WO2012146516A1

WO2012146516A1 - Push-out device for a movable furniture part

Info

Publication number: WO2012146516A1
Application number: PCT/EP2012/057064
Authority: WO
Inventors: Andreas Hettich; Karl-Jürgen Sauter; Dieter Wirths; Lars Schrubke; Patrick Freiheit; Michael Voss
Original assignee: Paul Hettich Gmbh & Co. Kg
Priority date: 2011-04-29
Filing date: 2012-04-18
Publication date: 2012-11-01
Also published as: CN103648332A; DE102011050020A1; TW201247145A

Abstract

The invention relates to a push-out device for a movable furniture part (1), in particular a drawer, comprising at least one ejector unit (10), which includes an ejector for the movable furniture part (1), said ejector being movable by the force of a spring (40), and a central detent mechanism (30), by means of which the spring (40) can be fixed in a tensioned position, wherein the detent mechanism (30) can be unlocked by moving the ejector in the closing direction. In addition, at least one trigger unit is provided, which is spaced from the ejector unit (10) and comprises a feeler, by means of which a movement of the movable furniture part (1) can be detected, wherein the central detent mechanism can be unlocked by means of the trigger unit. Said device prevents misactuation, even if the drawers are wide.

Description

Ejecting device for a movable furniture part

The present invention relates to an ejection device for a movable furniture part, in particular a drawer, with an ejector unit which has an ejector for the movable furniture part, which is movable by the force of a spring, and a central locking mechanism, by means of which the spring in a tensioned position can be fixed, which can be unlocked by moving the ejector in the closing direction of the locking mechanism. There are ejection devices for drawers in which a latching mechanism is unlocked by depressing the drawer located in a closed position, so that an ejector moves the drawer in the opening direction. In this case, such ejection devices can be provided on opposite sides of the drawer. The disadvantage here is that with wide drawers unlocking a locking mechanism on only one side does not lead to an opening, since the locking mechanism is still locked on the opposite side and fixed the drawer. This can lead to malfunction. It is therefore the object of the present invention to provide an ejection device for a movable furniture part that can also be used for wide drawers and safely avoids incorrect operation.

This object is achieved with an ejection device having the features of claim 1.

According to the invention, at least one triggering unit spaced apart from the ejector unit is provided, which has a feeler, by means of which a movement of the movable furniture part can be detected, wherein the latching mechanism can be unlocked by means of the triggering unit. Thereby, the locking mechanism can be unlocked either via the ejector or the button of the trip unit, so that only a single locking mechanism controls the at least one ejector unit. As a result, false actuations are avoided even with wide drawers.

The term ejector unit is intended to describe the mechanical assembly which is responsible for the ejection movement of the drawer from the closed position in the opening direction. The ejector unit comprises a driven ejector that drives the movable furniture part by linear movement, rotary motion or a pivoting movement.

The term of the trip unit is intended to describe the mechanical assembly that detects when the user wants to open the movable furniture part from the closed position. The trip unit therefore includes a button that detects a movement of the movable furniture part, a switch or a pulse of a controller and then unlocks the latching mechanism. It is possible to form the trip unit separately from the ejector unit, ie as separate modules which are connected to one another only via the latching mechanism. Then each assembly can be adapted to the respective requirements. In one embodiment, it is possible for the ejector unit and the triggering unit to form a common mechanical assembly. Then the ejector of the ejector unit can also simultaneously form the button of the trip unit. The latching mechanism preferably has the energy store, by means of which the at least one ejector can be actuated. As a result, the ejector unit is not only controlled by the latching mechanism, but also driven.

According to a further embodiment, each ejector is formed by a lever which is rotatably mounted on a holder. In this case, at least two spaced-apart ejector can be provided, which can initiate a uniform opening movement especially with wide drawers. In the case of the tripping unit, in one embodiment the pushbutton is connected to the latching mechanism via a rod or a rod, so that a precise transmission of movement is ensured for the unlocking process. In a further embodiment, a freewheel is provided at least in the coupling between the latching mechanism and each trip unit. Thus, the triggering request is transmitted to the locking mechanism only of the actuated trip unit. However, when the trigger unit and eject unit form a device, the eject force is transmitted to both eject units. The latching mechanism can be coupled with two spaced-apart tripping units, wherein at least one trip unit is also an ejector unit at the same time. For an ejector with few components Both trigger units can also simultaneously form the ejector units.

