EP2609270B1 - Furniture hinge - Google Patents

Description

The invention relates to a furniture hinge with at least one control cam and at least one spring, the spring being designed as a leg spring and having a circular cross-section at least in some areas, the control cam running on the spring to generate a closing force and / or opening force.

The invention further relates to a piece of furniture with at least one movable furniture part, the furniture part being movably supported via at least one furniture hinge. Such furniture hinges are already known in a large number from the prior art. A disadvantage of such furniture hinge is that due to the high spring load for generating the closing and / or opening force, the spring breaks after a certain number of movements of the furniture hinge.

Such a furniture hinge with at least one control cam and at least one spring, the spring being designed as a leg spring and having a circular cross-section at least in some areas, the control cam running on the spring to generate a closing force and / or opening force approximately in the AT 005 924 U1 shown. Furthermore, from the DE 39 12 494 A1 a furniture hinge with a control cam and at least one spring is known, in which the control cam runs on the spring to generate a closing force and / or opening force and in which a sliding body is attached to the spring, on which the control cam runs.

The object of the invention is to avoid the disadvantage described above and to provide a furniture hinge which is improved over the prior art.

This object is achieved by a furniture hinge with the features of claim 1.

Using a sliding body increases the lifespan of the spring, which contributes to a longer-lasting furniture hinge.

Further advantageous embodiments of the invention are defined in the dependent claims.

It has been found to be particularly advantageous if the furniture hinge has a fitting part for attachment to a first furniture part and a hinge cup for attachment to a second furniture part, the hinge cup being pivotably connected to the fitting part via at least one articulated lever, the control cam being formed on the articulated lever is. The design of the control cam on the articulated lever can be implemented with little technical effort, whereby the costs can be kept low.

According to a preferred embodiment it can be provided that the sliding body is attached to the spring. The slider can be attached to the spring in a technically simple manner, as can the attachment to the control cam.

Furthermore, it can preferably be provided that the sliding body is at least partially - preferably essentially completely - made of plastic and / or that the spring is made of metal - preferably steel. The design of the sliding body from plastic is technically feasible and the shaping, such as with the help of an injection molding process, is preferably feasible, the design of the spring or springs made of metal can guarantee a long-lasting, constant spring property, which has been shown that specifically the training made of steel can be particularly well suited.

It has proven to be particularly advantageous if the plastic of the sliding body is designed as a thermoplastic plastic - preferably polyoxymethylene (POM). Thermoplastic plastics can have good stiffness values and good coefficients of friction, especially the thermoplastic material polyoxymethylene (POM, also called polyacetal or polyformaldehyde) - due to its high stiffness, its low coefficient of friction and its excellent dimensional stability and thermal stability - especially for a precision part like the Slider are preferably used.

It can particularly preferably be provided that the sliding body is attached to one end of the spring. The sliding body can be attached to the spring, especially at its end, in a simple manner, such as by clipping it on.

It has been found to be particularly advantageous if the sliding body has at least one reservoir for a lubricant. By forming a reservoir in the sliding body, the control cam and / or the spring can be supplied with a lubricant that can be introduced into the reservoir.

According to the invention it is provided that the sliding body has an outer contour deviating from the cylindrical shape. With an outer contour of the sliding body that deviates from the cylindrical shape, a larger contact surface with the control cam can be achieved, as a result of which point abrasion can be reduced.

Furthermore, it is provided according to the invention that the sliding body has an essentially cylindrical cavity. By forming an essentially cylindrical cavity in the sliding body, this can be attached to the spring in a simple manner - in this preferred case pushed on.

It has been found to be advantageous if the sliding body has at least one control cam or at least one projection. By forming a control cam or a projection on the sliding body, the sliding body can also influence the control cam.

It has been found to be particularly advantageous if the sliding body has a curved plane, the curved plane being essentially straight in a transverse dimension and being curved in a longitudinal dimension. It can thus be achieved that the bearing surface of the sliding body on the spring or on the control cam is enlarged, so that point loads can be avoided.

According to a preferred embodiment it can be provided that the sliding body has a channel-shaped groove. As a result of the formation of a channel-shaped groove on the sliding body, a spring with a circular cross-section can slide in the channel-shaped groove, which can also lead to an enlargement of the bearing surface.

