SWING FITTINGS AND FURNITURE

Description

[0001] The present invention relates to a swivel fitting, in particular for adjustment segments on furniture according to the preamble of claim 1, and to a piece of furniture.

[0002] These swivel fittings are used in furniture, especially upholstered furniture such as sofas, armchairs, or beds, to allow various adjustable components like armrests, headrests, or the like to swivel relative to the furniture's body. Such swivel fittings typically feature locking or detent mechanisms that allow them to be fixed in intermediate positions.

[0003] Depending on the arrangement of the swivel fitting on the furniture, it can happen that the thickness of the upholstery of an adjustment segment and / or the furniture body, as a result of the adjustment segment being in contact with another part of the furniture, exerts an undesirable torque on the swivel fitting, so that, due to the tension of the upholstery, the swivel fitting is brought into an undesired intermediate position in which the swivel fitting is then latched or locked.

[0004] To solve this problem, it is known from DE 10 2012 100 443 B3 to insert a spring in a cover of a lever head of a first or second lever, which transmits a force to one of the levers.

[0005] The spring is supported at one end by a support in the sides of the lid, which in turn is non-rotatably coupled to a first lever, while a second end of the spring is non-rotatably coupled to the second lever.

[0006] The problem is that some swivel fittings only have a single swivel lever, while the adjustment segment of the furniture that is to be swivelled relative to this is connected to a bearing shaft; in this case, one end of the spring would have to be supported on the adjustment segment of the furniture, which is very complex to assemble.

[0007] Further swivel fittings are known from the publications EP 3 132 719 A1 and EP 2 389 839 A1.

[0008] The object of the present invention is to further develop a pivot fitting of the generic type in such a way that no second lever is necessary to support the spring.

[0009] This problem is solved by a swivel fitting with the features of claim 1.

[0010] This problem is further solved by a piece of furniture with the features of claim 8.

[0011] In the case of the support element designed as part of the lever head, this can be bent out of the material of the lever head or integrally formed on it.

[0012] With a swivel fitting designed in this way, it is possible to design it with either one or two levers, since the spring is coupled to one lever on one side and to the bearing shaft on the other.

[0013] This avoids the need for coupling to a second lever or a separate piece of furniture.

[0014] Advantageous embodiments of the invention are the subject of the dependent claims.

[0015] It is also conceivable to use a component already present on the swivel fitting as an additional support element.

[0016] According to another design variant, the bearing shaft has a central opening in which a bolt is received.

[0017] Preferably, the second end of the spring is designed as a polygonal recess.

[0018] According to an advantageous further development of the invention, the bolt has a first neck section designed as a polygon, which is rotationally fixed in the second end of the spring designed as a polygon receptacle.

[0019] In a further advantageous embodiment, the bolt has a second neck section designed as a polygon, which is rotationally fixed in the central opening of the bearing shaft, which is designed as a polygonal receptacle. This allows the second end of the spring to be simply and rotationally fixed to the bearing shaft via the bolt.

[0020] According to an alternative design variant, a polygon is formed on a bearing shaft in extension of the central opening, which is rotationally fixed in the second end of the spring, which is designed as a polygonal receptacle.

[0021] This also provides a simple way to achieve a rotationally fixed coupling of the second end of the spring to the bearing shaft.

[0022] In an advantageous further development of this embodiment, the bolt has a cylindrical neck section which is received in a cylindrically shaped central opening of the bearing shaft and in this case serves only to axially fix the spring to the pivot fitting.

[0023] The furniture according to the invention, comprising a body and an adjustment segment pivotably mounted on a body, is characterized in that the adjustment segment is attached to the body via at least one pivot fitting as described above.

