ES2537196T3 - Opening and closing device for mobile furniture parts - Google Patents

Abstract

Opening and closing device for mobile furniture parts, in particular drawers (3), with an insertion device (40) and with an extraction device (6), in which the extraction device (6) has an element of drag (26) prestressed by means of a force accumulator (29), which can be unlocked in a final position of a guide path (22) and can be coupled with a carriage (15), characterized in that an element is provided adjustable limitation (23), to limit the travel of the drag element (26) in the opening direction.

Description

DESCRIPTION

Opening and closing device for mobile furniture parts.

The present invention relates to an opening and closing device for mobile furniture parts, in particular drawers, with an insertion device and with an extraction device, in which the extraction device has a prestressed drag element by means of a force accumulator, which can be unlocked in 5 a final position of a guide path and can be coupled with a carriage and an extraction device.

Opening devices for mobile furniture pizzas are known, which move a piece of mobile furniture in the opening direction through an extraction mechanism (EP 2 208 439 A1). Such opening devices retain the moving piece of furniture in a predetermined closed position, whereby the opening device is unlocked and a piece of mobile furniture is ejected by pulling or pressing the mobile piece. In such opening devices there is the disadvantage that the assembly of the opening device must be carried out very accurately, so that the closed position of the movable furniture pieces is predetermined for the achievement of an attractive screen image.

Therefore, the purpose of the present invention is to create an opening and closing device for movable furniture parts, which is easy to assemble and also ensures comfortable handling. fifteen

This task is solved with an opening and closing device with the characteristics of claim 1.

According to the invention, the opening and closing device comprises an adjustable limitation element, to limit the travel of the drag element in the opening direction. In this way, the opening and closing device can be optimally adapted to the most different application objects, since it is considered unpleasant by users that expulsion forces and tension forces are too high. The path of the extraction device and, therefore, also the path necessary for tensioning the force accumulator can be regulated by means of the limitation element. Shorter voltage paths are considered less disturbing most of the time by the user, since only forces must be applied over a short distance.

Preferably, the limitation element can be fixed in different positions in a housing, in which the guide path is configured. A simple assembly of the limitation element is achieved when the limitation element is configured as a plug element, which has a stop that can be inserted into the guide path and can be plugged into different positions in the housing.

The effective path of the extraction device is preferably at most twice the length, preferably only 1.6 or 1.2 times longer than the effective path of the insertion device. In this way, the extraction device guarantees after unlocking an extraction against the force of the insertion device, but no excessive acceleration of the movable piece of furniture is performed.

According to another configuration, in the carriage two stops are provided spaced apart from each other, so that a first stop can be coupled with the drive element in the extraction direction and a second stop can be coupled in the insertion direction with the drag element. In this way, it is guaranteed that the extraction device is already tensioned before reaching the closed position through the first stop. The active stop in the insertion direction can in this case be elastically configured and can be moved in the opening direction with a retention effect in front of the drag element. The active stop in the closing direction is disengaged outside the drive element, when it is in a tensioned and locked position, for example through articulation during movement along a guide path with an angled end section. 40

According to another configuration, a magnet is arranged in the extraction stop, which can be coupled with a stationary fixed metal activator. In this way, the extraction stop can not only transmit pressure forces but also tensile forces, in particular through the coupling of the extraction stop on the stationary fixed activator the carriage can be pulled along a guide path. This allows a simple decoupling of the first stop from the drag element and a engagement of the second stop in the carriage with the drag element.

In order to adapt the opening and closing device for mobile furniture pieces of different widths and different weights, the force on the drag can be adjusted or alternatively the recoverable energy of the force accumulator. To this end, the force accumulator can be configured as a spring, in which one end of the spring can be fixed on one side in different positions in a housing. Another 50 regulating mechanisms can also be used to adapt the spring force of the extraction device to the desired application object. Alternatively, the energy in the system can be varied through a limitation of the travel for the drag element.

Between a comb, which has regulation projections with each other, and the guide path for the drag element is

You can insert a limitation element for energy regulation.

In accordance with another configuration, a pivoting lever is provided, which configures a stop for the carriage, so that by means of the lever the drag element can be unlocked outside the final position, to activate the extraction device. In this way the closed position through the pivotable lever is predetermined. In this case, the insertion device ensures that the closed position is reached and the carriage rests on the lever, without the user having to move the movable piece of furniture exactly to the closed position.

