EP1344885B1 - Fitting for furniture with brake and damping device - Google Patents

Abstract

The furniture fitment comprises a hinge arm (2) fixable on the furniture part and a hinge top (5) fixable on a different furniture part and connected by articulated levers (3, 4). A follower plate (8) is mounted displaceable in the hinge top and can be actuated directly or indirectly by the articulated lever. The plate sets at least one brake plate (15, 16) in rotation in the hinge top. The brake plate has at least a first brake surface which slides on at lea-st one associated second brake surface which can be fixed or movable relative to the first. the follower plate can be linearly displaceable in the area of the hinge top closest the bottom.

Description

The invention relates to a furniture fitting, in particular a furniture hinge, with brake and damping device, according to the preamble of independent claim 1.

Damping and braking devices are known in various embodiments in the art and are used in a variety of applications.

For movable furniture parts are currently damping elements in the form of simple buffers on the market. Such buffers are very good for noise mitigation, but are not suitable to reduce kinetic energy of the moving furniture parts in the required amount.

A further development of a deformable, integrated in a hinge buffer is in the DE-OS 27 08 545 described. In this case, an elastic damping element between the hinge arms of a furniture hinge is arranged and deforms shortly before reaching the open position of the hinge.

A similar damping element for furniture hinges shows the AT-PS 349 931 , Here, an elastic damping member between the hinge arm and the hinge cup is arranged, on which the hinge arm is supported damping during its rotational movement.

Also known include hydraulic or pneumatic shock absorbers having a piston-cylinder arrangement with two working chambers, between which a liquid or gaseous medium flows, which causes a braking and damping effect. Such dampers have a high stiction, due to piston rod and piston seals, the one Reduction of the size limits sets. Furthermore, they are expensive and expensive and are therefore not as integrable damper in furniture fittings.

In furniture, especially drawers and furniture doors, also based on friction brake and damping elements are usually used in conjunction with spring elements. Such brake elements are in the DE 199 15 164 A1 or the DE 197 17 937 A1 disclosed.

document US-A-5,269,043 discloses a furniture hinge with a built-in hinge cup damping device.

These friction brake elements can lead to so-called Stip-Slick effect due to their high static friction, which is noticeable by rattling, sticking, etc. of the part to be braked. Likewise, wear in friction dampers plays a major role, especially when masses with high kinetic energy must be braked.

The object of the invention is to propose a furniture fitting, in particular a furniture hinge, with an integrated brake and damping device, which is able to reliably and reliably decelerate and dampen a movable furniture part during the closing or opening process.

Furthermore, vibrations or impact noise during closing should be avoided, i. the movable furniture part, which may have different mass and speed, should travel over a certain distance, e.g. slow down the closing angle, almost wear-free.

The solution of this object is achieved according to the invention by the features of independent claim 1.

Advantageous embodiments and further developments of the invention are specified in the subclaims.

According to the invention a slidably mounted in the hinge cup, directly or indirectly actuated by the hinge plate driver plate is provided, the at least one rotatably mounted in the hinge cup brake rotates, wherein the brake disc has at least one first braking surface on at least one associated, fixed or with respect to the first braking surface movable second braking surface slides.

The essence of the invention lies in the implementation of the linear adjusting movement of the driving plate in a rotational movement of at least one, preferably circular brake actuator. This results in a maximum braking surface, based on the dimensions of the hinge cup, which is formed by the surfaces of the brake disc. Preferably, the outer diameter of the brake actuator substantially equal to the inner diameter of the hinge cup.

Depending on the type of motion transmission between the driver plate and the brake plate is also a considerably larger compared to the linear movement distance of the drive plate "braking distance" reached, which is defined by the rotation angle of the brake actuator. Furthermore, the relative speed of the brake disc is greater compared to the speed of the driver plate, which also has a positive effect on the achievable braking effect.

The driver plate is preferably arranged in the vicinity of the bottom of the hinge cup and guided there linearly displaceable in a guide groove.

The hinge cup is closed by a bottom plate whose inner surface forms the fixed braking surface on which the brake plate rests.

Preferably, the at least one brake plate is rotatably mounted on the bottom plate and arranged between the bottom plate and the driver plate.