Each release unit preferably has a rotatably mounted button, by means of which a linear movement of the movable furniture part in the closed position can be detected and is converted into a rotational movement. As a result, particularly small distances of the drawer in the closed position can cause an unlocking of the locking mechanism. Preferably, at least one ejector of an ejector unit is coupled via a freewheel with the latching mechanism. The freewheel can thereby enable a movement of the ejector relative to the latching mechanism.

The ejector unit and the central latching mechanism are preferably mounted on a drawer. Then, the ejector and / or the buttons of a trip unit may be supported on a contact surface, which is fixed to a furniture body, such as a rear wall or mounted on the furniture body stop. The ejection device according to the invention is used for example in a furniture with a furniture body and at least one drawer. The drawer can be moved via a self-closing into a closed position in the furniture body, this self-closing then takes over the hold for the movable furniture part. Alternatively, the tumbler can also be realized on at least one ejector unit and / or at least one triggering unit; for this purpose, for example, a spring element can be provided that the roller ejector unit.

In the case of a central arrangement of the spring elements, it is possible in the rear region of the furniture body to cover an element over the entire height, e.g. a Traverse, be provided for receiving the spring elements.

Latching mechanism and ejection unit can form a device as well as release unit and ejection unit can form a device.

Of course, the ejection device may also be mounted on the stationary furniture part and eject the movable furniture part. The invention will be explained in more detail with reference to several embodiments with reference to the accompanying drawings. Show it:

Figure 1 is a perspective view of a drawer with an ejection device according to the invention and contact surfaces in the form of attacks, for a better overview of the furniture body is not shown;

Figure 2 is an exploded perspective view of the drawer of

FIG. 1;

Figure 3 is a perspective view of an ejection unit of the ejection device of Figure 1;

FIG. 4 shows an exploded perspective view of the ejection unit of FIG

FIG. 3;

Figure 5 is a perspective view of the latching mechanism of the ejection device of Figure 1;

Figure 6 is an exploded perspective view of the latching mechanism of Figure 5;

Figure 7 is a sectional side view of the latching mechanism of Figure 5;

Figure 8 is a perspective view of the ejector of Figure 1 without drawer;

Figure 9 is a perspective detail view of the Auswerfeinheit;

Figure 10 is a sectional side view of the Auswerfeinheit of Figure 9;

Figure 1 1 is a perspective view of the locking mechanism of the ejection device;

Figure 12 is a sectional side view of the latching mechanism of Figure 1 1, and Figure 13A-E several schematic views of the ejection devices according to the invention.

A drawer 1 comprises a front panel 2, a rear wall 3 and side frames 4. Adjacent to the rear wall 3, an ejection device according to the invention is mounted on the drawer, which drawer 1 is made of a drawer

Can eject closing position in an open position. When closing the drawer 1, the ejector is stretched again. As shown in Figure 2, are located within the side frames 4 pullout guides 5, which are defined by angle 6 on a furniture body and have a plurality of rails, with the aid of the rails 7 of the drawer 1 is movably mounted to the rails. In at least one of the drawer guides 5 is a self-closing 65, which acts as a tumbler in this arrangement.

On a furniture body, an angle 8 is further mounted, which forms a stop surface for each ejector unit 10. In this case, in each case one ejector unit and / or release unit 10 is arranged on opposite sides of the drawer 1, adjacent to each side frame 4. Between the ejector unit and / or triggering unit 10 is a latching mechanism 30. In Figure 3, an ejector unit 10 is shown in detail. The

Ejector unit 10 comprises a rotatably mounted lever 1 1, which has a roller 12 parallel to the shaft 13, which can be applied to a contact surface of the angle 8. The lever 1 1 is rotatably mounted about a shaft 13 which projects beyond a housing of a holder 14. The holder 14 is fixed together with a lid 15 on a mounting plate 16, wherein the mounting plate 16 is guided with an end portion 18 between webs 19, which are formed on the holder 14 and cover 15. The mounting plate 16 further includes elongated holes 17 which are engaged with projections 21, so that the mounting plate 16 is slidably supported on a holding plate 20. The holding plate 20 is fixed on the underside of the drawer 1 via fastening means, such as screws, and here has projections 21 which project into the elongated holes 17 on the mounting plate 16. Furthermore, a receptacle 22 for an adjusting wheel 24 is formed on the holding plate 20, which is rotatably mounted te in a circular opening 23 of the Halteplat- 20. On the adjusting wheel 24, a helical projection 25 is formed, which corresponds to a projection on the underside of the mounting plate 16, wherein the position of the mounting plate 16 can be changed relative to the holding plate 20 by turning the adjusting wheel 24. As a result, a linear adjustment of the mounting plate 16 is given relative to the holding plate 20 and the bottom of the drawer.

