Furniture and furniture fittings for connecting furniture parts

Abstract

Furniture fitting for connecting furniture parts, in particular upholstered furniture, with a base element (10) that can be attached to a first furniture part and a cover plate (20) that can be attached to a second furniture part, wherein - the basic element (10) has a base plate (11) to which a protruding clamping element (17) is rotatably attached and - the cover plate (20) has a recess (203), wherein - the clamping element (17) protrudes at least partially through the recess (203) in at least one rotational position when joining the base element (10) and the cover plate (20), and wherein - the clamping element (17) after a rotation overlaps the cover plate (20) at least partially in the area of ​​the recess (203) and thus connects the cover plate (20) to the base element (10) in a form-fit and force-fit manner, characterized by - a pivot lever (15) projecting laterally beyond the base element (10), which is rotationally fixed to the clamping element (17), and by - at least one protruding centering bolt (13) which is arranged on the base plate (11) and penetrates into a corresponding bore in the cover plate (20) in a joining position.

Description

[0001] The invention relates to a furniture fitting for connecting furniture parts, in particular upholstered furniture, with a base element attachable to a first furniture part and a cover plate attachable to a second furniture part according to the preamble of claim 1. The invention further relates to a piece of furniture with at least two furniture parts.

[0002] Plug-in connectors are frequently used to join larger furniture components, such as seat cushions, backrests, or side panels of upholstered furniture. A disadvantage of these connectors is that they can come loose if the furniture components are moved in the opposite direction to the joint. Alternatively or additionally, externally applied connecting tabs are used for such large furniture components. However, due to safety concerns and design considerations, this is only feasible in concealed areas, such as the underside of a sofa.

[0003] The publication DE 20 2014 100 019 U1 shows a connection of furniture parts that have openings through which a separate, loose connecting rod is inserted as a clamping element. This type of connection is only feasible for furniture parts that can be provided with such openings.

[0004] German patent application DE 10 2005 023 124 A1 describes a plug-and-turn connection between a functional element, such as a bolt or threaded insert, and a plate-shaped support component. This plug-and-turn connection can be used to conceal the aforementioned functional elements. The functional element is inserted into a cup-shaped recess in the support component and secured there by a turning motion with a bayonet fitting. This type of concealed connection is unsuitable for large furniture components, as a turning motion is generally not possible when connecting such components. Furthermore, the turning motion prevents two furniture components from being joined with more than one fitting, which is usually necessary for large furniture pieces.

[0005] Document US 4,402,117 A discloses a furniture fitting for connecting two furniture parts with a base plate and a top plate, each mounted on one of the furniture parts. A locking knob is arranged on the top plate, protruding through the base plate and, when turned, securing the top plate to the base plate. However, the locking knob can only be actuated through a hole in the furniture part being joined, requiring axial access to the locking knob. A concealed connection is therefore not possible. A similar arrangement is also shown in document US 2014 / 0079511A1.

[0006] The publication EP 1 110 485 A1 discloses a furniture fitting for connecting two adjacent furniture parts. A fitting plate is mounted on each furniture part, and these are then fastened together by means of a locking element connecting the two plates. The locking element is hooked onto one plate and locked onto the other with a toggle, which also requires axial access to the toggle.

[0007] German patent application DE 40 16 486 A1 discloses a connector between a table leg and a tabletop. Tension bolts projecting longitudinally into the table leg are provided with a circumferential groove. A base plate is inserted into the tabletop from below. This base plate has a pivot lever that can be pivoted by a handle located next to the attached leg. The lever engages in the grooves of the tension bolts to secure them. A concealed connection is not possible because the handle of the pivot lever is located within the area of ​​the base plate.

[0008] A furniture connector is known from publication AT 005 785 U1, in which a flat beam attached to one furniture part is inserted laterally into a adapted guide in a base plate, the base plate being attached to the other furniture part. A pivot lever is arranged on the base plate such that, when pivoted, it moves axially along inclined surfaces and secures the flat beam. Here too, a handle of the pivot lever is located within the area of ​​the base plate, so that a concealed connection is not possible.

[0009] Finally, a furniture fitting with a base plate and a cover plate for connecting two furniture parts is known in publication GB 489 675 A. This fitting features a pivot lever projecting laterally beyond the base plate. An undercut bolt is arranged on the cover plate, protruding through a recess in the base plate and engaged by the pivot lever in the area of ​​the undercut. Due to the laterally projecting pivot lever, the fitting is generally suitable for concealed connections; however, it is particularly difficult to position large furniture parts so that the bolt can penetrate the recess.