Furthermore, it can preferably be provided that the sliding body is designed as a separate assembly.

It can also preferably be provided that the sliding body is formed in one piece. In particular, a one-piece design of the sliding body can contribute to a simple manufacturing process for the sliding body.

According to a possible embodiment it can be provided that the furniture hinge has at least two sliding bodies. The formation of two sliding bodies in the furniture hinge allows a symmetrical design on the furniture hinge, which can contribute to an even load on the furniture hinge during the closing and opening movements.

According to a preferred embodiment it can be provided that the spring has a substantially cylindrical section at least at one end. This can also contribute to the fact that the sliding body can simply be pushed onto the end of the spring, as a result of which simple assembly can be achieved.

The spring is advantageously designed as a leg spring, whereby a constant bending moment can be achieved.

Specifically, protection is also sought for a piece of furniture with at least one movable furniture part, the furniture part being movably supported by at least one furniture hinge according to at least one of the described embodiments.

Further details and advantages of the present invention are explained in more detail below on the basis of the description of the figures with reference to the exemplary embodiments shown in the drawings.

Fig. 1

eine perspektivische Darstellung eines Möbelscharniers,

Fig. 2

eine perspektivische Explosionsdarstellung des Möbelscharniers in Figur 1,

Fig. 3a und 3b

zwei perspektivische Darstellungen einer Feder und eines daran angeordneten Gleitkörpers,

Fig. 4

die Draufsicht eines Möbelscharniers,

Fig. 5

den Schnitt durch die Seitenansicht eines Möbelscharniers wie in Figur 4 dargestellt,

Fig. 6

eine Detailansicht durch den Schnitt des in Figur 5 dargestellten Möbelscharniers,

Fig. 7

eine perspektivische Ansicht eines Möbelscharniers,

Fig. 8

eine Detailansicht des in Figur 7 dargestellten Möbelscharniers,

Fig. 9

ein weiteres Ausführungsbeispiel eines Möbelscharniers mit einem Gleitkörper mit Reservoir in perspektivischer Ansicht,

Fig. 10

eine Detailansicht zur Figur 9,

Fig. 11a und 11b

zwei perspektivische Ansichten einer Feder und eines daran angeordneten Gleitkörpers mit Reservoir,

Fig. 12

eine perspektivische Ansicht eines Möbelscharniers, bei dem an einem Gleitkörper eine Abdeckung entfernt wurde,

Fig. 13

eine Detailansicht des Gleitkörpers ohne Abdeckung wie in Figur 12 dargestellt,

Fig. 14a und 14b

eine Explosionsdarstellung eines Gelenkhebels eines Möbelscharniers mit Gleitkörper und Schenkelfeder und der Gelenkhebel in perspektivischer Darstellung in zusammengebauten Zustand,

Fig. 15

ein Möbel mit zwei Möbelscharnieren und einem bewegbaren Möbelteil.

Show in it:

Fig. 1

a perspective view of a furniture hinge,

Fig. 2

a perspective exploded view of the furniture hinge in Figure 1 ,

Figures 3a and 3b

two perspective representations of a spring and a sliding body arranged on it,

Fig. 4

the top view of a furniture hinge,

Fig. 5

the section through the side view of a furniture hinge as in Figure 4 shown,

Fig. 6

a detailed view through the section of the in Figure 5 illustrated furniture hinge,

Fig. 7

a perspective view of a furniture hinge,

Fig. 8

a detailed view of the in Figure 7 illustrated furniture hinge,

Fig. 9

a further embodiment of a furniture hinge with a sliding body with reservoir in perspective view,

Fig. 10

a detailed view of the Figure 9 ,

Figures 11a and 11b

two perspective views of a spring and a sliding body with a reservoir arranged thereon,

Fig. 12

a perspective view of a furniture hinge in which a cover has been removed from a sliding body,

Fig. 13

a detailed view of the sliding body without cover as in Figure 12 shown,

Figures 14a and 14b

an exploded view of an articulated lever of a furniture hinge with sliding body and leg spring and the articulated lever in a perspective view in the assembled state,

Fig. 15

a piece of furniture with two furniture hinges and a movable piece of furniture.

