EP2994021B1 - Slatted base with an electric motor drive - Google Patents

Description

The invention relates to a slatted frame with an electromotive furniture drive according to the preamble of claim 1.

Seating and / or reclining furniture have fixed and movable furniture components. Fixed furniture components are e.g. Frame components. Movable furniture components are e.g. firm or resilient support surfaces of an upholstery or mattress of the seating and / or reclining furniture.

The electromotive furniture drive is used to adjust the movable furniture components. The adjustment movement and drive force generated by the electromotive furniture drive is transmitted to the respective movable furniture component, the electromotive furniture drive being supported on a fixed furniture component and displacing the movable furniture component relative to the fixed furniture component. The electromotive furniture drive can also be attached between two movable furniture components, whereby it can be adjusted relative to one another.

A functional fitting couples the movable furniture components to the fixed furniture components and / or the movable furniture components to one another and is coupled to the electromotive furniture drive.

As an alternative to this, at least part of the functional fitting is to be seen as self-sufficient and as an independent system if a coupling member of the functional fitting is mechanically coupled to the output member of the electromotive furniture drive. The functional fitting can comprise a plurality of coupling links which are connected to one another. Such connections can be articulated. Other connections are fixed. Thus, the functional fitting can also be understood as a lever chain or lever link chain, which can also have hinges. Another coupling element of the functional fitting is mechanically coupled to a furniture component. The connection can be fixed. Alternatively, it is articulated. Other connections are movable or loose force pads.

Electromotive furniture drives and functional fittings are known from the prior art in a large number of different designs for different applications and purposes. Electromotive furniture drives are used, for example, as single drives, double and multiple drives.

Based on the state of the art for electromotive furniture drives, some are considered disadvantageous.

An electromotive furniture drive often blocks the accessibility of a storage space below the furniture component to be adjusted.

The documents DE 89 11 226 and DE 20 2008 016 980 very strikingly illustrate a high overall height and elements of the electromotive furniture drive and the functional fitting that protrude far below the base frame. A storage space, for example in the form of a drawer below the bed, can practically not be used.

Furthermore, adjustable headrests are rarely available, which is considered to be disadvantageous, since additional cushions often have to be used if they cannot be adjusted.

The furniture has a fixed width, whereby intermediate sizes can only be realized if the furniture and functional fittings are changed. As far as the functional fitting alone is concerned, the intermediate sizes in particular lead to additional logistical effort if intermediate dimensions are manufactured as custom-made items, e.g. are to be welded.

Parts of the functional fitting such as Levers can be far away from swiveling furniture components, which can create danger from crushing and shearing points and is also optically unsuitable.

In the case of variably usable individual drives that can be connected with struts for each application, special struts are always required. Only a variable variability with a high grid dimension can be used here. In addition, special profiles must be used, which leads to increased costs.

Some electromotive furniture drives have a very large height, which, for example, limits underbody clearance and can make storage (eg stacking of slatted frames) more difficult. In particular DE 89 11 226 illustrates this.

Furthermore, there are often complex couplings of the functional fitting to the output member of the drive train of the electromotive furniture drive to record that complicate assembly and repair during assembly and repair.

An object of the invention is to provide a slatted frame with a furniture drive of the type mentioned at the outset, which no longer has the disadvantages mentioned at the outset and which also offers additional advantages.

The task is solved by a slatted frame with furniture drive with the features of claim 1.

The slatted base according to the invention is designed with a functional fitting and can be used to adjust movable furniture components relative to one another into the silhouette or contour or / and a frame of the furniture to be assigned. This results in advantages of a low overall height and simple assembly and assembly.

The furniture drive of the slatted frame has at least one electric motor and a spindle lifting thread for adjusting support surfaces of an upholstery or a mattress of the furniture relative to one another and / or to fixed components of the furniture. The furniture drive is designed with a functional fitting and can be inserted into the silhouette or contour or / and a frame of the furniture to be assigned.

Here, parts of the functional fitting and / or parts of the furniture drive are designed as furniture components or at least in sections as furniture components. Furniture and / or functional fitting and / or furniture drive are assembled into one structural unit during manufacture, which enables particularly simple and cost-effective assembly.

In this case, a compact unit consisting of a furniture drive and functional fitting is formed as a functional system and is connected to the slatted frame on the inside of the frame, the compact unit consisting of a furniture drive and functional fitting having two drive units in which the screw jack threads are arranged. According to the invention, the compact unit comprising the furniture drive and functional fitting is inserted within the silhouette or contour of the frame with a lower boundary plane of the slatted frame and is connected to the slatted frame on the inside of the frame via the drive units.

Another embodiment provides that the spindle stroke thread for adjusting the back part and the spindle stroke thread for adjusting the leg part are designed as individual drives, wherein in each case a spindle stroke thread with the associated motor is arranged in a separate housing. This makes it possible, e.g. equip only the leg section or only the back section, or both with an adjustable drive.

In one embodiment, two spindle stroke threads are provided on the leg part and two spindle stroke threads on the rear part, with a spindle stroke drive for the head part / back part area and one spindle stroke drive for each side for the foot part area in the side area of the furniture. This results in an advantageous distribution of the drives on both sides of the furniture and an effective use of space.

In another embodiment, the housing of each spindle lifting thread can be provided with a connection which is designed as a spar receptacle for receiving a furniture component or a section of a furniture component for fastening to the furniture component. This is a simple and quick assembly and versatility in adapting to different dimensions, i.e. Lengths and widths of the furniture possible. At least one swivel lever can also be provided with a spar holder.

As an alternative or in addition, it is possible for the spar seat to be pivotably mounted on the housings of the spindle lifting thread, which results in advantageous versatility.

In a further embodiment, the beam holder can have two sections, one section being designed as a pivot lever or acting as a pivot lever, the other section of the beam holder being designed as a beam holder itself. This results in an advantageous simplification.

Furthermore, it may be possible for the housings of all the spindle lifting threads to form a spar member and for two spar receptacles to be pivotably arranged on each housing, which results in a further simplification.

In another embodiment, at least one electric motor is arranged in a motor unit of the furniture drive, the motor unit being provided with a slatted frame construction unit and with at least two spindle lifting threads is connected, wherein the motor unit extends within the frame from an inside of the frame to the other inside of the frame, and wherein one of the at least two screw jack threads is arranged on an inside of a longitudinal member of the frame and / or in a longitudinal member of the frame. In this way, a complete structural unit can be created that enables easy installation in furniture.

The at least one electric motor can have two drive shafts, which transmit rotary movements of the electric motor via a flexible shaft to a worm of a worm gear of a respective spindle lifting thread. A motor can thus advantageously be arranged in the middle of a frame, as a result of which a space under the frame can advantageously remain free.

If the electric motor of the motor unit is arranged in a tube or a tube which extends in the transverse direction of the slatted frame, and with a respective end of the tube being fixedly attached to a housing of the spindle lifting thread, an easy adjustment to the width is possible the frame or the furniture by simply cutting the tube to length.

In an alternative, the electric motor of the motor unit can be arranged in a tube or a tube which extends in the transverse direction of the slatted frame, and wherein a respective end of the tube and a respective long side of the slatted frame can be detachably attached to a housing of the spindle lifting thread, and wherein a respective end of the flexible shafts can be releasably connected to a worm of a worm gear of a respective spindle lifting thread. This enables an advantageously simple and quick attachment.

In one embodiment, the furniture drive has at least one output opening, into which a swivel lever can be inserted to interact with the output member. A C-shaped closure element is provided in a simple manner for closing the driven opening.

Another embodiment provides that a linear output member of the spindle stroke thread is indirectly operatively connected to the swivel lever by at least one coupling member. This allows a position of the Influence the pivot lever so that an advantageously low height of the furniture drive can be achieved.

It is further provided that the at least one coupling member is movably guided in a guide contour of a housing of the furniture drive between the output member and a pressure piece of the pivoting lever. This enables simple guidance of the at least one coupling element. The guide contour of the housing of the furniture drive can be formed in the housing as a channel-like recess or / and can be molded on as a raised portion. Combinations are of course also possible. The guide contour can thus advantageously be easily integrated into the housing.

The coupling links can be designed, for example, as balls or / and rollers. In one embodiment, the coupling links can also be connected to one another to form a chain, which enables simplified assembly.

A still further embodiment provides that two furniture drives, each with a housing and with an electric motor, are connected to one another by a connecting means. In this way, a number of drives can be easily connected to one another.

It is advantageous if the connecting means is a connecting element which is designed as a rigid profile and is inserted lengthways with one end into one of the two housings of the furniture drives and is firmly connected to them. So a stable connection is possible.

If the connecting element is formed from a cut-to-length, rigid profile, simple and versatile adaptations to different dimensions of the furniture can be carried out.

In yet another embodiment, the furniture drive has at least one output opening, into which a pivot shaft with a pivot lever can be inserted for interaction with the output element. A U-shaped closure element is provided for closing the driven opening by rotation. This makes it easy to close the output opening and secure the closure element.