[0024] Preferred embodiments are explained in more detail below with reference to the accompanying drawings. They show: Figure 1 is a schematic perspective exploded view of a first embodiment of a pivot fitting according to the invention with a first lever and a second lever; Figure 2 is a top view of the first lever with the cover of the lever head omitted to show part of the bearing shaft and the fixing mechanism; Figure 3 is a side sectional view of the pivot fitting according to Figure 1 Figure 4 shows a perspective close-up view of the spring and a variant of a bolt axially fixing the spring to the first lever; Figure 5 shows one of the Figure 1 corresponding perspective exploded view of a second embodiment of a swivel fitting according to the invention with an alternatively designed bolt and bearing shaft, Figure 6 one of the Figure 3 corresponding sectional view of the swivel fitting according to Figure 5 Figure 7 shows a perspective view of a further embodiment of a swivel fitting according to the invention with only one lever, Figure 8 shows one of the Figure 6 corresponding representation of the swivel fitting according to Figure 7 , Figure 9 one of the Figure 1 corresponding perspective exploded view of a further alternative embodiment of a swivel fitting according to the invention with two levers, Figure 10 a top view of the swivel fitting according to Figure 9 with spring mounted, Figure 11 one of the Figure 1 A corresponding perspective exploded view of a further alternative embodiment of a swivel fitting with two levers according to the invention, Figure 12, one of the Figure 3 corresponding side section view of the swivel fitting according to Figure 11 , figures 13 and 14den Figure 11 and 12corresponding illustrations of a further embodiment of a swivel fitting according to the invention with only one lever and Figure 15 a perspective view of a piece of furniture.

[0025] In the following figure descriptions, terms such as top, bottom, left, right, front, back, etc., refer exclusively to the exemplary representation and position of the pivot fitting, the first lever, the bearing shaft, the locking mechanism, the spring, and the like, as chosen in the respective figures. These terms are not to be understood as restrictive; that is, these references may change due to different working positions, mirror-symmetrical design, or similar factors.

[0026] In the figures, reference numeral 1 designates a variant embodiment of a pivot fitting according to the invention. All variants embodiments of such a pivot fitting 1 serve, in particular, to pivot adjustment segments 82 relative to a furniture body 81 of a piece of furniture 8, as shown in Figure 15 This is an example.

[0027] While the in the Figures 1 to 6 and 9 to 12 The illustrated design variants of swivel fittings 1, which have levers 2 and 3 that can swivel relative to each other, are those shown in the Figure 7 and 8 as well as the design variants of swivel fittings 1 shown in 13 and 14, equipped with only one lever 2.

[0028] In all of the embodiment variants, the lever arm 21 of the first lever 2 (and, if present, the lever arm 31 of the second lever 3) has several bores which serve to allow the passage of screws for fastening the lever 2, 3 to mutually pivotable parts of the furniture 8.

[0029] The first lever 2 is designed in two layers in all illustrated embodiments, wherein a fixing mechanism 7, for example in the form of a locking mechanism, is accommodated between lever heads 22 of the first lever 2 which are cranked away from each other.

[0030] A design without such a fixing mechanism is also possible in the application. A single-layer design of the first lever 2 is also conceivable.

[0031] The in the Figures 1 to 4The first variant of a pivot fitting 1 shown according to the invention has, in addition to the first lever 2, a second lever 3, a spring 4, preferably in the form of a spiral spring, which is arranged via a bolt 5 on a side of the lever head 22 of the first lever 2 facing away from the second lever 3.

[0032] The bolt 5 has a head 54 that rests against an outer surface of the spring 4 facing away from the first lever 2. The bolt neck, which in the embodiment shown here consists of a cylindrical neck section 51 and two polygonal neck sections 52, 53, penetrates, in the assembled state, a second end 42 of the spring (designed as a polygonal receptacle), an opening 63 of a bearing shaft 6, and an opening in a disk 12. The bolt 5, together with the disk 12, axially fixes the components of the pivot fitting 1 to a rotation axis D of the first lever 2 and the bearing shaft 6. The head 54 of the bolt 5 covers at least the second end 42 of the spring 4, which is designed as a polygonal receptacle.

[0033] The bearing shaft 6, which is partially received in the lever head 22, has a first radial toothing 61 for rotationally fixed fixation in a toothed ring 32 of the second lever 3, as well as a second radial toothing 62 received within the lever head 22, which is coupled to the fixing mechanism 7.

[0034] The fixing mechanism 7 serves to fix the first lever 2 in different angular positions within a predetermined angle α relative to the bearing shaft 6.

[0035] For a more detailed description of such a fixing mechanism 7 designed as a latch mechanism, reference is made to DE 10 2017 110 247 A1, to which reference is hereby made.

[0036] Other configurations of such a fixing mechanism 7 are also conceivable. For example, instead of the radial toothing 61, an axial toothing can also be used as an engageable positive locking mechanism between components. A clamping mechanism based on frictional engagement is also conceivable.