Figure 1 shows the perspective view of a furniture hinge 100. This furniture hinge 100 has a fitting part 101 for fastening to a first furniture part (not shown) and a hinge cup 102 for fastening to a second furniture part (not shown). The hinge cup 102 is fastened to the second furniture part via its fastening flange 106. In this exemplary embodiment, an adjusting device 107 is formed on the fitting part 101. The fitting part 101 is pivotably connected to the hinge cup 102 via an articulated lever 103. In the inner cavity 108 of the hinge cup 102 is an optional one

Damping device 105 is arranged with a push-in slide which can dampen the closing process of the furniture hinge 100 and thus of the movable furniture part.

In this preferred exemplary embodiment, two sliding bodies 1 and 11 are arranged over springs 2 and 12, which are not visible in this illustration. The control cam 3 and 13, not visible in this figure, runs on these sliding bodies 1 and 11 (see also FIG Figure 2 ).

Figure 2 FIG. 13 shows an exploded perspective view of the furniture hinge 100 as in FIG Figure 1 shown. In this exemplary embodiment, the furniture hinge 100 is designed as a single-point hinge; a sliding body is of course also conceivable and desirable for other hinges, such as four-point hinges.

In this particularly preferred embodiment, the furniture hinge 100 has the two control cams 3 and 13 on the articulated lever 103, which can be connected to the hinge cup 102 via the bolt 104 and can be connected to the fitting 101 via the adjusting device 107. In this exemplary embodiment, the sliding body 1, which is preferably embodied in one piece, is slipped over the spring end on the spring 2. This sliding body 1 preferably has better sliding properties than metal. The fastening device 4, which is preferably designed in the form of a snap connection, can after it has been pushed on (see FIG Figure 3a and 3b ) snap into the windings of the spring 2, which is preferably designed as a leg spring, whereby it can be ensured that the sliding body 1 can maintain its position relative to the spring 2. In the assembled state, the sliding body 1 runs via the control cam 3 of the articulated lever 103 during the opening and closing processes.

In this preferred embodiment, the articulated lever 103 has the further control cam 13, a sliding body 11 is also arranged on the control cam 13.

In this preferred exemplary embodiment, the two springs 2 and 12 are fastened in the furniture hinge 100 on the outside of the hinge cup 102 (see description of the figures in FIG Figures 7 and 8 ).

Figure 3a is a detailed representation of a spring 12 and a sliding body 11 attached to this spring 12 in a perspective view. The sliding body 11 is fixedly connected to the spring 12 via the fastening device 14. As can be clearly seen from this detailed illustration, the sliding body 11 has an outer contour 6 that deviates from the cylindrical shape, in this case, among other things, a projection 8 on which a control cam 7 is formed. The outer contour 6 also preferably has a flat surface (not shown) which corresponds to the control cam 13 of the articulated lever 103.

In this preferred exemplary embodiment, the sliding body 11 is made of a plastic - a thermoplastic such as polyoxymethylene (POM) is particularly preferred. In this preferred exemplary embodiment, the spring 12 is made of a metal - steel is particularly preferred.

Figure 3b shows a perspective view of a spring 2 on which a sliding body 1 is attached. The sliding body 1 was pushed over the leg spring 2 equipped with a circular cross-section and with coils.

The sliding body 1 has a control cam 7. This control cam 7 in turn has a curved plane 70, this curved plane 70 being essentially straight in its transverse extent 72 and being curved in its longitudinal extent 71. As a result, it can be achieved that the bearing surface of the sliding body 1 is not only supported selectively on a control cam of an articulated lever (also not shown), but it is supported at least along a line. Thus point loads can be avoided.

Figure 4 shows a plan view of a furniture hinge 100, which has two sliding bodies 1 and 11, which run on the control cams 3 and 13 (not shown), the two sliding bodies 1 and 11 are arranged on the springs 2 and 12 (not shown) for generating a closing force and / or opening force.

Figure 5 FIG. 13 shows a side view of the furniture hinge 100 in section of the furniture hinge of FIG Figure 4 . The fitting part 101 is connected to the hinge cup 102 via the articulated lever 103.

When the fitting part 101 is pivoted relative to the hinge cup 102, the sliding body 1 runs off together with the spring 2 on the control cam 3 in this exemplary embodiment.