FIG. 5 shows the latching mechanism 30 of the ejection device. The latching mechanism 30 comprises a lever 31, which is rotatably mounted about a shaft 61, wherein the shaft 61 is performed by a box-shaped housing 32. The housing 32 is closed on one side by a cover 34 through which the other end of the shaft 61 is performed. As shown in Figure 6, is located in the lever 31 a parallel to the shaft 61 recessed slot 38 having an enlarged end portion 39 on one side. In the slot 38, a control 35 is guided in the form of a rod having on the opposite sides discs 37, on which end pins 36 protrude. The discs 37 are designed so that they can be inserted through the enlarged end portion 39, so that the control element 35 is displaceably guided on the lever 31 and on the opposite sides the discs 37 limit the axial movement of the control element 35. Then only disks 37 and the pins 36 protrude from the opposite sides, each of which is guided in a cam guide 33 on the housing 32 or on the cover 34.

The lever 31 is biased by a force accumulator in the form of a spring 40, wherein the spring 40 is designed as a torsion spring and a leg 41 on the lever 31 and an opposite leg 42 on the housing 32 is supported.

The housing 32 is fixed to a mounting plate 43 which is fixed to the bottom of the drawer 1. The mounting plate 43 has an end portion 44 which is guided between webs 45 on the housing 32 and the cover 34.

About the latching mechanism 30, the lever 31 can be locked against the force of the spring 40. For this purpose, the control element 35 can be moved along the cam guide 33, as will be explained with reference to FIG. In FIG. 7, there is a pin 36 of the control element 35 in a latching receptacle 47, which is arranged on a projection 50 of the cam guide. On the opposite side to the latching receptacle 47 there is a starting bevel 48, by means of which the control element 35 can be moved into an extension channel 49 when the lever 31 is rotated counterclockwise. Befin- det the control 35 with the pins 36 in the region of the Ausfahrkanals 49, the spring 40 can pivot the lever 31 in a clockwise direction. If the latching mechanism 30 is to be locked again, the lever 31 is rotated against the force of the spring 40 and the control element 35 reaches the pins 36 into a retraction channel 51. To avoid incorrect operations, that can

Control element 35 are moved by a further element, for example a magnet in the region of the transition between the extension channel 49 and the entry channel 51. From the entry channel 51, the control element 35 passes into the region adjacent to the latching receptacle 47 on which the control element 35 can be latched when the lever 31 is released. Such locking mechanisms by cam guides are known per se and can be configured in many ways. The curve guides are also referred to as "heart curve".

FIG. 7 also shows a receptacle 46 in the housing 32 for receiving the leg 42 of the spring 40.

In Figure 8, the ejector is shown in the assembled position. The ejector units 10 are each connected via a rod 60 with the middle latching mechanism 30. The drawer 1 is in the closed position, can be unlocked by pressing the front panel 2 in the closing direction of the locking mechanism 30. For this purpose, it is sufficient if the front panel 2 is pressed on one side, so that at least one lever 1 1 is rotated on one side of the drawer 1, so that the rotational movement is transmitted via the rod 60 to the latching mechanism 30. Here, the lever 31 of the latching mechanism 30 is rotated, and thus, as described above, the control element 35 with the pins 36 to move out of the locking receptacle 47. It does not matter whether the rotational movement takes place only by the rotation of a single ejector 1 1 or whether both ejectors 1 1 operated the locking mechanism 30. As soon as an unlocking of the latching mechanism 30 has taken place, the spring 40 can rotate the lever 31 in a clockwise direction, so that via the rods 60 the rotational movement is transmitted to the levers 1 1 of the ejector unit 10. The lever 1 1 press with the rollers 12 on the angle 8, so that the drawer 1 is moved in the opening direction.

