EP3998908A1

EP3998908A1 - Piece of furniture and method for assembling a piece of furniture

Info

Publication number: EP3998908A1
Application number: EP20753291.2A
Authority: EP
Inventors: Steffen Grathwol
Original assignee: Hettich Franke GmbH and Co KG
Current assignee: Hettich Franke GmbH and Co KG
Priority date: 2019-07-16
Filing date: 2020-07-01
Publication date: 2022-05-25
Anticipated expiration: 2040-07-01
Also published as: ES2952591T3; PL3998908T3; CN114007466A; US11800934B2; US20220248857A1; EP3998908B1; DE102019119307A1; WO2021008869A1

Abstract

The invention relates to a piece of furniture (100), in particular a piece of seating furniture, comprising a base part (104) on which a movable furniture part (101, 102, 103) is pivotably mounted via at least one pivot fitting (1), wherein the at least one pivot fitting (1) is fixed to the base part (104) by a first lever (2) and is fixed to the movable furniture part (101, 102, 103) by a second lever (3) which is arranged pivotably with respect to the first lever (2), the second lever (3) being fixed to a molded body (4) having a plurality of hollow chambers (7), which molded body forms a core of the movable furniture part (101, 102, 103). The molded body can have in particular a recess for receiving the second lever. The invention furthermore relates to a method for assembling a piece of furniture.

Description

Furniture and method of assembling furniture

The present invention relates to furniture, in particular seating, with a base part on which a movable furniture part is pivotably mounted via at least one swivel fitting, the at least one swivel fitting being fixed to the base part with a first lever and a second to the first lever pivotably arranged lever is fixed on the movable furniture part, and method for assembling a piece of furniture.

DE 10 2015 113 749 A1 discloses a swivel fitting for upholstered furniture in which two levers are rotatably mounted relative to one another, the two levers being able to be continuously fixed in different angular positions relative to one another via a clamping mechanism. This enables flexible use of the swivel fitting for armrests, foot parts, side rests or other movable furniture parts.

Another swivel fitting is shown in DE 10 2017 1 10 253 A1, which also comprises two levers which can be rotated relative to one another and which can be fixed in different angular positions via a clamping mechanism for fixing the levers. The clamping mechanism comprises at least one pawl and a pinion. In such swivel fittings, the levers on the movable furniture part are connected to one another via a plate, for example a wooden board, and then surrounded with upholstery foam, which is arranged under a cover. The production of such upholstered movable furniture parts requires many work steps, and the use of different materials is disadvantageous in terms of subsequent disposal.

Movable furniture parts according to the known prior art mostly consist of a wooden board as a support element for foams, a layer of wadding and cover materials. The pivot mounts are then screwed onto these wooden boards by means of screws on the drive-in nuts previously inserted in the wooden board. On the one hand, this known structure is inflexible with regard to the design of the furniture part and, on the other hand, it requires very complex manufacturing steps such as gluing foams.

It is therefore an object of the present invention to provide a piece of furniture with a

To create swivel fitting in which the movable furniture part is effectively can be animalized. Furthermore, an optimized method for assembling a furniture is to be provided. Another object is to make the structure and manufacture of a furniture part simpler, more flexible and suitable for simplified assembly.

This object is achieved with a piece of furniture with the features of claim 1 and a method with the features of claim 17.

In the furniture according to the invention, the second lever of the pivot fitting is fixed to a molded body provided with a plurality of hollow chambers, which forms a core of the movable furniture part. This shaped body is pivotably mounted on one or more swivel fittings and, depending on the application, can have different shapes, with a low dead weight being present due to the provision of hollow chambers. This eliminates the need to build the core of the movable furniture part from a variety of different materials that have to be connected to one another. The shaped body can consist of a single material, in particular special plastic, with fillers also added to the plastic, such as lignocellulosic fibers, recycled fibers made of plastic or cotton or powdered substances.

A pocket for receiving at least one part of the second lever is preferably formed in the molded body. The second lever can then be partially or completely inserted into the pocket and is preferably fixed there by clamping or locking. As a result, the molded body can be mounted on the second lever without tools. For this purpose, corresponding clamping contours, such as a wedge-shaped clamping contour, or a bendable locking web with a projection which engages in a recess on the lever can be formed on the pocket. The connection can be designed to be either non-releasable or releasable, for example by the flexible locking web being lifted out of the positive engagement again by an unlocking lever.

