EP1769705B1 - Sofa-bed with a piece of furniture - Google Patents

Description

The invention relates to a sofa bed for optional use as a sitting or lying furniture, with a seat cushion as a sitting or lying surface, according to the preamble of claim 1.

There are already a variety of sofa beds of this type known, for example DE 42 23 130 A1 which are convertible from a sitting to a reclining chair and vice versa. Convertible seating and reclining furniture, which are suitable for sitting as well as for lying and sleeping, enjoy increasing popularity among buyers who own small apartments, since they can set up space by using convertible furniture. In larger apartments and hotels, convertible seating is also in demand, as there is always a guest bed or an extra bed available in this way.

Known sitting and lying furniture, in particular sofa beds, usually have a plurality for a sitting and lying use against each other movable upholstery, which can be transferred from a sitting in a lying position and vice versa. The upholstery in most embodiments are movably guided on a base frame and hinged together, so that the upholstery comfortable and without much effort, against each other and / or against the base frame are movable.

Such solutions have the disadvantage that the sofa bed on the one hand must be designed very expensive, as far as the convertibility, and on the other hand, the transformation of the sofa bed is often complicated and uncomfortable for the user. Such bed sofas are very expensive due to complex fittings for the movement of the upholstery and often require a lot of space, so that at each transformation adjacent arranged furniture crazy or the bed sofa in turn has to be moved away from an adjacent room wall.

There are also known less expensive solutions. For example, the utility model discloses DE 69 42 004 U a combination cabinet with a door provided with upper area and provided with a near-floor part of free space in which a couch, which is equipped on inner legs with rollers, with its longitudinal side by a part of its width can be inserted, the space below of a Room floor and on the other three sides of the furniture is limited. The seat cushion of the lounger can be used in the extended state as a lying surface and protrudes in the inserted state so far in the room that the seat cushion can serve as a bench.

The invention has for its object to propose a convertible sofa bed with a movable on casters seat cushion, which is slidable in a seat cushion towards the opening of a piece of furniture, even if the furniture has a bottom.

This object is achieved by a sofa bed according to the invention, for optional use as a sitting or lying furniture, with the features of claim 1. Further advantageous embodiments can be found in the dependent claims.

The sofa bed according to the invention comprises a piece of furniture with a bottom, over which the seat cushion is slidable and rear, on a rear, the furniture facing edge of the seat cushion movably mounted rollers, which moved by inserting the seat cushion of an occupied area of the bottom of the furniture away are. The casters are automatically moved upward or forward away from the area occupied by the floor of the cabinet as soon as the rear casters touch the floor of the cabinet. For this purpose, the rollers are movably guided in a suitable manner on the seat cushion, so that they can move along a linear, curved or curved path to the bottom of the cabinet.

The sofa bed with its movable on casters seat cushion as a seat or bed has, for example, as a furniture box-shaped, the seat cushion open towards the sofa bed superstructure, in which the seat cushion is at least partially inserted. In the inserted state, a seat cushion facing opening of the sofa bed superstructure overlaps the seat cushion of the sofa bed on its side facing the sofa bed superstructure and covers a rear part of a lying surface of the seat cushion. By inserting the seat cushion in the sofa bed superstructure, the lying surface is reduced to a seat, which is a front part of the bed. By extending the seat cushion from the sofa bed superstructure, the seat surface of the seat cushion is adjustable in its seat depth and convertible to a lying surface. In the fully extended state, the sofa bed cover does not overlap the seat cushion, so that the entire seat cushion can be used as a lying surface.