If the drawer 1 to be closed again from an open position, first presses the lever 1 1 at least one ejector unit 10 against the angle 8, which also moves the lever 31 of the latching mechanism 30 via the rod 60. Thereby, the control 35 with the pins 36th moved along the cam guide 33 until the pins 36 are arranged adjacent to the locking receptacles 47. If the drawer 1 is now released, the spring 40 presses the pins 36 into the latching receptacle 47, so that the latching mechanism 30 is locked with the tensioned spring 40.

In the closed position, a tumbler of the drawer 1 is effected by a self-closing, which is arranged on at least one of the drawer guides 5, preferably on both drawer guides 5. This ensures that a uniform aperture image is provided by stacked front panel 2 more drawer.

In FIGS. 9 and 10, an ejector unit 10 is shown on which a bar 60 is mounted. The rod 60 is formed as a hollow profile, wherein two inwardly directed webs 62 are provided in the inner circumference, which form stops for the shaft 13. On the shaft 13 projections 64 are provided which can reach 62 in engagement with the webs. Lying the projections 64 on the webs 62, a gap 63 between the projection 64 and the other web 62 is provided, thereby causing that upon rotation of the rod 60 in a rotational direction, a coupling with the lever 1 1 is effected during in the opposite direction a freewheel is available. Such a freewheel leads to the situation that the lever of the locking mechanism 30 can be rotated in a rotational direction independently of the lever 1 1 of the ejector unit 10, in the opposite direction of rotation, however, a coupling is present. This freewheel makes it possible that upon rotation of a lever 1 1 for unlocking the locking mechanism 30 is not automatically rotated the lever 1 1 on the opposite side. Rather, an unlocking of the locking mechanism 30 can be performed only by an ejector unit 10, regardless of the position of the other ejection unit 10th

It is of course also possible, instead of the freewheel between the lever 1 1 of the ejector unit 10 and the lever 31 of the locking mechanism 30 to establish a rotationally fixed connection, so that upon rotation of a lever 1 1 automatically the lever 31 of the latching mechanism 30 and the lever 1 1 of the second

Ejector unit 10 are rotated.

FIGS. 11 and 12 show the latching mechanism 30, which is connected to an ejection unit 10 via rods 60 on opposite sides. The rod 60 has inwardly directed webs 62, the form- firmly abut the shafts 61 of the latching mechanism 30. As a result, a rotationally fixed connection between the rods 60 and the shafts 61 is created. Of course, it is also possible to provide the freewheel in the region of the latching mechanism 30, instead of in the area of the ejection units 10.

In the embodiment shown in Figures 1 and 8, the ejection device comprises a central locking mechanism 30 and two lateral

Auswerfereinheiten 10. It is of course possible to integrate the locking mechanism 30 in one of the ejector unit 10, that is to provide a curve guide in the area of the housing 14 and the lid 15 to lock a lever 1 1 of the ejection unit against the force of a spring 40 , Then, the first ejector unit 10 is provided with an integrally formed latching mechanism, wherein the lever 1 1 of the first ejection unit 10 with a lever 1 1 of a second ejection unit 10 via a rod 60 can optionally be coupled with freewheel. At the second ejector unit 10, however, no

Locking mechanism provided so that only one locking mechanism must be unlocked to trigger the Auswerfbewegung. This has the advantage that, especially with wide drawers, the two latching mechanisms can not interfere with each other.

In the embodiment shown, the ejector units 10 also simultaneously form the triggering units for the latching mechanism 30. The levers 1 1 are insofar the ejectors, which also form a button of a trip unit, which detects in a mechanical manner, whether the drawer is to be moved in the opening direction. The two functions of ejection and release can of course also be implemented in separate assemblies.

FIG. 13 shows different variants of an ejection device according to the invention. FIG. 13A schematically shows an exemplary embodiment in which only two ejection units 10 are provided, which are coupled to one another via a rod 60. On one of the ejector units 10, a latching mechanism 30 is provided, while on the opposite ejection unit 10, the lever 1 1 rotatably coupled to the lever 1 1 of the first ejection unit 10. For the tumbler of the drawer 1 z. B. at least one self-closing 65 is required, in particular on one of the drawer guides. 5

In FIG. 13B, no self-closing mechanism is provided on a pullout guide 5, since the tumbler 1 is locked in a closed position by the ejector. units 10 is made. For this purpose, a spring element may be provided which surrounds the roller 12 on a lever 1 1 resiliently to keep the drawer 1 in a closed position. In Figure 13C, the ejector of Figures 1 and 8 is shown schematically, wherein the tumbler of the drawer 1 in the closed position is not effected by a self-closing, but by a spring element which is arranged on the rollers 12 of the lever 1 1 of the ejector units 10. In the embodiment shown in Figure 13D, the tumbler via the centrally located locking mechanism 30, wherein a spring element, the lever 31 in the closed position resiliently engages to cause a tumbler of the drawer 1 in the closed position. The pictogram of Figure 13E corresponds to the embodiment of Figures 1 and 8, wherein the tumbler of the drawer over at least one

Self-closing is effected, which is arranged on a pullout guide 5.