In an alternative embodiment, the connecting means is designed as a multi-part, shell-shaped connecting unit. This enables simple assembly.

Here, the multi-part connection unit can comprise at least two shells which are provided with holding sections which can be brought into engagement with corresponding holding sections on the housings of the furniture drives. If the holding sections are designed in the manner of a toothing, for example T-slots and / or dovetail connections, not only easy assembly but also simple mounting and securing is possible.

In a further embodiment, it is provided that the at least two shells of the multi-part connecting unit are positively inserted from both long sides of the housing parallel to pivot axes onto the respective housing of the respective furniture drive, the holding sections of the shells with the corresponding holding sections of the respective housing in a form-fitting manner Stand by. This enables the connection unit to be attached simply and quickly. The connection unit can e.g. be made as a plastic injection molded part. However, metallic materials or / and combinations of different materials are also possible.

A further embodiment consists in that a linear output member of a spindle stroke thread interacts with a connecting rod, the connecting rod being articulated on the free end of a link lever in a pivot axis. In this way, a height of the housing can be positively influenced.

In addition, it is provided that the articulation lever has a pocket for coupling a pivot shaft of the functional fitting, a driver of the pivot shaft being designed to be coupled to the pocket. This results in an advantageously simple installation.

A still further embodiment provides that a link lever or the pivot lever is an integral part of the functional fitting and has a pivot axis which is fixedly but pivotably mounted in a recess as the output opening of the furniture drive, the free end of the pivot lever having a pressure piece which as a round body parallel to the axis is formed to the pivot axis. This enables an advantageous coupling of the functional fitting to the drive.

It is provided that a width of the pressure piece in the direction of the pivot axis is greater than a width of the pivot lever in the direction of the pivot axis, the pressure piece being guided in circular slots / pockets or pivoting contours of a housing of the furniture drive. In this way, stable guidance during power transmission of the drive can be guaranteed.

In one embodiment, an insertion contour opens into the guide contour from the output opening of the housing, a further closure element being provided for closing one end of the insertion contour before the introduction contour opens into the guide contour. This enables a continuous guide contour after installing the swivel lever.

Furthermore, it is provided that the closure element has a first form-fitting contour concentric to the pivot axis, engages around a pivot shaft inserted in the assembly position in the closed state of the output opening, and is rotated about the pivot shaft used to secure the pivot shaft in a fixed manner, thereby enabling simple and effective locking of the pivot shaft leaves.

For this purpose, the housing of the furniture drive has a second form-locking contour in the area of the driven opening, which also runs concentrically to the pivot axis when the pivot shaft on the furniture drive is in the assembly position, the first and the second form-fitting contour interlocking after the locking element has been rotated. The locking of the closure element is thus simplified.

Another embodiment provides that the furniture drive has an electric motor which interacts with at least two spindle lifting threads via a gear wheel for adjusting several furniture components. A motor can thus advantageously be used for two or more adjustment functions.

Here, the at least two spindle stroke threads each have a threaded spindle with the opposite direction of pitch, the threaded spindles and the gear wheel having a common axis of rotation. Different directions of movement are thus possible in a simple manner.

It is also provided that a nut is applied to the threads of each threaded spindle, each nut being non-rotatable but displaceable in length and guided in the housing of the furniture drive, each nut being connected directly or via intermediate links to an adjusting lever or swivel lever, which is coupled to the associated furniture component and / or to a furniture component to be adjusted.

It is further provided that a head or back part nut is connected to the furniture component for adjusting the back part, and that a leg part nut is connected to the furniture component of the leg part and / or the foot part. The back part and the leg part and / or the foot part are effectively connected to the drive. Here, the back part nut acts directly on the back part of the piece of furniture, and the leg part nut acts on the leg part of the piece of furniture via an intermediate member. The operative connections are thus provided in a simple manner.

For this purpose, at least one coupling slide is also provided, which is arranged so as to be displaceably mounted between the back part nut and the intermediate member. This results in an advantageous further coupling option for the individual adjustment of the associated furniture parts.

In this case, guide means such as webs or recesses for displaceably guiding the at least one coupling slide are provided in order to enable easy adjustment.

The coupling slide can be made in one part or in several parts. Different materials are also possible.

In a further embodiment, the functional fitting has two drive units in which the spindle lifting threads are arranged, an assembly unit for attaching a frame or slatted frame being attached to the outer sides of the drive units. This compact and simple construction enables easy installation.

A further embodiment provides that the assembly unit forms an integral molded part with the housing of the drive unit, the overall height of the respective assembly unit being less than the overall height of the respective one Drive unit. An advantageously low overall installation height can thus be achieved.

In yet another embodiment, the furniture drive is designed as a two-motor furniture drive in a housing with swivel shafts, the swivel shafts extending transversely to a longitudinal axis of the two-motor furniture drive and comprising a polygonal tube on the outside. This creates an advantageous structural unit, which is simple, e.g. can be adapted to different widths of a frame or piece of furniture by cutting the swivel shafts to length.

In another embodiment, a respective output member of the furniture drive is pivotally mounted to the housing and has an inner profile which is positively and non-rotatably connected to the outside profile of the swivel shaft or the polygonal tube, with a bearing of the swivel shaft or the polygonal tube formed by end shields which are rotatably mounted on the respective free end of the pivot shaft or the polygonal tube, and wherein the end shields themselves can be connected to the frame of the furniture or the slatted frame. This enables simple assembly, and assembly is made easier.

• Es ist eine flache Bauweise des Möbelantriebs realisiert.
• Über die untere Begrenzungsebene des Möbels stehen keine Teile des Möbelantriebs und des Funktionsbeschlages hervor, so kann das Möbel direkt auf den Fußboden oder in ein Bettgestell mit einer flächig geschlossenen Unterkonstruktion gestellt werden. Es kann eine Bettkastenschublade verwendet werden.
• Eine Nackenstütze ist im Bewegungsablauf separat und/oder voreilend betreibbar.
• Der Funktionsbeschlag und/oder der Möbelantrieb sind so konzipiert, dass jede beliebige Breite und jede beliebige Länge des Möbels / des Lattenrostes / des Bettes realisiert werden können.
• Der Funktionsbeschlag und/oder der Möbelantrieb sind so konzipiert, dass der Funktionsbeschlag mit wenigen Mitteln in einen Funktionsbeschlag mit fixer Weite bzw. Breite verändert werden kann.
• Eine Anzahl Möbelantriebe können zu einer Einheit miteinander verbunden werden.
• Der Möbelantrieb ist im Möbel / im Funktionsbeschlag leicht montierbar, d.h. leicht und einfach, ein- und ausbaubar, ausgebildet.
• Der Möbelantrieb und der Funktionsbeschlag sind derart konzipiert, dass das Möbel nach erfolgter Montage leicht stapelbar ausgebildet ist.
• Möbelantrieb und Funktionsbeschlag sind leicht montierbar und robust in der Ausführung.

The invention thus offers the following special advantages:

• A flat design of the furniture drive is realized.
• No parts of the furniture drive and the functional fitting protrude beyond the lower boundary level of the furniture, so the furniture can be placed directly on the floor or in a bed frame with a flat, closed substructure. A bed drawer can be used.
• A neck support can be operated separately and / or in advance during the movement.
• The functional fitting and / or the furniture drive are designed so that any width and length of furniture / slatted frame / bed can be realized.
• The functional fitting and / or the furniture drive are designed so that the functional fitting can be changed into a functional fitting with a fixed width or width with few means.
• A number of furniture drives can be connected to one another.
• The furniture drive is easy to assemble in the furniture / functional fitting, that is to say it is light and simple, can be installed and removed.
• The furniture drive and the functional fitting are designed in such a way that the furniture is easily stackable after assembly.
• Furniture drive and functional fitting are easy to assemble and robust in design.

Figur 1

eine schematische Perspektivansicht eines ersten Beispiels eines Möbels in Form eines Bettes mit einem ersten Beispiel eines Funktionsbeschlags und einem elektromotorischen Möbelantrieb in Form eines Doppelantriebs;

Figur 2

eine Seitenansicht eines zweiten Beispiels eines Möbels in Form eines Lattenrostes mit Rahmen;

Figur 3

eine Seitenansicht einer Variante des zweiten Beispiels nach Figur 2;

Figur 4

eine Seitenansicht eines Lattenrosts mit einem elektromotorischen Möbelantrieb;

Figur 5

eine Variante nach dem Beispiel nach Figur 4;

Figur 6-7

Schnittansichten eines Lattenrostes mit einem elektromotorischen Möbelantrieb;

Figur 8

einen Möbelantrieb eines vierten Beispiels in Seitenansicht;

Figur 9-10

eine Variante des vierten Beispiels des Möbelantriebs nach Figur 8 in zwei Endstellungen;

Figur 11

zwei Möbelantriebe in Seitenansicht eines fünften Beispiels;

Figur 12

zwei Möbelantriebe in Perspektivansicht eines sechsten Beispiels;

Figur 13

ein weiteres Beispiel eines Funktionsbeschlags nach dem dritten Beispiel des elektromotorischen Möbelantriebs nach Figur 6 und 7;

Figur 14

ein weiteres Beispiel eines Funktionsbeschlags nach dem sechsten Beispiel des elektromotorischen Möbelantriebs nach Figur 12;

Figur 15-16

einen Möbelantrieb nach einem siebenten Beispiel in Schnittdarstellung von der Seite in zwei Endstellungen;

Figuren 17-19

einen Möbelantrieb nach einem achten Beispiel in verschiedenen Schnittdarstellungen und Ansichten; und

Figur 20

einen Möbelantrieb nach einem neunten Beispiel.