In a preferred embodiment of the invention, the driver plate has at least one driver pin which engages in a driving opening of the brake actuator arranged eccentrically to the axis of rotation. In this way, the linear movement of the driver plate is converted into a rotational movement of the brake actuator about its axis of rotation. The transmission ratio is determined by the distance of the entrainment pin from the axis of rotation of the brake actuator.

In a further preferred embodiment of the invention, a second brake plate is rotatably mounted in the hinge cup, wherein the movable braking surface is formed by the second brake plate.
In this embodiment, the two brake plates are arranged one above the other.
The driver plate in this case has a second driver pin, which engages in a driver opening of the second brake actuator, wherein the driver pin of the driver plate and the associated driving openings of the two brake plates are arranged around the axis of rotation of the brake plates such that movement of the driver plate, the two brake plates in opposite rotation added.

By using two or more brake actuators, the regenerable braking force can be substantially increased. By the opposite movement, a doubling of the speed of the brake plates relative to each other and thereby also a doubling of the relative "braking distance" is achieved.

Preferably, the actuation of the driver plate by the hinge lever takes place only in the region of a defined closing angle of the Furniture fittings. As a result, the range of action of the brake and damping device can be adapted to the respective conditions.

The driver plate is preferably actuated via two separate, one-sided loaded contact surfaces of the toggle lever. When closing the furniture hinge, an edge of the articulated lever meets a driving lug of the driver plate and thus shifts the driver plate linearly by a short distance. At the same time, the brake plates are set in rotation. When opening the furniture hinge two arranged on the drive plate tabs are taken by return pins, which are arranged on the toggle lever. As a result, the drive plate and the brake plates are moved back to their original position.

In a further embodiment of the invention, the outer diameter of the brake actuator is chosen to be much smaller than the inner diameter of the hinge cup. The brake plate is surrounded by a brake sprocket and partially provided with an external toothing, which meshes with the internal toothing of the brake sprocket, whereby the brake sprocket is rotated.

Advantageously, an increase in the "braking force" is achieved in that the surfaces of the at least one brake ring gear form additional movable braking surfaces.

In all embodiments it can be provided that between the fixed and movable braking surfaces, a highly viscous liquid medium is introduced, the highly viscous medium is exposed by its adhesion to the surfaces of internal molecular friction and the kinetic energy of the mass to be intercepted is converted into frictional heat.

In comparison to the known brake and damping devices on furniture fittings, the invention offers significant advantages.

It can be defined whether the damping and braking effect should act over the entire closing range or only in a certain closing angle.
Furthermore, a very compact design of the furniture fitting is achieved because no external damping elements are necessary. The braking and damping device is integrated in the hinge and not visible from the outside.
Overall, the furniture band is unchanged on the outside, ie there is no change in the design necessary. The size remains the same.
Furthermore, the adjustment, such as sides and height adjustment, unchanged. The assembly on the piece of furniture is done as before.

Another advantage is that the proposed brake and damping elements are quite inexpensive to produce and can be integrated in the furniture fitting.

Figur 1:

eine Draufsicht auf das erfindungsgemäßes Möbelscharnier in einer ersten Ausführungsform;

Figur 2:

einen seitlichen Schnitt durch Möbelscharnier gemäß Figur 1 in halb geschlossener Stellung;

Figur 3:

eine teilweise geschnittene, perspektivische Ansicht des Mobelscharniers;

Figur 4:

eine Explosionsdarstellung des Möbelscharniers;

Figur 5:

einen Schnitt durch die im Scharniertopf angeordnete Brems und Dämpfungsvorrichtung;

Figur 6:

eine Detailansicht der Betätigung der Mitnehmerplatte durch den Gelenkhebel beim Schließen des Scharniers;

Figur 7:

eine Detailansicht der Betätigung der Mitnehmerplatte durch den Gelenkhebel bei geschlossenem Scharnier;

Figur 8:

eine Detailansicht der Betätigung der Mitnehmerplatte durch den Gelenkhebel beim Öffnen des Scharniers;

Figur 9:

eine teilweise geschnittene, perspektivische Ansicht des Mobelscharniers in einer zweiten Ausführungsform;

Figur 10:

eine Explosionsdarstellung des Möbelscharniers gemäß Figur 9;

Figur 11:

eine Detailansicht der Betätigung der Mitnehmerplatte durch den Gelenkhebel beim Schließen des Scharniers gemäß Figur 9;

Figur 12:

eine Detailansicht der Betätigung der Mitnehmerplatte durch den Gelenkhebel beim Öffnen des Scharniers gemäß Figur 9.

