EP3980619B1 - Piece of furniture having a door held by a translation device - Google Patents

Description

The invention relates to a piece of furniture, such as a cupboard, with a one-piece or multi-part door, in particular a folding sliding door, which is held by a displacement device and can be moved into a door compartment.

To close an opening in a piece of furniture, doors, in particular folding sliding doors, are often used, which can be moved into a door compartment of the piece of furniture after the piece of furniture has been opened. When the piece of furniture is opened, the door is turned or folded to the side. So that the door does not appear disruptive afterwards, it is moved into the door compartment, which is usually separated from the interior of the piece of furniture by a partition.

The US8336972B2 discloses a piece of furniture with a displacement device, by means of which a folding sliding door connected to a mounting profile by hinges can be extended from a door compartment, rotated in front of an opening and then retracted into the door compartment. The displacement device comprises a scissor cross, which has two articulated scissor elements which hold the mounting profile aligned in a vertical position during displacement within the door compartment. The scissor cross is connected to the mounting profile by a fastening device. After loosening the fastening device, the mounting profile can be moved vertically relative to the scissor cross in order to position the door within the door compartment at the same distance from the top and bottom of the piece of furniture.

If a scissor cross is not used, it should be noted that parts of the lever mechanism are secured before being connected to the mounting profile may occupy an undefined position, so that the optimal position must first be determined with appropriate effort before connection to the mounting profile.

The mounting profile is not only held by the scissor cross, but is also guided along an upper and a lower rail to prevent the scissor cross from twisting and jamming.

It should be noted that a displacement device of this type can take up a relatively large amount of space, so that the door held by the displacement device cannot be recessed into the door compartment as far as desired. The door or folding sliding door and its elements must therefore be dimensioned accordingly smaller. Alternatively, the door compartment can be made correspondingly larger, which is why the design of the displacement device can have an undesirable influence on the dimensions of the piece of furniture.

The EP3029248A1 discloses a displacement device with a lever mechanism, which is designed as a scissor cross or as a parallelogram and has levers guided parallel to one another, by means of which a mounting profile, which is connected in an articulated manner to a door, is slidably held.

The US2014150208A1 discloses a piece of furniture that includes a folding sliding door with multiple door elements and a guide rail that runs along the front of the piece of furniture and around a 90 ° curve into the door compartment. In this piece of furniture, the front door element is held by a guide mechanism that runs ahead when the door is opened and closed. After the folding sliding door has been retracted into the door compartment, the folding sliding door is therefore suspended on one side, which is why misalignment of the folding sliding door can occur. At the Therefore, when retracting into the door compartment, the folded sliding folding door may potentially contact the floor or ceiling of the furniture. Due to manufacturing and assembly tolerances, the task of the displacement device to hold the door or folding sliding door in a vertical orientation in any position within the door compartment can often not be optimally fulfilled.

The present invention is therefore based on the object of creating an improved piece of furniture with an improved displacement device.

By means of the improved displacement device, the one-piece or multi-part door should advantageously be able to be moved into a door compartment without contacting the floor or ceiling of the door compartment.

In particular, an improved displacement device is to be created for a piece of furniture which has a folding sliding door with door elements, one of which is held by means of a guide drive which is displaceable along a guide rail which runs along the front of the piece of furniture and into the door compartment.

The displacement device should take up little space and allow the mounting profile to be moved over a maximum distance.

The displacement device is intended to hold the mounting profile with the door connected to it in a stable vertical orientation over the entire displacement range and in particular in the end positions. Any misalignments that occur should be correctable in a simple manner and with simple means.

The displacement device should also allow the mounting profile and also the door to be mounted in a simple manner.

This task is solved with a piece of furniture which has the features specified in claim 1. Advantageous embodiments of the invention are specified in further claims.

• welche Verschiebevorrichtung ein Hebelwerk aufweist, das vier in einer Ebene drehbare Hebeleinheiten, einen ersten Verbindungssteg und einen zweiten Verbindungssteg und einen Mittelsteg umfasst,
• welcher Mittelsteg auf einer ersten Seite durch eine erste Hebeleinheit und eine zweite Hebeleinheit, die voneinander beanstandet und parallel zueinander ausgerichtet sind, je gelenkig mit dem ersten Verbindungssteg verbunden ist, das mit wenigstens einer am Möbelstück montierten Haltevorrichtung verbunden ist, und
• welcher Mittelsteg auf einer zweiten Seite durch eine dritte Hebeleinheit und eine vierte Hebeleinheit, die voneinander beanstandet und parallel zueinander ausgerichtet sind, je gelenkig mit dem zweiten Verbindungssteg verbunden ist, das mit dem Montageprofil verbunden ist.

The piece of furniture comprises a one-piece or multi-part door, which serves to close an opening of the piece of furniture, and which is connected by hinges to a mounting profile, which is held displaceably within a door compartment by a displacement device between a first end position and a second end position,

• which displacement device has a lever mechanism which includes four lever units that can be rotated in one plane, a first connecting web and a second connecting web and a central web,
• which center web is each articulated on a first side by a first lever unit and a second lever unit, which are spaced apart from one another and aligned parallel to one another, to the first connecting web, which is connected to at least one holding device mounted on the piece of furniture, and
• which center web is each articulated on a second side to the second connecting web, which is connected to the mounting profile, by a third lever unit and a fourth lever unit, which are spaced apart from one another and aligned parallel to one another.

According to the invention it is provided that in the first end position of the mounting profile the lever units are at least are aligned approximately parallel to the first and second connecting web and are at least partially sunk into the central web, which central web is at least partially sunk into at least one of the first and second connecting webs in this first end position of the mounting profile.

The first connecting web can be connected to the holding device in one piece or detachably, if necessary via an adapter. The second connecting web can be connected to the mounting profile in one piece or detachably, if necessary via an adapter.

The parallel alignment of the parts of the displacement device in the end position in which the door is completely pushed into the door compartment and the mutual displacement of the parts of the displacement device result in a small space requirement. The central web and the lever units and preferably also connecting webs connected to them can be moved completely or partially into one another, so that they are aligned parallel and almost coaxial to one another with a minimum distance. The door can therefore be pushed into the door compartment over a maximum distance, which is why doors with a larger width can be used.