The invention is explained in more detail with reference to the accompanying drawings. Show it:

Figure 1

a schematic perspective view of a first example of a piece of furniture in the form of a bed with a first example of a functional fitting and an electromotive furniture drive in the form of a double drive;

Figure 2

a side view of a second example of furniture in the form of a slatted frame with frame;

Figure 3

a side view of a variant of the second example Figure 2 ;

Figure 4

a side view of a slatted frame with an electromotive furniture drive;

Figure 5

a variant according to the example Figure 4 ;

Figure 6-7

Sectional views of a slatted frame with an electromotive furniture drive;

Figure 8

a furniture drive of a fourth example in side view;

Figure 9-10

a variant of the fourth example of the furniture drive according to Figure 8 in two end positions;

Figure 11

two furniture drives in side view of a fifth example;

Figure 12

two furniture drives in perspective view of a sixth example;

Figure 13

a further example of a functional fitting according to the third example of the electromotive furniture drive according to Figure 6 and 7 ;

Figure 14

another example of a functional fitting according to the sixth example of the electromotive furniture drive according to Figure 12 ;

Figure 15-16

a furniture drive according to a seventh example in a sectional view from the side in two end positions;

Figures 17-19

a furniture drive according to an eighth example in different sectional views and views; and

Figure 20

a furniture drive according to a ninth example.

Figure 1 shows a schematic perspective view of a first example of a piece of furniture 1 in the form of a bed with a first example of a functional fitting 4 and an electromotive furniture drive 3 in the form of a double drive.

The piece of furniture 1 is designed as a slatted frame 2 or as a bed, and in this example comprises a seat part 2a, a back part 2b, a leg or foot part 2c and a neck support 2d, which form the support surfaces of a mattress or the support surfaces of an upholstery form. These support surfaces are adjustable in such a way that the back part 2b about a back part axis 2f (see Fig. 2 ) and the leg or foot part 2c about a leg part axis 2g (see Fig. 2 ) are pivotable and can take up different positions. Figure 1 shows these support surfaces in an adjusted position, which can be referred to as a reading position, for example.

Furthermore, the furniture 1 has a functional fitting 4 and / or the electromotive furniture drive 3, the functional fitting 4 and / or the furniture drive 3 being inserted into the silhouette or contour of the furniture 1 in an inventive manner. A design according to the following description of the figures can be used as a functional fitting.

A manual remote control for operating the furniture 1 is provided, which in this embodiment e.g. is wirelessly designed as a radio remote control. The handheld remote control and an associated radio receiver and a controller with a power supply are not shown here. Alternatively, a smartphone is designed as a handheld remote control and is connected to the receiver via Bluetooth.

According to another form, not shown in detail, the handheld remote control can also be designed as a cable handset. The cable hand switch can be connected to an associated control. Alternatively, the switch contacts of the push buttons of the cable hand switch are provided for directly switching the motor current of one or more motors of the furniture drive 3. In any case, however, a motor is provided which can be operated with a low voltage, for example a protective low voltage of less than 30V.

The functional fitting 4 is attached to the electromotive furniture drive 3 in a frame 5. As an electromotive furniture drive 3, an embodiment according to the following description of the figures is possible.

The example of a piece of furniture according to Figure 1 can be equipped with any of the versions of an electromotive furniture drive 3 or a functional fitting 4, as will be described in more detail in the following figures.

Stand-up feet are not shown. These can be used if the basic framework of the example of the Figure 1 is somewhat more solid, so that a bed is formed.

The Figure 2 shows a side view of a further example, wherein the electromotive furniture drive 3 with a drive unit of the slatted frame 2 has a screw thread 6, 6 "for generating a linear adjusting force.

The linear adjusting force acts on two pivot levers 7, 7 ', which have a common pivot point in the back part axis 2f, but are offset from one another at an angle about this back part axis 2f, so that when actuated, the first pivot lever 7 and then the second Swivel lever 7 'is moved by an output member 8 of the screw thread 6. The first pivot lever 7 is connected to a coupling member 4a, for example a rod or a rod, the connection point of the Coupling member 4a is arranged on the pivot lever 7 at a distance from the pivot center about the back part axis 2f, which eccentrically transmits its adjustment movement to a hinge 2e of the neck support 2d, so that the neck support 2d is thereby pivoted about a pivot axis of the hinge 2e. Since the first pivot lever 7 is moved first, the neck support 2d comes from the basic position of the slatted frame 2 and is actuated first. Only after a predetermined linear adjustment path of the spindle lifting thread 6 is the back part 2b further pivoted together with the neck support 2d about the back part axis 2f.

It should also be mentioned that each pivot lever 7, 7 'has a first end region with a pivot point about the back part axis 2f, about which it is pivotably mounted, and a second end region designed as a free end, which is connected to the associated output member 8 of the spindle lifting thread 6 is in operative connection.

Thus, the back part 2b and the rod 4a with the neck support 2d articulated thereon are moved in succession by a common output member 8 of the spindle lifting thread 6, because there is a greater distance between the contact points of the pivot lever 7 'and the output member of the spindle lifting thread 6 coming from the lowered basic position of the neck support 2d , while the distance between the contact points of the pivot lever 7 and the output member 8 of the screw jack 6 is only small. As an alternative to the angular misalignment of the swivel levers 7, 7 'mentioned at the outset, a stepped misalignment of the contact surface of the output member 8 of the spindle lifting thread 6 with the respective swivel lever 7, 7' can also be provided, so that two contact surfaces arranged in staggered relation to one another for contacting the respective swivel lever 7, 7 'are provided.

Another spindle stroke thread 6 ″ is provided with an associated further output element 8 ″, the further output element 8 ″ interacting with a further pivot lever 7 ″ for adjusting the leg part 2c.

Each spindle stroke thread 6, 6 "is moved by an electric motor. Alternatively, two spindle stroke threads 6, 6" are coupled to one another and can be moved together by an electric motor. In any case, however, the movement of the screw jack threads 6, 6 "takes place as a rotating movement coming from an electric motor via a speed reduction gear.

Furthermore, at least one of the spindle stroke threads 6, 6 "is arranged in a housing. The components of the spindle stroke threads 6, 6" are mounted in the housing in a rotating or displaceable manner. The respective linearly movable output member 8, 8 ", which is coupled to the pivot lever 7 and 7 '; 7", is mounted on the housing. According to one embodiment, the pivot lever 7, 7 ', 7 "is also mounted on the housing. Alternatively, the pivot lever 7, 7, 7" has a different mounting if it is attached to a shaft of the functional fitting 4 and the shaft is mounted on a bearing, which is attached to a furniture component, is pivotally mounted.

The linearly movable output member 8, 8 "of the spindle stroke thread 6, 6" experiences its linear movement by converting the rotational movement of a threaded portion of the spindle stroke thread 6, 6 "into the linear movement along the central longitudinal axis of the rotation movement Spindle lifting thread 6, 6 "their rotational movement through a speed reducer, the threads of the threaded spindle being in engagement with a non-rotatably mounted threaded nut of the respective output member 8, 8". Alternatively, a gear wheel of the speed reducer with a central and along the axis of rotation threaded bore with a nut thread provided, the thread of a non-rotatably mounted threaded spindle being connected to the threads of the nut thread and the threaded spindle carrying out the linear output movement with the respective output element 8, 8 "of the spindle lifting thread 6, 6".

Furthermore, each housing of the electromotive furniture drive 3 can consist of a plastic and can be firmly connected to a furniture component, as is the case, for example Figure 13 illustrated. Alternatively, the housing of the electromotive furniture drive 3 can be attached to a shaft to which the respective pivot lever 7, 7 ', 7 "is also attached, as is the case, for example Figure 14 illustrated.

According to Figure 2 Furthermore, the pivot lever 7 'is firmly connected to the back part 2b, so that the back part 2b and the pivot lever 7, 7' have a common pivot point in the form of the back part axis 2f. Alternatively, the back part 2b is connected directly or via a lever chain to the frame 5 and thus connected to the frame 5 in an articulated and movable manner. Then a lever, not shown, is provided, which is connected to the pivot lever 7 ' and engages under a support surface or under a spar of the back part 2b in order to be able to move it against the force of gravity.

