. It is integrated here in the ram 50.

For this purpose, the plunger 11 has a multi-part construction. The plunger 11 has two relatively movable plunger sections 51, 52, between which a damping means 53 is arranged. Here, the damping means 53 is a spring, for example, acting as a compression spring coil spring. However, the damping means may also be designed in other ways, for example as a fluid-damped piston arrangement (not shown here) and / or as a rotationally or linearly acting spring, air or hydraulic damper. Rotary dampers are particularly space-saving integrated into the ejection devices.

The plunger sections 51 and 52 are telescopically displaceable relative to each other, i. one plunger section 51 surrounds the other plunger section 52, the one plunger section 51 having a blind hole-like recess or opening 54 into which the further plunger section 52 is inserted. The spring 53 is disposed between the bottom of the opening 53 and the tappet portion 52.

The drive of the ejection device (not shown here) acts on the first, here outer plunger section 51.

The function of this arrangement is as follows.

When opening the movable furniture part, here the door 7, the plunger 11 acts on the door 7 and pushes them on ( Fig. 14 ). As soon as the door 7 releases from the plunger 11, the spring 53 of the inner plunger section 52, which was previously compressed in the closed state, pushes out of the plunger section 51 out of the opening 54 to the outside via the end of the plunger section 51 facing away from the housing (FIG. Fig. 15 ), which can have a complementary or accelerating opening. In this condition ( Fig. 15 ) the door 7 releases from the ram 11. Then the plunger 51 is retracted into its initial position in the housing ( Fig. 11 ). There may be provided an end stop for limiting the extension movement of the plunger 52 in the plunger 51 (not shown here). The design / coupling of the plungers 51 and 52 is here such that the plunger 52 does not exit completely from the recess 52 of the plunger 51.

If the door 7 is closed again ( Fig. 16 ), it first meets when closing on the advanced plunger section 52 and pushes it against the action of the spring 53 in the recess 54 back. Thus, the movement of the door 7 is damped. The main advantage comes from a quick closing, as the door does not swing back when hitting the body and thus reliably avoids another - fast - release. An additional damper is no longer necessary. The door will also hit the pusher quieter.

Upon further closing of the door 7 and the outer plunger section 51 is then retracted into the housing 10. The spring 53 is designed such that the closing force of the movable furniture part, which is caused for example by resilient door hinges, the spring 53 in the retracted position of Fig. 13 holds. It is advantageous that such the closing force of the movable furniture part is greater than an opening force of the spring 53 on the movable furniture part. 7

Such a simple way, a damping function when closing the movable furniture part, here the door realized without the appearance of the furniture and the ejector is impaired.

reference numeral

furniture body

1

bottom wall

2

top wall

3

side walls

4, 5

rear wall

6

revolving door

7

hinge

8th

axis of rotation

9

casing

10

tappet

11

drilling

12

electric motor

13

driven screw

14

gear transmission

15

segment gear

16

pen

17

scenery

18

mounting frame

19

sensor element

20

drilling

21

profiles

22, 23

Mounting plates or boards

24, 25

drilling

26

lever member

27

role

28

Mounting screw pieces

29

switch

30

joint

31

plunger end

32

area

33

Bullet

34

role

35

section

36

coil spring

37

section

38

articulated chain

39.40

feathers

41

attacks

42

ring

43

gear

44

internal gearing

45

Ropes / rods

46.47

sensor device

48

sensor element

49

attenuator

50

follower portions

51, 52

recess

53

damping means

54

Claims (27)