The displacement device according to the invention can be used particularly advantageously in a piece of furniture which has a folding sliding door or a door with several door elements, of which a door element is held by a guide drive which can be displaced along a guide rail which has a first rail part running along the front of the piece of furniture and a second rail part running within the door compartment, which are connected to one another by a rail curve. Through the According to the displacement device according to the invention, the door or folding sliding door can be held vertically aligned in any position within the door compartment.

If there is a misalignment of the door inserted into the door compartment, this can be easily compensated for either by a bearing element or corrected by adjusting the lever mechanism.

The displacement device can be adjusted between a first end position in which the lever mechanism is completely folded closed and the door is completely pushed into the door compartment, and a second end position in which the lever mechanism is fully unfolded and the door is correspondingly extended out of the door compartment.

In preferred embodiments, the first and second lever units are connected by lever joints, on the one hand, to the first connecting web and, on the other hand, to the central web. In this embodiment, the third and fourth lever units are connected by lever joints on the one hand to the second connecting web and on the other hand to the central web.

To adjust the displacement device or the lever mechanism, it is preferably provided that the distance between the lever joints and thus the distance between the axes of rotation of the lever joints of at least one of the lever units is selectively adjustable. An adjustment range is provided that allows the maximum possible misalignments to be corrected.

The distance between the lever joints and thus the distance between the associated axes of rotation of the third and fourth lever units, which form the underside of the lever mechanism and are used to correct any inclination in the lever unit, is preferably adjustable End position of the mounting profile is particularly suitable when the lever mechanism is folded.

To change the distance between two mutually corresponding lever joints, it is preferably provided that at least one of the lever joints is slidably mounted along the longitudinal axis of the associated lever unit and can be moved and fixed by means of an adjusting device.

The adjusting device preferably comprises a bearing block which is mounted in the associated lever unit so as to be displaceable at least approximately along its longitudinal axis, which can be adjusted by means of an adjusting screw which is held in a rotatable and axially non-displaceable manner and which holds a cardan shaft of the associated lever joint. The cardan shaft determines the axis of rotation, which is why moving the bearing block also changes the distance between the axes of rotation of the lever unit in question. In this way, the inclination of the held door or folding sliding door can be easily adjusted, especially in the critical end position of the mounting profile with the lever mechanism folded.

The bearing block preferably has a cross section that is adapted to an internal cross section of the lever unit, which corresponds, for example, to a U-profile provided with retaining grooves or a T-profile. The bearing block is therefore held in a form-fitting manner and can only be moved along the longitudinal axis of the lever unit. The adjusting screw is preferably aligned axially parallel or coaxial to the longitudinal axis of the lever unit and engages with the screw shaft in a threaded hole in the bearing block and can thus move it axially by rotating the adjusting screw. So that the cardan shaft can now be moved with the bearing block, corresponding longitudinal openings must be provided in the legs of the U-profile-shaped lever unit, for example. The longitudinal openings preferably run parallel to the longitudinal axis of the lever unit and thereby allow the displacement of the cardan shaft and thus the axis of rotation of the lever joint.

The adjusting screw itself is held by a holding block in an axially non-displaceable but rotatable manner. The holding block is, for example, braced within the inner cross section of the lever unit or held in a slot which is machined into the lever unit, for example, perpendicular to the longitudinal axis of the lever unit. The holding block has ribs or wings on both sides, for example, which can be inserted into holding grooves which run perpendicular to the longitudinal axis in the lever unit. By inserting the adjusting screw and connecting it to the bearing block, which can only be moved axially, the holding block is now also fixed in the receiving position.

The first and second lever units are held rotatably by the central web and must therefore be brought into a corresponding orientation before they can be connected to the mounting profile, which corresponds in mirror image to the orientation of the third and fourth lever units. This connection takes place in the second end position of the displacement device with an unfolded part of the lever mechanism, which includes the third and fourth lever units, which are already connected to the holding device or the holding devices. The first and second lever units are not yet connected and are therefore rotated downwards against the bottom of the door compartment by gravity. The task is therefore to facilitate the correct connection of the lever mechanism to the mounting profile and, in particular, to avoid multiple adjustments.

So that the installer does not have to determine the alignment himself, a symmetrizing device is preferably provided, which ensures that the first and second lever units are always mirror-symmetrical to the third and fourth Lever unit are aligned. The symmetry device comprises two symmetry levers connected to one another by a sliding joint, the ends of which are each connected to an associated lever unit in such a way that they form a four-bar linkage. The two symmetry levers are connected to lever units of the lever mechanism that are at the same height, ie to the first and third lever units and/or the second and fourth lever units. The balancing unit can therefore be designed in one part or in two parts. The diagonally opposite lever joints of the resulting four-bar linkage form pairs of joints that behave in opposite ways. As one pair of joints approaches, the distance of the other pair of joints increases and vice versa. The sliding joint is slidably guided and held in a guide track of the central bar and moves back and forth when the four-bar linkage is changed.

This ensures that the lever units of the lever mechanism are always kept at the same height. The first and second lever units provided for connection to the mounting profile and the first connecting web connected thereto are therefore held in the second end position of the lever mechanism in a position in which they can be connected to the mounting profile. It is therefore not necessary to manually hold the first and second lever units and the first connecting web connected thereto in a suitable position and, if necessary, to make corrections.

It should be noted that the invention therefore includes various solutions that can also be used independently of one another, but which ideally complement each other. The adjustability of the distances between the axis of rotation of the lever mechanism by at least one adjusting device can be independent of the use of one One-piece or two-piece balancing device can be provided. Conversely, the balancing device can be used regardless of the adjustability of the distances between the axis of rotation of the lever mechanism. However, if all solutions are implemented, the overall installation effort is significantly reduced. Incorrect settings and undesirable misalignments of the door or folding sliding door as well as the corresponding time-consuming corrective measures are no longer necessary.

Damping elements are preferably connected in the piece of furniture or to the displacement device, which act directly or indirectly on the door and gently grasp it and accompany it into the end position.

