EP3741255A1 - Pivot fitting and furniture - Google Patents

Abstract

A swivel fitting (1), especially for adjustment segments (82) on furniture (8), has a first lever (2) which is pivotably mounted on a bearing shaft (6), a fixing mechanism (7) with which the lever (2 ) can be fixed in different angular positions within a predetermined angle (a) relative to the bearing shaft (6), a spring (4) for transmitting a torque between the lever (2) and the bearing shaft (6), a first end (41) the spring (4) on the lever (2) and a second end (42) of the spring (4) is rotatably coupled to the bearing shaft (6). A piece of furniture (8) with such a swivel fitting (1) is also described.

Description

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

Such swivel fittings are used in furniture, in particular in upholstered furniture, for example sofas, armchairs or beds, in order to be able to swivel various adjustment segments such as armrests, headrests or the like relative to a body of the furniture. Such swivel fittings usually have locking or latching mechanisms that enable such a swivel fitting to be fixed in intermediate positions.

Depending on the arrangement of the swivel fitting on the furniture, it can happen that an undesirable torque is exerted on the swivel fitting due to the thickness of the upholstery of an adjustment segment and / or the furniture body as a result of the adjustment segment resting against another part of the furniture, so that by 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.

To fix this problem it is over DE 10 2012 100 443 B3 known to use a spring in a cover of a lever head of a first or second lever which transmits a force to one of the levers.

The spring is supported with a first end on one in the sides of the cover, which in turn is rotatably coupled to a first lever, while a second end of the spring is rotatably coupled to the second lever.

The problem is that with some swivel fittings only a single swivel lever is provided, while the adjustment segment of the furniture to be swiveled relative to this is connected to a bearing shaft, one end of the spring would have to be supported on the adjustment segment of the furniture in this case, which is very assembly-intensive.

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

This object is achieved by a swivel fitting with the features of claim 1.

This object is also achieved by a piece of furniture with the features of claim 12.

The pivot fitting according to the invention has a first lever which is pivotably mounted on a bearing shaft.

The swivel fitting also has a fixing mechanism with which the lever can be fixed in different angular positions within a predetermined angle relative to the bearing shaft.

The swivel fitting also has a spring for transmitting a torque to the lever.

The first end of the spring is coupled to the lever and a second end of the spring is non-rotatably coupled to the bearing shaft.

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

Coupling to a second lever or a separate furniture element can thereby be avoided.

Advantageous embodiment variants of the invention are the subject of the subclaims.

According to an advantageous embodiment of the invention, a support element, to which the first end of the spring is coupled, projects from a side of the first lever facing the spring.

According to an embodiment variant, this support element can be designed as a pin protruding in the direction of the spring.

It is also conceivable to design the support element as a portion of a lever head of the lever that projects in the direction of the spring. The section can be bent out of the material of the lever head or integrally formed thereon.

It is also conceivable to use a component already present on the pivot fitting as a support element.

In particular, the support element is designed as an end, projecting in the direction of the spring, of a retaining bolt of a latching pawl of the fixing mechanism that is pivotably mounted on the first lever. The latching pawl is in a latching position of the swivel fitting in engagement with a toothing of the bearing shaft for the rotationally fixed fixing of a second lever or a furniture segment that can be pivoted relative to the first lever.

According to a further embodiment variant, the bearing shaft has a central opening in which a bolt is received.

The second end of the spring is preferably designed as a polygonal receptacle.

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

According to an advantageous further development, the bolt has a second neck section designed as a polygon which is received in a rotationally fixed manner in the central opening of the bearing shaft designed as a polygonal receptacle. As a result, the second end of the spring is coupled in a simple manner to the bearing shaft in a rotationally fixed manner via the bolt.

According to an alternative embodiment variant, a polygon is formed on a bearing shaft as an extension of the central opening and is received in a rotationally fixed manner in the second end of the spring, which is designed as a polygonal receptacle.

In this way, too, a rotationally fixed coupling of the second end of the spring to the bearing shaft is realized in a simple manner.

In an advantageous further development of this embodiment variant, the bolt has a cylindrical neck section which is received in a cylindrical central opening in the bearing shaft and in this case only serves to axially fix the spring on the swivel fitting.

