EP2654504B1 - Opening and closing device for movable furniture parts - Google Patents

Description

The present invention relates to an opening and closing device for movable furniture parts, in particular drawers, with a collection device and an ejection device, wherein the ejection device comprises a biased by an energy storage carrier which is unlockable in an end position of a guideway and coupled to a carriage and an ejection device ,

Opening devices for movable furniture parts are known, which move a movable furniture part in the opening direction via an ejection mechanism ( EP 2 208 439 A1 ). Such opening devices hold the movable furniture part in a predetermined closing position, so that the opening device is unlocked by pulling or pushing the movable furniture part and the movable furniture part is ejected. In such opening devices has the disadvantage that the assembly of the opening device must be very accurate, so that the closed position of the movable furniture parts is predetermined to achieve an appealing aperture image.

It is therefore an object of the present invention to provide an opening and closing device for movable furniture parts, which is easy to install and also ensures comfortable handling.

This object is achieved with an opening and closing device with the features of claim 1.

According to the invention, the opening and closing device comprises an adjustable limiting element in order to limit the travel of the driver in the opening direction. As a result, the opening and closing device can be adapted to different purposes optimized because it is perceived by the user as unpleasant when too high Auswerfkräfte and clamping forces are required. By the limiting element, the distance of the ejection device and thus also the necessary distance for tensioning the force accumulator can be adjusted. Shorter tension paths are usually perceived by the user as less disturbing, since forces only have to be expended over a short distance.

Preferably, the limiting element can be fixed in different positions on a housing on which the guide track is formed. A simple assembly of the limiting element is achieved if the limiting element is designed as a plug-in element which has a plug-in in the guideway stop and can be inserted into different openings in the housing.

The effective travel distance of the ejection device is preferably at most twice as long, in particular only at most 1.6 or 1.2 times as long as the effective travel distance of the intake device. As a result, the ejection device ensures release after ejection against the force of the retraction device, but there is no excessive acceleration of the movable furniture part.

According to a further embodiment, two spaced apart stops are provided on the carriage, wherein a first stop with the driver in the ejection direction and a second stop in the feed direction with the driver can be coupled. This ensures that the ejection device is clamped by the first stop before reaching the closed position. The effective in the direction of feed stop can be designed to be resilient and latching be moved past in the opening direction of the driver. The closing-effective stopper disengages from the driver when in a cocked and locked position, for example by pivoting while moving along a guideway having an angled end portion.

According to a further embodiment, a magnet is arranged on the ejection stop, which can be coupled with a metallically fixed activator. As a result, the ejection stop can transmit not only compressive but also tensile forces; in particular, the slide can be pulled along a guideway via a coupling of the ejection stop to the stationary activator. This allows in a simple manner a decoupling of the first stop from the driver and an engagement of the second stop on the carriage with the driver.

In order to adjust the opening and closing device for different width and heavy movable furniture parts, the force on the driver or alternatively the available energy of the energy storage device is adjustable. For this purpose, the energy accumulator may be formed as a spring, wherein one end of the spring can be fixed to a housing at different positions on one side. Other adjustment mechanisms can be used to adjust the spring force of the ejector to the desired purpose. Alternatively, the energy in the system can be varied via a travel limit for the driver.

Between a comb, the positioning lugs spaced from each other, and the guide track for the driver, a limiting element can be used for energy adjustment.

According to a further embodiment, a pivotable lever is provided which forms a stop for the carriage, wherein by means of the lever, the driver from the end position can be unlocked to activate the ejection device. As a result, the closing position is predetermined by the pivotable lever. The retraction device ensures that the closed position is reached and the carriage bears against the lever without the user having to move the movable furniture part exactly to the closed position.

Preferably, in a closed position of the carriage is tensioned by the retraction device in the closing direction and the holding forces of the driver in the locked position are greater than the triggering forces by the lever to which the carriage rests. Thereby, a locking or latching of the movable furniture part is obtained in the closed position, so that the system is stable when only the retraction device in the closed position is effective and biases the carriage in the closing direction.

For an adjustment of the diaphragm gap, the ejection device preferably has at least one ejection stop which can be adjusted in the closing direction. The ejection stop can be infinitely adjustable via a nut, but other adjustment mechanisms can be used.

Preferably, the force accumulator of the ejection device is tensioned when closing the movable furniture part, wherein the path for tensioning the energy accumulator spaced from a closed position is arranged, for example, at a distance between 2 to 5 cm. As a result, the handling is particularly simplified because the user does not have to lock the furniture part exactly on the furniture body. In this case, the collection device at a closing operation at the end of the clamping path of the energy storage of the ejection device be activated so that the distance between the clamping of the ejection device and the actual closed position can be automatically covered by the feed device. To avoid hard impact noise, the collection device can also be designed to be damped.