The sofa bed superstructure or generally the furniture of the sofa bed has a floor above a room or other floor on which the seat cushion is movable. The floor of the piece of furniture, so to speak, forms a step that the seat cushion has to overcome when it is pushed into the furniture. The seat cushion should remain in its horizontal position, the rear wheels of the seat cushion must dodge the bottom of the furniture. Above the Seat cushion above the floor, the sofa bed superstructure may have a shelf. The shelf provides space for storing or placing objects, such as picture frames, flower vines or the like. It is not necessary to clear away items that are on the shelf of the sofa bed superstructure when the sofa bed is being converted from a couch to a chair or vice versa. If the seat cushion pulled in front of the sofa bed superstructure, the shelf can be used as a table, if one faces the sofa bed superstructure on the rear, the sofa bed facing area of the seat cushion. This also applies to furniture in general, if it has a worktop or the like. Over the opening into which the seat cushion is slid. The seat cushion may be loosely attached to the furniture or connected to the furniture; even a detachable coupling is not excluded. In this case, the seat cushion on the furniture movable, in particular displaced out or be free to move. The rear casters of the sofa bed are designed to increase the ease of use and facilitate the movement of the seat cushion. They carry the weight of the seat cushion in whole or in part, whereby the seat cushion with little effort in the opening of the furniture can be inserted or pulled out and moved in a room.

The seat cushion may also have on a side facing away from the furniture additional front wheels, which simplifies the displacement of the seat cushion. The casters of the seat cushion are based on a floor of the room and are arranged on an underside of the seat cushion, preferably at the rear and at the front edge of the seat cushion. The seat cushion can be fully supported by the rollers so that elaborate fittings for coupling with the Furniture can be dispensed with. Another advantage is that the seat cushion is thus freely movable relative to the furniture and thus easily removable from the furniture, which facilitates, for example, a cleaning of the floor.

An advantageous embodiment of the invention provides that arranged on the rear edge of the seat cushion rear wheels are guided displaceably in the direction of displacement of the seat cushion on the seat cushion. For this purpose, the seat cushion on sliding guides, which extend from the rear edge of the seat cushion in the direction of its front edge. The slidably guided rear rollers ensure that the seat cushion remains movable by a length of the sliding guide of the rollers, if the rear rollers are stopped by an obstacle, in particular by the bottom of the cabinet. The rear casters are located on a rear, the rear edge of the seat cushion near the end of the sliding guides with pulled out of the furniture seat cushion. In this position, they support the seat cushion when using the sofa bed as a reclining furniture against tilting of the seat cushion safely. When inserting the seat cushion in the opening of the furniture, the rear wheels are increasingly guided by the rear edge of the seat cushion in the sliding guides forward, so that the rear edge of the seat cushion can be pushed over the bottom of the cabinet.

Advantageously, the seat cushion on a drive for the rear wheels, which move the rollers when removing the seat cushion from the furniture in the direction of the rear edge of the seat cushion and facilitate movement of the seat cushion away from the furniture. The drive for the rollers has an energy storage, which is charged during insertion of the seat cushion in the opening of the furniture with kinetic energy and stores them until the removal of the seat cushion from the opening of the furniture. As energy storage, for example, a spring element can be used, which is coupled to the rear wheels of the seat cushion.

The spring element is fastened with its ends to the seat cushion and to the rear rollers, so that the spring element is tensioned by sliding the rollers in the sliding guides in the direction of the front edge of the seat cushion. By means of the energy stored in the energy storage, the drive supports the user when removing the seat cushion from the furniture by he moves the rear wheels from the front end of the sliding guides to the rear end thereof.

When inserting the seat cushion in the furniture, the rear wheels are successively moved toward the front edge of the seat cushion until the rollers reach a front, the rear end opposite end of the sliding guides. In this position they are positioned at a rear edge of the seat and prevents tilting of the seat cushion under load of the seat of the sofa bed when using the sofa bed as a chair.

In another preferred embodiment of the invention, arranged on the rear, the furniture facing edge of the seat cushion, rear wheels pivotally upwards to the seat cushion. For this purpose, the rear rollers on a pivot joint, the pivot axis is aligned parallel to the rear edge of the seat cushion. The pivoting rear casters are pivoted automatically when stopped by an obstacle, such as the floor of the cabinet. The rollers are moved during insertion of the seat cushion of an area occupied by the floor upwards, whereby the seat cushion is slid over the bottom of the furniture.