[0037] To fix a first end 41 of the spring 4 to the lever 2, a support element 11 designed as a pin projects from the lever head 22.

[0038] The first end 41 of the spring 4, which is designed here as a spiral spring, is hook-shaped with an angled end piece 43 or is designed in an arc run-out, which in the functional position encompasses the support element 11.

[0039] The second end 42 of the spring 4 is designed here as a polygonal receptacle in which a first neck section 53 of the bolt 5, designed as a polygonal, is received.

[0040] As in Figure 3Furthermore, a second neck section 52 of the bolt 5, also designed as a polygon, is fixedly mounted in a central opening 63 of the bearing shaft 6 designed as a polygonal receptacle.

[0041] This means that the second end 42 of the spring 4 is coupled to the bearing shaft 6 in a rotationally fixed manner and the first end 41 of the spring 4 is supported on the support element 11 on the first lever 2, so that a corresponding torque counteracts an unintentional pivoting of the first lever 2 relative to the bearing shaft 6 and thus, in the case of a second lever 3 arranged in a rotationally fixed manner on the bearing shaft 6.

[0042] As an alternative to a pin attached to the lever head 22 as a support element 11, it is also conceivable, depending on the design of the swivel fitting, to use a component already present on the swivel fitting 1 as a support element 11.

[0043] Thus, the in Figure 2The exemplary fixing mechanism 7 shown has two locking pawls 71,72 which are pivotably mounted on the lever head 22 of the first lever 2 via retaining bolts.

[0044] One of these retaining bolts extends outwards through a bore in the lever head 22 towards the spring 4 and thus forms the support element 11 for the first end 41 of the spring 4.

[0045] The locking pawls 71, 72 serve to fix the pivot fitting 1 in a predetermined locking position or to release the bearing shaft 6 relative to the first lever 2 during a return movement of the pivot fitting 1.

[0046] In contrast to the one in the Figures 1 to 4 The illustrated version of a swivel fitting is the one shown in the Figures 5 and 6 The illustrated pivot fitting of the bolts 5 is designed with a head 54 and only a cylindrical neck section 51.

[0047] To prevent the second end 42 of the spring 4 from rotating with the bearing shaft 6, a polygon 64, formed on the bearing shaft 6, projects from the lever head 22 of the first lever 2 in extension of the central opening 63 and is received in a rotationally fixed manner in the end 42 of the spring 4, which is designed as a polygonal receptacle.

[0048] In this case, the bolt 5 serves only to axially fix the spring 4 to the first lever 2.

[0049] The end of the bearing shaft 6 facing away from the spring 4 is in turn rotationally fixed to a second lever 3 via the first radial toothing 61, as shown in Figure 6 shown.

[0050] The Figure 7 and 8 show a version of a swivel fitting 1 with only the first lever 2.

[0051] The bearing shaft 6 protrudes from the lever head 22 on the side of the first lever 2 facing away from the spring 4 so far that the radial toothing 61 is positioned outside the lever head 22, so that a corresponding coupling element of an adjustment segment of a piece of furniture can be directly connected to this radial toothing 61.

[0052] Furthermore, this variant corresponds to the one based on the Figures 5 and 6 described design variant of the swivel fitting 1.

[0053] The in the Figure 9 and 10 The illustrated embodiment of a swivel fitting 1 essentially corresponds to the one described in the Figures 1 to 4 shown version variant.

[0054] Here, in contrast to the one in Figure 1 In the illustrated embodiment, the support element 11 is designed as a pin mounted on the lever head and projecting in the direction of the spring 4.

[0055] It is also conceivable in principle to design the support element 11 as a section of a lever head 22 of the lever 2 projecting in the direction of the spring 4.

[0056] Furthermore, a polygonal or toothed ring-shaped polygon 65 of the bearing shaft 6 projects from the lever head 22 towards the spring 4. The central opening 63 of the bearing shaft 6 is again designed as a polygon, in particular as a square, and serves to receive the second neck section 52 of the bolt 5, which is also designed as a square.

[0057] Figure 10 Figure 1 shows, by way of example, the coupling of the first end 41 of the spring 4 via the bent end piece 43 to the support element 11 on the lever head 22 of the first lever 2.

[0058] The in the Figure 11 and 12 The further embodiment of a swivel fitting 1 shown shows two lever arms 2,3, corresponding to the embodiment of the swivel fitting 1 shown in Figures 9 and 10.