Preferably, in a closed position, the carriage is tensioned through the insertion device in the closing direction and the retention forces of the drag element in the locked position are greater than the release forces through the lever, in the one that supports the car. In this way a blockage or a mooring of the movable piece of furniture in the closed position is obtained, so that the system is stable when the insertion device is active only in the closed position and tensiones the carriage in the direction of closing.

For a regulation of the screen gap, the extraction device preferably has at least one adjustable extraction stop in the closing direction. In this case, the extraction stop can be moved without stepping by means of a nut, but other regulation mechanisms can also be used.

Preferably, the force accumulator of the extraction device is tensioned during the closing of the piece of movable furniture, so that the path for tensioning the force accumulator is arranged distanced from a closed position, for example at a distance between 2 5 cm In this way, the manipulation is simplified especially since the piece of furniture must no longer be locked exactly in the furniture body. In this case, the insertion device can be activated at the end of the tension path of the force accumulator of the extraction device so that the path between the tension of the extraction device and the actual closed position 20 can be automatically traversed through the device Insertion To avoid hard butt noises, the insertion device can also be configured cushioned.

Preferably, the extraction device has two guide paths. One is used to drive the drag element and is normally made as a crutch curve. The other guide path is used to drive the carriage or the carriage and is preferably made without an angled section. 25

The insertion device and the extraction device are preferably mounted at a distance from each other in the mobile furniture part and / or the furniture body. In this way the construction spaces can be used especially well, for example the housing of the extraction device can be mounted on the bottom side of a drawer, while the insertion device is housed in a side fence of a drawer.

The invention will be explained in detail below with the help of an exemplary embodiment with reference to the 30 attached drawings. In this case:

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

Figure 2 shows a perspective view of the pushing element of Figure 1;

Figure 3 shows an exploded perspective view of an extraction device according to the invention;

Figure 4 shows a view of the extraction device in the assembled state;

Figures 5 to 12 show other views of the furniture, the extraction device and the insertion device in different positions;

Figure 13 shows a detail view of the screen gap; 40

Figures 14A to 14C show several views during screen gap regulation;

Figure 15 shows a view of the opening and closing device during the adjustment of the screen gap;

Figure 16 shows a force-travel diagram of the opening and closing device;

Figure 17 shows a modified force-travel diagram with different spring forces, and

Figure 18 shows a view of the extraction device with the possibilities of regulation through the spring. Four. Five

A piece of furniture 1 comprises a piece of furniture 2 shown schematically, in which a pushing element in the form of a drawer 3 is movable. To this end, extraction guides 5 are provided on opposite sides of the drawer 3, which are fixed over angular 9 in the cabinet body 2. The drawer 3 with the front screen 4 can be ejected through an extraction device 6 in the opening direction, so that the

Extraction device 6 is supported on an angularly shaped activator 7, which is mounted on the furniture body 2. The angularly activated activator 7 is fixed on a stationary fixed piece of furniture such as, for example, the body wall, the angle of the extraction guide body or the guide rail of the extraction guide. In the same way, an integral configuration of the activator 7 is possible angularly, for example, with the angle of the body of the extraction guide or of the guide rail of the extraction guide. The opening and closing device 5 according to the invention is inserted, for example, in combination with a drawer, but it is also possible to use the opening and closing device for other movable pieces of furniture, such as sliding doors, elements of thrust and hatches.

As shown in Figure 2, the extraction device 6 is mounted on the lower side of the drawer 3, while the extraction guide 5 is housed within the side fence 8 of the drawer 3. In the extraction guide 5, 10 is found. an insertion device 40, by means of which the drawer 3 is stretched in the closing direction.

The extraction device 8 is shown in detail in Figures 3 and 4. A two-part housing 20 configured 20 offers a first guide path 21 for a carriage 15. The carriage 15 comprises two pivots 16, which are movable in the path of linear guide 21. In the carriage 15 an extraction stop 10 is arranged, in which a magnet 11 is housed. The magnet 11 can be coupled in an activator 7 angularly and then retains the extraction stop 15 in the activator 7 fixed in the furniture body.