In preferred embodiments, the third and fourth lever units, which face the at least one holding device connected to the piece of furniture, each comprise two preferably plate-shaped lever elements which are arranged at a distance from one another and preferably parallel to one another. The first and second lever units, which face the mounting profile, also preferably each comprise two preferably plate-shaped lever elements which are arranged at a distance from one another and preferably parallel to one another. In preferred embodiments, however, the lever units are formed in one piece.

The central web preferably has an L-profile, an H-profile or a U-profile with a profile space delimited by profile parts into which the associated first and / or second and / or third and / or fourth lever unit can be sunk.

Preferably, the third and fourth lever units are the at least one connected to the piece of furniture Holding device facing, or the first and second lever unit, which face the mounting profile, can be screwed into the center web.

In a further preferred embodiment it is provided that the first and second lever units or the third and fourth lever units are rotatably held on the outside of the central web.

The lever units can therefore be aligned parallel to it inside or outside the center bar, so that only minimal space is required. The lever units can be partially or preferably completely sunk into the center bar.

In a further preferred embodiment it is provided that the first or the second rod-shaped connecting web each have an L-profile or a U-profile, which has a profile space delimited by profile parts or adjacent to it, into which parts of the lever mechanism can be inserted or screwed in. The profile spaces of the connecting webs can be identical or have different dimensions. Equal parts of the lever unit and the center bar can be accommodated by the connecting bars. If the profile spaces are designed differently, it can be provided that one of the connecting webs not only accommodates the lever units and the central web, but also the other connecting web in whole or in part.

The lever units rotate together downwards or upwards when the lever mechanism is actuated. The direction of displacement is chosen taking into account whether the weight of the lever mechanism should support the pushing in or pulling out of the door.

Fig. 1

ein Möbelstück 10 mit einer von einem Montageprofil 85 gehaltenen Tür 11 vor der Montage einer erfindungsgemässen Verschiebevorrichtung 1;

Fig. 2

ein Möbelstück 10 mit einer erfindungsgemässen Verschiebevorrichtung 1, die ein Hebelwerk 5 mit vier Hebeleinheiten 51, 52, 53, 54 aufweist, das einerseits mit Haltevorrichtungen 84A, 84B und andererseits mit einem Montageprofil 85 verbunden ist, an dem eine Tür 11 mit zwei Türelementen 111, 112 durch Scharniere 3 montiert ist;

Fig. 3

das Möbelstück 10 von Fig. 2 mit ausgezogenen Türelementen 111, 112, von denen das erste Türelement 111 auf einer Seite gelenkig mit dem Montageprofil 85 und auf der anderen Seite gelenkig mit dem zweiten Türelement 112 verbunden ist, welches frontseitig mittels eines Laufwerks 6 entlang einer Führungsschiene 83 verschiebbar gehalten ist;

Fig. 4

die Verschiebevorrichtung 1 von Fig. 2 und Fig. 3 mit invertierter Ausrichtung des Hebelwerks 5 mit den ersten und zweiten Hebeleinheiten 51, 52, die mit den Haltevorrichtungen 84A, 84B verbunden sind und mit den dritten und vierten Hebeleinheiten 53, 54, die mit dem Montageprofil 85 verbunden sind;

Fig. 5a

die mit dem zweiten Verbindungssteg 58B verbundenen und axial dazu ausgerichteten dritten und vierten Hebeleinheiten 53 und 54 des Hebelwerks 5 von Fig. 2;

Fig. 5b

die mit dem ersten Verbindungssteg 58A und dem Mittelsteg 55 verbundenen und axial dazu ausgerichteten ersten und zweiten Hebeleinheiten 51, 52 des Hebelwerks 5 von Fig. 2;

Fig. 5c

die mit dem ersten Verbindungssteg 58A und dem Mittelsteg 55 verbundenen und axial dazu ausgerichteten ersten und zweiten Hebeleinheiten 51, 52 bei teilweise geöffnetem Hebelwerk 5;

Fig. 5d

eine Detaildarstellung des oberen Teils des Mittelstegs 552 und der Hebelelemente 511, 512 von Fig. 5c, die durch das obere zentrale Hebelgelenk 563 miteinander verbunden sind;

Fig. 5e

eine Detaildarstellung des unteren Teils des ersten Verbindungsstegs 58A und der durch das Hebelgelenk 564 mit einer Profilklinge 581 verbundenen Hebelelementen 521, 522 von Fig. 5c;

Fig. 5f

die vollständig gefaltete Verschiebevorrichtung 1 von Fig. 2;

Fig. 6a

das obere Ende der Verschiebevorrichtung 1 von Fig. 5f;

Fig. 6b

eine Detaildarstellung der Verschiebevorrichtung 1 von Fig. 6a;

Fig. 7a

das Hebelwerk 5 von Fig. 4 in einer vorzugsweisen Ausgestaltung;

Fig. 7b

das Hebelwerk 5 von Fig. 7a ergänzt mit zwei Symmetriervorrichtungen 7;

Fig. 8a

den unteren Teil des Hebelwerks 5 von Fig. 7a mit zweiten und vierten Hebeleinheiten 52 und 54, die je mit einer Justiervorrichtung 59 versehen sind;

Fig. 8b

in vergrösserter Darstellung die zweite Hebeleinheit 52 von Fig. 8a mit der Justiervorrichtung 59;

Fig. 9a

einen Teil einer der Hebeleinheiten 51, 52, 53, 54 mit einer eingesetzten Justiervorrichtung 59, die einen verschiebbaren und justierbaren Lagerblock 591 aufweist, von dem eine Gelenkwelle 595 eines zugehörigen Hebelgelenks gehalten wird;

Fig. 9b

die Justiervorrichtung 59 von Fig. 9a in einem Längsschnitt;

Fig. 9c

die mehrteilige Gelenkwelle 595 von Fig. 9a;

Fig. 10a

eine Verschiebevorrichtung 1 mit dem zusammengefalteten Hebelwerk von Fig. 7a; und

Fig. 10b

die Verschiebevorrichtung 1 von Fig. 10a ohne die Verbindungsstege 58A, 58B.

