EP2267260A1 - Dampening and extraction device - Google Patents

Abstract

The device (4) has a base element (5) attached to an outer sliding door (1), and an actuation element (8) attached to an inner sliding door (2). The actuation element pressurizes a swinging arm (6) toward a folded position during displacing a furniture part against another furniture part in a displacement direction. A lever (19) is attached to the swinging arm at an end and pivotably eccentric to a swiveling axis (S). Another end of the lever is pivotably engaged to a dampening unit (13) and linearly adjustable against the base element.

Description

Damping and extraction device for two furniture parts, of which at least one is displaceable relative to the other, comprising
a base element (5) which can be fastened to a first furniture part (1),
a pivotal lever (6) pivotally mounted to the base member (5) about a pivot axis (S) between a deployed position and a retracted position,
a force accumulator (17) which acts on the pivoting lever (6) at least over part of its pivoting path in the direction of the folded-in position,
a damping unit (13) which is supported on the base element (5), as well as
an actuating element (8) which can be fastened to a second furniture part (2) and which acts on the pivoting lever (6) in the direction of the folded-in position during displacement of at least one of the two furniture parts relative to the other of the two furniture parts in a first displacement direction,

The invention relates to a damping and extraction device for two furniture parts, of which at least one is displaceable relative to the other. In particular, these are two sliding doors which can be displaced relative to each other. The apparatus comprises a base member attachable to a first furniture member, a pivotal lever pivotally attached to the base member about a pivot axis between a deployed position and a retracted position, a force accumulator which holds the pivot lever at least over part of its pivoting path Direction towards the folded position acted upon, a damping unit which is supported on the base member, and an actuating element which can be attached to a second furniture part and at least when moving one of the two furniture parts against the other of the two furniture parts in a first displacement direction the pivot lever is acted upon in the direction of the folded position.

Such a device is from the WO 2006/087057 A1 known. The damping unit is in this case designed as a linear damping element which is pivotally connected on the one hand on the base element and on the other hand eccentrically to the pivot axis pivotally connected to the pivot lever. Likewise, the spring means, in the form of a coil spring, on the one hand pivotally connected to the base member and on the other hand eccentrically to the pivot axis pivotally connected to the pivot lever. The damping element is fixed to the pivot lever such that in a closed position of the pivot lever, a larger lever arm results, is acted upon by the transfer of the pivot lever in the direction of an open position on the damping element. In the open position results in a lower lever arm. Thus, the damping force is greater the closer the pivot lever is to the closed position. Furthermore, due to the pivotally arranged spring means and damping means results in a large required space.

Another damping and tightening device is from the DE 203 15 124 U1 known. The damping and tightening device described therein comprises a slide which is displaceably guided between an open position and a closed position on a cabinet housing. A tension spring acts on the slide in the direction of the closed position. A driver is pivotally mounted on the slider and has a slot into which a bolt of the sliding door is engageable engaged. By opening the sliding door, the slider is moved to its open position. After reaching the open position, the driver pivots into a locking position, in which the slider is held against the spring force of the tension spring in the open position and in which the bolt can leave the slot of the driver, so that the sliding door can be opened further.

When closing the sliding door, the bolt engages again in the slot of the driver and pivots it from the locked position to a normal position in which the slide is released and thus from the tension spring back to the closed position is moved. Together with the slide thus the sliding door is automatically closed. A damper causes a braked movement in the direction of the closed position and possibly dampens the momentum of the sliding door. A similar damping and tightening device shows EP 1 426 535 A2 ,

Object of the present invention is to provide a small-sized device of the type mentioned.

This is achieved in that a lever is provided which is pivotally mounted with a first end to the pivot lever eccentrically to the pivot axis and pivotally engages with a second end of the damping unit, wherein the second end relative to the base member is linearly adjustable.