The same applies to the arrangement of the leg part 2c. According to Figure 2 the swivel lever 7 "is firmly connected to the leg part 2c and can be swiveled with it about the leg part axis 2g, alternatively a lever is also provided which is firmly connected to the swivel lever 7" and is operatively connected to the leg part 2c when that Leg part 2c is articulated to a furniture component or to the frame 5.

The Figure 3 differs from Figure 2 and their description in that here the spindle stroke thread cooperating with the back part 2b has the reference symbol 6 ', the two spindle stroke threads 6' and 6 "with their associated output members 8 and 8" are illustrated in a longitudinal section, and that the furniture drive 3 only with the back part 2b and the neck support 2d are shown enlarged. A further embodiment of the coupling member 4a is provided here, the back part 2b and neck support 2d always moving simultaneously and synchronously with one another. It is still different from Figure 2 only one pivot lever 7 is provided. All other features mentioned Figure 2 are also realized here and are not listed separately. The Figure 3 thus shows a further embodiment of a coupling member 4 as a rod, which is guided eccentrically with its output end to the hinge 2e of the neck support 2d. The drive end of the coupling member 4a is articulated to a non-movable part of the furniture 1 or to a non-movable part of the furniture drive 3.

If the back part 2b is pivoted by the screw jack thread 6 ', the pivoting lever 7 moves in such a way that the neck support 2d is also pivoted at the same time because there is a relative movement between the drive end of the coupling member 4a and the non-moving part of the furniture 1 or not Movable part of the furniture drive 3 results when the back part 2b is pivoted about the back part axis 2f.

The Figure 4 differs from the figures above and their descriptions essentially in that the spindle lifting thread 6, 6 'for adjusting the back part 2b and the spindle lifting thread 6 ", 6'" for adjusting the leg part 2c are designed as so-called single drives, each with a spindle lifting thread 6 , 6 ', 6 ", 6'" with the associated motor is arranged in a separate housing. All other features of the previous figures, especially the Figures 2 and 3rd , are also realized here and are not listed separately.

In Figure 4 a side view of a slatted frame 2 with a second or with a further example of an electromotive furniture drive 3 is shown.

Furniture 1 is e.g. a slatted frame 2 or a bed, in which a head part 2b and a leg part 2c are adjusted into a raised position.

According to the Figure 4 , as well as additional alternatives to Figure 2 and to Figure 3 , Two spindle stroke drives 6 ", 6 '" are provided on the leg part and two spindle stroke drives 6, 6' on the back part side. In each side area of the furniture 1 there is therefore a spindle lifting drive 6, 6 ′ for the head part area / back part area and one screw lifting drive 6 ″, 6 ′ ″ per side for the foot part area. Each screw jack drive 6, 6 ', 6 ", 6"' can each be operated with an electric motor 3a. It is also possible, as will be shown below (e.g. Figures 6 , 7 , 13 ) that two spindle stroke drives 6, 6 are operated by a common electric motor 3a.

The housing of each spindle stroke thread 6, 6 ', 6 ", 6'" is provided with a connection for fastening to a furniture component. In this example, the furniture component is formed by the seat part 2a or by the leg part 2c. Furthermore, the seat part 2a or the leg part 2c can be understood as a beam member. On every spar link is like that Figure 1 illustrated, the support surface or the elements for receiving a padding or mattress are arranged. Furthermore, a section of the respective housing according to the statements according to the previous figures, in particular according to the Figures 2 and 3rd , also be designed as a bar link. As an alternative to this and for very short spar members, the entire housing of the respective spindle lifting thread 6, 6 ', 6 ", 6'" can be designed as a spar member.

Furthermore, the respective pivot lever 7 ', 7 "is pivotally mounted on the respective housing, one bearing forming the back part axis 2f and the other bearing forming the leg part axis 2g.

A spar member in the form of the back part 2b is connected to the pivot lever 7 '. For this purpose, the pivot lever 7 'is provided with a spar holder 70, which is designed as an insertion pocket or as a recess for receiving a spar of the back part. Analogously, the swivel lever is 7 " likewise provided with a beam holder 70 of the type mentioned at the outset, which is connected to a beam member in the form of the seat part 2a. The seat part 2a is provided permanently in the frame 5, so that when the electric motor 3a is in operation, the associated housing of the spindle lifting thread 6 ", 6 '", together with the leg part 2c, executes the adjustment or pivoting movement.

The spar seat 70 is in the designs Figure 4 pivotally mounted on the housings of the screw jack threads 6, 6 ', 6 ", 6'". In an alternative compact construction of the spar holder 70, the latter has two sections, one section being designed as a pivot lever 7 ', 7 "or acting as a pivot lever 7', 7". The other section of the spar seat 70 is designed as a spar seat 70 itself and takes the spar, for example the back part 2b designed as a spar, the neck support 2d designed as a spar, the seat part 2a designed as a spar, the leg part 2c designed as a spar, and the spar formed as a spar Lower leg part 9a. Both sections are formed from a one-piece molded part. One could also say that the pivot lever 7 ', 7 "is designed as an integral part of the spar seat 70. Alternatively, the pivot lever 7', 7" is completely or at least partially designed as a pivot lever 7 ', 7 "and connected to the spar holder 70.

In a further embodiment, not shown, an electric motor 3a with only one spindle stroke thread 6 is provided on the headboard side. A second spindle lifting drive 6 ″ is provided with a second electric motor 3a for moving the leg part side of the furniture 1.

The Figure 5 differs from that Figure 4 in that the housing of the spindle lifting threads 6, 6 'of the back part 2b now also performs the adjustment movement of the back part 2b, and that the housings of all the spindle lifting threads 6, 6', 6 ", 6"'each form a spar member, and that on each housing two spar receptacles 70 are arranged pivotably. All other features of the previous figures mentioned at the outset are also realized here and are not listed separately.

The Figure 5 shows a side view of a slatted frame 2 or a bed with movably mounted components and four spindle lifting threads 6, 6 ', 6 ", 6'", each with a linearly displaceable output member 8, 8 ', 8 ", 8'" per spindle lifting thread 6, 6 ', 6 ", 6"'. The output elements 8, 8 'of the spindle lifting thread 6, 6' move in opposite directions on the head part side (threads have an unequal pitch direction) and each act on a pivot lever 7 'and 7 "'. The output elements 8", 8 "'of the spindle lifting thread 6 ", 6 '" move in the same direction on the leg part (threads have the same direction of pitch), and while a thigh part 9 lifts, a lower leg part 9a moves back in a knee joint 9b. The pivot levers 7 ', 7 ", 7"', 7 "" are also attached to the spar receptacles 70 or alternatively form an integral part of the respective spar receptacle 70.

The Figure 6 and differs from all other figures and their descriptions essentially in that a motor unit 12 extends essentially within the frame 5, in particular extends from one inside of the frame to the other inside of the frame 5, and that it is is an assembly. The Figure 7 differs from that Figure 6 by the fact that here there are three structural units which, as will be explained in more detail, form an overall structural unit in the form of the motor unit 12 according to FIG Figure 6 is composed. All other features of the previous figures mentioned at the beginning, as well as features of the following figures, are also realized here and are not listed separately

Figure 6 and 7 show sectional views of a slatted frame 2 with a third or with a further example of an electromotive furniture drive 3.

The Figure 6 shows in cross section parts of a piece of furniture 1 designed as a slatted frame 2 with a furniture drive 3 with a view in the longitudinal direction of the slatted frame 2. The slatted frame 2 has a frame 5 (see also Fig. 1 ). On each side of the frame 5, a spindle lifting thread 6, 6 'is arranged, which is arranged on an inside of a side member of the frame 5 and / or in a side member of the frame 5. The electric motor 3a has two drive shafts 3b, 3b ', which transmit the rotary movement of the electric motor 3a via a flexible shaft 10, 10' to a worm 11a, 11a 'of a worm gear 11, 11' of a respective screw thread 6, 6 ' the flexible shaft 10, 10 'is designed as a multi-layer stranding and also comprises a support device. In one embodiment, the support device is designed as a flexible, non-rotatably fixed protective jacket which, at least in sections, leads with at least one section around the rotating part of the flexible shaft 10, 10 'located therein. Alternatively, the protective jacket is designed as a continuous tube made of a plastic. Since the rotational speed of the flexible shaft 10, 10 'is very high, means for reducing noise are provided. These are provided in the gap between the rotating part of the flexible shaft 10, 10 'and the support device or the protective jacket, so that there is no play between the rotating part and the non-rotating part Part of the flexible shaft 10, 10 '. In an embodiment of the means for noise reduction, a so-called flocking is provided for this purpose, which is firmly connected to the rotating part of the flexible shaft 10, 10 '. Another embodiment provides plastic bushings which are provided as a means for reducing noise.