The invention is explained in more detail below with reference to drawings. This shows:

Fig. 1

a piece of furniture 10 with a door 11 held by a mounting profile 85 before assembly of a displacement device 1 according to the invention;

Fig. 2

a piece of furniture 10 with a displacement device 1 according to the invention, which has a lever mechanism 5 with four lever units 51, 52, 53, 54, which is connected on the one hand to holding devices 84A, 84B and on the other hand to a mounting profile 85, on which a door 11 with two door elements 111 , 112 is mounted by hinges 3;

Fig. 3

the piece of furniture 10 from Fig. 2 with extended door elements 111, 112, of which the first door element 111 is articulated on one side to the mounting profile 85 and on the other side is articulated to the second door element 112, which is held at the front by means of a drive 6 so that it can move along a guide rail 83;

Fig. 4

the displacement device 1 of Fig. 2 and Fig. 3 with inverted alignment of the lever mechanism 5 with the first and second lever units 51, 52, which are connected to the holding devices 84A, 84B, and with the third and fourth lever units 53, 54, which are connected to the mounting profile 85;

Fig. 5a

the third and fourth lever units 53 and 54 of the lever mechanism 5 connected to the second connecting web 58B and aligned axially therewith Fig. 2 ;

Fig. 5b

the first and second lever units 51, 52 of the lever mechanism 5, which are connected to the first connecting web 58A and the central web 55 and are axially aligned therewith Fig. 2 ;

Fig. 5c

the first and second lever units 51, 52 connected to the first connecting web 58A and the central web 55 and aligned axially therewith with the lever mechanism 5 partially open;

Fig. 5d

a detailed view of the upper part of the central web 552 and the lever elements 511, 512 of Fig. 5c , which are connected to each other by the upper central lever joint 563;

Fig. 5e

a detailed representation of the lower part of the first connecting web 58A and the lever elements 521, 522 connected to a profile blade 581 by the lever joint 564 Fig. 5c ;

Fig. 5f

the fully folded displacement device 1 from Fig. 2 ;

Fig. 6a

the upper end of the displacement device 1 from Fig. 5f ;

Fig. 6b

a detailed representation of the displacement device 1 from Fig. 6a ;

Fig. 7a

the lever mechanism 5 of Fig. 4 in a preferred embodiment;

Fig. 7b

the lever mechanism 5 of Fig. 7a supplemented with two balancing devices 7;

Fig. 8a

the lower part of the lever mechanism 5 from Fig. 7a with second and fourth lever units 52 and 54, each of which is provided with an adjusting device 59;

Fig. 8b

an enlarged view of the second lever unit 52 from Fig. 8a with the adjusting device 59;

Fig. 9a

a part of one of the lever units 51, 52, 53, 54 with an inserted adjusting device 59, which has a displaceable and adjustable bearing block 591, by which a cardan shaft 595 of an associated lever joint is held;

Fig. 9b

the adjusting device 59 from Fig. 9a in a longitudinal section;

Fig. 9c

the multi-part drive shaft 595 from Fig. 9a ;

Fig. 10a

a displacement device 1 with the folded lever mechanism Fig. 7a ; and

Fig. 10b

the displacement device 1 of Fig. 10a without the connecting webs 58A, 58B.

Fig. 1 shows a piece of furniture 10 with a door 11 held by a mounting profile 85 before the installation of a displacement device 1 according to the invention. The door 11 is approximately halfway retracted into a door compartment 14, which is delimited by an outer wall 12 and an intermediate wall (remote) of the piece of furniture 10 . The mounting profile 85 is rotatably connected to the door 11 with three hinges 3, so that it can be pulled out of the door compartment 14 and rotated to cover an opening in the piece of furniture 10.

The mounting profile 85 is guided displaceably along a displacement axis y within the door compartment 14 by means of drives 88 (shown symbolically) by an upper and a lower holding rail 81 and 82, respectively. Weight forces of the door 11 are absorbed by the holding rails 81, 82. However Tilting moments t of the door 11, which cause an inclination, cannot be compensated for by the holding rail 81, 82 and drives. The mounting profile 85 is therefore connected in a further assembly step to a displacement device 1 according to the invention, as shown, for example, in Fig. 2 or in Fig. 7a is shown. By means of the displacement device 1 according to the invention, the mounting profile 85 and thus the door 11 are always precisely held in a vertical orientation over the entire displacement range. Any misalignments can be easily corrected. The displacement device 1 according to the invention can be achieved by using a symmetrizing device 7 (see Fig. 7b ) can also be installed easily and precisely.

Fig. 2 shows parts of the furniture from Fig. 1 with a two-part door or folding sliding door 11 with a first door element 111, which is guided with the mounting profile 85 along the holding rails 81, 82 and is connected to a second door element 112 by hinges 30. The second door element 112, which is retracted into the door compartment 114 at the front, is connected at the front to a guide drive 6 (shown symbolically), which is guided in a guide rail 83. The guide rail 83 has a first rail part 831 that runs parallel to the front of the piece of furniture 10 and a second rail part 832 that leads into the door compartment 14. The two rail parts 831, 832 are connected to one another by a curved piece 833. The guide drive 6 can therefore move over the entire area of the guide rail 83. After extending and unfolding the folding sliding door 11, the drive 6 moves ahead with the front of the second door element 112.

The piece of furniture 10 is now equipped with a displacement device 1 according to the invention, which includes a lever mechanism 5.

In Fig. 2 the folding sliding door 11 is almost completely retracted into the door compartment 14 and is only held on one side by the displacement device 1 and by the drives of the running rails 81, 82 and the guide rail 83. The door therefore has a strong tendency to tip forward, which is why if the displacement device 1 is not optimally adjusted, the door 11 will be misaligned.

To compensate for this inclination, in a preferred embodiment, a bearing element 9 is provided in the area of the front end of the door compartment 14, on which the first and / or the second door element 111, 112 can be supported. Preferably, the door elements 111, 112 are released from the bearing element 9 before they are rotated in front of the opening of the piece of furniture 10. A bearing roller 9, for example, which is held by a bearing axle 99, can be used as a bearing element. Preferably, several bearing elements are provided so that the load is distributed. It is also possible to combine different bearing elements, e.g. the combination of a roller bearing and a plain bearing.