The molded body preferably has a stiffening structure formed from webs, the webs surrounding the hollow chambers. The shaped body can be made in one piece or composed of several individual parts. The assembly of individual parts has the advantage that the molded body can be assembled in different lengths or widths depending on the application. The shaped body can be advantageous Have areas with a higher web density and areas with a lower web density. In particular, in the areas that are designed as a support surface for the head, arms or legs, greater resilience of the molded body can be achieved through a lower web density, which increases the support comfort. In contrast, in the areas in which the pockets for receiving at least part of the second Flebels are arranged, a higher web density for stiffening is very advantageous.

In a further embodiment, a slot is formed on the molded body through which the first fleece is passed. The slot can extend at a rounded edge of the shaped body over a predetermined angular range in order to be able to pivot the shaped body relative to the first bracket.

The shaped body preferably has a smooth surface on two opposite sides. This surface can serve as a support, preferably a different elasticity due to the shape of the molded body is present on the surfaces. One surface can be designed to be more elastic, that is to say it can deform more elastically than the other surface at a predetermined contact pressure. In this way, it can be determined which surface is used as a support surface and which surface is used as an elastic surface. This can be done by adapting the stiffening structure, which leads to greater rigidity on one side than on the opposite side.

The molded body or its individual parts are preferably produced by injection molding, extrusion or 3D printing. The proportion of the hollow chambers in the molded body based on the total volume can be over 50%, for example between 60% and 95%. As a result, the molded body can have a relatively low intrinsic weight and can already form the geometry that the movable furniture part should approximately assume. The molded body can directly form the movable furniture part, so be accessible from the outside Lich. Preferably, however, a flexible cover is applied to the molded body. Such a flexible cover can for example be a cover made of leather, a textile material or an elastic plastic, which forms the outer surface of the movable furniture part. A further component can optionally also be fixed to the molded body, such as a display with a screen, an operating unit and / or a control, for example if a medium or an application is in the movable furniture part. cation should be integrated. For this purpose, a corresponding receptacle can be formed on the molded body.

The movable furniture part can be pivotably mounted on the base part via two or more pivot fittings. The movable furniture part can be designed as an armrest, foot part or headrest. The base part can be a seat of upholstered furniture or a vehicle seat, for example. Furthermore, the base part can also be a treatment chair on which a movable furniture part is pivotably mounted.

Preferably, the molded body can have a low weight without pivoting fittings, for example less than 350 g, in particular between 50 g and 250 g's.

The molded body can be used with the swivel fitting for different applications, especially in vehicles. The term "furniture" is therefore not to be understood in a limiting sense, but also to include ab layers, armrests or other movable components that are installed in vehicles or ships or aircraft.

In the method according to the invention, a base part is provided on which a first lever of a swivel fitting is fixed. A second lever of the swivel fitting is inserted into a molded body that has a large number of hollow chambers and is manufactured by injection molding, extrusion or 3D printing. This simplifies the assembly of the Formkör pers, since it is only attached to one or more levers. The molded body can then optionally be surrounded with a flexible cover to complete the furniture.

Different types of swivel fittings can be used in the embodiment according to the invention. In addition to swivel fittings, in which the first lever and the second lever are adjusted relative to one another about an axis of rotation via a clamping mechanism, other swivel fittings can also be used, for example, which allow translational movements of the second lever to the first lever in addition to the pivoting movement, as exemplified with DE 20005850U or the

DE202008001323U1 is the case. Then the second lever can also be designed as a lever that can be moved translationally to the swivel fitting or as an angle piece. be tet. In these cases the pivoting takes place by means of a rotation or a combination of rotation and translation.

In the context of the invention, the use of pivot fittings in which the pivoting by means of a different mechanical principle he follows, such as that of a four-bar linkage or a multi-link mechanism, is possible.

Regardless of the solution specified in claim 1, the invention can also relate to a piece of furniture, in particular a piece of seating furniture, comprising a base part and at least one furniture part which is connected to the base part via a movement fitting or a connecting fitting, the furniture part consisting of one with a plurality Molded body provided by hollow chambers is available, which forms a core of the furniture part. The molded body can be designed according to the embodiment shown below, but without the swivel fitting. The movement fitting can be designed as a linear guide, pull-out guide or sliding fitting. As a result, the molded body can also be used for displaceable headrests or other furniture parts. This invention can also be used with rigid furniture parts, so that the molded body is only fixed via a connecting fitting, for example in a fixed back part. Then, for example, the belts which are stapled to the back parts could be omitted. Furthermore, the foam and cotton wool would also be omitted here.