A spindle stroke thread 6, 6 ', which is coupled to a respective worm wheel 11c, 11c', is not shown in more detail in order to generate a linear adjusting force which, according to the illustration, is perpendicular to the viewing plane. The worm wheel 11c, 11c 'forms the gearwheel mentioned at the outset, which is connected to a threaded spindle of the spindle lifting thread 6, 6'. The functional fitting 4 and / or the support surfaces 2a-d, which / which is / are coupled at least to the back part 2b, is / are not shown in more detail here.

Furthermore, the electric motor 3a is arranged in a tube or a tube which extends in the transverse direction of the slatted frame. The respective end of the tube adjoins a housing of the screw thread 6, 6 'and is thus firmly connected. Furthermore, the central longitudinal axes of the screws 11a, 11a 'are not aligned with the central longitudinal axis of the electric motor 3a. In accordance with the invention, a height offset is formed here, the electric motor 3a being offset upwards in relation to the regular set-up of the slatted frame 2 or the furniture 1 in order to reduce the overall height of the slatted frame 2. Furthermore, the motor unit can be combined to form a preassembled structural unit, as it is based on an example according to FIG Figure 13 is explained in more detail. Such a structural unit of a motor unit together with the spindle lifting threads 6, 6 'is designed to be used in a preassembled piece of furniture 1 or in a preassembled slatted frame 2. Alternatively, the furniture 1 or the slatted frame 2 can be mounted around the compact structural unit of the motor unit 12 so that a fused unit with the furniture 1 is created.

Furthermore, this embodiment contributes in an inventive manner to a width variability of the furniture 1 or the slatted frame 2. The manufacture of furniture 1 and slatted frames 2 in different widths is an important market requirement. On the part of the electromotive furniture drive 3, only two, at most only three, components are required for this. The length of the tube can be freely determined from a meter and cut to length accordingly. Any width of the motor unit 12 and thus also any width of the slatted frame 2 can thus be produced. The same applies to the flexible shaft 10, 10 ', since it can also be produced as a section from a piece goods. Provided the electric motor is placed halfway in the tube is, both flexible shafts 10, 10 'are of equal length. Furthermore, a connecting cable, not shown, leads to the electric motor 3a, which can run through the tube and can also be cut to length by the meter.

The purpose of the motor unit 12 is also mentioned. In one embodiment, the motor unit 12 is intended for adjusting the back part 2b. Alternatively, the motor unit 12 or another motor unit 12 can be determined with a different adjustment path for the adjustment of the leg part 2c. According to these two versions, two screw jack threads 6, 6 'are assigned to an electric motor 3a.

In another embodiment, the single electric motor 3a is assigned two flexible shafts 10, 10 'with two worm gears 11, 11' and two special designs of the screw jack threads 6, 6 ', whereby two screw spindles are assigned to each screw jack thread 6, 6', and where an output member 8, 8 ', 8 ", 8'" is assigned to each threaded spindle. Each output member 8, 8 ', 8 ", 8'" of a spindle lifting thread 6, 6 'acts on the free end of a pivot lever 7, 7', 7 ", 7 '", 7 "". An example to be assigned illustrates the Figure 20 , wherein the pivot lever 7 "', 7""are shown and the detailed structure will be explained.

The Figure 7 shows the execution according to Figure 6 . However, it is clearly illustrated that the linear drive units 21, 21 '(see Figure 13 ) with the spindle lifting threads 6, 6 'and the central motor unit 12 with a slatted frame unit 13 each form a preassembled unit, so that the assembly of the furniture 1 is thereby simplified.

The screws 11a, 11a are connected via screw couplings 11c, 11c 'to respective couplings 10a, 10a' of the ends of the flexible shafts 10, 10 'in a rotationally fixed and pluggable manner.

The motor unit 12 is connected to the side parts of the slatted frame 2, in which the drive units with the spindle lifting threads 6, 6 'are arranged, by means of corresponding connecting sections 12a, 12a', 12a ", 12a '". In a similar manner, the slatted frame assembly 13 can be plugged into side parts of the slatted frame 2 via connecting sections 13a, 13a ', 13a ", 13a'", which results in simple assembly.

An alternative embodiment of the Figure 7 differs from all other figures and their descriptions, but in particular in comparison to FIG. 6, essentially in that the one electromotive furniture drive 3 is now designed as a multi-part electromotive furniture drive 3, a motor unit 12 being designed to be connectable with two spindle lifting threads 6, 6 ' is. All other features of the previous figures mentioned at the beginning, as well as features of the figures below, are also realized here and are not listed separately

As before, the motor unit 12 extends essentially within the frame 5. This extension takes place in particular from one inside of the frame 5 to the other inside of the frame 5. According to the illustration in FIG Figure 7 the motor unit 12 consists of three structural units, which are pulled apart and shown in a non-assembled state. According to FIG Figure 7 essentially the electric motor 3a, the flexible shafts 10, 10 ', a coupling 10a, 10a' at a respective free end of the respective flexible shaft 10, 10 'and a housing in the form of a tube. The housing has two end regions, each of which is designed as a connecting section 12a, 12a ". These connecting sections 12a, 12a" correspond to connecting sections 12a ', 12a'"of the respective housing of the respective spindle lifting thread 6, 6 '. In a manner not shown has at least one connecting section 12a, 12a ', 12a ", 12a'" via an electrical plug connector consisting of a plug and the corresponding counterpart, for example in the form of a plug socket or as spring tongues.

The Figure 8 shows a furniture drive 3 of a fourth or alternative example in a side view, which according to the illustration is designed as a so-called single-motor single drive and with a C-shaped locking element 14 an output opening 15 into which a component of the slatted frame 2 or a functional fitting 4 with the pivot lever 7, 7 ', 7 ", 7'", 7 "" can be used to interact with the output member 8, 8 ', 8 ", 8'". A spindle stroke thread 6, 6 ', which is operated by the electric motor 3a and has the output element 8, 8', 8 ", 8 '", is not shown in more detail here.

The Figures 9 and 10 differ from all other figures and their descriptions essentially in that the output member 8 of the screw thread 6 is indirectly in operative connection with the pivot lever. All other features of the previous figures mentioned at the beginning, as well Features of the figures below are also realized here and are not listed separately

Figures 9 and 10 show a variant of the fourth example of the furniture drive 3, in particular after Figure 8 or one or more of the other figures, in two end positions, wherein in Figure 9 a starting position and in Figure 10 an extended position is shown. The starting position can also be understood as the basic position, as explained at the beginning, in which all the support surfaces of the furniture 1 or the slatted frame 2 are located in one plane and all the support parts, such as in particular the back part 2b and the leg part 2c, have moved completely downward.

The Figures 9 and 10 each show a sectional view of a furniture drive 3 with a spindle lifting thread 6 and a linear output member 8, which acts on at least one coupling member 17, for example a ball. The coupling members 17 are guided here in a guide contour 16a of a housing 16 of the furniture drive 3 between the driven member 8 and a pressure piece 7a of the pivot lever 7. In an unspecified manner, a spindle stroke thread 6, which has already been described above, is also provided here, which linearly moves the output member 8.

In an inventive manner, the overall height H of the housing 16 is hereby reduced in that the articulation and adjustment lever or swivel lever 7, which forms a common output element of the swivel furniture drive 3, is arranged obliquely in the basic position, contrary to the statements of the prior art. Prior art arrangements either have short pivoting levers 7, which leads to very high adjusting forces of the spindle lifting thread, or longer pivoting levers, which project downwards. Here, a long pivot lever 7 is used, and the low adjustment forces of the spindle lifting thread 6 can be used to generate a high torque of more than 450 Nm on the pivot lever 7 by providing coupling links 17 in the form of deflection elements or in the manner of a push chain for transmitting pressure forces are.

As in the Figures 9 and 10 can be seen, the linearly movable output member 8 moves horizontally, while the free end of the pivot lever 7 moves on a circular path with a substantially vertical chord. Furthermore, the guide contour 16a can be designed as a channel-like recess in the housing 16 of the electromotive furniture drive 3. Alternatively, the guide contour 16a raised. The coupling links 17 can be designed as balls or rollers which are guided individually and loosely through the guide contour 16a. Alternatively, the coupling links 17 are connected to one another to form a chain. Furthermore, viewed in section, they can be elongated and can be concave and / or convex in the respective end region. In the case of one end region, which is concave, the other end region is convex. In the event that both end regions are concave or convex, a coupling element (not shown in more detail) is provided between such coupling members 17, which is designed to correspond to the respective concave or convex end region in order to concatenate them.

The in the Figures 9 and 10 Coupling links 17 shown are in frictional connection with the guide contour. Alternatively, coupling links 17 are provided which are rotatably mounted relative to one another and roll or roll along the guide contour 16a. Such coupling links 17 are advantageously connected to one another in the manner of a chain.

The Figure 11 differs from all other figures and their descriptions essentially in that two individual furniture drives 3 are connected to one another in a first special way. All other features of the previous figures mentioned at the beginning, as well as features of the following figures, are also realized here and are not listed separately.