The linear adjustment of the second end of the lever and thus the damping unit ensures that the device can be accommodated in a narrow base element or housing, whereby the space is significantly reduced. As a result, the device is particularly suitable for two sliding doors which can be displaced relative to one another, wherein the base element is fastened on the rear side of one of the sliding doors. Here, only a small space is available, since two mutually displaceable sliding doors are usually moved in two planes to each other and are arranged in an open position one behind the other, the outer sliding door only slightly protruding laterally beyond the inner sliding door. In this area, with which the outer sliding door protrudes, the base element is attached to the back of the outer sliding door. The actuator is attached to the inner sliding door, so that upon reaching the maximum open position of the two sliding doors, the movement is mutually attenuated and the sliding doors are finally pulled into the final position.

The lever forms together with the pivot lever a toggle lever arrangement, wherein the lever and the pivot lever are in the folded position at least in an approximately extended position to each other. The lever and the pivot lever are thus arranged at an angle of approximately 180 ° to each other. In the unfolded position close the lever and the pivot lever at a smaller angle to each other. By this toggle assembly ensures that in the folded position in which the lever and the pivot lever are at least approximately arranged in an extended position to each other, an angular movement of the pivot lever only a small axial displacement of the second end of the lever and thus only a small impact causes the damping unit. The damping effect is therefore relatively low near the folded position. In contrast, causes a pivotal movement of the pivot lever near the unfolded position a greater translational movement of the second end of the lever and thus the damping unit, so that in the extended position results in a greater damping effect. This has the advantage that in a sweeping movement of the two sliding doors to each other and connected to a movement of the pivot lever from the unfolded position toward the folded position initially a large damping effect is achieved to decelerate the movement. In the further course of the movement of the pivot lever is moved by the spring means in the retracted position, whereby on the actuator and the two sliding doors are shifted from each other. When moving in the direction of the folded position, the damping effect decreases continuously, so that it is ensured that the spring means safely moves the pivot lever to the folded position, without being slowed down too much.

The damping unit is preferably telescopic in a direction transverse to the direction of displacement of the furniture parts. In a particularly favorable embodiment, the damping unit is telescopable at right angles to the direction of displacement of the furniture parts. The damping unit thus comprises at least one linear damping element.

The damping element may comprise two mutually axially adjustable damper components, namely a cylinder and an opposite the cylinder axially adjustable piston rod. This may be, for example, a hydraulic damper.

The lever is in this case supported with its second end against one of the damping components, at least indirectly. The lever may be supported against the damping unit via a slider guided linearly displaceably on the base element, wherein the lever is preferably pivotally mounted on the slider.

The slider can be displaceable in one direction transversely, preferably at right angles, to the direction of displacement of the furniture parts. In particular, when both the slider and the damping unit are arranged displaceable at right angles to the direction of displacement of the furniture parts, a low installation space depth considered in the displacement direction can be ensured.

Preferably, it is provided that the energy storage acts on the pivot lever via a pivoting path from a dead center position to the retracted position in the direction of the folded position, wherein the dead center position between the unfolded position and the retracted position is arranged. In addition, it can be provided that the force accumulator acts on the pivot lever from the dead center position to the unfolded position in the direction of the deployed position, the pivoting path from the dead center position to the retracted position is greater than the pivoting path from the dead center position to the unfolded position. This ensures that the pivot lever is securely held in the unfolded position.

This can be realized in that the force accumulator acts on the pivot lever via a pivoting path from a dead center position to the folded position in the direction of the folded-in position, wherein the dead center position is between the unfolded position and the retracted position.

Here, the footprint from the dead center position to the retracted position on a decreasing distance from the pivot axis.

That is, in the dead center position, the slider is supported at a position against the footprint, in which it has a greater distance from the pivot axis, as in the retracted position.

In addition, the footprint from the dead center position to the deployed position at a constant or decreasing distance from the pivot axis, so that no force or a force is applied to the pivot lever in the direction of taking the unfolded position.

The actuating element preferably comprises a bolt, which can be brought into engagement in a recess of the pivot lever for coupling between the actuating element and pivot lever.

Preferential instruction is the recess in the unfolded position of the pivot lever arranged such that the bolt through an inlet opening of the recess, preferably in the form of a groove or a slot, can engage in this, when the furniture parts are shifted from each other.