The rear wheels are inclined in the retracted state of the seat cushion in the direction of a front edge of the seat cushion and can be supported on the floor of the furniture. For this purpose, a front pivot stop is provided on the side facing away from the rear edge of the seat poster on the rear roller bearing fitting, which adjusts an inclination of the roller according to a height of the top of the floor, so that the rear roller can be supported on the floor of the furniture , It is also possible to pivot the rear roller so far that it has a distance to the top of the furniture floor, if extra support rollers, glides or the like. Provided at the rear edge of the seat cushion, which are supported on the floor of the furniture to support.

The rear swivel casters can protrude perpendicularly or rearwardly inclined from the underside of the seat cushion when pulled out of the opening of the furniture out seat cushion. For this purpose, on the fitting for the rear wheels, a rear pivot stop on the rear edge associated side for supporting the rollers may be provided, on which the roller is supported laterally and determines the inclination of the roller or a lock for the inclined or vertical position of the caster. The rear roller may also be connected to a drive coupled to an energy storage device to assist the user in undressing the seat cushion or supporting the rear wheels from the upwardly pivoted position, similar to the sliding guide of the rear roller described above automatically swing down to the floor of the room.

In a further advantageous embodiment of the invention, a front roller attached to a front edge of the seat cushion has a brake for locking the roller. The brake allows a determination of the seat cushion in a use position, thereby preventing unintentional shifting of the seat cushion. In particular, it serves to secure the seat cushion when used as a chair with tensioned spring element against unintentional process, so that the stored energy is maintained. When used as a seat or reclining furniture, it also reduces the risk that the seat cushion when moving up, sitting down or lying down moves away from the user and the user injured by fall.

A preferred embodiment of the invention provides that the front roller is a castor, which is guided horizontally rotatable on the seat cushion. The castor acts similar to the swivel castor of a shopping cart and allows a change in the direction of displacement of the seat cushion without much effort.

According to another advantageous embodiment of the invention, the opening of the furniture is closed by a back cushion with inserted seat cushion. Behind the back padding can above the seat cushion be limited by the furniture cavity available, which can be used as a storage box for storing bedding or the like.

A further preferred embodiment provides that the seat cushion and the furniture are separable and self-sufficient usable. Thus, for example, there is the possibility of the seat cushion and the furniture, for example, the sofa bed, separately set up in the room and use as separate pieces of furniture or to combine the seat cushion with the sofa bed space-saving. Moreover, it is possible to set up the seat cushion with respect to the sofa bed superstructure such that a user, as at a desk facing the sofa bed superstructure, can sit at the rear edge on the seat cushion and use the shelf plate of the sofa bed superstructure as a table.

The invention will be explained in more detail with reference to two embodiments shown in the drawing.

Figur 1

eine perspektivische Ansicht eines ersten Ausführungsbeispiels des erfindungsgemäßen Bettsofas;

Figur 2

eine Seitenansicht des Bettsofas gemäß Figur 1 in einer Gebrauchsstellung als Sitzmöbel;

Figur 3

eine Seitenansicht des Bettsofas gemäß Figur 1 in einer Gebrauchsstellung als Liegemöbel;

Figur 4

eine Draufsicht auf das Bettsofa gemäß Figur 2 im eingeschobenen Zustand;

Figur 5

eine Seitenansicht eines zweiten Ausführungsbeispiels des erfindungsgemäßen Bettsofas in einer Gebrauchsstellung als Liegemöbel; und

Figur 6

eine Seitenansicht des Bettsofas gemäß Figur 5 in einer Gebrauchsstellung als Sitzmöbel.

Show it:

FIG. 1

a perspective view of a first embodiment of the invention Betttsofas;

FIG. 2

a side view of the sofa bed according to FIG. 1 in a position of use as seating;

FIG. 3

a side view of the sofa bed according to FIG. 1 in a position of use as a reclining furniture;

FIG. 4

a plan view of the sofa bed according to FIG. 2 in the inserted state;

FIG. 5

a side view of a second embodiment of the invention Bettsofas in a position of use as a reclining furniture; and

FIG. 6

a side view of the sofa bed according to FIG. 5 in a position of use as seating.