The Figure 11 shows two furniture drives 3, each with an electric motor 3a in a side view of a fifth example, which are connected to one another by means of a connecting element 18. In a preferred embodiment, the connecting element 18 is designed as a rigid profile and is inserted lengthwise into both housings 16 of the furniture drives 3. In an inventive manner, the connecting element 18 can be cut to the desired length, so that any desired center distance of the swivel shafts 19 of the swivel axes can be generated in the simplest way.

The connecting element 18 is inserted into a recess of the respective furniture drive 3. The fixation is done by a clamping mechanism, not shown, alternatively by a clamping screw. Another fixation by clamping can take place during the assembly of the furniture drives 3 together with the connecting element 18 if the housings 16 of each furniture drive 3 when the housing parts of the housing 16 are screwed together the connecting element 18 firmly clamped. Other fixations can be formed by a latching mechanism, which is not shown here. Furthermore, the insertion depth of the connecting element 18 in each furniture drive 3 is at least twice the height of the connecting element 18.

Furthermore, the Figure 11 fork-like U-shaped closure elements 14, which can be fixedly but rotatably connected to the respective housing 16 for locking the pivot shaft 19.

The Figure 12 differs from all other figures and their descriptions essentially in that two individual furniture drives 3 are connected to one another in a further special way. All other features of the previous figures mentioned at the beginning, as well as features of the following figures, are also realized here and are not listed separately.

The Figure 12 shows in an alternative way a connection unit 20 of two furniture drives 3 of a sixth or a further example. The connection unit 20 is designed as a multi-part connection unit 20. It here comprises two shell halves 20a, each with a plate 20c, the upper and lower edges of which are each provided with mutually parallel holding surfaces 20d, which extend at right angles to the plate 20c. The inner sides of the holding surfaces 20d are provided with opposite holding sections 20b, wherein in Figure 12 the lower holding surfaces 20d have ribs 20e to increase the stability between the holding sections 20b.

The holding sections 20b of the connecting units 20 here comprise a number of webs 200 which are attached transversely to the longitudinal direction of the plates 20c on the inner sides of the holding surfaces 20d. Each web 200 carries on its free side a cross web 201 which extends over the entire web length. The shape of the web 200 and the transverse web 201 forms a type of T-beam for T-slot connections. The webs 200 are arranged parallel to one another and each define an intermediate space 202 between them.

On the opposite end sections of the housings 16, holding sections 20b ′ are also formed on the upper and lower sides of the housings 16, which correspond in shape to the holding sections 20 of the connecting units 20. Thus, the holding sections 20b ′ of the housings 16 each have molded-in webs 210 with transverse webs 211. The webs 210 extend parallel to one another transversely to a longitudinal direction of the respective housing 16 and define T-shaped gaps 212 between them, such as, for example, those for T-slot connections.

To connect the housings 16 to one another, both shell halves 20a are now positively inserted from both long sides of the housings 16 parallel to the central longitudinal axis of the pivot axes 19a onto the respective housing 16 of the respective furniture drive 3. The holding sections 20b come into positive engagement with the holding sections 20b 'of the respective housing 16 corresponding to them. The webs 200 of the connecting unit 20 with the cross webs 201 are received in the T-shaped spaces 212, and the webs 210 of the housing 16 with the cross webs 211 are arranged in the spaces 202.

The housing 16 of the furniture drives 3 and the connection unit 20 are molded from a plastic. Of course, combinations of different materials can also be possible. Here, the power transmission from the housing 16 of the furniture drive 3 to the connection unit 20 takes place through the positive connection of the holding sections 20b 'of the housing 16 and the holding sections 20b of the connecting unit 20 and vice versa.

The holding sections 20b of the connecting unit 20 and the holding sections 20b 'of the housing 16 are in positive connection with one another after assembly. They are designed in the manner of a toothing, but can also have other geometries. As a result, the housing 3 can be connected to one another very simply and at the same time very robustly. The toothing is designed in the manner of a hook toothing, alternatively in the manner of the T-slot toothing and alternatively in a manner similar to a dovetail connection. The assembly created after the furniture drives 3 have been assembled with the connecting unit 20 can absorb the bending forces which arise in the operating state of the regular operation through this special connecting toothing. The bending forces are based on the output torque of the pivoting shafts, which are mounted pivotably about the respective pivot axis 19a.

There is still a difference between the statements of the Figure 11 and the Figure 12 called. While after Figure 11 the element connecting the furniture drives 3 in the form of the connecting element 18 transmits the connecting forces to the inside, that is to say to the insertion pockets, of the housing of the furniture drives 3, according to Figure 12 through the element connecting the furniture drives 3 in the form of the connecting unit 20, the connecting forces are transmitted to the outside of the housing of the furniture drives 3.

Further special features of the connecting unit 20 should be mentioned, in particular if it is produced as a plastic injection molded part. The connection unit 20 has a fixed overall length. Since it is of a very simple design and the holding sections 20b are always designed to be constant, the production of injection molds of other connection units 20 with a different overall length is also very simple. Individual axial spacings of the swivel axes 19a can then be generated while maintaining identical furniture drives, if the corresponding overall length of the connecting unit 20 is used. Furthermore, the connection unit 20 is formed like a shell and forms a type of casing after assembly. In addition, electrical components such as mains-operated power supplies, radio receivers, relay controls and others can be arranged in the interior of this enveloping housing, which is shown in the illustration of FIG Figure 12 not shown, but is conceivable. For receiving and connecting such electrical components, the connection unit 20 has mounts for these on the inside, as well as openings in the outer wall for the passage of cables and / or plug connections. In any case of the electrical component used in each case, the furniture drives 3 remain unchanged.

The Figure 13 can be used as an alternative to the execution according to Figures 6 and 7 be understood. Figure 14 differs in contrast, as will be described in more detail, and can be used as an alternative to one of the embodiments of Figures 8 to 12 be understood. All other features of the previous figures mentioned at the beginning, as well as features of the following figures, are also realized here and are not listed separately.

The Figure 13 shows a further example of a functional fitting 4 according to the third or according to a further example of the electromotive furniture drive 3 Figure 6 and 7 as a pre-assembled unit with a two-motor furniture drive 3. The functional fitting 4 is intended for use in a piece of furniture 1. The piece of furniture 1 is an independent unit as a whole without the unit shown and can in principle be used in its basic position.

Furniture drive 3 and functional fitting 4 form a compact unit here, so to speak, because output levers 40 of the functional fitting 4, which are coupled at least to the back part 2b or to the leg part 2c, with the Housing of the furniture drive 3 are connected, or are connected to it in an articulated manner, and this compact unit comprising the furniture drive 3 and the functional fitting 4 forms a functional system and is designed to be connectable to the furniture 1. Typically, the connection to the furniture 1 takes place on the inside of the frame 5 (see Fig. 1 ).

In a manner not shown in detail, the connecting tubes each have an electric motor 3a as the motor unit 12 and are designed to be freely cutable in length, so that the preassembled unit can be very easily adapted to different widths of a piece of furniture 1. It is also conceivable that a common connecting tube is provided as a motor unit 12 with two or more electric motors 3a. Then it can be an oval tube, seen in cross section, which extends at least along the length of the motors. Of course, other cross sections are also possible.

Here, the drive units 21, 21 'can be clearly seen, which are related to above Figure 5 and 6 have already been described. The spindle stroke threads 6, 6 ', 6 ", 6"', 6a, 6b are accommodated in a manner not shown by the housing of the drive unit 21, 21 '. A mounting unit 22, 22 'for attaching a frame 5 or slatted frame 2 is attached to the outer sides of the drive units 21, 21'. Alternatively, the assembly unit 22, 22 'each form a one-piece molded part with the housing of the drive unit 21, 21'. The height of the assembly unit 22, 22 'measured from the lower edge of the furniture 1 or the slatted frame 2 extends up to the closest structural limit of the furniture 1 or the slatted frame 2, which is caused, for example, by the bearings and receptacles of the spring wood or other support elements for receiving a cushion or a mattress are defined. The overall height of the respective assembly unit 22, 22 'is less than the overall height of the respective drive unit 21, 21'. Furthermore, several assembly units 22, 22 'can be used for each drive unit 21, 21'. The assembly unit 22, 22 'also has the task of arranging the respective drive unit 21, 21' at a distance from the frame and to transmit the supporting forces from the housing of the drive unit 21, 21 'to the frame 5.

Another example of a functional fitting 4 according to the sixth or according to a further example of the electromotive furniture drive 3 in particular according to Figure 12 is in Figure 14 shown. Another preassembled unit consists of a two-motor furniture drive 3 in a housing 16 with swivel shafts 19, which on the outside is a polygonal tube 19b, as shown in the illustration Square. It is also possible for the pivot shafts 19 themselves to have a polygonal cross section without being encased by a tube. Furthermore, they can have a section which is designed in the manner of an outside polygon. Alternatively, the swivel shaft is provided on the outside with a projecting driver.