Preferably, the ejection device has two guideways. One serves to guide the driver and is usually designed as Krückstockkurve. The further guideway serves to guide the carriage or driving carriage and is preferably designed without an angled section.

The collection device and ejection device are preferably mounted at a distance from one another on the movable furniture part and / or furniture body. As a result, installation spaces can be used particularly well, for example, the housing of the ejection device can be mounted on the underside of a drawer, while the collection device is accommodated in a side frame of a drawer.

Figur 1

eine perspektivische Ansicht eines Möbels mit einer erfindungsgemäßen Öffnungs- und Schließvorrichtung;

Figur 2

eine perspektivische Ansicht des Schubelementes der Figur 1;

Figur 3

eine perspektivische Explosionsdarstellung einer erfindungsgemäßen Ausstoßvorrichtung;

Figur 4

eine Ansicht der Ausstoßvorrichtung im zusammengebauten Zustand;

Figuren 5 bis 12

mehrere Ansichten des Möbels, der Ausstoßvorrichtung und der Einzugsvorrichtung in unterschiedlichen Positionen;

Figur 13

eine Detailansicht des Blendenspaltes;

Figuren 14A bis 14C

mehrere Ansichten beim Einstellen des Blendenspaltes;

Figur 15

eine Ansicht der Öffnungs- und Schließvorrichtung beim Einstellen des Blendenspaltes;

Figur 16

ein Kraft-Weg-Diagramm der Öffnungs- und Schließvorrichtung,

Figur 17

ein modifiziertes Kraft-Weg-Diagramm mit unterschiedlichen Federkräften, und

Figur 18

eine Ansicht der Ausstoßvorrichtung mit den Einstellmöglichkeiten für die Feder.

The invention will be explained in more detail using an exemplary embodiment with reference to the accompanying drawings. Show it:

FIG. 1

a perspective view of a piece of furniture with an opening and closing device according to the invention;

FIG. 2

a perspective view of the thrust element of FIG. 1 ;

FIG. 3

an exploded perspective view of an ejection device according to the invention;

FIG. 4

a view of the ejection device in the assembled state;

FIGS. 5 to 12

several views of the furniture, the ejection device and the collection device in different positions;

FIG. 13

a detailed view of the diaphragm gap;

FIGS. 14A to 14C

several views when adjusting the diaphragm gap;

FIG. 15

a view of the opening and closing device in adjusting the diaphragm gap;

FIG. 16

a force-displacement diagram of the opening and closing device,

FIG. 17

a modified force-displacement diagram with different spring forces, and

FIG. 18

a view of the ejector with the settings for the spring.

A piece of furniture 1 comprises a furniture body 2, shown schematically, on which a push element in the form of a drawer 3 is slidably mounted. For this purpose, 3 pullout guides 5 are provided on opposite sides of the drawer, which are defined by angle 9 on the furniture body 2. The drawer 3 with the front panel 4 can be ejected via an ejector 6 in the opening direction, the ejector 6 is supported on an angular activator 7, which is mounted on the furniture body 2. The angle-shaped activator 7 is attached to a fixed piece of furniture, e.g. the carcass wall, the carcass angle of the pullout guide or the guide rail of the pullout guide set. An integral design of the angular activator 7 with, for example, the carcass angle of the pullout guide or the guide rail of the pullout guide is also possible. The opening and closing device according to the invention is used by way of example in conjunction with a drawer, but it is also possible to use the opening and closing device for other movable furniture parts, such as sliding doors, push elements and flaps.

As in FIG. 2 is shown, the ejector 6 is mounted on the underside of the drawer 3, while the pullout guide 5 is received within side frames 8 of the drawer 3. At the pullout guide 5 is a collection device 40, by means of which the drawer 3 is pulled in the closing direction.

The ejection device 6 is in the Figures 3 and 4 shown in detail. A housing 20 formed from two parts forms a first guide track 21 for a carriage 15 off. The carriage 15 comprises two pins 16 which are movable in the linear guide track 21. On the carriage 15, a discharge stop 10 is arranged, in which a magnet 11 is received. The magnet 11 can be coupled to the angle-shaped activator 7 and then holds the ejection stop 10 on the activator 7 fixed to the furniture body.