Figur 1

eine perspektivische Ansicht einer erfindungsgemäßen Dämpfungs- und Anzugsvorrichtung an nicht vollständig geöffneten Schiebetüren;

Figur 2

eine perspektivische Ansicht der Dämpfungs- und Anzugsvorrichtung gemäß Figur 1 an vollständig geöffneten Schiebetüren;

Figur 3

eine Draufsicht der Dämpfungs- und Anzugsvorrichtung gemäß Figur 1 und

Figur 4

eine Draufsicht der Dämpfungs- und Anzugsvorrichtung gemäß Figur 2.

A preferred embodiment of the invention will be explained below with reference to the drawings. Hereby shows:

FIG. 1

a perspective view of a damping and tightening device according to the invention to not completely open sliding doors;

FIG. 2

a perspective view of the damping and tightening device according to FIG. 1 on fully opened sliding doors;

FIG. 3

a plan view of the damping and tightening device according to FIG. 1 and

FIG. 4

a plan view of the damping and tightening device according to FIG. 2 ,

The FIGS. 1 and 2 show a damping and tightening device 4 according to the invention, as they are fastened to two mutually displaceable furniture parts, namely an outer sliding door 1 and an inner sliding door 2. The FIGS. 1 and 2 will be described together below.

The two sliding doors 1 and 2 are formed as a flat plates and can be, for example, sliding doors of a sliding door cabinet, wherein the two sliding doors 1, 2 in the FIGS. 1 and 2 seen from the inside of a cabinet. In principle, however, it is also conceivable that one of the two furniture parts 1, 2 is fixed and only the other furniture part is movable. The two sliding doors 1, 2 are arranged in two parallel planes one behind the other and can be moved in their plane parallel to a displacement axis V. In the following, the term "displacement direction" is used, which refers to a displacement of one of the two sliding doors 1, 2 or both sliding doors 1, 2 to each other in one of the two possible directions along the displacement axis V. By "first displacement direction" is the direction in which the two sliding doors 1, 2 move relative to each other when opening the sliding doors. In an open position of the two sliding doors 1, 2 to each other, the two sliding doors 1, 2 overlap only slightly and can be used to open, for example, a cabinet in the in FIG. 2 shown opened position in which overlap the two sliding doors 1, 2 most part and protrude only over a short area in each case over the other sliding door.

On an inner sliding door 2 facing inner surface 3 of the outer sliding door 1, a base member 5 of the damping and extraction device 4 is mounted. On the base member 5, a pivot lever 6 is pivotally mounted about a pivot axis S. The pivot lever 6 can be between an unfolded position according to FIG. 1 and a folded position according to FIG. 2 pivot, wherein the pivot axis S is arranged at a right angle to the displacement axis V. On an end face 7 of the inner sliding door 2 facing the base element 5, an actuating element 6 is mounted, which has a pin 9, which is cylindrical and arranged parallel to the pivot axis S. The bolt 9 is arranged such that it can dip in the unfolded position of the pivot lever 6 through an end opening 11 on the pivot lever 6 in a groove 10 of the pivot lever 6. In the unfolded position of the pivot lever 6 and the groove 10 is arranged at an angle to the displacement axis V. The groove 10 closes with the displacement axis V an angle of about 45 °. As a result, the bolt 9 abuts against the wall of the groove 10, when the inner sliding door 2 relative to the outer sliding door 1 in the in FIG. 2 shown closed position, against a wall of the groove 10 at. In this movement, the pivot lever 6 is then pivoted in the view shown in the clockwise direction about the pivot axis S until the pivot lever 6 reaches the retracted position in which the pivot lever 6 and the groove 10 in approximately vertical and thus approximately at right angles or at least are arranged approximately at right angles to the displacement axis V.

The pivot lever 6 is held in the unfolded position. After a relatively small pivoting the pivot lever 6 exceeds a dead center position after the pivot lever 6, as will be explained below, is acted upon in the direction of the folded position with force and thus the bolt 9 approaches the base member 5. As a result, the two sliding doors 1, 2 are moved to their open position to each other. In order to achieve a slow damped suit and also to dampen the movement during a sweeping movement, for example, of the inner sliding door 2 with respect to the outer sliding door 1 (or vice versa), a damping element, which will also be explained later, is provided which controls the movement of the Swing lever 6 damps. Thus, first, the movement of the two sliding doors 1, 2 is damped to each other, so that a hard counter-hitting is to be provided attacks avoided. As a result, damage to the fittings of the sliding doors 1, 2 are avoided. Furthermore, a gentle tightening of the two sliding doors 1, 2 is made possible to ensure a comfortable opening of the sliding doors 1, 2.