The invention will be explained in more detail with reference to several embodiments with reference to the drawing figures. From the drawings and the description there are further features, advantages and applications of the invention.
It shows:

FIG. 1:

a plan view of the inventive furniture hinge in a first embodiment;

FIG. 2:

a lateral section through furniture hinge according to Figure 1 in the half-closed position;

FIG. 3:

a partially sectioned, perspective view of the furniture hinge;

FIG. 4:

an exploded view of the furniture hinge;

FIG. 5:

a section through the arranged in the hinge cup brake and damping device;

FIG. 6:

a detailed view of the operation of the drive plate by the hinge lever when closing the hinge;

FIG. 7:

a detailed view of the actuation of the driver plate by the hinge lever with the hinge closed;

FIG. 8:

a detailed view of the operation of the driver plate by the hinge lever when opening the hinge;

FIG. 9:

a partially sectioned perspective view of the furniture hinge in a second embodiment;

FIG. 10:

an exploded view of the furniture hinge of Figure 9;

FIG. 11:

a detailed view of the operation of the driver plate by the hinge lever when closing the hinge of Figure 9;

FIG. 12:

a detailed view of the operation of the driver plate by the hinge lever when opening the hinge of Figure 9.

Figures 1 and 2 show a furniture hinge 1, by means of which a furniture part, e.g. a furniture door, can be movably attached to a furniture body. The furniture door can thereby be opened in the region of an opening angle, wherein it is preferably brought automatically in the closed position in the region of a closing angle through the furniture hinge 1. However, this automatic closing movement has to be slowed down and damped, as otherwise the furniture door hits hard on the furniture carcass.

The furniture hinge 1 comprises a hinge arm 2 to be fastened to the furniture door, which is pivotably connected to a hinge cup 5 via an outer and an inner articulated lever 3, 4. The hinge cup is closed by a bottom plate 6 and includes the braking and damping device 7, which generates the erfoderliche braking effect when closing the furniture hinge.

As shown in Figure 3, a driver plate 8 is arranged in the region of the pot bottom, which is mounted linearly displaceable in the direction of arrow 9. The displacement takes place by the movement of the articulated levers 3, 4 in the direction of arrow 10, wherein a joint edge 11 of the inner articulated lever 4 a Mitmehmernase 12 of the cam plate 8 is actuated. Below the driver plate 8, two preferably circular brake plates 15, 16 are arranged, in each of which an associated driving pin 13, 14 of the driver plate 8 engages.

Figure 4 shows an overview of the furniture hinge 1 with the hinge arm 2 and the hinge cup 5, which are connected to each other via articulated levers 3, 4, a hinge spring 18 and bearing pin 19. A driver pin 14 of the driver plate 8 engages in an associated driving opening 23 of the upper brake actuator 15. The other driver pin 13 engages by an exemption 24 of the upper brake actuator 15 in a driving opening 28 of the lower brake disc 16. The exemption 24 is designed as a concentric slot, so that the movement of one brake disc 15 is not hindered by the other brake disc 16 and vice versa. The two brake plates 15, 16 are rotatably mounted on centric bores 22, 27 on a bearing journal 31 of the bottom plate 6. The bottom plate 6 is e.g. by means of an external thread in the hinge cup 5 screwed.

Due to the fact that the brake plates 15, 16 execute a rotational movement, which is caused by the linear movement of the driver plate 8, the driving openings 23, 28 of the brake plates 15, 16 carried out with a certain play to a clamping of the driving pins 13, 14 in the driving openings 23, 28 to avoid.

The layered structure of the braking device is very well seen in Figure 5. The sequence of movement of the device is apparent from Figures 6 to 8.