[0010] It is therefore an object of the present invention to create a furniture fitting for furniture parts, in particular large furniture parts of upholstered furniture, which creates a load-bearing and concealed connection even against the joining direction, which can be easily manufactured and also unassembled without tools.

[0011] This task is solved by a furniture fitting or a piece of furniture with the features of the respective independent claim. Advantageous designs and further developments are specified in the dependent claims.

[0012] In a furniture fitting of the type mentioned above according to the invention, the base element has a base plate to which a projecting clamping element is rotatably attached. The cover plate has a recess, wherein the clamping element, in at least one rotational position when the base element and cover plate are joined, projects at least partially through the recess, and wherein, after a rotation, the clamping element overlaps the cover plate at least partially in the area of ​​the edges of the recess, thus connecting the cover plate to the base element in a form-fit and force-fit manner.

[0013] The clamping element, which is rotatably mounted on the base plate of the base element, allows the base element and the top plate, each mounted on the furniture parts to be joined, to be assembled by a simple translational movement and then connected by twisting the clamping element. Since the joining motion is purely translational, several such furniture fittings can be attached to each piece to connect two furniture parts. The connection can be broken by twisting the clamping element back to its initial position, also referred to as the unlocked position.

[0014] According to the invention, a pivot lever projecting laterally beyond the base element is provided, which is rotationally fixed to the clamping element. The clamping element can be rotated via the pivot lever, thereby connecting or disconnecting the base element and the top plate. Such a furniture fitting can preferably be used to connect upholstered furniture components, whereby the fitting is concealed in the upholstery gap between the furniture components and the pivot lever can be conveniently operated by reaching into the upholstery gap.

[0015] The design of the furniture fitting and its arrangement on the furniture is preferably such that the pivot lever is no longer visible after installation. Accordingly, the pivot lever is designed so that it rests as snugly as possible against the base element when closed. Alternatively, the pivot lever can also be designed as a deliberately visible design element.

[0016] Furthermore, according to the invention, at least one protruding centering pin is arranged on the base plate, which, in a joining position, penetrates corresponding bores in the cover plate. In the joined state of the base element and the cover plate, the centering pin absorbs transverse forces acting between them. Preferably, the at least one centering pin is tapered at its free end, causing the cover plate and the base element to align themselves automatically when joined. Even more preferably, at least two centering pins are provided, whereby a torque acting between the base element and the cover plates is absorbed in the joined state, thus creating a rotationally fixed connection between the base element and the cover plate.

[0017] To achieve correct positioning of two furniture parts, the top panels and base panels can be provided with embossings or cutouts that fit into correspondingly placed openings or bores in the furniture parts.

[0018] In a preferred embodiment of this design, the clamping element and the pivot lever are rotatably mounted on the base plate by means of a rivet and are rotationally fixed to each other via the rivet. Particularly advantageously, the rivet has a polygonal section, wherein the rivet is guided through corresponding polygonal openings in the clamping plate and the pivot lever, thereby rotationally fixing the pivot lever and the clamping element to each other.

[0019] In a further preferred embodiment, a raised bearing surface, preferably formed as an embossed groove, is provided on the base plate, preferably in an edge region of the base plate, wherein at least one pivot area of ​​the pivot lever is recessed. In this embodiment, the cover plate rests on the raised bearing surface when joined. In the pivot area of ​​the lever, a gap is thus formed between the cover plate and the base plate, in which the pivot lever can move. If the cover plate rests only in an edge region of the base plate, the central region of the cover plate can deflect relative to the base plate, thereby achieving a force-fit and tolerance-compensating clamping of the two plates against each other.

[0020] In a further advantageous embodiment of the furniture fitting, chamfers are provided on the clamping element and / or the recess in the cover plate. When the connection between the base element and the cover plate is closed, the chamfers interact with each other, enabling the clamping element to grip and pull a cover plate that is not fully seated on the base element. Further rotation of the clamping element creates a clamping force between the clamping element, and thus between the base element and the cover plate, resulting in a firm and load-bearing connection between the two components. In a preferred embodiment, at least one side edge of the recess in the cover plate and / or the clamping element is chamfered to form a chamfer.In a further advantageous embodiment, the clamping element has at least one radially outwardly projecting clamping wing which is chamfered and / or inclined relative to the base plate to form a chamfer. The chamfer can be formed by a bevel on at least one side edge of the clamping wing. An inclined position can, for example, be formed by bending a portion of the clamping wing.