1. A piece of furniture, which has a furniture body (1) having multiple walls (2 through 6) and having a pusher device for a movable furniture part, in particular a rotatable door, of the furniture, which has an electromechanical drive unit such as an electric motor, characterized in that the pusher device is implemented so that, with the drive device, which has the electromechanical drive unit, it is integrated in one of the walls (2 through 6) of the furniture, and this wall has a sensor element (20), which is installed on the furniture so that a light pressure on the door outer side can be sensed using it.
2. The piece of furniture according to Claim 1, characterized in that the furniture body has a base wall (2), which is used as a base, an upper or cover wall (3), two side walls (4, 5), and a rear wall (6), the pusher device being installed in an installation space in one of the walls (2 through 6) of the furniture.
3. The piece of furniture according to Claim 2, characterized in that the furniture body, which is open toward at least one side, is closable by the door (7), which is movable around a rotational axis D on at least one or multiple single-axis or multi-axis hinge(s) (8), the hinges (8) preferably being implemented as damped hinges.
4. The piece of furniture according to Claim 3, characterized in that the hinges (8), as damped hinges, are equipped with a damping function toward the minimal and/or maximal opening angles of the door (7) and/or the hinges (8) have closing springs for closing the door over a predetermined rotational angle.
5. The piece of furniture according to one of the preceding claims, characterized in that the pusher device has a linearly movable tappet (11) or a lever element (27) as the actuator element for moving the door.
6. The piece of furniture according to one of the preceding claims, characterized in that the pusher device is implemented so that its thickness and/or height h is not greater than the thickness d of the wall (2 through 6) which receives it, the pusher device preferably having a thickness h of less than 25 mm, more preferably a thickness h of less than 20 mm, and particularly preferably a thickness h of less than 15 mm.
7. The piece of furniture according to one of the preceding claims, characterized in that the wall (2 through 6), in which the pusher device is installable, has at least one or preferably two cover plates, which are spaced apart from one another, and between which a receptacle space is implemented, in which the pusher device (9) is insertable, and/or the wall (2 through 6), in which the pusher device is installable, has a preferably peripheral installation frame (19) having at least one profile or having multiple individual profile elements which can be installed together.
8. The piece of furniture according to one of Claims 5 and 7, characterized in that the installation frame (19) preferably has a hole (12), which penetrates the free end of the actuator element, in particular the tappet (11) or the rotating lever, at least in the open position, and/or the installation frame (19) has a hole (21) for receiving a sensor element (20).
9. The piece of furniture according to one of the preceding claims, characterized in that the pusher device has a housing (10), having two installation plates or panels (24, 25) spaced apart from one another, between which drive elements of a drive device of the pusher device are installed, the housing (10) preferably having two lateral profiles (22, 23), which are T-shaped in cross-section, and whose base legs form support areas on both sides for the installation plates or panels (24, 25).
10. The piece of furniture according to Claim 9, characterized in that the drive elements installed between the installation cards (24, 25) comprise the electric motor (13) and a transmission (15).
11. The piece of furniture according to Claim 10, characterized in that the transmission (15) is implemented as a multistep gearwheel transmission (15), which has multiple transmission steps (15a,...), and which preferably has a segmented gearwheel (16), which in turn has an off-center pin (17), which is situated parallel to the rotational axis of the segmented gearwheel, and which engages in a link (18) which is connected to the actuator element.
12. The piece of furniture according to Claim 11, characterized in that a linearly movable tappet (11) is situated on the link (18) as the actuator element, and/or a lever element (27) is situated on the segmented gearwheel (16) as the actuator element.
13. The piece of furniture according to one of the preceding claims, characterized in that the transmission (15) is designed as non-self-locking, and/or preferably adjustable switches or sensors (31), which delimit the rotational path, are preferably situated on the segmented gearwheel (16), and delimit the movement in the opening and/or closing direction.
14. The piece of furniture according one of the preceding claims, characterized by an embodiment of the pusher device such that with an embodiment which is asymmetrical per se, via a rotation by 180°, it is usable on furniture having doors (7) stopping on the left and also on the right.
15. The piece of furniture according to one of the preceding claims, characterized by an embodiment of the pusher device such that it is situated on doors (7) closer to the side of the at least one hinge (8) of the door than to the side opposite to the hinges.
16. The piece of furniture according to Claim 5, characterized in that the actuator element, in particular the tappet (11), is implemented so that at least its free end can follow the rotational movement of the door on a curved path and/or in that a measure which reduces the friction of the actuator element on the door is taken on the actuator element and/or on the door (7).
17. The piece of furniture according to Claim 16, characterized in that the actuator element is implemented as articulated, in particular so that it has one or more pivot joint(s) (31).
18. The piece of furniture according to one of Claims 16 through 17, characterized in that the lever element (27) or the tappet (11) has a tappet end (32), which is implemented as movable relative to the remaining tappet, preferably so that the tappet end (32) is connected via at least one pivot joint to the remaining tappet (11) or the lever element (27).
19. The piece of furniture according to one of the preceding claims, characterized in that rods (46) or cables (47) are linked in a parallelogram on the tappet end (32) on joints (31), in order to pivot it by moving the rods or cables (46, 47) and/or a roller body such as a ball (34) or a roll (35) is situated on the free end of the tappet (11) or the lever element (27).
20. The piece of furniture according to one of the preceding claims, characterized by an elastic section (38), which acts as a pivot joint, or an elastic implementation of the tappet (11) and/or a spring, in particular a coiled spring (37), for attaching the tappet end (32).
21. The piece of furniture according to one of the preceding claims, characterized by a joint chain (39, 40) on the tappet (11) and/or by a material like a friction bearing on the free end of the tappet (11) and/or by one spring or multiple springs (41) on the joints (31).
22. The piece of furniture according to one of the preceding claims, characterized by one stop or multiple stops (42) on the joints (31), and/or in that the tappet (11) is implemented for the purpose of being moved on a curved path.
23. The piece of furniture according to one of the preceding claims, characterized by a damping unit (50), which is preferably implemented for the purpose of acting upon closing of the movable furniture part (7), in particular a door (7) and which is preferably associated with the tappet (11).
24. The piece of furniture according to Claim 23, characterized in that the tappet (11) is multipart, it having at least two tappet sections (51, 52) movable relative to one another, between which damping means (53) are situated.
25. The piece of furniture according to one of Claims 23 through 24, characterized in that the damping unit has one or more springs as the damping means (53) and/or the damping unit has a fluid-damped piston configuration and/or a linearly or a rotationally acting spring, pneumatic, or hydraulic damper as the damping means (53) and/or the tappet sections (51, 52) are displaceable in one another telescopically.
26. The piece of furniture according to Claim 25, characterized in that one tappet section (51) has a recess or opening (54) like a pocket hole, in which the further tappet section (52) is inserted, the damping means, in particular the spring, being situated between the base of the opening (53) and the inner tappet section (52).
27. The piece of furniture according to one of the preceding claims, characterized in that the closing force of the movable furniture part is greater than an opening force of the spring (53) on the movable furniture part.

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