Another embodiment would also be the use of the invention in a seat part of a piece of furniture. The furniture part with the molded body can be screwed to a body or plugged onto the body.

The invention is explained in more detail below using an exemplary embodiment with reference to the accompanying drawings. Show it:

Figure 1 is a perspective view of an inventive

Furniture;

FIG. 2 shows a perspective view of the movable furniture part with two swivel fittings;

FIG. 3 shows a sectional view through the shaped body of FIG. 2; FIG. 4 shows a perspective exploded view of the movable furniture part of FIG. 2;

FIGS. 5A and 5B show two detailed views of an individual part of the molded body, and

Figure 6 is a view of a modified item.

A piece of furniture 100 is designed as seating furniture and comprises a base part 104, which has a seat surface and a frame for supporting or fastening the base part 104. The furniture 100 shown schematically has a movable furniture part 101, which is designed as a pivotable head part and is connected to a backrest of the base part 104 via one or more pivot fittings 1. Furthermore, a movable furniture part 102 is provided as a side part on opposite sides, which is also connected to a frame of the base part 104 via one or more swivel fittings 1. Another movable furniture part 103 is designed as a foot part and is connected to the base part 104 via one or more swivel fittings 1. A first bracket 2 of a swivel fitting 1 is fixed to the base part 104 for all movable furniture parts 101, 102 and 103, while a second bracket 3, which is pivotably mounted on the first bracket 2 and can be fixed in different angular positions, is attached to each the movable furniture part 101, 102 or 103 fixed. The furniture 100 can be designed as upholstered furniture, such as an armchair, sofa, bed, but also as a vehicle or aircraft seat or as a treatment chair. The movable furniture parts can in particular also be used in mobile homes, ships or other vehicles.

FIG. 2 shows a molded body 4 which forms a core of a movable furniture part 101, 102 or 103 and is connected to the base part 104 via two pivot fittings. The molded body 4 consists of a plurality of individual parts 40, 41 and 42 which are assembled into a unit. The items 40, 41 and 42 can be plugged into one another, fixed to one another via fastening means or glued together.

A slot 43 is formed on the molded body 4 in the area of the pivot fitting 1, through which the first flange 2 of the pivot fitting 1 is passed. When adjusting the shaped body 4 by turning the Schwenkbe impact 1, the shaped body 4 pivots relative to the first Flebel 2, and the slot 43 is correspondingly cut out in the molded body 4 by a certain angular section.

In Figure 3, the molded body 4 is shown in section. The shaped body 4 comprises a plurality of flea chambers 7, which are surrounded by webs 8 of a stiffening structure. The webs 8 of the stiffening structure can be arranged like a framework in order to support the molded body 4, the molded body 4 each having a substantially smooth surface 5 and 6 on opposite sides. The surfaces 5 and 6 are supported by the stiffening structure formed from webs 8. The proportion of the flea chambers 7 based on the total volume of the molded body 4 is over 50%, for example between 70% and 95%. In this respect, the molded body 4 can be produced with a low weight in the case of large volumes. The molded body 4 or the individual parts 40, 41 and 42 of the molded body are preferably produced by injection molding, extrusion or 3D printing.

Two pockets 20 are formed on the molded body 4, which have a cross-sectional geometry that essentially corresponds to the cross-sectional geometry of the Flebels 3. The fleece 3 is plate-shaped, and the Ta's 20 are correspondingly provided with a rectangular cross-section. The fleece 3 can be fixed to the pockets 20 of the molded body 4 in a clamping or locking manner, so that tool-free assembly is possible. Optionally, the fleece 3 can also be glued or screwed to the molded body 4.

The flange 3 can also have a different geometry, for example it can be designed as an L-shaped angle piece, in which case the pocket 20 also has a corresponding geometry.