In a detailed view - shown in the Figure 6 It can be clearly seen that this sliding body 1 has an outer contour 6 which deviates from the cylindrical shape and which is revealed by a further control cam 7 and the projection 8. The sliding body 1 is attached to the spring 2 and this sliding body 1 runs off the control cam 3 to generate a closing force and / or opening force. It would of course also be conceivable that the control cam 3 is not formed on the articulated lever 103 as in this preferred exemplary embodiment, but that the sliding body 1 has the control cam 7 alone to generate a closing and / or opening force, this control cam 7 then naturally being a different one Would have a contour. In this exemplary embodiment, the sliding body 1 has an essentially cylindrical cavity, in which the spring 2, which has an essentially cylindrical section at least at one end, is arranged.

Figure 7 shows a further perspective illustration of a furniture hinge 100, as just described. The detailed view of the Figure 8 It can be clearly seen that the spring 2 is preferably designed as a leg spring. One end 9 of the spring 2 is attached to the hinge cup 102 and the turns of the leg spring 2 are supported on the support point 10 of the hinge cup 102. The support point 10 is designed as a contact surface for the turns of the spring 2. What has just been mentioned similarly relates to the spring 12 on the other side of the hinge cup 102.

Figure 9 shows the perspective illustration of a further exemplary embodiment of a furniture hinge 100 with sliding bodies 21 and 31.

As in the detailed representation of the Figure 10 shown, the sliding body 21 has a cover 22 which can be designed to be removable. Below the cover 22 there is a reservoir 5 in the sliding body 21, which is used to hold a lubricant (not shown). In this exemplary embodiment, the sliding body 21 is now fixedly connected to the control cam 3. Over the entire service life of the furniture hinge 100, the sliding body 21 releases the lubricant from its reservoir 5 to the bearing point between the spring 2 and the control cam 3.

Figure 11a shows a detailed representation of the leg spring 12 and the sliding body 31 arranged thereon, which has a cover 32 under which there is a reservoir 5 for receiving a lubricant.

Figure 11b shows a detailed representation in a perspective view of the spring 2 and a sliding body 21 arranged thereon. In this perspective bottom view of the sliding body 21 it can be clearly seen that the sliding body 21 has an opening 50 through which a lubricant can escape and thus also contribute to a positive sliding behavior can.

Likewise, this underside of the sliding body 21 is not flat, but the sliding body 21 has a curved plane 70, the curved plane 70 being essentially straight in its transverse extent 72 and curved in its longitudinal extent 71. In this illustration it can again be clearly seen that the spring 2 is designed as a leg spring and has a circular cross section, which makes it easier to arrange the spring 2 on the sliding body 21.

Figure 12 shows a further perspective illustration of a as just in FIG Figure 9, 10 and 11 furniture hinge 100 described, wherein in this illustration the sliding body 31 has a closed cover 32 and the sliding body 21 is shown without the cover 22.

When the fitting part 101 is pivoted relative to the hinge cup 102, the spring 2 in the sliding body 1 runs off the control cam 3 in this exemplary embodiment.

In the detailed view of the Figure 13 the reservoir 5 can be seen, which is located in the interior of the sliding body 21. This reservoir 5 can be filled with a lubricant (not shown) and then lubricates the bearing point between the spring 2 and the control cam 3 of the articulated lever 103 of the furniture hinge 100.

Figure 14a shows the articulated lever 103 of a furniture hinge in a perspective view. The articulated lever 103 has, among other things, the control cam 3. The sliding body 1, which is embodied in one piece in this preferred exemplary embodiment, can be pushed over this control cam 3 and thus fastened to the articulated lever 103.

In this exemplary embodiment, the sliding body 1 has a channel-shaped groove 60 which is used to accommodate the tongue 2 ( Figure 14b ) is intended. In order to obtain the largest possible support surface or support line, the radius of this channel-shaped groove 60 corresponds approximately to the radius of the cross-section of the tongue 2. For this purpose, the tongue 2 is preferably designed with a circular cross-section at least in its end regions.

In the exploded view of the Figure 14a it can also be clearly seen that the sliding body 1 and 11 is designed as a separate assembly. This makes it possible to attach such a sliding body 1 and 11 subsequently - to already existing furniture hinges - which has the advantage that it is not absolutely necessary to replace the entire furniture hinge if necessary, but it is sufficient to replace existing furniture hinges with this sliding body 1 and 11 to be retrofitted. It is of course also contemplated to manufacture new furniture hinges that have such sliding bodies 1 and 11.