The furniture according to the invention with a body and an adjustment segment held pivotably on a body is characterized in that the adjustment segment is attached to the body via at least one pivot fitting as described above.

Figur 1

eine schematische perspektivische Explosionsdarstellung einer ersten Ausführungsvariante eines erfindungsgemäßen Schwenkbeschlages mit einem ersten Hebel und einem zweiten Hebel,

Figur 2

eine Draufsicht auf den ersten Hebel mit weggelassener Abdeckung des Hebelkopfes zur Darstellung eines Teils der Lagerwelle und des Fixiermechanismus,

Figur 3

eine Seitenschnittansicht des Schwenkbeschlages gemäß Figur 1,

Figur 4

eine perspektivische Einzeldarstellung der Feder und einer die Feder am ersten Hebel axial fixierenden Ausführungsvariante eines Bolzens,

Figur 5

eine der Figur 1 entsprechende perspektivische Explosionsdarstellung einer zweiten Ausführungsvariante eines erfindungsgemäßen Schwenkbeschlages mit alternativ ausgebildetem Bolzen und Lagerwelle,

Figur 6

eine der Figur 3 entsprechende Schnittdarstellung des Schwenkbeschlages gemäß Figur 5,

Figur 7

eine perspektivische Darstellung einer weiteren Ausführungsvariante eines erfindungsgemäßen Schwenkbeschlages mit nur einem Hebel,

Figur 8

eine der Figur 6 entsprechende Darstellung des Schwenkbeschlages gemäß Figur 7,

Figur 9

eine der Figur 1 entsprechende perspektivische Explosionsdarstellung einer weiteren alternativen Ausführungsvariante eines erfindungsgemäßen Schwenkbeschlages mit zwei Hebeln,

Figur 10

eine Draufsicht auf den Schwenkbeschlag gemäß Figur 9 mit montierter Feder,

Figur 11

eine der Figur 1 entsprechende perspektivische Explosionsdarstellung einer nochmals weiteren alternativen Ausführungsvariante eines erfindungsgemäßen Schwenkbeschlages mit zwei Hebeln,

Figur 12

eine der Figur 3 entsprechende Seitenschnittansicht des Schwenkbeschlages gemäß Figur 11,

Figuren 13 und 14

den Figuren 11 und 12 entsprechende Darstellungen einer weiteren Ausführungsvariante eines erfindungsgemäßen Schwenkbeschlages mit nur einem Hebel und

Figur 15

eine perspektivische Ansicht eines Möbels.

Preferred exemplary embodiments are explained in more detail below with reference to the accompanying drawings. Show it:

Figure 1

a schematic perspective exploded view of a first embodiment variant of a pivot fitting according to the invention with a first lever and a second lever,

Figure 2

a plan 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

a side sectional view of the swivel fitting according to Figure 1 ,

Figure 4

a perspective individual representation of the spring and an embodiment of a bolt axially fixing the spring on the first lever,

Figure 5

one of the Figure 1 corresponding perspective exploded view of a second variant 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

a perspective view of a further embodiment of a swivel fitting according to the invention with only one lever,

Figure 8

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 plan view of the swivel fitting according to Figure 9 with mounted spring,

Figure 11

one of the Figure 1 corresponding perspective exploded view of yet another alternative embodiment of a pivot fitting according to the invention with two levers,

Figure 12

one of the Figure 3 corresponding side sectional view of the swivel fitting according to Figure 11 ,

Figures 13 and 14

the Figures 11 and 12 corresponding representations 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.

In the following description of the figures, terms such as above, below, left, right, front, rear, etc. relate exclusively to the exemplary representation and position of the swivel fitting, the first lever, the bearing shaft, the fixing mechanism, the spring and the like selected in the respective figures . These terms are not to be understood as restrictive, i.e. these references can change as a result of different working positions or the mirror-symmetrical design or the like.

In the figures, the reference numeral 1 denotes an embodiment variant of a swivel fitting according to the invention. All design variants Such a swivel fitting 1 are used in particular to swivel adjustment segments 82 relative to a furniture body 81 of a piece of furniture 8, as shown in FIG Figure 15 is shown by way of example.