The ejection stop 10 is adjustable in the closing or opening direction, wherein the ejection stop 10 for this purpose has a threaded bolt 12 which is guided by two eyelets 14 on the carriage 15. Between the two eyelets 15, a nut 13 is rotatably supported, so that by rotating the nut 13 of the ejection stop 10 can be moved.

On the carriage 15, a first stop 17 is formed, which can be brought into engagement with a driver 26 in the ejection direction. Spaced apart from the first stop 17, a second stop 18 is provided on the carriage 15, which can be coupled in the closing direction with the driver 26. The second stop 18 is resilient and includes a spring bar 19 which is supported at the bottom of a receptacle 25 for the stop 18. As a result, the stop 18 can be pressed against the force of the spring bar 19 in the carriage 15. The stopper 18 also has on the protruding from the carriage 15 section on a run-on slope.

On the housing 20, a second guide track 22 is formed, on which a driver 26 of the ejection device 6 is movable. The driver 26 includes two pins 27 that engage the track 22 and a protruding tip 28 that can be engaged with the first stop 17 or second stop 18. The guideway 22 in this case comprises an angled end portion, on which the driver 26 can be locked by the force of a spring 29. The spring 29 can be set at the end remote from the driver 26 at different positions on the housing 20 or the housing 20 arranged components to adjust the force of the spring 29 can.

On the housing 20, a lever 30 is rotatably mounted, which engages with an axis 31 in a receptacle on the housing 20. On both sides of the axis 31, the lever 30 has arms 32 and 33. The arm 32 is in the closed position on the second stop 18, while the arm 33 of the lever 30 abuts on the driver 26. The designed as pins stops 34 and 35 serve as Drehwegbegrenzer for the lever 30. The stopper 35 causes the lever 30 can not get out of the range of influence of the driver 26. Again, the stopper 34 causes the lever 30 can not get out of the influence of the stopper 18 on the carriage 15. The stops 34 and 35 thus increase the reliability of the ejector.

In FIG. 5 is the opening and closing device shown in the closed position, in which the front panel 4 with a small gap y (see Fig. 13 ) is arranged to the furniture body 2. A collection device 40 on the pullout guide 5 is via a driver 42 in engagement with an activator 41, which is fixed to the running rail of the pullout guide 5. The driver 42 is movably mounted along a cam guide on a housing 43 and tensioned by the force of a spring in the closing direction. The spring is received in a cartridge 44, in which a damper can be arranged.

The retraction device 40 presses the push element 3 in the closing direction, so that the housing 20 is also pressed in the closing direction.

Due to the force of the spring of the retraction device, the carriage 15, which is supported on the ejection stop 10 on the activator 7 and therefore can not continue along the guide track 21, acting on the arm 32 of the lever 30. The lever 30 is therefore by the force the spring of the retraction device 40 in FIG. 5 tensioned in the clockwise direction and presses with the arm 33 against the driver 26 so that it is moved out of the angled end portion of the guideway 22 and unlocked. The unlocking forces by the retraction device 40 counteracts the force of the spring 29, which holds the driver 26 in the locked position. Since the force of the spring 29 is significantly greater than the force of the retraction device 40, the driver 26 is held in the locked position, when next to the retraction device 40 no further force is exerted on the pusher.

In FIG. 6 the position when unlocking the opening and closing device is shown. The front panel 4 has been slightly pushed into the furniture body 2, at most by the amount of the gap y. Here, the voltage applied to the activator 7 ejection stop 10 and thus the carriage 15 of the ejector has been moved slightly in the closing direction. Furthermore, the activator 41 of the collection device has been moved slightly in the closing direction.

By pressing the front panel 4, the lever 30 has been rotated by the stop 18 on the carriage 15 in a clockwise direction, so that the arm 33 of the lever 30 moves the driver 26 out of the locked end position. As a result, the driver 26 can now be moved along the guide track 22 by the force of the spring 29. The driver 26 is in engagement with the first stop 17 on the carriage 15th

In FIG. 7 the opening and closing device is shown in an ejection position. The front panel 4 is spaced from the furniture body 2. The retraction device 40 has been tensioned by moving the pusher in the opening direction, wherein the activator 41 has moved the driver 42 along the guideway to an angled end portion on which the driver 42 is pivoted and disengaged was brought with the activator 41. The ejection device 6 is still effective and the carriage 15 is moved by the driver 26 in the opening direction.