The Figures 1-4 show a first embodiment of the sofa bed 1 according to the invention for optional use as lying or seating furniture, in different views and different positions of use. The sofa bed 1 is shown to simplify the drawing in all figures without back pad and without padding for the seat cushion. It is convertible from a sitting to a reclining chair and vice versa.

The sofa bed 1 essentially comprises a seat cushion 2 which is rectangular in plan view, for use as a sitting or lying surface, and a box-shaped sofa bed superstructure 3, to which the seat cushion 2 can be moved and from which the seat cushion 2 can be moved. The seat cushion 2 is, as in the FIGS. 1, 2 . 4 represented, at least partially inserted into the sofa bed superstructure 3, wherein a shelf plate 4 of the sofa bed 3 is located above the seat cushion 2 and when inserted into the sofa bed 3 seat cushion 2 covers a rear portion of the seat cushion 2. A lying surface 6 of the seat cushion 2 is reduced in its depth to a seat surface 8. The seat 8 connects to a front edge 7 of the seat cushion 2, which is arranged opposite the rear edge 5 of the seat cushion 2. A back cushion, not shown in the drawing, attached to the sofa bed 3 or loosely rest on the seat cushion 2 and can be supported on the back sofa bed 3, limits the seat 8 of the seat cushion 2 to the sofa bed 3 and allows a comfortable sitting of the user.

To move the seat cushion 2, the seat cushion 2 on an underside 9 front rollers 10, 10 'and rear roller 11, 11' on. The rear wheels 11, 11 'are at the rear edge 5 and the front rollers 10, 10' on front edge 7 of the seat cushion 2 is provided. The rollers 10, 10 ', 11, 11' carry the seat cushion 2 and stand on a not shown in the drawing room floor.

As front rollers 10, 10 'are provided steering rollers which are guided horizontally rotatably on the seat cushion 2 and a steering of the seat cushion 2 in the process with respect to the sofa bed superstructure 3, similar to a shopping cart, allow.

The rear wheels 11, 11 'are guided in sliding guides 12, 12' movable in the direction of the seat cushion 2 on the seat cushion 2. The sliding guides 12, 12 'extend from the rear edge 5 of the seat cushion 2 in the direction of its front edge 7 and end approximately in the middle between the edges 5, 7 of the seat cushion 2. The rollers 11, 11' are from a front, the rollers 10, 10 'near position at a front end 18 of the sliding guides 12, 12' in a rear, the front rollers 10, 10 'remote position at a rear end 19 of the sliding guide 12, 12' and vice versa displaced. Thus, for example, the roller 11 is in the use of the sofa bed 1 as a reclining furniture, as in the FIG. 3 shown, at the rear end 19 of the sliding guide 12 and thus at the rear edge 5 of the seat cushion 2 and supports the seat cushion 2 at its rear edge 5 to the floor of the room down from. It prevents tilting of the seat cushion 2 in this position when the lying surface 6 is loaded on the rear edge 5 of the seat cushion 2.

To convert the bed sofa 1 from a reclining furniture in a chair, the seat cushion 2 can be moved into the sofa bed 3 in, until the cover 4, the seat cushion 2 overlaps. In this position, back cushions, not shown in the drawing on the deck surface 6 of the seat cushion 2 are placed so that they are supported with a back on the shelf plate 4 of the sofa bed superstructure 3.