The extraction stop 10 is adjustable in the direction of closing and opening, respectively, so that the extraction mole 10 has a threaded bolt 12, which is guided through two eyelets 14 in the carriage 15. Entity the two eyelets 15 are rotatably retained a nut 13, so that through the rotation of the nut 13 the extraction stop 10 can be moved. 20

In the carriage 15 a first stop 17 is configured, which can be engaged with a drive element 26 in the removal direction. A second stop 18 is provided at a distance from the first stop 17 in the carriage 15, which can be coupled in the closing direction with the drag element 26. The second stop 18 is in this case elastic and comprises a spring rib 19 , which is supported on the bottom of a housing 25 for the stop 18. In this way, the stop 18 can be pressed against the force of the resort rib 19 25 in the carriage 15. The stop 18 also has , an entry chamfer in the section that projects from carriage 15.

A second guide path 22 is configured in the housing 20, in which a drive element 26 of the extraction device 6 can be moved. The drive element 26 comprises two pivots 27, which fit in the guide path 22 and a protruding tip 28, which can be engaged in engagement with the first stop 17 or the second stop 18. The guide path 22 comprises in this case an angled end section, in which the drag element 26 can be locked through the force of a spring 29. The spring 29 can be fixed in this case on the far end of the drag element 26 in different positions in the housing 20 or in components arranged in the housing 20, in order to regulate the force of the spring 29.

A lever 30 is rotatably housed in the housing 20, which fits with an axis 31 in a housing in the housing 20. On both sides of the axis 31, the word 30 has arms 32 33. The arm 32 rests on the 35 closed position in the second stop 18, while the arm 33 of the lever 30 rests on the drive element 28. The stops 34 and 35 made as pivots serve as limiters of the rotary travel for the lever 30. The stop 35 causes that the lever 30 cannot exit from the area of influence of the drag element 26. Again the stop 34 causes that the lever 30 cannot exit outside the area of influence of the stop 18 in the carriage 15. The stops 34 and 35 thus increase the functional safety of the extraction device. 40

In figure 5 the opening and closing device is shown in the closed position, in which the front screen 4 is arranged with a reduced gap and (see figure 13) with respect to the furniture body 2. An insertion device 40 in the extraction guide 5 is engaged through a drive element 42 with an activator 41, which is fixed in the raceway of the removal guide 5. The drive element 42 is movable along of a cam guide in a housing 43 and is tensioned through the force of a spring in the closing direction. The spring is in this case housed in a cartridge 44, in which a shock absorber can also be arranged.

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

Through the force of the spring of the insertion device, the carriage 14, which is supported through the extraction stop 10 in the activated 7 and, therefore, can no longer move along the guide path 21, acts on the arm 32 of the lever 30. The lever 30 is therefore tensioned, through the force of the spring of the insertion device 40 in Figure 5 clockwise and presses with the arm 33 against the drive element 26, so that it moves out of the angled end section of the guide path 22 and is unlocked. The force of the spring 29, which keeps the drag element 26 in the locked position, acts against the unlocking forces through the insertion device 40. Since the force of the spring 29 is clearly greater than the force of the insertion device 40, the drag element 26 is held in the

locked position, when in addition to the insertion device 40 no other force is exerted on the pushing element.

Figure 6 shows the position during unlocking of the opening and closing device. The front screen 4 has been introduced under pressure in an insignificant measure, at most in the measure of the gap and, in the furniture body 2. In this case, the extraction stop 10 that rests on the activator 7 and thus the carriage 5 15 of the extraction device has been moved a little in the closing direction. In addition, the activator 41 of the insertion device has been moved a little in the closing direction.

The pressure 30 of the front screen 4 has rotated the lever 30 through the stop 18 in the carriage 15 in the clockwise direction, so that the arm 33 of the lever 30 moves the drag element 26 out of the final position locked. In this way, the drag element 26 can now be moved through the force of the spring 29 along the guide path 22. The drag element 26 is engaged with the first stop 17 in the carriage 15.

Figure 7 shows the opening and closing device in an ejection position. The front screen 4 is at a distance from the furniture body 2. The insertion device 40 has been tensioned through the movement of the pushing element in the opening direction, so that the activator 41 has moved the dragging element 42 along the guide path to an angled end section, in which the drag element 42 has been pivoted and disengaged out of the activator 41. The extraction device 6 moves as before efficiently and the carriage 15 it moves through the drag element 26 in the opening direction.

Figure 8 shows the position, in which the drag element 26 of the extraction device abuts a limitation element 23, which is inserted in the housing 20. The housing 20 has a comb 37 for this purpose. which has regulation projections 38, in which the limitation element 23 can be inserted for the creation of distances 51 to 55 for the drag element 26. The drag element 26 is now supported in the final position, while the carriage 15 can continue moving along the guide path 21. For the carriage 15 not to remain in this position, the traction force of the magnet 11, which is coupled with the metal activator 25 7 on the furniture body, acts. In this way, the carriage 15 is carried forward along the guide path 21.