The Figures 3 and 4 show the damping and tightening device 4 of the invention according to FIGS. 1 and 2 opposite side. The FIG. 3 shows the pivot lever 6 in the unfolded position and FIG. 4 in the folded position. The Figures 3 and 4 will be described together below.

As already explained, the pivot lever 6 is pivotally mounted on the base member 5 about the pivot axis S. A lever 19 is pivotally mounted at a first end on the pivot lever 6 about a first coupling axis K1, wherein the first coupling axis K1 is arranged parallel to the pivot axis S. With a second end of the lever 19 with a slider 12 about a second coupling axis K2 hinged. The slider 12 is guided axially adjustable on the base member 5 along a first adjustment axis X1. Thus results with the pivot lever 6, the lever 19 and the slider 12 a toggle lever assembly. This means that a first force action line W1, which extends from the pivot axis S to the first coupling axis K1, and a second force action line W2, which extends from the first coupling axis K1 to the second coupling axis K2, in the unfolded position of the pivot lever 6 a smaller angle between them as in the folded position according to FIG. 4 , In the retracted position of the pivoting lever 6, the pivoting lever 6 and the lever 19 are arranged approximately stretched to each other, that is, the first line of action W1 and the second line of action W2 include an angle of 180 ° or approximately 180 °.

For damping the pivoting movement of the pivot lever 6 and thus for damping the sliding movement of the two sliding doors 1, 2 to each other, a damping unit 13 is provided, which is designed as a linear damping element with a cylinder 14 and a piston rod 15 displaceable relative to the cylinder. The damping unit 13 is thus telescopic, wherein the damping unit 13 along the first adjustment axis X1 of the slider 12 is telescopic. The damping unit 13 is axially supported on the one hand with the cylinder 14 on the slider 12 and on the other hand with the piston rod 15 on the base member 5. The damping unit 13 is a hydraulic damper of known design, wherein the piston rod 15 is acted upon with a relatively small spring force in an extended position and the movement of the piston rod 15 against the cylinder 14 is hydraulically damped. Due to the toggle lever arrangement thus results in a high damping effect in a pivoting of the pivot lever 6, starting from the unfolded position in the direction of the folded position, wherein the damping effect decreases in the direction towards the retracted position.

Furthermore, a pressure piece 16 is provided which is guided axially displaceably along a second adjustment axis X2 on the base element 5. The pressure piece 17 is in this case supported against a footprint 18 on the pivot lever 6 and acted upon by means of a force accumulator in the form of a compression spring 17 against the footprint 18. The Footprint 18 is partially disposed about the pivot axis S1 around and has a varying distance to the pivot axis S over its circumference. In the unfolded position of the pivot lever 6, the pressure piece 16 in a region of the footprint 18 in Appendix, in which the footprint 18 has a smaller distance from the pivot axis S, as in the contact point at which the pressure piece 16 in a dead center position with the footprint 18th is in abutment, the dead center position is between the unfolded and the retracted position. This ensures that the pivot lever 6 is held securely in the unfolded position. Starting from the unfolded position only a small pivoting is required to reach the dead center position to provide the largest possible pivoting path, via which the pivot lever 6 is acted upon in the direction of the retracted position with force. For this purpose, the footprint 18 in the contact region of the pressure piece 16 on the footprint 18, when the pivot lever 6 is in the dead center position, a greater distance to the pivot axis S than in the retracted position of the pivot lever. 6

The first adjustment axis X1 is arranged parallel to the second adjustment axis X2, wherein the two adjustment axes X1, X2 are arranged at a right angle to the displacement axis V. Thus, the damping and extraction device 4 has a small size in the direction of the displacement axis V.