When inserting the seat cushion 2 into the sofa bed superstructure 3, the rear wheels 11, 11 'are automatically moved away from the rear edge 5 of the seat cushion 2 to the front end 18 of the sliding guides 12, 12' out. In this position, they supported the seat 8, which is part of the lying surface 6, on her the sofa bed superstructure 3 facing side. The displacement of the rollers 11, 11 'in their sliding guides 12, 12' takes place in that the rollers 11, 11 'are blocked by a bottom plate 13 of the sofa bed 3, when the seat cushion 2 is moved into the sofa bed 3 superstructure. The rollers 11, 11 'are thereby blocked by an end face 14 of the bottom plate 13, which points in the direction of the seat cushion 2, as a stop and abutment for the rollers 11, 11' during insertion of the seat cushion 2 acts in the seat cushion cover 3 and the rollers 11, 11 'stops. When moving the seat cushion 2 beyond this stop point, the rear wheels are shifted in their sliding guides 12, 12 '.

When taking off the seat cushion 2 from the sofa bed superstructure 3, the rear wheels 11, 11 ', as in the Figures 2 . 3 shown displaced from the front end 18 of the sliding guide 12 to the rear end 19. For this purpose, a drive 20 is provided on the seat cushion 2, which moves the rollers 11, 11 'when moving the seat cushion 2 away from the sofa bed superstructure 3 forcibly in the direction of the rear edge 5 of the seat cushion 2.

The drive 20 consists, as from FIG. 4 can be seen, essentially from a coil spring 21 which is designed as a tension spring and acts as an energy storage, and tension cables 22, 22 ', which connect the coil spring 21 with the rear wheels 11, 11'. The coil spring 21 is disposed in a center of the rear edge 5 of the seat cushion 2 and extends along the rear edge 5. The traction cables 22, 22 'extend from the rollers 11, 11', along the sliding guides 12, 12 'and are on rear edge 5 of the seat cushion 2 deflected by means of deflection rollers 23,23 'in the direction of the coil spring 21. You are with the coil spring 21 to the Deflection rollers 23, 23 'facing ends 24, 24' of the coil spring 21 is connected.

The acting as an energy storage coil spring 21 of the drive 20 is tensioned when inserting the seat cushion 2 in the sofa bed 3 by the traction cables 22, 22 'the ends 24, 24' of the coil spring 21 move away from each other in the longitudinal direction. The drive 20 moves due to the tensioned coil spring 21, the rear wheels 11, 11 'when removing the seat cushion 2 from the sofa bed 3 out to the rear end 19 of the sliding guides 12, 12', wherein the coil spring 21 is relaxed. To fix the seat cushion 2 in any position to the sofa bed superstructure 3, a brake 15 is provided on the front roller 10 '. By means of the brake 15, the front rollers 10, 10 'blocked and the seat cushion 2 are secured against unintentional displacement.

The bed sofa 3 of the sofa bed 1 is box-shaped. In this case, its shelf 4 is fixed to side parts 16, 16 'of the sofa bed superstructure 3, which are firmly connected to the bottom plate 13 resting on the floor of the room. The shelf 4 has a distance from the floor of the room, which corresponds approximately to twice the height of the seat cushion 2. When inserted into the sofa bed superstructure 3 seat cushion 2, a cavity 17, which is bounded horizontally by the lying surface 6 of the seat cushion 2 and the shelf 4 of the sofa bed 3 and vertically from the side walls 16, 16 'of the sofa bed 3, as a bed box for storing Blankets, pillows or the like can be used. The cavity 17 is open towards the front in the direction of the seat surface 8 of the seat cushion 2 and can be closed by the back pad, not shown in the drawing.

The sofa bed 1 according to the invention shown in the drawing has no coupling between the seat cushion 2 and the sofa bed superstructure 3. Due to the lack of coupling, the seat cushion 2 is not guided on the sofa bed superstructure 3 and thus freely movable. Thus, the seat cushion 2 completely pulled out of the sofa bed superstructure 3 and, for example, freely in the room and in any Orientation to the sofa bed superstructure 3 are positioned. In this case, the seat cushion 2 is easily displaced, in particular also pivotable, since the front rollers 10, 10 'are formed as castors. So it is also possible, the bed sofa 3 and the seat cushion 2 separate furniture separate from each other in the room set up and use independently.