In FIG. 8 the position is shown in which the driver 26 of the ejection device abuts a limiting element 23 which is inserted into the housing 20. For this purpose, the housing 20 has a comb 37 which has positioning lugs 38 into which the limiting element 23 can be inserted for the purpose of creating the distances 51 to 55 for the driver 26. The driver 26 has now arrived in the end position, while the carriage 15 along the guide track 21 can be moved on. Thus, the carriage 15 does not stop in this position, now acts the tensile force of the magnet 11 which is coupled to the metallic activator 7 on the furniture body. As a result, the carriage 15 is pulled further along the guide track 21.

In FIG. 9 the position is shown, in which now also the carriage 15 has reached its end position on the guide track 21. During the further opening movement of the carriage 15 was pulled along the guide track 21, wherein the second stop 18 has been moved over the top 28 of the driver 26 away. The stop 18 was briefly pressed against the force of the spring bar 29 in the carriage 15 and the stop 18 moves with the run-on slope over the top 28 of the driver away. Subsequently, the stop 18 is latched by the force of the spring bar behind the tip 28 of the driver 26.

In this position, the thrust element 4 can now be moved freely in the opening direction, wherein both the ejection device 6 and the collection device 40 are out of engagement and only the tensile force of the magnet 11 on the activator 7 must be overcome, with usually the inertial force of the drawer 3 is sufficient.

In FIG. 10 the thrust element is again moved in the closing direction, wherein initially the spring 29 of the ejector 6 is tensioned. For this purpose, the second stop 18 engages the driver 26 and moves it to the angled end portion of the guide rail 22. When the driver 26 has arrived at the angled end portion, he presses the lever 30 counterclockwise. In addition, the tip 28 of the driver 26 is disengaged from the second stop 18, which can now be moved over the driver 26 away.

The collection device 40 is still out of engagement, since the activator 41 is located just before the driver 42.

In FIG. 11 a position is shown in which the retraction device 40 has been activated and the activator 41 is in engagement with the driver 42, which is now moved in the closing direction by the force of a pull-in spring. The ejection device 6 is in the tensioned state, wherein the carriage 15 is moved along the guide track 21.

In FIG. 12 is reached the closing position, which is also in FIG. 5 is shown. The second stop 18 is now applied to the arm 32 of the lever 30, while the opposite arm 33 abuts against the driver 26. Since the holding forces by the spring 29 are greater than the triggering forces by the feeder 40, the pusher element remains stable in the closed position.

In order to adjust the gap y between the front panel 4 and the furniture body 2 ( FIG. 13 ), an adjusting mechanism for the ejection stop 10 is provided on the carriage 15, which has a displacement V.

According to the FIGS. 14A to 14C can be moved by turning the nut 13 of the ejection stop 10 in the closing or opening direction. As a result, the gap y formed as a diaphragm gap is adjusted by the shown distances s or t (s + t = V). The adjustment of the aperture plate can be carried out either with open or closed push element, the accessibility to the nut 13 is better given at the bottom of the drawer with open pusher.

In FIG. 16 a force-displacement diagram of the opening and closing device according to the invention for the closing operation is shown. On the left side, the closing position is arranged, in which the retraction device 40 exerts a pulling force on the thrust element. Distanced from the retracting device 40, the ejection device 6 is effective, which is tensioned during a closing movement, so that a closing force must be expended.

In FIG. 17 the force-displacement diagram for the opening process is shown. The triangle for clamping the ejection device is now arranged offset because the ejection device is effective immediately after unlocking in the closed position. Since the opening force of the ejector is significantly greater than the closing force of the retractor, the pusher 3 is ejected.

In FIG. 17 It is shown that the triangle of the spring force of the ejector can be decomposed into different sections. Both the maximum spring force and the spring travel can be adjusted. To change the available energy or the spring travel of the spring 29 may accordingly FIG. 18 the restriction member 23 at five different positions, the distances 51 to 55, are set. In addition, the effectiveness range of the ejection device 6 can be adjusted by selecting the length of the limiting element 23.

As a result, the opening and closing device can be adapted to different purposes optimized because it is perceived by the user as unpleasant when too high Auswerfkräfte and clamping forces are required. Rather, a smooth opening and closing should be achieved. For heavy push elements, such as sliding doors and wide drawers, higher Auswerfkräfte are necessary than for lightweight furniture parts. In this respect, by an appropriate choice of the effective spring force of the ejection device and the effective Auswerfweges an optimized adaptation for the particular application can be made.

LIST OF REFERENCE NUMBERS

1.

Furniture

Second

furniture body

Third

drawer

4th

front panel

5th

pull-out guide

6th

ejector

7th

activator

8th.