In a preferred embodiment, however, the misalignments are corrected by adjusting or adjusting the lever mechanism 5, as described below.

The lever mechanism 5 comprises first and second lever units 51, 52, which are articulated to one another on the one hand by a rod-shaped central web 55 and on the other hand by a first connecting web 58A, as well as third and fourth lever units 53, 54, which are connected on the one hand by the central web 55 and on the other hand are connected to one another in an articulated manner by a second connecting web 58B.

At the connection points of the resulting polygonal joint, lever joints 561, 562, 563, 564, 565, 566 are provided which allow the mutual rotation of the interconnected elements. The two lever joints 565, 566 are provided on the central web 55, each of which is connected to two lever units 51, 53 or 52, 54. Alternatively, a lever joint 565, 566 can also be provided on the central web 55 for each of the lever units 51, 53 or 52, 54.

The first connecting web 58A is connected in one piece or detachably to holding devices 84A, 84B, which are firmly mounted on the back, for example on the rear wall or a side wall of the piece of furniture 10. The second connecting web 58B is connected in one piece or detachably to the mounting profile 85, which is connected to the folding sliding door 11 via hinges 3.

This in Fig. 4 The lever mechanism 5 shown in more detail forms two mirror-symmetrical parallelograms which carry out the same movements during the retraction and extension of the door 11. The lever units 51, 53, 52, 54 each have a first end piece E11; E31; E31; E41 and a second end piece E12; E32; E32; E42 on.

When the door 11 is pushed in, the parts of the lever mechanism 5, in particular the lower and upper lever units 53, 54; 52, 54, shifted into one another and aligned parallel to one another. In preferred embodiments, the lever units 53, 54; 52, 54 and the connecting webs 58A, 58B shifted into one another. In a preferred embodiment, the parts of the lever mechanism 5 can also be parallel to one another aligned in the mounting profile 85, whereby the space requirement is minimized.

Fig. 3 shows the piece of furniture 10 from Fig. 2 with extended but not yet unfolded door elements 111, 112, of which the first door element 111 is articulated on one side to the mounting profile 85 and on the other side is articulated to the second door element 112, which can be moved along the guide rail 83 on the front by means of the guide drive 6 is held. The door 11 was grasped on a handle 112 and pulled out of the door compartment 114. During this process, the lever units 51, 52, 53, 54 and the center bar 55 were raised. Additional force was therefore required to pull out the door elements 111, 112. The insertion of the door elements 111, 112 is now supported by the weight of the lever elements 51, 52, 53, 54 and the central web 55. However, if the pulling out of the door elements 111, 112 is to be supported by the weight of the lever elements 51, 52, 53, 54 and the central web 55, the lever mechanism 5 is inverted, as shown in Fig. 4 is shown.

Fig. 4 shows the displacement device 1 of Fig. 2 and Fig. 3 with inverted orientation of the lever mechanism 5 in a larger view, in which the design of the parts of the lever mechanism can be seen.

It is shown that lever units 51, 53; 52, 54 each have two plate-shaped lever elements 511, 512; 531, 532; 521, 522; 541, 542, which are connected by the first and second peripheral upper lever joints 561, 563; the first and second peripheral lower lever joints 562, 564 and the upper and lower central lever joints 565, 566 are held at a designated distance from one another.

The central web 55 has a U-profile with two legs which are open in the direction of the holding devices 84A, 84B or in the direction of the first connecting web 58A. The first connecting web 58A, on the other hand, has a profile blade 581, which is directed against the central web 55 and can enter between the legs of the central web 55. The profile blade 581 preferably has recesses into which cardan shafts can enter.

The second connecting web 58B, which is connected to the central web 55 by the third and fourth lever units 53 and 54, has a U-profile that is open towards the central web 55 and can accommodate the entire folded lever mechanism 5.

The distance between the plate-shaped lever elements 511, 512; 521, 522 of the first and second lever units 51, 52, which connect the central web 55 and the first connecting web 58A, is smaller than the distance between the side plates of the U-profile of the central web 55 but greater than the width of the profile blade 581. The inside plate-shaped lever elements 511, 512 held in the U-profile of the central web 55; 521, 522 can therefore be screwed into the U-profile of the central web 55 and at the same time also accommodate the profile blade 581 of the connecting web 58A, as shown in Fig. 5b is shown.

The distance between the plate-shaped lever elements 531, 532; 541, 542 of the third and fourth lever units 53, 54, which face the mounting profile 85, is larger than the width of the U-profile-shaped center web 55, so that the lever elements 531, 532; mounted on the outside of the center web 55; 541, 542 can accommodate the middle web 55 in between.

At the same time, the distance between the plate-shaped lever elements 531, 532; 541, 542 of the third and fourth lever units 53, 54 are smaller than the width of the second connecting web 58B, so that they can be screwed downwards or upwards into the U-profile-shaped second connecting web 58B, as shown in Fig. 5a is shown. With the plate-shaped lever elements 531, 532; 541, 542 of the third and fourth lever units 53, 54 can simultaneously hold the lever assembly held between them Fig. 5b be screwed into the U-profile-shaped second connecting web 58B. During this process, the first connecting web 58A is also inserted into the second connecting web 58B.

Fig. 5a shows the lever units 53 and 54 of the lever mechanism 5 of which are connected to the U-profile-shaped second connecting web 58B and are axially aligned therewith Fig. 4 .

Fig. 5b shows the lever units 51, 52 of the lever mechanism 5 of which are connected to the first connecting web 58A and the central web 55 and are axially aligned therewith Fig. 4 .

Fig. 5c shows the lever units 51, 52 connected on the one hand to the first connecting web 58A and on the other hand to the central web 55 and aligned axially therewith with the lever mechanism 5 partially open.

Fig. 5d shows a detailed view of the upper part of the central web 552 and the lever units 511, 512 of Fig. 5c , which are connected to each other by the upper central lever joint 563;

Fig. 5e shows a detailed representation of the lower part of the first connecting web 58A and the lever units 521, 522 connected to the profile blade 581 by the first peripheral lower lever joint 564 Fig. 5c .