The respective output member as the output lever 40 of the furniture drive 3 is pivotally mounted to the housing 16 according to this embodiment and has an inner profile which corresponds to the outside profile of the pivot shaft 19 or the polygonal tube 19b in a form-fitting manner and is therefore in a rotationally fixed connection therewith. The pivot shaft 19 or the polygonal tube 19b is supported by end shields 19c which are rotatably arranged on the respective free end of the pivot shaft 19 or the polygonal tube 19b. The end shields 19c themselves are connected to the frame 5 of the furniture 1 or the slatted frame 2, which is not shown here for the sake of simplicity.

In a manner not shown, the swivel shafts can be cut to length, so that the preassembled unit can be very easily adapted to different widths of a piece of furniture 1.

The Figures 15 and 16 can also be used as an alternative or as a further development, in particular in accordance with the feature of a furniture drive 3 with one as already mentioned above in Figure 14 outside polygon described. All other features of the previous figures mentioned at the beginning, as well as features of the following figures, are also realized here and are not listed separately.

Figures 15 and 16 show a furniture drive 3 in a sectional view according to a seventh or according to another example from the side in two end positions. A spindle stroke thread 6 is shown with a linear output member 8, which acts on a connecting rod 23 which is articulated on the free end of a link lever 24 in a pivot axis 24a. The connecting rod 23 functions here as a deflection element. It can also be designed as a coupling element 17. Furthermore, according to this embodiment, the articulation lever 24 is a component of the furniture drive 3 and has a pocket 25 for coupling the pivot shaft 19. For this purpose, the pivot shaft 19 has a driver 26, which is designed to be coupled to the pocket 25.

As shown, the cross section of the pivot shaft 19 is circular. The driver 26 is non-rotatably connected to the pivot shaft 19 and is elongated. Another driver 26, not shown in detail, is of short design and as a projecting driver 26, as at the beginning and in Figure 14 already mentioned firmly connected to the pivot shaft 19. According to the representations of Figures 15 and 16 are shown again separately next to the furniture drive 3 to illustrate the arrangement of the pivot shaft 19 and driver 26. From the Figure 16 is also the assembly of the pivot shaft 19 with the furniture drive. If the furniture drive 3 according to the Figure 16 is in a basic position, which is referred to here as the mounting position, the pivot shaft 19 together with the driver 26 can be mounted on the furniture drive 3 and removed therefrom. For this purpose, the furniture drive 3 and the pivot shaft 19 move relative to one another, specifically in the radial direction of the pivot shaft 19, which is defined at right angles to the central longitudinal axis of the pivot shaft 19. To securely fix the pivot shaft 19 on the furniture drive 3 or on the articulation lever 24 against unwanted dismantling, securing means are also provided, which will not be explained in more detail here. Such securing means can, for example, by a closure element 14 according to the Figures 8 to 11 or a closure element 16d Figure 17 be trained. Furthermore, the pivot lever 7 according to the Figures 9 and 10 be designed as a link lever 24 as described here if it forms part of the functional system of the preassembled furniture drive 3 with the furniture drive 3.

The Figures 17-19 show an eighth or a further example of a furniture drive 3 in a side view, partially in a sectional view, and a pivot lever 7 in a non-assembled and in an assembled position. All other features mentioned at the beginning of the previous figures, as well as features of the following figures, are shown here in Figures 17 to 19 also realized and are not listed separately. The articulation lever 24 or the swivel lever 7 is a fixed component of the functional fitting 4 and has a swivel axis 19a, which is fixedly but pivotably mounted in a recess as the output opening 15 of the furniture drive 3. Furthermore, the free end of the pivot lever 7 has a pressure piece 7a. In this embodiment, the pressure piece 7a is designed as a round body parallel to the axis of rotation 19a.

The width of the pressure piece 7a in the direction of the pivot axis 19a is greater than a width of the pivot lever 7 in the direction of the pivot axis 19a, so that the pressure piece 7a at least on one side of the pivot lever 7 in the direction the pivot axis 19a protrudes. The linear adjusting element as the drive element 8 of the spindle lifting thread 6 acts on the pressure piece 7a, so that the eccentric force acting on the pivot axis 19a produces a torque which is transmitted here to the functional fitting 4 in a manner not shown here. The functional fitting 4 is mechanically operatively connected to the pivot shaft 19.

The special feature of this embodiment is that the pressure piece 7a is guided lengthwise (ie in the direction of the pivot axis 19a) in arcuate slots / pockets or pivoting contours 16c of the housing 16, the center point of each circular arc of the pivoting contours 16c in the central longitudinal axis of the pivot axis 19a lies. In an inventive manner, the pivot lever 7 is inevitably guided within the housing 16 in such a way that a closure element 14 or 16d can be omitted, which rotatably fixes the pivot axis 19 in the recess 15 of the housing 16. The pressure piece 7a is guided in the housing by the above-mentioned lateral projection of the pressure piece 7a being guided in the arcuate pocket 16c, as follows Figures 18 and 19th explain in more detail.

The closure element 16d is shown here in a variant. The Figure 17 shows the closure element 14 in a non-assembled position above the furniture drive 3. The closure element 14 here has a fork-shaped design with an opening and is thus placed on the pivot shaft 19 mounted on the furniture drive 3. The fork-shaped opening of the closure element 14 shows how it Figure 17 disclosed in the direction of the furniture drive 3. Finally, the closure element 14 is rotated about the central longitudinal axis of the pivot shaft, that is to say about the pivot axis 19a. For this purpose, the closure element 14 has a first form-fitting contour which is concentric with the pivot axis 19a. The housing 16 of the furniture drive 3 has a second form-locking contour in the area of the driven opening 15, which also runs concentrically to the pivot axis 19a when the pivot shaft 19 on the furniture drive 3 is in the assembly position. After the closure element 14 has been rotated, the first and the second form-fitting contours interlock positively, so that a form-fitting connection is formed between the closure element 14 and the housing 16 of the furniture drive 3.

Figure 18 each shows an open housing 16 of the furniture drives 3, so that it is possible to look inside. In the further version there is still a straight one Introducing contour 16b is provided, which opens into the pivoting contour 16c. The contours 16b and 16c are arranged opposite each other in the housing 16, which consists of two halves divided in the longitudinal direction.

As already described at the outset, the lateral projection of the pressure piece 7a is guided in the insertion contour 16b and in the pivoting contour 16c. The guidance along the insertion contour 16b takes place exclusively during the assembly or disassembly of the pivot shaft 19 together with the pivot lever 7 or link lever 24. In the operating state of the regular operation or in the operational state of readiness for the regular operation, the pressure piece 7a is located in the pivoting contour 16c. To ensure that the pressure piece 7a always remains in the pivoting contour 16c in the operating state of the regular operation, another embodiment provides yet another closure element 16d which is designed to be insertable into the insertion contour 16b and can be mechanically fixed. The further closure element 16d is introduced either along the insertion contour 16b or at right angles to it from the side of the outer wall of the housing 16. Alternatively, the further closure element 16d is movably mounted on the housing 16 and can be moved from a first release position into a second locking position. In the right half of the picture Figure 18 the further closure element 16d is brought into the blocking position. This results in a closed channel-like pivoting contour 16c.

Figure 19 shows the pivot shaft 19 or the pivot lever 7 or the articulation lever 24 with attached pressure piece 7a in the assembled position according to the operating state of the regular operation. Two end positions of the swivel lever 7 and the articulation lever 24 can be seen.

In another embodiment, no insertion contour 16b is provided, the swivel lever 7 being a component of the furniture drive 3 and having a profile bore along the central longitudinal axis of the swivel axis 19a for receiving a profile shaft designed as a swivel shaft 19. The profile bore can be designed as a square (see for example Figure 12 and 14 ). Then the lateral projection of the pressure piece 7a can only be connected to the pivoting contour 16c. The housing 16 also has no drive opening 15. Closure elements 14, 16d can also be saved here. As a result, a very compact design of a furniture drive is formed, with the swivel lever 7 with attached pressure piece 7a, such as in one assembly step explained in more detail at the beginning, as a component in the assembly process before the housing 16 of the furniture drive 3 is closed and assembled together.

In another embodiment, instead of the profile bore, the swivel lever 7 can have a pocket which can be coupled to a driver of the swivel shaft 19 (similarly Figure 15-16 ).

In Figure 20 A ninth or a further example of the electromotive furniture drive 3 is shown in a plan view of an opened drive housing 3b. All other features of the previous figures mentioned at the outset are also realized here and are not listed separately.

An electric motor 3a is provided for adjusting both the back part 2b and the leg part 2c of the furniture 1 (bed or slatted frame 2) (see Figure 1 ). The one electric motor 3a thus adjusts a plurality of furniture components 2b, 2c which are coupled to the electromotive furniture drive 3. This is in Figure 20 indicated by reference numerals 2b and 2c. For this purpose, several spindle stroke threads 6a, 6b are provided.