Drawer side

9th

angle

10th

emissions stop

11th

magnet

12th

threaded bolt

13th

mother

14th

eyelet

15th

carriage

16th

spigot

17th

attack

18th

attack

19th

spring bar

20th

casing

21st

guideway

22nd

guideway

23rd

limiting element

25th

admission

26th

takeaway

27th

spigot

28th

top

29th

feather

30th

lever

31st

axis

32nd

poor

33rd

poor

34th

attack

35th

attack

37th

Comb

38th

fixing lug

40th

retraction device

41st

activator

42nd

takeaway

43rd

casing

44th

cartridge

51st

distance

52nd

distance

53rd

distance

54th

distance

55th

distance

y

gap

s

path

t

path

V

adjustment

Claims (18)

1. An opening and closing device for movable furniture parts, in particular drawers (3), having a retraction device (40) and an ejection device (6), wherein the ejection device (6) has a driver (26), which is pre-tensioned by a force accumulator (29), and which can be locked in an end position of a guide path (22) and can be coupled with a carriage (15), characterized in that an adjustable delimitation element (23) is provided, in order to delimit the deflection of the driver (26) in the opening direction.
2. The opening and closing device according to Claim 1, characterized in that the delimitation element (23) is fixable in various positions on a housing (20), on which the guide path (20) is formed.
3. The opening and closing device according to Claim 1 or 2, characterized in that the delimitation element (23) is implemented as a plug-in element, which has a stop pluggable into the guide path (20).
4. The opening and closing device according to one of the preceding claims, characterized in that the delimitation element (23) is pluggable into various positioning lugs (38) in the housing (20).
5. The opening and closing device according to one of the preceding claims, characterized in that the effective deflection distance of the ejection device (6) is at most twice as long, preferably only 1.6 times as long, as the effective deflection distance of the retraction device (40).
6. The opening and closing device according to one of the preceding claims, characterized in that the driver (26) is pre-tensioned via a force accumulator (29), whose spring force is settable.
7. The opening and closing device according to one of the preceding claims, characterized in that two stops (17, 18), which are spaced apart from one another, are provided on the carriage (15), wherein a first stop (17) can be coupled with the driver (26) in the ejection direction and a second stop (18) can be coupled with the driver (26) in the retraction direction.
8. The opening and closing device according to Claim 7, characterized in that the stop (18) which is active in the retraction direction is implemented as springy and can be moved past the driver (26) in a latching manner in the opening direction.
9. The opening and closing device according to one of the preceding claims, characterized in that a pivotable lever (30) is provided, which forms a stop for the carriage (15) and by means of which the driver (26) can be unlocked from the end position.
10. The opening and closing device according to Claim 9, characterized in that, in the closed position, the carriage (15) is tensioned by the retraction device (40) in the closing direction and the holding forces of the driver (26) in the locked position are greater than the triggering forces by the lever (30), against which the carriage (15) presses.
11. The opening and closing device according to Claim 9 or 10, characterized in that the lever (30) is mounted so it is rotatable on a housing (20), on which a guide path of the carrier (22) and/or the carriage (15) is also formed, and has two arms (32, 33), which protrude from an axis of rotation (31) of the lever (30).
12. The opening and closing device according to one of the preceding claims, characterized in that the ejection device (6) has at least one ejection stop (10), which is adjustable in the closing direction.
13. The opening and closing device according to one of the preceding claims, characterized in that the ejection device (6) has at least one ejection stop (10) having a magnet (11), which can be coupled with a stationary metallic activator (7).
14. The opening and closing device according to one of the preceding claims, characterized in that the force accumulator (29) of the ejection device (6) is tensioned by closing the movable furniture part (3), wherein the deflection for tensioning the force accumulator (29) is arranged spaced apart from a closed position.
15. The opening and closing device according to one of the preceding claims, characterized in that the retraction device (40) is activated during a closing movement at the end of the tensioning deflection of the force accumulator (29) of the ejection device (6).
16. The opening and closing device according to one of the preceding claims, characterized in that the retraction device (40) and the ejection device (6) are installed spaced apart from one another on the movable furniture part (3) and/or the furniture body (2).
17. The opening and closing device according to one of the preceding claims, characterized in that the housing (20) of the ejection device (6) can be installed on the bottom side of a drawer (3).
18. An ejection device for movable furniture parts, in particular drawers, wherein the ejection device (6) has a driver (26), which is pre-tensioned by a force accumulator (29), and which can be locked in an end position of a guide path (22) and can be coupled with a carriage (15), characterized in that an adjustable delimitation element (23) is provided, in order to delimit the deflection of the driver (26) in the opening direction.

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