[0059] The bearing shaft 6 has at its end facing the spring 4 an end piece 64 which is shaped to fit the polygonal receiving of the second end 42 of the spring 4 and which connects to a polygonal or toothed ring polygon 65 of the bearing shaft 6 which projects out of the lever head 22 of the first lever 2 in the direction of the spring 4.

[0060] The Figure 13 and 14 Finally, an embodiment of a swivel fitting 1 according to the invention is shown, which is essentially the same as the one described in Figure 11 and 12 The version shown corresponds to the version shown, except without the second lever 3.

[0061] The Figure 15 Figure 8 shows an exemplary construction of a piece of furniture 8 and a carcass 81 and an adjustment segment 82 which is pivotable on the carcass 81, wherein the adjustment segment 82 is pivotable on the carcass 81 of the piece of furniture 8 via such a pivot fitting 1. Reference symbol list

[0062] 1 swivel fitting 2 first lever 21 lever arm 22 lever head 3 second lever 31 lever arm 32 toothed ring 4 spring 41 first end 42 second end 43 end piece 5 bolts 51 neck section 52 neck section 53 neck section 54 head 6 Bearing shaft 61 Radial toothing 62 Radial toothing 63 Opening 64 Polygon 65 Polygon 7 Locking mechanism 71 Latching pawl 72 Latching pawl 8 Furniture 81 Furniture carcass 82 Adjustment segment 11 Support element 12 Disc D-axis V-direction of adjustment R-direction of return

Claims

1. Pivot fitting (1), in particular for adjustable segments on pieces of furniture, comprising - a two-layer first lever (2) which is pivotably mounted on a bearing shaft (6), - a fixing mechanism (7) accommodated between lever heads (22) of the first lever (2) which are cranked away from each other, with which the lever (2) can be fixed in different angular positions within a predetermined angle (α) relative to the bearing shaft (6), - a spring (4) for transmitting torque to the lever (2), - wherein a first end (41) of the spring (4) is coupled to the lever (2) and a second end (42) of the spring (4) is coupled to the bearing shaft (6) in a rotationally fixed manner, characterized in that - a support element (11) protrudes from a side of the first lever (2) facing the spring (4), to which the first end (41) of the spring (4) is coupled, - wherein a detent pawl (72) of the fixing mechanism (7), which is pivotably mounted on the first lever (2), engages with a toothing (61, 62) of the bearing shaft (6) in a detent position of the pivot fitting (1) for the rotationally fixed fixing of a second lever (3) or a furniture segment that can be pivoted relative to the first lever (2), and - wherein the support element (11) is designed as a pin protruding in the direction of the spring (4), a section of the lever head (22) of the lever (2) or the end of a retaining bolt of the detent pawl (72) of the fixing mechanism (7) pivotably mounted on the first lever (2).

2. Pivot fitting according to one of the preceding claims, characterized in that the bearing shaft (6) has a central opening (63) in which a bolt (5) is accommodated.

3. Pivot fitting according to one of the preceding claims, characterized in that the second end (42) of the spring (4) is designed as a polygonal receptacle.

4. Pivot fitting according to claims 2 and 3, characterized in that the bolt (5) has a first neck section (53) designed as a polygon, which is accommodated in a rotationally fixed manner in the second end (42) of the spring (4) designed as a polygonal receptacle.

5. Pivot fitting according to claim 4, characterized in that the bolt (5) has a second neck section (52) designed as a polygon, which is accommodated in a rotationally fixed manner in the central opening (63) of the bearing shaft (6) designed as a polygonal receptacle.

6. Pivot fitting according to claims 2 and 3, characterized in that a polygon (64) is integrally formed on the bearing shaft (6) in extension of the central opening (63), which polygon is accommodated in a rotationally fixed manner in the second end (42) of the spring (4) which is designed as a polygonal receptacle.

7. Pivot fitting according to claim 6, characterized in that the bolt (5) has a cylindrical neck section (51) which is accommodated in a cylindrically designed central opening (63) of the bearing shaft (6).

8. Piece of furniture (8) having a body (81) and an adjustment segment (82) pivotably held on the body (81), characterized in that the adjustment segment (82) is fastened to the body (81) via at least one pivot fitting (1) according to one of the preceding claims.