Figure 9 shows the position, in which the carriage 15 has now also reached its final position in the guide path 21. During the next opening movement, the carriage 15 has been carried by traction along the path of guide 21, so that the second stop 18 has moved beyond the tip 28 of the drag element 30. In this case, the stop 18 has been introduced under pressure against the force of the spring rib 29 during short time in carriage 15 and stop 18 moves with the entry chamfer on tip 28 of the drive element. Next, the stop 18 is tied through the force of the spring rib behind the tip 28 of the drive element 26.

In this position, the pushing element 4 can now move freely in the opening direction, so that both the extraction device 6 and the insertion device 40 are disengaged and only the tensile force of the magnet must still be exceeded 11 in the activator 7, the inertia force of the drawer 3 being normally sufficient for this purpose.

In Fig. 10, the pushing element moves again in the closing direction, so that firstly the spring 29 of the extraction device 6 is tensioned. To this end, the second stop 18 affects the dragging element. 40 26 and moves it to the angled end section of the guide path 22. When the drag element 26 has reached the angled end section, press the lever 30 counterclockwise. In addition, the tip 28 of the drag element 26 is disengaged from the second stop 18, which can be moved beyond the drag element 26.

The insertion device 40 is still out of engagement, since the activator 41 is arranged slightly in front of the drive element 42.

A position is shown in Fig. 11, in which the insertion device 40 has been activated and the activator 41 is engaged with the drag element 42, which now moves through the force of an insertion spring in the direction of closing. The extraction device 8 is in the tensioned state, so that the carriage 15 moves along the guide path 21. 50

In figure 12 the closed position has been reached, which is also shown in figure 5. The second stop 18 now rests on the arm 32 of the lever 30, while the opposite arm 33 rests on the drag element 28 Since the retention forces through the spring 29 are greater than the release forces through the insertion device 40, the thrust element remains stable in the closed position.

To be able to adjust the gap and between the front screen 4 and the body of the furniture 2 (figure 13), in the carriage 15 is 55

a regulation mechanism is provided for the extraction stop 10, which has an adjustment path V.

Corresponding to Figures 14A to 14C, through the rotation of the nut 13, the extraction stop 10 can be moved in the closing direction or in the opening direction. In this way the gap is regulated and configured as a screen gap in the measure of the path s or t shown (s + t = V). In this case, the adjustment of the screen gap can be carried out optionally when the pushing element is open or closed, the possibility of access to the nut 13 on the lower side of the drawer being better when the pushing element is open.

A force and travel diagram of the opening and closing device according to the invention for the closing process is shown in Figure 16. The closed position is disposed on the left side, in which the insertion device 40 exerts a pulling force on the pushing element. The extraction device 6, which is tensioned during a closing movement, acts at a distance from the insertion device 40, so that a closing force must be applied.

Figure 17 shows the force and travel diagram for the opening process. The triangle for the tension of the extraction device is now displaced, since the extraction device is active after unlocking directly in the closed position. Since the opening force of the device 15 is clearly greater than the closing force of the extraction device, the pushing element 3 is ejected.

Figure 17 shows that the triangle of the force d resort of the extraction device can be broken down into different sections. Both maximum spring force and spring travel can be regulated. For the modification of the recoverable energy or of the spring travel of the spring 29, the limitation element 23 can be set according to FIG. 18 in five different positions, the distances 51 to 55. In addition, 20 through the selection of the length of the limitation element 23 can be adjusted the activity area of the extraction device 6.

In this way, the opening and closing device can be optimally adapted to different application objects, since it is considered unpleasant by the user that expulsion forces and too high tensile forces are necessary. Instead, an easy opening and closing of the gear must be achieved. For 25 heavy push elements, for example sliding doors and wide drawers, higher ejection forces are necessary than for light furniture pieces. In this regard, through the appropriate selection of the active spring force of the extraction device as well as the effective ejection path, an optimal adaptation can be made for the respective application object.