While those in the Figures 1 to 6 and 9 to 12 have shown embodiments of pivot fittings 1 relative to each other pivotable levers 2 and 3, are in the Figures 7 and 8th as well as embodiment variants shown in FIGS. 13 and 14 of swivel fittings 1 equipped with only one lever 2.

In all of the design 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 that allow screws to pass through for fastening the lever 2, 3 to parts of the furniture 8 that can be pivoted relative to one another .

The first lever 2 is designed in two layers in all of the illustrated embodiments, with a fixing mechanism 7, for example in the form of a latching mechanism, being received between lever heads 22 of the first lever 2 that are cranked away from one another.

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

The ones in the Figures 1 to 4 The shown first variant of a swivel fitting 1 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 attached via a bolt 5 on a side of the lever head 22 of the first lever 2 facing away from the second lever 3 is arranged.

The bolt 5 has a head 54 which rests on an outside of the spring 4 facing away from the first lever 2. The bolt neck, which in the variant 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 one Disk 12, the bolt 5 together with the disk 12, the components of the swivel fitting 1 axially to an axis of rotation D of the first lever 2 and the Bearing shaft 6 fixed. 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.

The bearing shaft 6, which is partially received in the lever head 22, has a first radial toothing 61 for non-rotatable 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.

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.

For a more detailed description of such a fixing mechanism 7 designed as a latch mechanism, refer to DE 10 2017 110 247 A1 referred to, which is hereby referred to.

Other configurations of such a fixing mechanism 7 are also conceivable. For example, instead of the radial toothing 61, axial toothing can also be used as a coupling-in form fit between components. A clamping mechanism based on a frictional connection is also conceivable.

To fix a first end 41 of the spring 4 on the lever 2, a support element 11 designed as a pin protrudes from the lever head 22.

The first end 41 of the spring 4, embodied here as a spiral spring, is hook-shaped with an end piece 43 bent at an angle, or else in an arcuate outlet that engages around the support element 11 in the functional position.

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

As in Figure 3 Also shown, a second neck section 52 of the bolt 5, which is also embodied as a polygon, is received in a rotationally fixed manner in a central opening 63 embodied as a polygonal seat in the bearing shaft 6. The second end 42 of the spring 4 is thus rotatably coupled to the bearing shaft 6 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 of 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 non-rotatably on the bearing shaft 6 counteracts this.

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.

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

One of these retaining bolts extends outward through a bore in the lever head 22 in the direction of the spring 4 and thus forms the support element 11 for the first end 41 of the spring 4.

The latches 71, 72 serve to fix the swivel fitting 1 in a predetermined latching position or to release the bearing shaft 6 relative to the first lever 2 when the swivel fitting 1 moves back.

In contrast to the one in the Figures 1 to 4 The embodiment variant shown of a swivel fitting is in the Figures 5 and 6 The pivot fitting shown for the bolts 5 is formed with a head 54 and only a cylindrical neck section 51.

For the rotational fixation of the second end 42 of the spring 4 with the bearing shaft 6, a polygon 64 formed on the bearing shaft 6 protrudes from the lever head 22 of the first lever 2 in extension of the central opening 63 and rotatably in the end 42 of the spring 4 designed as a polygonal receptacle is recorded.

In this case, the bolt 5 merely serves to axially fix the spring 4 on the first lever 2.

The end of the bearing shaft 6 facing away from the spring 4 is in turn coupled non-rotatably to a second lever 3 via the first radial toothing 61, as shown in FIG Figure 6 is shown.

The Figures 7 and 8th show an embodiment of a swivel fitting 1 with only the first lever 2.

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 connected directly to this radial toothing 61.

Otherwise, this variant corresponds to the one based on Figures 5 and 6 described variant of the swivel fitting 1.

The ones in the Figures 9 and 10 The embodiment variant shown of a swivel fitting 1 essentially corresponds to that in FIG Figures 1 to 4 shown embodiment.

In contrast to the in Figure 1 The embodiment variant shown, the support element 11 is designed as a pin which projects in the direction of the spring 4 and is mounted on the lever head.

In principle, it is also conceivable to design the support element 11 as a section of a lever head 22 of the lever 2 protruding in the direction of the spring 4.