[0021] In a piece of furniture according to the invention, comprising at least two furniture parts, at least one such furniture fitting is provided for connecting the at least two furniture parts. Among other advantages, the aforementioned benefits associated with the furniture fitting arise from this. Since no access to the interior of the furniture is required to assemble the furniture parts, the furniture fitting according to the invention also allows for complete upholstery of the individual furniture parts before they are assembled into the complete piece of furniture.

[0022] The invention is explained in more detail below with reference to exemplary embodiments and the accompanying figures. The figures show: Fig. 1 a perspective schematic exploded view of a piece of furniture with several furniture parts and connecting fittings; Fig. 2 a perspective exploded view of a furniture fitting in a first embodiment; Fig. 3 a top view of the furniture fitting of the Fig. 2 in an unlocked state; Fig. 4 a top view of the furniture fitting of the Fig. 2 in a locked state; Fig. 5, Fig. 6 each a side view of the furniture fitting of the first embodiment from different viewing directions and Fig. 7 a perspective view of a furniture fitting in a second embodiment.

[0023] Fig. Figure 1 shows a perspective schematic drawing of a piece of furniture composed of several parts. It depicts a sofa with a seat 1, a backrest 2, and a side panel 3. Furniture fittings are provided for connecting the individual parts, each comprising a base element 10 and a cover plate 20. The base element 10 is attached to one of the furniture parts, for example, by means of screws, and the corresponding cover plate 20 is attached to another of the furniture parts.

[0024] To assemble the furniture shown, the backrest 2 is lowered onto the seat 1 along the dashed line shown, thereby aligning the components located on the underside of the backrest 2 and in the Fig. The cover plates 20, mounted on the backrest 2 and not visible, are joined to the base elements 10 mounted on the seat 1. Swivel levers 15 are arranged on the base elements 10, which protrude from the gap between the two furniture parts after the backrest 2 is placed on the seat 1. Swiveling the levers 15 clamps the cover plates 20 against the base elements 10, thus securing the backrest 2 to the seat 1. When the levers 15 are actuated, they pivot into the upholstery gap between the seat 1 and the backrest 2, so that the entire furniture fitting is no longer visible and is concealed between the furniture parts.

[0025] After connecting seat section 1 and backrest 2, side section 3 is moved towards the unit consisting of seat section 1 and backrest 2 along the connection lines shown in the lower section. The three cover plates 20, which are mounted on side section 3, are thereby joined to the corresponding base elements 10 and again locked in place by actuating the pivot levers 15.

[0026] It is understood that the number of furniture fittings used to connect the furniture parts may vary depending on the load.

[0027] In Fig. 2 is a furniture fitting, as in the example of the Fig. 1 is used, shown in more detail in a perspective exploded view.

[0028] The base element 10 has a base plate 11 in which mounting holes 111 are provided for attaching the base element 10 to a furniture part. The mounting holes 111 are designed with a countersink for countersunk screws.

[0029] In the illustrated embodiment, the basic shape of the base plate 11 is rectangular, with raised supports 12 being applied to the base plate 11 in the area of ​​the shorter transverse sides as bearing surfaces for the cover plate 20.

[0030] The base plate 11 is preferably made of sheet metal using a stamping process. The raised supports 12 can preferably be embossed as beads during the stamping process. Alternatively, the raised supports 12 can also be welded onto the base plate 11 as separate sheet metal elements or bonded to the base plate 11 as separate plastic elements, for example, manufactured using an injection molding process. In the area of ​​the raised supports 12, a bore 113 is provided through the raised supports 12 and the base plate 11, into which a centering bolt 13 is inserted and connected to the base plate 11, for example, by riveting. In the case where the raised supports 12 are designed as separate elements, the centering bolts provide additional fastening for the raised supports 12. The centering bolt 13 protrudes essentially perpendicular to the surface of the base plate 11 and the raised support 12.

[0031] A bearing bore 112 is arranged centrally in the base plate 11. A rivet 14 is inserted into this bore from the underside of the base plate 11. The rivet has a laterally projecting edge 141 against the underside of the base plate 11 and can rotate freely within the bearing bore 112. A pivot lever 15, a spacer 16, and a clamping element 17 are mounted onto the rivet 14 from the top side of the base plate 11. The pivot lever 15 projects laterally beyond the surface of the base element 10 with a handle 151. In the illustrated embodiment, the pivot lever 15 is angled. The rivet 14 is inserted through a polygonal opening 152 in the lever and also has a polygonal section 142 in the contact area with the pivot lever 15. The pivot lever 15 and the rivet 14 are thus coupled to each other in a rotationally fixed manner.