Each individual part 40 comprises connecting means 9, which are formed as thickened strips that can be fixed to FHaltem ittel 10 of an adjacent individual part 40, 41 or 42 by locking, flaftrifting or pushing in. The FHaltem ittel 10 are designed, for example, as a groove that encompasses the connecting means 9. These connecting means 9 and FHaltem ittel 10 are provided both between tween the items 40 and between the items 41, the items 41 being arranged on the edge. On the individual parts 41, a groove 16 delimited by webs is formed on the end face, in which further components can be fixed, for example a seam of a flexible cover for the molded body 4. Also between the individual parts 40 are formed rich of the surface 5 slots. In addition, the slot-shaped grooves 16 serve to increase the mobility of the individual part 40.

The surfaces 5 and 6 have a different elasticity when a contact pressure is applied. This is due to the fact that the stiffening structure from the webs 8 is designed differently in the area adjacent to the surface 5 than adjacent to the surface 6. An additional reinforcing web 11 is provided adjacent to the surface 6, which is missing adjacent to the surface 5 . As a result, the surface 5 is more elastic than the surface 6 at a contact pressure, which can be used, for example, to optimally adapt the spring properties of the surface 5 to the purpose of a.

In Figure 4, the molded body is shown in a view during assembly. The two swivel fittings 1 include the two brackets 2 and 3, which are rotatably mounted about an axis 12 and can be fixed in different angular positions to one another, as disclosed in DE 10 2017 110 253 A1 and DE 10 2015 113 749 A1. The one shown in the embodiment

Swivel fitting 1 is only an example. Other types of pivot fittings or pivot fittings with additional linear motion can also be used.

During assembly, the web-shaped lever 3 is inserted into a pocket 20 and fixed or pressed there, which is formed on the individual part 41 of the molded body 4. In the middle area between the two edge-side individual parts 41 two middle items 40 are provided, which can be fixed to each other by inserting the connecting means 9 on the holding means 10, the number of items 40 can be varied in the middle ren area depending on the application the length of the molded body 4 to change. On opposite sides 4 items 42 are provided on the longitudinal edges of the Formkör pers, which are arranged on the edge. The two individual parts 42 on the side of the swivel fittings 1 include the slot 43 for the implementation of the lever 2 in the area of a rounded edge. The slot 43 or the franking is required so that the pivot fitting 1 can pivot. The lever 2 needs a free space by pivoting, since this would otherwise strike the item 42.

On the opposite side, items 42 are also provided, which are fixed to the items 40 and 41 via plugs 13 and 14. The Plugs 13 and 14 have a cross-sectional contour which is adapted to the contour of hollow chambers 7 on the individual parts 40 and 41, so that the plugs 13 and 14 can be fixed in a clamping manner on the individual parts 40 and 41. Optionally, the stoppers 13 and 14 can also be glued or screwed to the individual parts 40 and 41.

In FIGS. 5A and 5B, an individual part 42 of the molded body 4 arranged on the longitudinal edges is shown in detail. It can be seen that a slot-shaped receptacle 15 is formed on the rounded edge, into which a construction part can be inserted, for example a seam or a Schnelleinhän profile of a flexible cover that surrounds the molded body 4. Furthermore, the plugs 13 and 14 can be seen, which can be inserted into the hollow chambers on the individual parts 40 and 41.

In the illustrated embodiment, the molded body 4 is composed of eight individual parts 40, 41 and 42. The number of items can of course be varied, depending on the size and shape of the molded body 4. In the illustrated embodiment, the molded body 4 is essentially plattenför mig with a flat smooth surface 5 on the top and a flat smooth surface 6 on the bottom . Other geometries of a shaped body 4 can also be used, for example in a curved shape or angular.

In Figure 6, a modified item 40 'is shown for a molded body. As in the previous exemplary embodiment, the individual part 40 ′ comprises connecting means 9 in the form of strips which can be fixed to U-shaped holding means 10 of an adjacent individual part 40 ′, 40, 41 or 42. The surfaces 5 'and 6' are not smooth but lattice-shaped. They can also have a different elasticity when a contact pressure is applied.

A shaped body 4 according to the invention can also be used for an immovable piece of furniture, in particular a head part, an arm part or a back part. Due to the modular structure and the low weight, an optimized and individually configurable seating furniture is created while at the same time improving the support properties. The otherwise rigid furniture parts can be connected to the base part using bars, possibly adjustable in height. The rods can be fixed in the molded body 4 without tools, analogously to the levers 3. The rods then form a connecting fitting. In addition to head parts, arm parts and footrests, a back part can also represent a molded body 4 according to the invention or a movable furniture part according to the invention.

