EP2654504A1

EP2654504A1 - Opening and closing device for movable furniture parts

Info

Publication number: EP2654504A1
Application number: EP11796690.3A
Authority: EP
Inventors: Rainer Weichelt; Janine Mertens; Patrick Freiheit
Original assignee: Paul Hettich GmbH and Co KG
Current assignee: Paul Hettich GmbH and Co KG
Priority date: 2010-12-22
Filing date: 2011-12-13
Publication date: 2013-10-30
Anticipated expiration: 2031-12-13
Also published as: CN103298371A; TW201236605A; CN103298371B; ES2537196T3; WO2012084592A1; DE102010061482A1; EP2654504B1

Abstract

The invention relates to an opening and closing device for movable furniture parts, in particular drawers (3), comprising a pull-in device (40) and a push-out device (6), wherein the push-out device (6) has a carrier (26) pre-tensioned by an energy store (29) which can be locked in an end position of a guideway (22) and coupled to a carriage (15). The device further comprises an adjustable limiting element (23) in order to limit the path of the carrier (26) in the opening direction.

Description

Opening and closing device for movable furniture parts

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 carrier biased by a force accumulator, which can be unlocked in an end position of a guideway and coupled to a carriage and an ejection device ,

There are known opening devices for movable furniture parts that move a movable furniture part in the opening direction via an ejection mechanism {EP 766 939). 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 meet very accurately, 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 having 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. An eie assembly of the limiting element is achieved when the limiting element is designed as a plug-in element which has a plug-in in the guideway stop and in different openings in the housing can be inserted.

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 carriage 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, Mitteis the lever of the driver from the end position is entriegeibar 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 rests against the lever, without the user must move the movable furniture part exactly in 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 energy storage of the ejection device is stretched when closing the movable furniture part, wherein the path for tensioning the power storage is spaced from a closed position, 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 feeder and ejector are preferably

spaced from each other on the movable furniture part and / or furniture body mounted. 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.

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

Figure 1 is a perspective view of a piece of furniture with an opening and closing device according to the invention;

Figure 2 is a perspective view of the pusher of the

FIG. 1;

Figure 3 is an exploded perspective view of an ejection device according to the invention;

Figure 4 is a view of the ejection device in the assembled state;

FIGS. 5 to 12 show several views of the furniture, the ejection device and the feed device in different positions;

Figure 3 is a detail view of the diaphragm gap; FIGS. 14A to 14C show several views when adjusting the diaphragm gap; a view of the opening and closing device in adjusting the. Blendenspaltes; a force-displacement diagram of the opening and closing device, a modified force-displacement diagram with different spring forces, and a view of the ejector with the adjustment Henkel handles 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 angular activator 7 is fixed to a fixed furniture part such as the body wall, the carcass angle of the pullout guide or the guide rail of the pullout guide. 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 shown in Figure 2, the ejection device 6 is mounted on the underside of the drawer 3, while the drawer guide 5 is received within side frames 8 of the drawer 3. On the pullout guide 5 there is a feed device 40, by means of which the drawer 3 is pulled in the closing direction.

The ejection device 6 is shown in detail in FIGS. 3 and 4. 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 2. On the carriage 15, a discharge stop 10 is arranged, in which a magnet 1 1 is received. The magnet 11 can couple to the angular activator 7 and then holds the knock-out stop 0 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 comprises two pins 27, which engage in the guide track 22 and a protruding tip 28, which can be brought into engagement 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 Figure 5, the opening and closing device is 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 Figure 5 is tensioned in the clockwise direction and presses with the arm 33 against the driver 26 so that it moves out of the angled end portion of the guideway 22 and is unlocked. The

Entriegelungskräften by the retractor 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 Figure 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. In this case, the ejection stop 10 resting against the activator 7 and thus the slide 15 of the ejection device has been moved somewhat 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 engaged with the first stop 17 on the carriage 15. In Figure 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 thrust element in the opening direction, wherein the activator 41 has moved the driver 42 along the guideway to an angled end portion at 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.

FIG. 8 shows the position in which the driver 26 of the ejection device strikes against a limiting element 23 which is plugged into the housing 20. The housing 20 has for this purpose a comb 37 which has noses 38 in which the limiting element 23 can be inserted for 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 affects the tensile force of the magnet 1 1, 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.

FIG. 9 shows the position in which the carriage 15 has now reached its end position on the guide track 21. During the further opening movement of the carriage 15 has been pulled along the guide track 21, wherein the second stop 18 has been moved over the top 28 of the driver 26 away. In this case, the abutment 18 was momentarily pressed into the carriage 15 against the force of the spring bar 29 and the abutment 18 with the start-up obliquely moved over the tip 28 of the driver. 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 catchment direction 40 are disengaged and only the tensile force of the magnet 1.1 on the activator 7 must be overcome, with usually the inertial force of the drawer 3 is sufficient. In Figure 10, the pusher is again moved in the closing direction, 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 Figure 1 1, 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 by the force of a pull-in spring in the closing direction. The knock-out device 6 is in the tensioned state, wherein the carriage 15 is moved along the guide track 21.

In Figure 12, the closed position is reached, which is also shown in Figure 5. 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 divide the gap y between the front panel 4 and the furniture body 2 (Figure 13), an adjusting mechanism for the ejection stop 10 is provided on the carriage 15, which has a Versteilweg V.