[0032] In the illustrated embodiment, the clamping element 17 is a sheet metal component manufactured in a stamping and bending process. It has a flat central area containing a central polygonal opening 172. Outer sections of the clamping element 17 are bent obliquely upwards on two opposite sides. These sections are subsequently referred to as clamping wings 171. The polygonal opening 172 of the clamping element 17 is also located within the area of ​​the polygonal section 142 of the rivet 14, so that the clamping element 17 is rotationally fixed to the rivet 14 and thus rotationally fixed to the pivot lever 15. After the clamping element 17 is positioned, the rivet 14 is embossed in the area of ​​a rivet head 143 projecting upwards from the clamping element 17.

[0033] In the area of ​​the bearing bore 112, slightly protruding stops 114 are arranged on the base plate 11, which limit the swivel range of the swivel lever 15. The stops 114 facilitate the correct setting of the optimal unlocking and locking positions.

[0034] In addition to the base element 10, the furniture fitting includes the cover plate 20, which can be detachably connected to the base element 10. The cover plate 20 has the same external dimensions as the base plate 11 and is also manufactured as a stamped sheet metal part. It has mounting holes 201, allowing the cover plate 20 to be attached to a furniture component in the same way as the base plate 11. Furthermore, centering openings 202 are provided in the cover plate 20, into which the centering bolts 13 engage when the cover plate 20 is joined to the base element 10. To simplify the assembly of the cover plate 20 and the base element 10, the centering bolts 13 can be tapered at their free end, for example, by having a circumferential chamfer 131 on the upper edge (see figure). Fig. 5) A tapering extending over a longer section of the centering bolt 13 is also possible.

[0035] Fig. Figure 3 shows the furniture fitting made of Fig. Figure 2 shows a top view after the cover plate 20 has been joined to the base element 10. In the illustrated rotational position of the clamping element 17, it projects at least partially (in terms of its height) through a recess 203 in the cover plate 20. In the illustrated embodiment, the recess 203 is rectangular and dimensioned such that the clamping element 17, with its clamping wings 171, fits just through the recess 203 in the illustrated rotational position of the clamping element 17.

[0036] To connect the cover plate 20 to the base element 10, the pivot lever 15 is pivoted by 90° in this embodiment and then engages the Fig. The position shown in Figure 4 is entered. The pivoting movement of the pivot lever 15 leads to a corresponding rotation of the clamping element 17. Due to the rotation, sections of the clamping element 17 overlap the cover plate 20 in the area of ​​the edges of the recess 203.

[0037] During the rotation of the clamping element 17, the inclined clamping wings 171 of the clamping element 17 initially run onto the side edges of the recess 203. To facilitate this running-on, the corresponding side edges are provided with a chamfer 204 in the illustrated embodiment. The chamfered side edge and the inclined clamping wings 171 thus form ramps by which, as they run together, the cover plate 20 is pressed towards the base plate 11.

[0038] Since the cover plate 20 rests on the raised supports 12 only in its outer area, the cover plate 20 and, to a certain extent, the base plate 11 can deflect slightly and are thus clamped against each other by the clamping element 17. The spring action of the cover plate 20 and, if applicable, the base plate 11 also compensates for tolerances if the height of the rivet 14 and the thickness of the clamping lever 15 and / or the spacer 16 exhibit material-related tolerances.

[0039] The positive locking achieved by the clamping element 17 overlapping the cover plate 20 absorbs forces acting axially along the axis of rotation of the clamping element 17. The additional force-fit connection between the cover plate 20 and the base element 10, created by the clamping action, also absorbs transverse forces acting between the base element 10 and the cover plate 20. These are further absorbed by the centering bolts 13. In summary, the furniture fitting according to the application provides a concealed connection for large furniture components that can absorb forces and torques in any direction. The connection can also be easily released and re-established multiple times without tools.

[0040] In the Fig. 5 and Fig. 6 is the furniture fitting of the Fig. 4 shown again in a side view in the locked state, whereby Fig. 5 shows a view of the long side of the base plate 11 or the cover plate 20 and Fig. 6 a view of the shorter transverse side of the cover plate 20 or the base plate 11.

[0041] It is also conceivable to form the pivot lever 15, the spacer disc 16 and the clamping element 17 in one piece, which on the one hand creates a rotationally fixed connection of these parts without further intervention, and on the other hand the rivet 14 could be designed without a polygonal section 142, only with a round cross-section.

[0042] In Fig. Figure 7 shows a second embodiment of a furniture fitting suitable for application. In this figure, the same reference numerals denote identical or equivalent elements as in the preceding figures.