Fig. 5f shows the fully folded displacement device 1 of Fig. 4 .

Fig. 6a shows the upper end of the fully folded displacement device 1 of Fig. 5f . It can be seen that practically the entire lever mechanism is accommodated by the mounting profile 85 and therefore practically no additional space is required for the lever mechanism 5.

Fig. 6b shows a detailed representation of the displacement device 1 from Fig. 6a . It is shown that in the second connecting web 58B held by the mounting profile 85, the lever elements 531, 532 of the lever unit 53 and between these the central web 55 are accommodated, in which the lever elements 511, 512 of the lever unit 51 and in between the profile blade 581 of the first connecting web 58A are included.

Fig. 7a shows the lever mechanism 5 of Fig. 4 in a preferred embodiment with U-profile-shaped connecting webs 58A, 58B and an H-profile-shaped center web 55 as well as with one-piece lever units 51, 52, 53, 54, each preferably having a U-profile-shaped cross section for receiving an adjusting device 59 is suitable. Adjusting devices 59 can be provided on all end pieces of all lever units 51, 52, 53, 54. The lever mechanism 5 can be adjusted particularly advantageously if an adjusting device 59 is provided on the end piece E21, E41 of the second lever unit 52 and/or the fourth lever unit 54 connected to the associated connecting web 58A, 58B. By actuating the adjusting device 59, the lever axes of the associated lever unit 52 or 54 can be moved relative to one another. The adjusting devices 59 are preferably adjusted in the folded state of the lever mechanism 5 in order to avoid misalignment of the door or folding sliding door 11 correct. The folded lever mechanism 5 with a view of the adjusting screws 59 is in Fig. 10a shown.

Fig. 7a also shows that the first and second lever units 51, 52 can be inserted into the H-profile of the central web 55 from one side and the third and fourth lever units 53, 54 from the other side. During this process, the first and second lever units 51, 52 and part of the central web 55 are inserted into the first connecting web 58A and the third and fourth lever units 53, 54 and a part of the central web 55 are inserted into the second connecting web 58B. The cardan shafts of the lever joints 561, 563, which connect the first lever unit 51 to the first connecting web 58A and the third lever unit 53 to the second connecting web 58B, are accommodated in receiving openings 550 which are provided in the central web 55.

The folded displacement device 1 with the folded lever mechanism 5 from Fig. 7a is almost completely accommodated by the mounting profile 85 and takes up little space.

Fig. 7b shows the lever mechanism 5 of Fig. 7a supplemented with two balancing devices 7. Since all parts of the lever mechanism 5 are coupled to one another, it would be sufficient to provide only one balancing device 7, for example to connect the second and fourth lever units 52, 54. However, if the balancing devices 7 are intended to accommodate larger loads, two of them may be used.

Each symmetry device 7 forms a 3-point connection with the lever mechanism 5. Two points are non-slidably connected to mutually corresponding or mirror-symmetrical lever units 51, 53 and 52, 54. The third point can be moved along the central web 55.

The symmetry device 7 comprises two symmetry levers 71, 72, which on the one hand are rotatably connected to one another by a sliding joint 73 and on the other hand through joints 711, 721 either to the first and third lever units 51, 53 or to the second and fourth lever units 52 or 54. The joints can be designed in the same way as the lever joints of the lever mechanism and typically include a cardan shaft which penetrates the corresponding levers or their end pieces. The sliding joint 73 is slidably mounted in a guide track 551 of the central web 55. The corresponding lever units 51, 53 and 52, 54 are therefore always held mirror-symmetrically by the symmetrizing device 7, ie with the same inclination to the central web 55. The second connecting web 58B can therefore easily be connected to the mounting profile 85 from Fig. 1 get connected. Corrections are unnecessary or reduced to a minimum. The sliding joint 73 includes, for example, a wheel with a circular wheel groove which is delimited by wheel flanges. The wheel is pierced centrally by a cardan shaft, which holds the facing ends of the symmetry levers 71, 72.

Fig. 7b shows that the guide track 551 has an inlet opening 5510, into which the sliding joint 73 is inserted in such a way that the ends of the guide track 551 adjoining the inlet opening 5510 can engage in the wheel groove as guide flanges. The sliding joint 73 is thus held in the guide track 551 and can only be moved axially along this guide track 551 or axially along the longitudinal axis x of the central web 55 (see Fig. 7a ). When the associated lever units 51, 53 or 52, 54 rotate, the symmetry levers 71, 72 thus rotate about the resulting symmetry axes or joint axes s1, s2, s3 of the joints 711, 721, 731.

As soon as a balancing device 7 is installed, all parts of the lever mechanism 5 are positively guided, which is why the first and second lever units 51, 52 are guided in mirror symmetry to the third and fourth lever units 53, 54 even if there is no guidance through the holding rails 81, 82. The precise positioning of the lever mechanism 5 for connection to the mounting profile 85 from Fig. 1 therefore occurs automatically.

Fig. 8a shows the lower part of the lever mechanism 5 of Fig. 7a with the second and fourth lever units 52 and 54, each of which is provided with an adjusting device 59. It can be seen that the first and second connecting webs 58A, 58B each have a U-profile that is open to one another. The central web 55 has an H-profile into which the second and fourth lever units 52, 54 can enter. The central web 55 can enter the U-profile of the facing connecting web 84A or 84B on both sides. It should be noted that space is kept free between the legs of the U-profiles of the connecting webs 84A, 84B and the lever units 52, 54 into which the side plates of the H-profile of the central web 55 can enter.

Fig. 8b shows an enlarged view of the second lever unit 52 from Fig. 8a with the adjusting device 59 provided on the end piece E21. The end piece E21 of the second lever unit 52 partially passes through an opening 585 in the first connecting web 58A, so that the adjusting device 59 is easily accessible for actuation.