List of reference signs 30

1 Furniture

2 Furniture body

3 drawer

4 Front screen

5 Removal Guide 35

6 Extraction device

7 Activator

8 Side fence

9 Angular

10 Extraction stop 40

11 Magnet

12 Threaded bolt

13 nut

14 Eyelet

15 Cart 45

16 Pivot

17 Stop

18 Stop

19 Spring rib

20 Housing 50

21 Guide path

22 Guide path

23 Limitation element

25 Accommodation

26 Drag element 55

27 Pivot

28 Tip

29 Dock

30 Lever

31 Axis

32 arm

33 Arm

34 Stop 5

35 Stop

35 Comb

38 Regulation outgoing

40 Insertion Device

41 Actuator 10

42 Drag element

43 Housing

44 Cartridge

51 Distance

52 Distance 15

53 Distance

54 Distance

55 Distance

and Interstitium 20

s Path

t Path

V Adjustment travel

  25

Claims (18)

1.- Opening and closing device for moving furniture parts, in particular drawers (3), with an insertion device (40) and with an extraction device (6), in which the extraction device (6) has a drag element (26) prestressed by means of a force accumulator (29), which can be unlocked in a final position 5 of a guide path (22) and can be coupled with a carriage (15), characterized in that an adjustable limitation element (23) is provided, to limit the travel of the drag element (26) in the opening direction. 2. Opening and closing device according to claim 1, characterized in that the limiting element (23) can be fixed in different positions in a housing (20), in which the guide path 10 (20) is configured . 3. Opening and closing device according to claim 1 or 2, characterized in that the limitation element (23) is configured as a plug element, which has a stop that can be inserted into the guide path (20) . 4. Opening and closing device according to one of the preceding claims, characterized in that the limitation element (23) can be inserted in different adjustment projections (38) in the housing (20). 5. Opening and closing device according to one of the preceding claims, characterized in that the effective path of the extraction device (8) is at most twice the length, preferably only 1.6 times longer than the effective path of the insertion device (40). 6. Opening and closing device according to one of the preceding claims, characterized in that the drag element (26) is prestressed on a force accumulator (29), whose spring force is adjustable. 7. Opening and closing device according to one of the preceding claims, characterized in that in the carriage (15) two stops (17, 18) are provided spaced apart from each other, in which a first stop (17) can be coupled with the drag element (26) in the eject direction and a second stop (18) can be coupled in the direction of insertion with the drag element (26). 25 8. Opening and closing device according to claim 7, characterized in that the stop (16) active in the insertion direction is elastically configured and can be moved in the opening direction with a retention effect in front of the element drag (26). 9. Opening and closing device according to one of the preceding claims, characterized in that a pivotable lever (30) is provided, which configures a stop for the carriage (15) and by means of which the element can be unlocked. drag (26) out of the final position. 10. Opening and closing device according to claim 9, characterized in that in the closed position, the carriage (15) is tensioned through the insertion device (40) in the closing direction and the retention forces of the Drag element (26) are greater in the locked position than the release forces through the lever (30), on which the carriage (15) rests. 35 11. Opening and closing device according to claim 9 or 10, characterized in that the lever (30) is rotatably housed in a housing (20), in which a guide path for the element is also configured drag (22) and / or carriage (15) and has two arms (32, 33), which project 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 extraction hole (6) has at least one extraction stop (10) adjustable in the closing direction. 13. Opening and closing device according to one of the preceding claims, characterized in that the extraction device (6) has at least one extraction stop (10) with a magnet (11), which can be coupled with a stationary fixed metal activator (7). 14. Opening and closing device according to one of the preceding claims, characterized in that the force accumulator (29) of the extraction device (6) is tensioned through the closure of the movable piece of furniture (3) , in which the path for the tension of the force accumulator (29) is arranged at a distance from the closed position. 15. Opening and closing device according to one of the preceding claims, characterized in that the insertion device (40) is activated during a closing movement at the end of the tension path of the force accumulator (29) of the device extraction (6). 16.- Opening and closing device according to one of the preceding claims, characterized in that the Insertion device (40) and the extraction device (6) are mounted at a distance from each other in the movable piece of furniture (3) and / or in the furniture body (2). 17. Opening and closing device according to one of the preceding claims, characterized in that the housing (20) of the extraction device (6) can be mounted on the bottom side of a drawer (3). 18.- Extraction device for movable furniture parts, in particular drawers, in which the extraction device (6) has a drag element (26) prestressed by means of a force accumulator (29), which can be lock in a final position of a guide path (22) and can be coupled with a carriage (15), characterized in that an adjustable limitation element (23) is provided, to limit the travel of the drag element (26) in The opening address.  10