The FIGS. 5, 6 show a second embodiment of the invention Bettsofas 1, which corresponds to the first embodiment except for the formation of the rear rollers 11, 11 'and their attachment to the seat cushion 2. In contrast to that in the Figures 2 . 3 shown sofa bed 1, the rollers 11, 11 'is not slidably guided in the direction of displacement of the seat cushion 2, but mounted pivotally upwardly on the seat cushion 2. This in FIG. 5 Sofa bed 1 shown with extended seat cushion 2 has for this purpose a pivot fitting 25 with a pivot axis 28 which is aligned parallel to the rear edge 5 of the seat cushion 2. The pivotally mounted rear rollers 11, 11 'are automatically pivoted upwardly when stopped by the floor 13 of the sofa bed superstructure 3. The rollers 11, 11 'during insertion of the seat cushion 2 are moved away from the area occupied by the bottom 13 upwards away, so that the seat cushion 2 on the bottom 13 is slidable.

FIG. 6 shows the sofa bed 1 with inserted seat cushion 2, the rear edge 5 is pushed over the bottom 13 of the sofa bed superstructure 3. The rear wheels 11, 11 'are inclined in the inserted state of the seat cushion 2 in the direction of a front edge 7 of the seat cushion 2 and are based on the floor 13 of the sofa bed superstructure 3 from. For this purpose, on the pivot fitting 25 on the rear edge 5 of the seat post 2 side facing away from a front pivot stop 26 is provided on which the roller 11 abuts inclined. The pivot stop 26 adjusts the inclination of the rollers 11 according to the height of a top 29 of the bottom 13, whereby the roller 11 is supported on the floor 13 of the sofa bed 3.

The casters 11, 11 'are in the seat cushion 2 pulled out of the opening of the sofa bed superstructure 3, as in FIG FIG. 5 shown, inclined backwards from the bottom 9 of the seat cushion 2 from. For this purpose, a rear, the inclination of the roller 11-determining pivot stop 27 is disposed on the pivot fitting 25 on the rear edge 5 side.

Claims (8)

1. Sofa bed (1) for the selective use as an article of furniture on which to sit or lie, said sofa bed having a seat cushion (2) as a sitting or lying surface, which seat cushion is displaceable on rollers (10, 11), and having a piece of furniture (3) which includes an opening into which the seat cushion (2) can be at least partially inserted, the piece of furniture (3) having a base (13) over which the seat cushion (2) can be pushed, characterised in that rear rollers (11) are displaceably fitted on the seat cushion (2) on a rear edge (5) of the seat cushion (2) facing the piece of furniture (3), and said rollers can be moved away from a region occupied by the base (13) of the piece of furniture (3) by the insertion of the seat cushion (2).
2. Sofa bed according to claim 1, characterised in that rear rollers (11), disposed on the rear edge (5) of the seat cushion (2) facing the piece of furniture (3), are guided on the seat cushion (2) so as to be movable in a slide guide (12), in the direction of displacement of the seat cushion (2).
3. Sofa bed according to claim 2, characterised in that the seat cushion (2) has a drive means (20) for the rear roller (11), which drive means automatically moves the roller (11), when the seat cushion (2) is pulled out from the sofa bed superstructure (3), in the direction of the rear edge (5) of the seat cushion (2).
4. Sofa bed according to claim 1, characterised in that rear rollers (11), disposed on the rear edge (5) of the seat cushion (2) facing the piece of furniture (3), are mounted in an upwardly pivotable manner on the seat cushion (2).
5. Sofa bed according to claim 1, characterised in that a front roller (10), secured on a front edge (7) of the seat cushion (2), has a brake (15) for locking the roller (10).
6. Sofa bed according to claim 5, characterised in that the front roller (10) is a steering roller, which is guided in a horizontally rotatable manner on the seat cushion (2).
7. Sofa bed according to claim 1, characterised in that the opening of the piece of furniture (3) can be closed by a rear cushion when the seat cushion (2) has been inserted.
8. Sofa bed according to one of the preceding claims, characterised in that the seat cushion (2) and the piece of furniture (3) can be separated from each other and used independently.

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