The adjusting device 59 comprises a bearing block 591 which is displaceably mounted in the lever unit 52 along its longitudinal axis. The bearing block 591, which holds a cardan shaft 595 of the associated lever joint 562, is held rotatably and axially non-displaceably by means of an adjusting screw 593 adjustable. By rotating the adjusting screw 593, the bearing block 591 can therefore be moved along the longitudinal axis h of the lever unit 52. The joint shaft 595 determines the position of the axis of rotation, which is why the distance between the axes of rotation of the relevant lever unit 562 is changed by moving the bearing block 591. In this way, the inclination of the held door or folding sliding door 11 can be adjusted in a simple manner, especially in the critical end position of the mounting profile 85 with the lever mechanism 5 folded.

Fig. 9a shows a part of one of the lever units 51, 52, 53, 54 with an inserted adjusting device 59, which has the displaceable and adjustable bearing block 591, by which the joint shaft 595 of the associated lever joint 562 is held.

Fig. 9b shows the adjusting device 59 of Fig. 9a in a longitudinal section. By specifying the reference numbers 51, 52, 53, 54 it is made clear that the adjusting device 59 can be mounted at each end of each lever unit 51, 52, 53, 54. Preferably only one or two adjusting devices 59 are mounted. However, any number of adjustment devices 59 can be installed. In principle, the joint axes of the lever joints can also be moved and adjusted relative to one another in other ways. For example, the lever unit 52 can be designed in two parts and have overlapping elements that can be moved relative to one another and fixed at any position. Furthermore, the lever unit 52 can have two parts that are provided with threaded elements and connected to one another by a threaded rod. The distance between the lever axes can also be changed by turning the threaded rod. The use of this However, compact and easily accessible adjusting device 59 is particularly advantageous.

The bearing block 591 of the adjusting device 59 has a cross section that is adapted to the inner cross section of the lever unit 52, which has a U-profile with legs and leg feet directed towards one another. The bearing block 591 is thereby held in a form-fitting manner and can only be moved along the longitudinal axis h of the lever unit 52. The adjusting screw 593 is aligned coaxially to the longitudinal axis of the lever unit 52 and engages with the screw shaft in a screw channel 5911 of the bearing block 591 and can move it axially by rotating the adjusting screw 593. So that the cardan shaft 595, which is held in a bearing channel 5910, can now be moved with the bearing block 591, corresponding longitudinal openings 95 are provided in the legs of the U-profile-shaped lever unit 52. The longitudinal openings 590 run parallel to the longitudinal axis h of the lever unit 52 and thereby allow the displacement of the cardan shaft 595 and thus the axis of rotation of the lever joint 562.

The adjusting screw 593 is held by a holding block 592 in an axially non-displaceable but rotatable manner. The holding block 592 is also clamped within the inner cross section of the lever unit 52 by means of a grub screw 594.

Fig. 9c shows the multi-part drive shaft 595 from Fig. 9a , which has a cardan shaft screw 5951 and a cardan shaft nut 5952, which, when screwed together, form the cardan shaft 595, on which a joint bushing 5953 is rotatably mounted. The bearing block 591 is held by the joint bushing 5953 and can therefore rotate around the joint shaft 595 practically without friction.

Fig. 10a shows the displacement device 1 with the folded lever mechanism 5 from Fig. 7a and Fig. 10b shows the displacement device 1 of Fig. 10a without the connecting webs 58A, 58B. The first connecting web 58A is connected to the holding devices 84A, 84B, which are on the side wall or rear wall of the piece of furniture 10 Fig. 1 mounted or mountable. The second connecting web 58B is connected to the mounting profile 85 by an adapter 589. The mounting profile 85 can be moved along the adapter 589 and fixed, for example, by a screw.

List of reference symbols:

1

Displacement device

10, 10`

Piece of furniture, e.g. cupboard

11

Door, especially folding sliding door

111

first door element

112

second door element

113

Handle

12

Side wall

13

partition wall

14

door compartment

3

Hinges

5

Lever mechanism

51

first lever unit

511, 512

Lever elements of the first lever unit

E11, E12

End pieces of the first lever unit

52

second lever unit

521, 522

Lever elements of the second lever unit

E21, E22

End pieces of the second lever unit

53

third lever unit

531, 532

Lever elements third lever unit

E31, E32

End pieces of the third lever unit

54

fourth lever unit

541, 542

Lever elements of the fourth lever unit

E41, E42

End pieces of the fourth lever unit

55

Center bar

550

Receiving openings for the lever joints 561, 563

551

Guideway in end piece 559

5510

Entry opening

E51, E52

End pieces of the center bar

561, 562

first and second upper peripheral lever joint

563

upper central lever joint

564, 565

first and second lower peripheral lever joint

566

lower central lever joint

58A

first connecting bridge

581

profile blade

585

Window openings in the connecting webs 58A/B

589

adapter

58B

second connecting bridge

59

Adjustment device

590

Storage window

591

Bearing block

5910

Storage channel

5911

screw channel

592

Holding block

593

Adjusting screw

594

fixing screw

595

PTO shaft

5951

Drive shaft screw

5952

Drive shaft nut

5953

Joint bushing

6

Guide drive

7

Balancing device

71

first balancing lever

72

second balancing lever

73

Sliding joint

81

lower holding rail

82

upper holding rail

83

Guide rail

84

Holding device

84A

first holding device

84B

second holding device

85

Mounting profile

88

Support units in the holding rails 81, 82

9

Bearing element, bearing roller, plain bearing

99

Bearing axis for the bearing element

s1,s2,s3

Symmetry axes

e.g

Longitudinal axis of the central web 55

Claims (15)