[0043] In this embodiment as well, a substantially rectangular base plate 11 for the base element 10 and a cover plate 20 of the same shape are used. Mounting holes 111 and 201 are again provided, as well as centering bolts 13 which are connected to the base plate 11 and which, when the cover plate 20 and base plate 11 are assembled, protrude through corresponding centering openings 202 in the cover plate 20.

[0044] As in the first embodiment, a raised support 12, designed as a groove, is provided, forming a bearing surface for the cover plate 20. The groove is formed by a protruding indentation in the base plate 11, but, as already mentioned in the first embodiment, it can also be formed by a separate element.

[0045] Analogous to the first embodiment, a clamping element 17 is provided which is rotatably mounted on a rivet 14 on the base plate 11. A laterally projecting pivot lever 15 is non-rotatably connected to the rivet 14 and thus to the clamping element 17.

[0046] One difference from the first embodiment lies in the design of the clamping element 17 and the recess 203 through which the clamping element 17 projects. In this embodiment, the clamping element 17 has the shape of a fly, with two radially outward-extending circular segment-shaped clamping wings 171 facing each other, originating from a central circular section. The side edges of the clamping wings 171 are provided with a chamfer 173. It is also conceivable, of course, to provide the clamping element with only one radially outward-extending circular segment-shaped clamping wing.

[0047] The recess 203 in the cover plate 20 is adapted in shape to the clamping element 17. As in the first embodiment, the side edges of the recess 203 are also provided with a chamfer 204. The chamfer 204 on the recess 203 and the chamfer 173 of the side edges again form chamfers which, when the clamping element 17 is rotated, emerge from the surface in the Fig. 7 in the rotational position shown, they run into each other, pressing the cover plate 20 onto the base element 10. Reference symbol list 1 seat section 2 Backrest 3 side panel 10 Basic Element 11 Base plate 111 Mounting hole 112 Bearing bore for rivet 113 Hole for centering bolt 114 attacks 12th edition 13 centering bolts 131 Phase 14 rivets 141 protruding edge 142 Polygonal section 143 Rivet head 15 swivel levers 151 Handle 152 Polygonal opening 16 spacer 17 clamping element 171 Tensioning wings 172 Polygonal opening 173 Phase 20 Cover plate 201 Mounting hole 202 Centering opening 203 recess 204 Phase

Claims

[1] Furniture fitting for connecting furniture parts, in particular upholstered furniture, with a base element (10) that can be attached to a first furniture part and a cover plate (20) that can be attached to a second furniture part, wherein - the basic element (10) has a base plate (11) to which a protruding clamping element (17) is rotatably attached and - the cover plate (20) has a recess (203), wherein - the clamping element (17) protrudes at least partially through the recess (203) in at least one rotational position when joining the base element (10) and the cover plate (20), and wherein - the clamping element (17) after a rotation overlaps the cover plate (20) at least partially in the area of ​​the recess (203) and thus connects the cover plate (20) to the base element (10) in a form-fit and force-fit manner, characterized by - a pivot lever (15) projecting laterally beyond the base element (10), which is rotationally fixed to the clamping element (17), and by - at least one protruding centering bolt (13) which is arranged on the base plate (11) and penetrates into a corresponding bore in the cover plate (20) in a joining position. [2] Furniture fitting according to claim 1, wherein the clamping element (17) and the pivot lever (15) are rotatably mounted on the base plate (11) by means of a rivet (14) and are coupled to each other in a rotationally fixed manner via the rivet (14). [3] Furniture fitting according to claim 2, wherein the rivet (14) has a polygonal section (142) and is guided through polygonal openings (172, 152) of the clamping element (17) and the pivot lever (15). [4] Furniture fitting according to one of claims 1 to 3, wherein at least one raised support (12) for the top plate (20) is provided on the base plate (11). [5] Furniture fitting according to claim 4, wherein the raised support (12) is formed in an edge area of ​​the base plate (11), wherein at least one pivot area of ​​the pivot lever (15) is recessed. [6] Furniture fitting according to one of claims 1 to 5, wherein chamfers are provided on the clamping element (17) and / or the recess (203) of the cover plate (20). [7] Furniture fitting according to claim 6, wherein at least one side edge of the recess (203) and / or the clamping element (17) is provided with a chamfer (204, 173). [8] Furniture fitting according to claim 6 or 7, wherein the clamping element (17) has at least one radially outwardly extending clamping wing (171) which is beveled and / or inclined relative to the base plate (11). [9] Furniture with at least two furniture parts, characterized by , that at least one furniture fitting according to one of claims 1 to 8 is provided for connecting the at least two furniture parts.

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