In one embodiment, a gear wheel 27, which is connected downstream of the electric motor 3a, is connected to two threaded spindles 28, which have opposite directions of pitch and have a common axis of rotation with the gear wheel 27. The gear wheel 27 is designed as a worm wheel. In one embodiment, a threaded spindle 28 is coupled on both sides of the gear wheel 27. Analogous to the embodiments mentioned at the outset, the gear wheel 27 or the worm wheel 11b, 11b 'is coupled to two spindle lifting threads 6a, 6b.

In one embodiment, the threaded spindles 28 are rotatably mounted in a fixed bearing. A nut 29 is placed on the threads of each spindle. Each nut 29 is non-rotatable, but designed to be longitudinally displaceable and guided in the housing 16 of the furniture drive 3. Each nut 29 acts directly or via intermediate links 29a on an adjusting lever or pivoting lever 7 "'7" "which is coupled to the associated furniture component 2b, 2c and / or to a furniture component 2b, 2c to be adjusted.

Thus, a head or back nut 29b is connected to the furniture component for adjusting the back part 2b. A leg nut 29c stands there with the furniture component of the leg part (and the foot part) 2c in connection. In one embodiment, the back part nut 29b acts directly on the back part 2b of the furniture 1 and the leg part nut 29c on the leg part 2c of the furniture 1 via an intermediate member 29a.

When the motor 3a is operating, the back part nut 29b and the leg part nut 29c move in opposite directions to one another. In the basic position of the furniture 1, when all the furniture components 2b, 2c are brought back to the starting position by gravity, there is a larger adjustment distance of approximately 10 mm to 50 mm between the leg nut 29b and the intermediate member 29a, while a distance between the Back part nut 29b and its associated adjusting or pivoting lever 7 "'is only slight Figure 20 illustrates this basic position.

When the motor 3a is operated in the first direction of rotation to adjust the connected furniture components 2b, 2c from the basic position, only the back and head part 2b is initially adjusted until the adjustment distance between the leg part nut 29c and the intermediate member 29a has reduced to zero , which has the effect that the leg foot part 2c is then additionally adjusted by the leg part nut 29c and by the intermediate member 29a.

When the motor 3a is operated in the second adjustment direction for adjusting the connected furniture components 2b, 2c from the basic position, coupling slides 30 are also provided, which are slidably mounted between the back nut 29b and the intermediate member 29a.

In this second direction of rotation of the motor 3a, the back part nut 29b moves in the direction of the leg part nut 29c, actuates the coupling slides 30, which transmit the adjusting force generated by the back part nut 29b to the intermediate member 29a, which means that only the leg and foot part 2c is adjusted as a furniture component becomes. In other words, in this second direction of rotation of the motor 3a, the back part nut 29b exclusively actuates the leg and foot part 2c via the interposed links consisting of the intermediate link 29a and the coupling slide 30. For this purpose, guide means such as webs or recesses for displaceably guiding the coupling slide 30 are provided. For example, two opposing coupling slides 30 can be arranged, only one is shown here. In principle, all the coupling slides 30 are arranged around the central longitudinal axis of the threaded spindle 28, alternatively arranged in a circular symmetry, in order to be able to transmit adjusting forces optimally evenly distributed between the back part nut 29b to the intermediate member 29a.

In one embodiment, the coupling slide 30 is constructed in several parts. A coupling slide 30 can be rod-shaped. A coupling slide 30 can be spatially shaped. A coupling slide 30 can be formed in several parts and consist of a number of components in the manner of an assembly. Likewise, the intermediate member 29a can also be composed of a number of components to form an assembly.

According to the Figure 20 the motor 3a is connected, for example, directly to the housing 16 of the furniture drive 3. Alternative forms of connection and coupling can be found, for example, in Figures 6 , 7 and 13 again when a flexible shaft 10, 10 'is connected in a rotationally fixed manner as a rotary transmission shaft to the motor shaft and to a worm 11a, 11a', in which case only the worm 11a, 11a 'is mounted in the housing of the furniture drive 3 and with the gearwheel 27 in drive connection.

According to the illustration Figure 20 the pivot levers 7 "', 7""are pivotally mounted on the housing 16 of the furniture drive 3. Other designs for mounting or receiving a pivot lever 7 or a link lever 24 of the abovementioned figures can also be implemented here Figure 20 is not limited to the illustrated and named embodiment of an arrangement and mounting of the pivot lever 7 '", 7"". Alternatively, the pivot lever 7'", 7 "" can be firmly connected to a pivot shaft 19, a polygonal tube 19b or a furniture component 2b, 2c be, or alternatively mechanically coupled. Rather, the features and alternatives of the previous figures should also be realized here and are not listed separately.

Reference list

1

Furniture

2nd

Slatted frame

2a

Seat part

2 B

Back part

2c

Leg section

2d

Neck support

2e

hinge

2f

Back part axis

2g

Leg part axis

3rd

Furniture drive

3a

Electric motor

3b

Drive housing

4th

Functional fitting

4a

Coupling link

5

frame

6, 6 ', 6 ", 6"', 6a, 6b

Screw thread

7, 7 ', 7 ", 7"', 7 ""

Swivel lever

7a

Pressure piece

8, 8 ', 8 ", 8"'

Output link

9

Thigh part

9a

Lower leg part

9b

Knee joint

10, 10 '

Flexible wave

10a, 10a '

coupling

11, 11 '

Worm gear

11a, 11a '

slug

11b, 11b '

Worm wheel

11c, 11c '

Worm clutch

12th

Motor unit

12a, 12a ', 12a ", 12a'"

Connecting section

13

Slatted frame assembly

13a, 13a ', 13a ", 13a'"

Connecting section

14

Closure element

15

Output opening

16

casing

16a

Guide contour

16b

Insertion contour

16c

Swivel contour

16d

Closure element

17th

Coupling link

18th

Fastener

19th

Swivel shaft

19a

Swivel axis

19b

Polygonal tube

19c

End shield

20

Connecting unit

20a

Half of the shell

20b, 20b '

Holding section

20c

plate

20d

Holding surface

20e

rib

21, 21 '

Drive unit

22, 22 '

Assembly unit

23

Connecting rod

24th

Link lever

24a

Swivel axis

25th

bag

26

Carrier

27

Gear wheel

28

Threaded spindle

29

mother

29a

Pontic

29b

Back part nut

29c

Leg section nut

30th

Sliding gate valve

40

Output lever

70

Holmenaufnahme

H

Overall height

Claims (5)

1. Electromotively adjustable slatted frame (2), having supporting surfaces of an upholstery or a mattress which are adjustable relative to one another and/or to fixed components of the slatted frame (2), a furniture drive (3) having at least one electric motor (3a) and a spindle lifting thread (6, 6', 6", 6"', 6a, 6b) for adjusting the adjustable supporting surfaces, a functional fitting (4) and a frame (5),
   wherein the adjustable supporting surfaces are surrounded by the frame (5), wherein the functional fitting (4) has driven levers (40) which are coupled at least to one adjustable supporting surface and are connected, or connected in an articulated manner, to a housing of the furniture drive (3), wherein a compact unit of furniture drive (3) and functional fitting (4) is formed as a functional system and is connected with the piece of furniture (1) designed as a slatted frame (2) in each case to the inside of the frame (5),
   wherein the compact unit consisting of furniture drive (3) and functional fitting (4) has two drive units (21, 21') in which the spindle lifting threads (6, 6', 6", 6"', 6a, 6b) are arranged,
   characterized in that the compact unit consisting of furniture drive (3) and functional fitting (4) is arranged within the silhouette or contour of the frame (5) with a lower boundary plane of the slatted frame (2) and is connected with the slatted frame (2) in each case to the inside of the frame (5) via the drive units (21, 21').
2. Slatted frame (2) according to claim 1, characterized in that an assembly unit (22, 22') for mounting the frame (5) or slatted frame (2) is fastened in each case to the outer sides of the drive units (21, 21').
3. Slatted frame (2) according to claim 2, characterized in that the assembly unit (22, 22') forms a respective integral shaped part with the housing (16) of the drive unit (21, 21'), wherein an overall height of the respective assembly unit (22, 22') is less than the overall height of the respective drive unit (21, 21').
4. Slatted frame (2) according to one of the preceding claims, characterized in that the furniture drive (3) is a twin-motor furniture drive in a housing (16) with pivot shafts (19), wherein the pivot shafts (19) extend out of the twin-motor furniture drive (3) transversely to a longitudinal axis thereof and comprise a polygonal tube (19b) on the outside.
5. Slatted frame (2) according to claim 4, characterized in that a respective driven member (40) of the furniture drive (3) is mounted pivotably relative to the housing (16) and has an inner profile which is connected to the outer profile of the pivot shaft (19) or the polygonal tube (19b) in a circumferentially positive-locking and rotationally fixed manner therewith, wherein a bearing of the pivot shaft (19) or the polygonal tube (19b) is formed by bearing shields (19c) which are arranged in a rotatably mounted manner on the respective free end of the pivot shaft (19) or of the polygonal tube (19b), and wherein the bearing shields (19c) themselves are connected to the frame (5) of the slatted frame (2).

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