Due to the rotational movement of the articulated lever 4 in the furniture band in the direction of arrow 10, a hinge edge 11 strikes a driving lug 12 of the driver plate 8 and moves it linearly in the direction of arrow 9 in a guide groove 33 of the hinge cup 5. By this linear movement of the driver plate 8, the eccentrically articulated brake plates 15th 16 offset in a rotational movement. By nesting the articulated brake plates 15, 16, two or more brake plates can be moved simultaneously. If several brake plates 15, 16 are used, these rotate against each other, thereby doubling the relative speed between the rotatably mounted brake plates 15, 16 is achieved. The braking effect is achieved by the friction between the braking surfaces 32 of the driver plate 8, the brake plates 15, 16 and the bottom plate 6.

The closed end position of the furniture hinge 1 is shown in FIG. 7.
When opening the hinge 1 in the direction of arrow 10 engage the return lever 34 arranged on the hinge lever 4 ensprechenden tabs 20, 21 of the driver plate and move them back in the direction of arrow 9 to the return pin 34 by the rotational movement of the articulated lever 4 out of engagement with the tabs 20, 21st reach and the hinge can be opened without braking, as shown in Figure 8.

FIGS. 9 to 12 show a furniture hinge 1 with a modified embodiment of the braking and damping device 7.
The structure and operation of the brake and damping device is similar to the first embodiment.

Significant difference from the first embodiment is the structure of the brake plates 35, 38 and the additional use of brake sprockets 37, 40, which surround the respectively associated brake plates 35, 38.
The diameter of the brake plates 35, 38 is less than the inner diameter of the hinge cup 5. In addition to the above-described driving openings 23, 28 and exemptions 24, 29 have the brake plates 35, 38 centric bearing journals, with which they are rotatably mounted in a bearing bore 42 of the bottom plate 41.
Further, the brake plates 35, 38 on its outer periphery partially on a toothing 36, 39 which cooperates with a respective internal toothing of the associated brake sprockets 37, 40.
The driving pin 14 of the drive plate 8 engages in the driving opening 23 of the upper brake disc 35 and first pushes the outer teeth 36 of the upper brake disc 35 into engagement with the internal teeth of the upper brake toothed rim 37. The opposite driving pin 13 engages through the release 24 into the driving opening 28 of the lower brake actuator 38 and pushes the outer teeth 39 of the lower brake actuator 38 into engagement with the internal teeth of the lower brake ring gear 40. In this phase of movement, the brake plates 35, 38 of the driver plate 8 a short distance moved linearly until the teeth 36, 39 of the brake plate 35th , 38 are engaged with the associated brake sprockets 37, 40.
If the teeth mesh with each other, then the linear displacement of the brake plates 35, 38 is completed and the brake plates 35, 38 and the associated brake sprockets 37, 40 are rotated against each other.
The brake plates 35, 38 are guided with their bearing journals 43, 44 in the bearing hole 42 of the base plate designed as a slot. As a result, a freewheel between the toothed brake plates 35, 38 can be achieved. The braking or damping effect can preferably be enhanced by the fact that these brake parts are in a silicone oil similar high-viscosity medium.

When opening the furniture hinge, the teeth come out of engagement with each other. The brake plates 35, 38 and the sprockets 37, 40 are no longer twisted. The furniture hinge can be opened without restraint. Thus, the driver plate 8 is pushed back and rotates the brake plates 35, 38 in the starting position, wherein the driver plate 8, the brake plates 35, 38 in brings a linear backward movement in the starting position and brings them from the teeth with the brake sprockets 37, 40. By the rear abutment of the bearing pins 43, 44 in the slot bearing bore 42, the brake plates 43, 44 are then rotated to the starting position.