Figure 15 shows a piece of furniture 200 with a movable furniture part 112 and a first furniture part 111, which is designed as a furniture body.

The furniture body 111 is connected to the movable furniture part 112 via two furniture hinges 100.

The furniture hinges 100 are fastened with their fittings 101 on the first furniture part 111 and fastened with their hinge pots 102 on the second, movable furniture part 112. As a result, the furniture part 112 is movably supported on the furniture body 111.

Even if the invention has been specifically described on the basis of the exemplary embodiments shown, it goes without saying that the subject matter of the application is not limited to these exemplary embodiments. Rather, it goes without saying that measures and modifications that serve to implement the concept of the invention are entirely conceivable and desirable. As already mentioned in the description of the figures, a sliding body could be used with hinges other than those shown, such as four-point hinges. It would also be conceivable that the control cams are not formed on the articulated lever, but rather on the sliding body itself or also on the sliding body and on the articulated lever. It would of course also be conceivable that the control cam is formed on the spring.

Claims (15)

1. Furniture hinge (100) with at least one control cam (3, 13) and at least one spring (2, 12), wherein the spring (2, 12) is formed as a leg spring and has a circular cross-section at least in some areas, wherein the control cam (3, 13) moves along on the spring (2, 12) in order to produce a closing force and/or opening force, characterized in that a sliding element (1, 11, 21, 31), on which the control cam (3, 13) moves along, is attached to the spring (2, 12), wherein the sliding element (1, 11, 21, 31) has a substantially cylindrical cavity, which corresponds with the spring (2, 12), wherein the sliding element (1, 11, 21, 31) has an outer contour (6) differing from the cylinder shape.
2. Furniture hinge according to claim 1, characterized in that the furniture hinge (100) has a fitting (101) for attachment to a first furniture part (111) and a hinge cup (102) for attachment to a second furniture part (112), wherein the hinge cup (102) is swivellably connected to the fitting (101) via at least one articulated lever (103), wherein the control cam (3, 13) is formed on the articulated lever (103).
3. Furniture hinge according to claim 1 or 2, characterized in that the sliding element (1, 11, 21, 31) is pushed onto the spring (2, 12).
4. Furniture hinge according to one of claims 1 to 3, characterized in that the sliding element (1, 11, 21, 31) is at least partially - preferably substantially completely - formed from plastic and/or in that the spring (2, 12) is formed from metal - preferably from steel.
5. Furniture hinge according to claim 4, characterized in that the plastic of the sliding element (1, 11, 21, 31) is formed as a thermoplastic plastic - preferably polyoxymethylene (POM).
6. Furniture hinge according to one of claims 1 to 5, characterized in that the sliding element (1, 11, 21, 31) is attached to one end of the spring (2, 12).
7. Furniture hinge according to one of claims 1 to 6, characterized in that the sliding element (1, 11, 21, 31) has at least one reservoir (5) for a lubricant.
8. Furniture hinge according to one of claims 1 to 7, characterized in that the sliding element (1, 11, 21, 31) has at least one control cam (7) and/or at least one projection (8).
9. Furniture hinge according to one of claims 1 to 8, characterized in that the sliding element (1, 11, 21, 31) has a curved plane (70), wherein the curved plane (70) is formed substantially straight in a transverse extension (72) and is formed curved in a longitudinal extension (71).
10. Furniture hinge according to one of claims 1 to 9, characterized in that the sliding element (1, 11, 21, 31) has a channel-shaped groove (60).
11. Furniture hinge according to one of claims 1 to 10, characterized in that the sliding element (1, 11, 21, 31) is formed as a separate assembly.
12. Furniture hinge according to one of claims 1 to 11, characterized in that the sliding element (1, 11, 21, 31) is formed in one piece.
13. Furniture hinge according to one of claims 1 to 12, characterized in that the furniture hinge (100) has at least two sliding elements (1, 11, 21, 31).
14. Furniture hinge according to one of claims 1 to 13, characterized in that the spring (2, 12) has a substantially cylindrical cross-section at least at one end.
15. A piece of furniture (200) with at least one movable furniture part (112), wherein the furniture part (112) is movably mounted via at least one furniture hinge (100) according to one of claims 1 to 14.

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