The Flebel 2 and 3 can perform a combined rotating and sliding movement instead of a pure rotary movement around an axis. Furthermore, the ribs can also be arranged pivotably with respect to one another via a multi-joint mechanism.

The shaped body can also be filled in the area of the flea spaces. Furthermore, the molded body can have a body with an air-filled film or a film with fabric residues as a flexible structure. If the parts of the molded body are 3D printed, the surfaces can be lattice-shaped or have a honeycomb structure in order to achieve weight savings and even better spring properties.

List of reference symbols

1 swivel fitting

2 levers

3 levers

4 moldings

5, 5 ‘surface

6, 6 ‘surface

7 hollow chamber

8 bridge

9 Lanyards

10 holding means

11 reinforcement bar

12 axis

13 stopper

14 plugs

15 recording

16 groove

20 bag

40, 40 'item

41 single part

42 single part

43 slot

100 furniture

101 furniture part

102 furniture part

103 furniture part

104 base part

Claims

Expectations

1. Furniture (100), in particular seating, with a base part (104) on which a movable furniture part (101, 102, 103) is pivotably mounted via at least one swivel fitting (1), the at least one swivel fitting (1) with a first lever (2) is fixed to the base part (104) and is fixed to the movable furniture part (101, 102, 103) with a second lever (3) pivoted to the first lever (2) ver, characterized in that the second lever (3) is fixed to a shaped body (4) which is provided with a plurality of hollow chambers (7) and which forms a core of the movable furniture part (101, 102, 103).

2. Furniture according to claim 1, characterized in that in the molded body (4) a pocket (20) for receiving at least part of the two th lever (3) is formed.

3. Furniture according to claim 2, characterized in that the second lever (3) in the pocket (20) is fixed by clamping and / or locking.

4. Furniture according to one of the preceding claims, characterized in that a reinforcement structure formed from webs (8) is formed in the molded body (4) and the hollow chambers (7) are arranged between the webs (8).

5. Furniture according to one of the preceding claims, characterized in that the shaped body (4) is essentially plate-shaped and is composed of several individual parts (40, 41, 42).

6. Furniture according to one of the preceding claims, characterized in that a slot (43) is formed on the molded body (4) through which the first lever (2) is passed.

7. Furniture according to one of the preceding claims, characterized in that the shaped body (4) has a substantially smooth or grid-shaped surface (5, 6) on two opposite sides.

8. Furniture according to claim 7, characterized in that the two surfaces (5, 6) have a different elasticity due to the shape of the molded body (4).

9. Furniture according to one of the preceding claims, characterized in that the molded body (4) or the individual parts (40, 41, 42) of the molded body (4) are Herge by injection molding, extrusion or 3D printing.

10. Furniture according to one of the preceding claims, characterized in that the proportion of flea chambers (7) on the molded body (4) based on the total volume is over 50%, in particular between 60% and 95%.

11. Furniture according to one of the preceding claims, characterized in that the molded body (4) is surrounded on its outside by a flexible len cover.

12. Furniture according to one of the preceding claims, characterized in that the movable furniture part (101, 102, 103) via two or more pivot fittings (1) on the base part (104) is pivotably Gela Gert.

13. Furniture according to one of the preceding claims, characterized in that the movable furniture part (101, 102, 103) is designed as an armrest, foot part or headrest.

14. Furniture according to one of the preceding claims, characterized in that the base part (104) is designed as a seat or back part of an upholstered furniture or a vehicle seat.

15. Furniture according to one of the preceding claims, characterized in that an additional component, such as a display, an operating unit and / or a controller is fixed on the molded body (4).

16. Furniture (100), in particular seating furniture, with a base part (104) and at least one furniture part (101, 102, 103) which is connected to the base part (104) via a movement fitting or a connecting fitting, characterized in that the Furniture part from one with one There is a plurality of hollow chambers (7) provided molded body (4) which forms a core of the furniture part.

17. A method for assembling a piece of furniture, in particular seating furniture, with the following steps:

- Providing a base part and setting a lever of a

Swivel fitting on the base part;

- Manufacture of one or more individual parts (40, 41, 42) ge formed molded body (4) by injection molding, extrusion or 3D printing with a plurality of hollow chambers, and

- Attaching the molded body (4) to a second lever of the pivot fitting and fixing the molded body on the second lever for the pivotable mounting of the molded body (4) on the base part (104).