LIST OF REFERENCE NUMBERS

1

outer sliding door

2

inner sliding door

3

palm

4

Damping and extension device

5

base element

6

pivoting lever

7

face

8th

actuator

9

bolt

10

groove

11

opening

12

pusher

13

damping unit

14

cylinder

15

piston rod

16

Pressure piece

17

compression spring

18

footprint

19

lever

K1

first coupling axis

K2

second coupling axis

S

swivel axis

V

displacement axis

W1

first force line of action

W2

second force line of action

X1

first adjustment axis

X2

second adjustment axis

Claims (15)

Damping and extraction device for two furniture parts, of which at least one is displaceable relative to the other, comprising
a base element (5) which can be fastened to a first furniture part (1),
a pivotal lever (6) pivotally mounted to the base member (5) about a pivot axis (S) between a deployed position and a retracted position,
a force accumulator (17) which acts on the pivoting lever (6) at least over part of its pivoting path in the direction of the folded-in position,
a damping unit (13) which is supported on the base element (5), as well as
an actuating element (8) which can be fastened to a second furniture part (2) and which acts on the pivoting lever (6) in the direction of the folded-in position during displacement of at least one of the two furniture parts relative to the other of the two furniture parts in a first displacement direction,
characterized,
in that a lever (19) is provided, which is pivotably attached at a first end to the pivoting lever (6) eccentrically to the pivot axis (S) and pivotally engages the damping unit (13) with a second end, the second end being opposite the base element (5) is linearly adjustable. Damping and extraction device according to claim 1,
characterized,
that the lever (19) and the pivot lever (6) are in the folded-in position at least in an approximately extended position to each other. Damping and extraction device according to one of the preceding claims,
characterized,
that the damping unit (13) in a direction transverse, preferably at right angles to the displacement direction (V) of the furniture parts (1, 2) is telescopic. Damping and extraction device according to one of the preceding claims,
characterized,
that the damping unit (13) comprises at least one damping element. Damping and extraction device according to claim 4,
characterized,
in that the damping element comprises two mutually axially adjustable damper components, namely a cylinder (14) and a piston rod (15) axially displaceable relative to the cylinder (14). Damping and extraction device according to claim 5,
characterized,
in that the lever (19) is supported against one of the damper components (14). Damping and extraction device according to one of the preceding claims,
characterized,
in that the lever (19) is supported against the damping unit (13) via a slide (12) guided linearly displaceably on the base element (5). Damping and extraction device according to claim 7,
characterized,
that the lever (19) is pivotally mounted on the slider (12). Damping and extraction device according to one of claims 7 or 8,
characterized,
in that the slider (12) is displaceable in one direction transversely, preferably at right angles, to the displacement direction (V) of the furniture parts (1, 2). Damping and extraction device according to one of the preceding claims,
characterized,
in that the force accumulator (17) acts on the pivoting lever (6) via a pivoting path from a dead center position to the folded-in position in the direction of the folded-in position, the dead center position lying between the unfolded position and the folded-in position. Damping and extraction device according to claim 10,
characterized,
that the pivoting lever (6) has a footprint (18), which runs partly around the pivot axis (S) with a varying distance to the pivot axis (S), and
that a pressure piece (16) is provided, which is guided linearly displaceable on the base element (5) and from the energy storage device (17) is applied against the footprint. Damping and extraction device according to claim 11,
characterized,
that the footprint from the Totpunktstellung to the retracted position has a decreasing distance from the pivot axis (S). Damping and extraction device according to claim 12,
characterized,
that the footprint of the Totpunktstellung to the unfolded position has a constant or decreasing distance from the pivot axis (S). Damping and extraction device according to one of the preceding claims,
characterized,
in that the actuating element (8) comprises a bolt (9) which can be brought into engagement with a recess of the pivoting lever (6) for coupling between actuating element (8) and pivoting lever (6). Damping and extraction device according to claim 14,
characterized,
that the recess in the unfolded position of the pivoting lever (6) is arranged such that the bolt (9) can engage in it through an inlet opening of the recess, preferably in the form of a groove (10) or a slot, when the furniture parts (1 2) are displaced relative to one another in the first displacement direction.

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