1. Piece of furniture (10) with a one-part or multi-part door (11), which serves the closing of an opening of the piece of furniture (10) and which is connected by hinges (3) with an mounting profile (85), which is held displaceable within a door compartment (14) by a displacement device (1) between a first and a second end position,

   which displacement device (1) comprises a lever mechanism (5), which includes four lever units (51, 52, 53, 54) rotatable in a plane, a first connecting bar (58A) and a second connecting bar (58B) and a centre bar (55),

   which centre bar (55) is pivotally connected on a first side by a first lever unit (51) and a second lever unit (52), which are spaced apart and aligned parallel to each other, to the first connecting bar (58A), which is connected to at least one holding device (84A, 84B) mounted on the piece of furniture (10), and

   which centre bar (55) is pivotally connected on a second side by a third lever unit (53) and a fourth lever unit (54), which are spaced apart and aligned parallel to each other, to the second connecting bar (58B), which is connected to the mounting profile (85),

   wherein in the first end position of the mounting profile (85) the lever units (51, 53; 52, 54) are aligned at least approximately parallel to the first and second connecting bar (58A, 58B) and are at least partially countersunk into the centre bar (55), which centre bar (55) in that first end position of the mounting profile (85) is at least partially countersunk into at least one of the first connecting bars (58A, 58B).
2. Piece of furniture (10) according to claim 1, characterised in that the mounting profile (85) on the upper side or the bottom side is guided along rails (81, 82) and/or that the door (11) comprises a plurality of door elements (111, 112), of which one door element (112) is held by a carriage (6), that is displaceable along the guide rail (83), which includes a first rail part (831) which extends along the front side of the piece of furniture (10) and a second rail part (832) which extends inside the door compartment (14), which first and second rail parts (831, 832) are connected to each other by a rail curve (833).
3. Piece of furniture (10) according to claim 1 or 2, characterised in that at least one of the four lever units (51, 52, 53, 54) comprises two plate-shaped lever elements (511, 512; 521, 522; 531, 532; 541, 542), which are spaced apart from each other and are detachably connected to each other or are firmly connected to each other as legs of a U-profile.
4. Piece of furniture (10) according to one of the claims 1, 2 or 3, characterised in that the centre bar (55) has an L-profile, or a U-profile or an H-profile in cross-section.
5. Piece of furniture (10) according to one of the claims 1 - 4, characterised in

   a) that the first and the second lever units (51, 52) are at least partially rotatable into the centre bar (55), or

   b) that the third and the fourth lever units (53, 54) are at least partially rotatable into the centre bar (55), or

   c) that all lever units (51, 52, 53, 54) are at least partially rotatable into the centre bar (55).
6. Piece of furniture (10) according to one of the claims 1 - 5, characterised in that the first connecting bar (58A) has an L-profile or a U-profile, or that the second connecting bar (58B) has an L-profile or a U-profile, or that the first and the second connecting bar (58A, 58B) have an L-profile or a U-profile.
7. Piece of furniture (10) according to one of the claims 1 - 6, characterised in that,

   a) that the first and the second lever units (51, 52) are at least partially rotatable into the first connecting bar (58A), or

   b) that the third and the fourth lever units (53, 54) are at least partially rotatable into the second connecting bar (58A, 58B), or

   c) that the first and the second lever unit (51, 52) are at least partially rotatable into the first connecting bar (58A) and that the third and the fourth lever unit (53, 54) are at least partially rotatable into the second connecting bar (58A, 58B).
8. Piece of furniture (10) according to one of the claims 1 - 7, characterised in that,

   a) that the centre bar (55) is at least partially insertable into the first connecting bar (58A), or

   b) that the centre bar (55) is at least partially insertable into the second connecting bar (58B), or

   c) that the centre bar (55) is at least partially insertable into the first and the second connecting bar (58A, 58B).
9. Piece of furniture (10) according to one of the claims 1 - 8, characterised in that the first connecting bar (58A) is insertable into the second connecting bar (58B) or that the second connecting bar (58B) is insertable into the first connecting bar (58A).
10. Piece of furniture (10) according to one of the claims 1 - 9, characterised in that at least one bearing element (9), such as a roller or a sliding element, is provided in the area of the door compartment (14), on which the door (11) is supported or supportable.
11. Piece of furniture (10) according to one of the claims 1 - 10, characterised in that the first and the second lever unit (51, 52) are connected by lever joints (561, 565; 562, 566) on the one hand each with the first connecting bar (58A) and on the other hand each with the centre bar (55) and that the third and the fourth lever unit (53, 54) are connected by lever joints (561, 565; 562, 566) on the one hand each with the second connecting bar (58B) and on the other hand each with the centre bar (55).
12. Piece of furniture (10) according to claim 11, characterised in that the distance of the lever joints (561, 565; 562, 566; 563, 565; 564, 566) and thus the distance of the associated axes of rotation of at least one of the lever units (51, 52, 53, 54) is adjustable or in that the distance of the lever joints (563, 565; 564, 566) and thus the distance of the associated axes of rotation of the third and the fourth lever unit (53, 54) is adjustable.
13. Piece of furniture (10) according to claim 11 or 12, characterised in that at least one of the lever units (51, 52, 53, 54) is provided with at least one adjusting device (59) by means of which the distance between two mutually corresponding lever joints (561, 565; 562, 566; 563, 565; 564, 566) of the related lever unit (51; 52; 53; 54) is adjustable.
14. Piece of furniture (10) according to claim 13, characterised in that the adjusting device (59) comprises a bearing block (591) mounted in the associated lever unit (51, 52, 53, 54) so as to be displaceable along the longitudinal axis thereof, which bearing block (591) is adjustable by means of an adjusting screw (593) held rotatably and axially non-displaceable and which holds an articulated shaft (595) of the associated lever joint (561, 565; 562, 566; 563, 565; 564, 566).
15. Piece of furniture (10) according to one of the claims 1 - 14, characterised in that the first lever unit (51) is pivotally connected to a first balancing lever (71) and the third lever unit (53) is pivotally connected to a second balancing lever (72) of a balancing device (7) and that the first and second balancing levers (71, 72) are pivotally connected at the ends facing each other to a sliding joint (75), which is mounted in a guide track (551) of the centre bar (55) so as to be axially displaceable along the centre bar (55) or the second lever unit (52) is pivotally connected to the first balancing lever (71) and the fourth lever unit (54) is pivotally connected to the second balancing lever (72) and in that the first and second balancing levers (71, 72) are pivotally connected at the ends facing one another, 72) are pivotally connected at the ends facing each other with a sliding joint (7573) which is mounted in a guide track (551) of the centre bar (55) so as to be axially displaceable along the centre bar (55).

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