In the embodiments shown, the lever 1 1 forms one

Ejector unit 10 also the button of a trip unit, so detects a movement of the movable furniture part to unlock the latching mechanism. It is of course also possible to separate these functions from each other, so to mount the button separately from the ejector unit. Such a button may be formed as a rotatably mounted lever or as a linearly movable slide which detects when the movable furniture part is moved in the closed position, then the latching mechanism is unlocked and an ejector unit can eject the furniture part in an open position.

Instead of the two ejector units 10 shown, it is also possible for more than two ejector units to be coupled to a central latching mechanism 30. LIST OF REFERENCE NUMBERS

1 drawer

2 front panel

3 rear wall

4 side frame

5 pullout guide

6 angles

7 track rail

8 angles

10 ejector unit and / or trigger unit

1 1 lever

12 roll

13 wave

14 holders

15 lids

16 mounting plate

17 slot

18 end section

19 bridges

20 holding plate

21 lead

22 recording

23 opening

24 adjusting wheel

25 advantage

30 locking mechanism

31 lever

32 housing

33 curve guide

34 lid

35 control

36 pen

37 disc

38 slot

39 end section

40 spring

41 thighs

42 thighs

43 mounting plate

44 end section

45 footbridge Catch-in run-up bevel Exit-pass-way projection Entrance-channel bar shaft

Stege

gap

Tabs self-closing

Claims

claims

1 . An ejection device for a movable furniture part (1), in particular a drawer, with at least one ejector unit (10) which has an ejector for the movable furniture part (1), which is movable by the force of a spring (40), and a latching mechanism (30 ), by means of which the spring (40) can be fixed in a tensioned position, wherein by moving the ejector in the closing direction of the latching mechanism (30) can be unlocked, characterized in that at least one of the latching mechanism (30) spaced release unit (10) is provided , by means of which a movement of the movable furniture part (1) can be detected, wherein by means of the release unit of the latching mechanism (30)

is unlockable.

2. Ejecting device according to claim 1, characterized in that the latching mechanism (30) comprises the energy accumulator, by means of which the at least one ejector is actuated.

3. Ejecting device according to claim 1 or 2, characterized in that the ejector of the ejector unit (10) also forms the probe of the trip unit.

4. Ejecting device according to one of the preceding claims, characterized in that each ejector is formed by a lever which is rotatably mounted on a holder.

5. Ejecting device according to one of the preceding claims, characterized in that two spaced-apart ejector are provided.

6. Ejecting device according to one of the preceding claims, characterized in that the button of the trip unit is connected via a rod or a rod with the latching mechanism.

7. Ejecting device according to one of the preceding claims, characterized in that the latching mechanism is coupled to two spaced-apart tripping units.

8. Ejecting device according to one of the preceding claims, characterized in that each release unit has a rotatably mounted button, by means of which a linear movement of the movable furniture part in the closed position can be detected and is converted into a rotational movement.

9. Ejecting device according to one of the preceding claims, characterized in that at least one ejector of an ejector unit is coupled via a freewheel with the latching mechanism.

10. Ejecting device according to claim 9, characterized in that the freewheel allows a movement of the ejector relative to the latching mechanism (30) in one direction.

1 1. Ejecting device according to one of the preceding claims, characterized in that the ejector unit and the central locking mechanism is mounted on a drawer.

12. Ejecting device according to one of the preceding claims, characterized in that each button of a trip unit is supported on a contact surface, which is fixed to a furniture body.

13. Furniture with a furniture body and at least one drawer (1), characterized in that the drawer is movable via an ejection device according to one of the preceding claims.

14. Furniture according to claim 13, characterized in that the drawer (1) via at least two pullout guides (5) is mounted and a self-closing (65) is movable into a closed position in the furniture body.