The operation of the brake and damping device by the articulated lever 4 takes place in the same manner as described above. This is shown again in detail in FIGS. 11 and 12.

drawing Legend

1

hinge

2

hinge

3

Outer toggle

4

Inner articulated lever

5

hinge cup

6

baseplate

7

Brake and damping device

8th

driver plate

9

arrow

10

arrow

11

joint edge

12

driving lug

13

driver pin

14

driver pin

15

Brake plate (above)

16

Brake plate (below)

17

adjustment

18

joint spring

19

pivot pin

20

cloth

21

cloth

22

drilling

23

driver opening

24

exemption

25

direction of rotation

26

angle

27

drilling

28

driver opening

29

exemption

30

direction of rotation

31

pivot

32

brake surface

33

guide

34

Reset pin

35

Brake plate (above)

36

gearing

37

Brake ring (above)

38

Brake plate (below)

39

gearing

40

Brake ring (below)

41

baseplate

42

bearing bore

43

pivot

44

pivot

Claims (14)

1. Furniture fitting, in particular furniture hinge (1), with an integrated braking and damping device (7), comprising a hinge arm (2) which can be fixed to a furniture part and a hinge cup (5) which can be fixed to another, movable furniture part and is movably connected to the hinge arm (2) via at least one articulated lever (3, 4), wherein a driver plate (8), which is displaceably mounted in the hinge cup (5) and can be indirectly or directly actuated by the articulated lever (4) is provided, characterised in that the driver plate makes at least one brake plate (15, 16; 35, 38) rotatably mounted in the hinge cup (5) rotate, wherein the brake plate (15, 16; 35, 38) has at least a first brake surface (32) which slides on at least one associated second brake surface (32) which is fixed or movable relative to the first brake surface (32).
2. Furniture fitting according to claim 1, characterised in that the driver plate (8) is arranged in the region of the hinge cup (5) close to the base and is linearly displaceably guided there.
3. Furniture fitting according to any one of the preceding claims, characterised in that the hinge cup (5) is closed by a base plate (6; 41), the inner face of which forms the fixed brake surface (32).
4. Furniture fitting according to claim 3, characterised in that the at least one brake plate (15, 16; 35, 38) is rotatably mounted on the base plate (6; 41).
5. Furniture fitting according to either of claims 3 or 4, characterised in that the at least one brake plate (15, 16; 35, 38) is arranged between the base plate (6; 41) and the driver plate (8).
6. Furniture fitting according to any one of the preceding claims, characterised in that the driver plate (8) has at least one driver pin (13, 14), which engages in a driver opening (23; 28), of the brake plate (15, 16; 35, 38), arranged eccentrically with respect to the axis of rotation.
7. Furniture fitting according to any one of the preceding claims, characterised in that the movable brake surface (32) is formed by a second brake plate (15, 16; 35, 38) rotatably mounted in the hinge cup (5).
8. Furniture fitting according to claim 7, characterised in that the brake plates (15, 16; 35, 38) are arranged lying one above the other.
9. Furniture fitting according to claims 6 and 7, characterised in that the driver plate (8) has a second driver pin (13; 14) which engages in a driver opening (23; 28) of the second brake plate (15, 16; 35, 38), wherein the driver pins (13; 14) of the driver plate and the associated driver openings (23; 28) of the two brake plates are arranged around the axis of rotation of the brake plates in such a way that a movement of the driver plate makes the brake plates (15, 16; 35, 38) rotate in an oppositing direction.
10. Furniture fitting according to any one of the preceding claims, characterised in that the driver plate (8) is only actuated by the articulated lever (4) in the region of a defined closing angle of the furniture hinge (1).
11. Furniture fitting according to any one of the preceding claims, characterised in that the external diameter of the brake plate (15, 16; 35, 38) substantially corresponds to the internal diameter of the hinge cup (5).
12. Furniture fitting according to any one of claims 1 to 10, characterised in that the external diameter of the brake plate (35, 38) is substantially smaller than the internal diameter of the hinge cup (5), the brake plate (35, 38) being surrounded by a brake gear rim (37, 40) and being partially provided with external teeth (36, 39), which mesh with internal teeth of the brake gear rim (37, 40), so the brake gear rim (37, 40) is made to rotate together with the brake plate.
13. Furniture fitting according to claim 12, characterised in that the surfaces of the at least one brake gear rim (37, 40) form additional movable brake surfaces (32).
14. Furniture fitting according to any one of the preceding claims, characterised in that a highly viscous, liquid medium is introduced between the brake surfaces (32).

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