Furthermore, a polygon 65 of the bearing shaft 6 designed as a polygon or toothed ring protrudes from the lever head 22 in the direction of 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 accommodate the second neck section 52 of the bolt 5, which is designed as a square.

Figure 10 shows an example of 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.

The ones in the Figures 11 and 12 Another embodiment variant shown of a pivot fitting 1 shows two lever arms 2, 3, corresponding to the embodiment variant of the pivot fitting 1 shown in FIGS. 9 and 10.

At its end facing the spring 4, the bearing shaft 6 in turn has an end piece 64 that matches the shape of the polygon receiving the second end 42 of the spring 4 and that connects to a polygon 65 of the bearing shaft 6 which is designed as a polygon or a toothed ring and which faces the spring 4 protrudes from the lever head 22 of the first lever 2.

The Figures 13 and 14th finally show an embodiment variant of a swivel fitting 1 according to the invention, which essentially corresponds to that in Figure 11 and 12 the embodiment variant shown, only without a second lever 3.

The Figure 15 shows an exemplary structure of a piece of furniture 8 and a body 81 and an adjustment segment 82 pivotably held on the body 81, the adjustment segment 82 being pivotably held on the body 81 of the piece of furniture 8 via such a pivot fitting 1.

List of reference symbols

1

Swivel fitting

2

first lever

21st

Lever arm

22nd

Lever head

3

second lever

31

Lever arm

32

Toothed ring

4th

feather

41

first end

42

second end

43

End piece

5

bolt

51

Neck section

52

Neck section

53

Neck section

54

head

6

Bearing shaft

61

Radial teeth

62

Radial teeth

63

opening

64

Polygon

65

Polygon

7th

Fixing mechanism

71

Latch

72

Latch

8th

Furniture

81

Furniture body

82

Adjustment segment

11

Support element

12

disc

D.

axis

V

Adjustment direction

R.

Return direction

Claims (12)

Swivel fitting (1), in particular for adjustment segments on furniture - A first lever (2) which is pivotably mounted on a bearing shaft (6), - A fixing mechanism (7) with which the lever (2) can be fixed in different angular positions within a predetermined angle (a) relative to the bearing shaft (6), - A spring (4) for transmitting a torque to the lever (2), characterized in that - 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 non-rotatably to the bearing shaft (6). Swivel fitting according to Claim 1, characterized in that a support element (11), to which the first end (41) of the spring (4) is coupled, protrudes from a side of the first lever (2) facing the spring (4). Pivot fitting according to claim 2, characterized in that the support element (11) is designed as an end of a retaining bolt protruding in the direction of the spring (4) of a latching pawl (72) of the fixing mechanism (7) pivotally mounted on the first lever (2), the latching pawl (72) is in a latching position of the swivel fitting (1) in engagement with a toothing (61, 62) of the bearing shaft (6) for the rotationally fixed fixing of a second lever (3) or a furniture segment pivotable relative to the first lever (2). Swivel fitting according to claim 2, characterized in that the support element (11) is designed as a pin protruding in the direction of the spring (4). Swivel fitting according to Claim 2, characterized in that the support element (11) is designed as a section of a lever head (22) of the lever (2) protruding in the direction of the spring (4). Swivel 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 received. Swivel 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. Swivel fitting according to claims 6 and 7, characterized in that the bolt (5) has a first neck section (53) designed as a polygon which is held in a rotationally fixed manner in the second end (42) of the spring (4) designed as a polygonal seat. Swivel fitting according to claim 8, characterized in that the bolt (5) has a polygonal second neck section (52) which is held in a rotationally fixed manner in the central opening (63) of the bearing shaft (6) made as a polygonal receptacle. Swivel fitting according to claims 6 and 7, characterized in that a polygon (64) is formed on the bearing shaft (6) in extension of the central opening (63) and rotatably in the second end (42) of the spring (4) designed as a polygonal receptacle is recorded. Swivel fitting according to claim 10, characterized in that the bolt (5) has a cylindrical neck section (51) which is received in a cylindrically shaped central opening (63) in the bearing shaft (6). Furniture (8) with a body (81) and an adjustment segment (82) held pivotably on the body (81), characterized in that the adjustment segment (82) has at least one swivel fitting (1) according to one of the preceding claims on the body (81 ) is attached.

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