According to FIGS. 14A to 14C, by turning the nut 13, the ejection stopper 10 can be moved 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 + 1 = V). The adjustment of the diaphragm gap can be carried out either with open or closed push element, with the accessibility to the nut 13 is better given at the bottom of the drawer with open pusher. FIG. 16 shows a force-displacement diagram of the opening and closing device according to the invention for the closing process. 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.

FIG. 17 shows the force-displacement diagram for the opening process. 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 Figure 17 it is shown that the triangle of the spring force of the ejection device can be decomposed into different sections. Both the maximum spring force and the spring travel can be adjusted. In order to change the available energy or the spring travel of the spring 29, according to FIG. 18, the delimiting element 23 can be fixed at five different positions, the distances 51 to 55. In addition, the effectiveness range of the ejection device 6 can be adjusted via the length of the limiting element 23. As a result, the opening and closing device can be adapted to different purposes optimally, because it is perceived by the user as unpleasant when too high Auswerfkräfte and clamping forces are required. On the contrary, it is intended to achieve an open and close opening. 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

2. Furniture carcass

3. drawer

4. Front panel

5. Pull-out guide

6. ejection device

7. Activator

8. side frame

9. angle

10. ejection stop

1 1st magnet

12. Threaded bolt

13. Mother

14th eyelet

15. sledges

16th pin

17th stop

18th stop

19. Spring bar

20. Housing

21. Guideway

22. Guideway

23. Limiting element

25. Recording

26. Driver

27th pin

28th peak

29. Spring

30. Leverage

31st axis

32nd arm

33. Arm

34. stop

35th stop

37. comb

38th Stellnase

40. Feeding device 41. activator

42. driver

43. Housing

44. Cartridge 51. Distance

52. Distance

53. Distance

54. Distance

55. Distance

gap

Route Distance

Versteilweg

Claims

claims

1. Opening and closing device for movable furniture parts, in particular drawers (3), with a collection device (40) and an ejection device (6), wherein the ejection device (6) by a force accumulator (29) biased driver (26), the in an end position of a guide track (22) lockable and with a carriage (15) can be coupled, characterized in that an adjustable limiting element (23) is provided to limit the travel of the driver (26) in the opening direction.

2. Opening and closing device according to claim 1, characterized in that the limiting element (23) in different positions on a housing (20) festleg bar, on which the guide track (20) is formed.

3. opening and closing device according to claim 1 or 2, characterized in that the limiting element (23) is designed as a plug-in element which has a in the guideway (20) insertable stop.

4. Opening and closing device according to one of the preceding claims, characterized in that the limiting element (23) in different adjusting lugs (38) in the housing (20) can be inserted.

5. Opening and closing device according to one of the preceding claims, characterized in that the effective distance of the ejection device (6) is at most twice as long, preferably only 1, 6 times as long as the effective distance of the collection device (40).

6. Opening and closing device according to one of the preceding claims, characterized in that the driver (26) is biased via a force accumulator (29) whose spring force is adjustable.

7. Opening and closing device according to one of the preceding claims, characterized in that on the carriage (15) has two spaced-apart stops (17, 18) are provided, wherein a first stop (17) with the driver (26) in the ejection direction and one second stop (18) in the feed direction with the driver (26) can be coupled.

8. Opening and closing device according to claim 7, characterized in that the effective in the feed direction stop (18) is resilient and in the opening direction of the driver (26) is latching vorbebei moved.

9. 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. Opening and closing device according to claim 9, characterized in that in the closed position the carriage (15) is tensioned in the closing direction by the draw-in device (40) and the holding forces of the driver (26) in the locked position are greater than the triggering sekräfte by the lever (30) against which the carriage (15).

11. Opening and closing device according to claim 9 or 10, characterized in that the lever (30) is rotatably mounted on a housing (20) on which also a guideway for the driver (22) and / or the carriage (15). is formed and has two arms (32, 33) projecting from a rotation axis (31) of the lever (30).

12. Opening and closing device according to one of the preceding claims, characterized in that the ejection device (6) has at least one in the closing direction adjustable ejection stop (10).

13. 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) with a magnet (11) which can be coupled with a fixed metallic activator (7).

14. Opening and closing device according to one of the preceding claims, characterized in that the energy store (29) of the ejection device (6) by closing the movable furniture part (3) is clamped, wherein the path for tensioning the force accumulator (29) spaced from a closed position is arranged.

15. 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 path of the energy accumulator (29) of the ejection device (6).

16. Opening and closing device according to one of the preceding claims, characterized in that the collection device (40) and the ejection device (6) spaced from each other on the movable furniture part (3) and / or the Möbeikorpus (2) are mounted.

17. Opening and closing device according to one of the preceding claims, characterized in that the housing (20) of the ejection device (6) on the underside of a drawer (3) can be mounted.

18. ejection device for movable furniture parts, in particular drawers wherein the ejection device (6) by a force accumulator (29) biased driver (26) which in an end position of a guide track (22) lockable and with a carriage (15) can be coupled, characterized characterized in that an adjustable limiting element (23) is provided in order to limit the travel of the driver (26) in the opening direction.