EP3374585A1

EP3374585A1 - Drive device for a movable furniture part

Info

Publication number: EP3374585A1
Application number: EP16791298.9A
Authority: EP
Inventors: Alexander Simon FLOGAUS
Original assignee: Julius Blum GmbH
Current assignee: Julius Blum GmbH
Priority date: 2015-11-12
Filing date: 2016-10-18
Publication date: 2018-09-19
Anticipated expiration: 2036-10-18
Also published as: WO2017079771A1; CN108350714B; EP3374585B1; CN108350714A; ES2899910T3; AT517923A1

Abstract

Drive device (1) for a movable furniture part (2), in particular a door or a flap, with a support (3), with an ejection device (4) which is movable relative to the support (3) and intended for ejecting the movable furniture part (2) from a closed position (SS) in the opening direction (OR), wherein the ejection device (4) has an ejection element (5), which is movably mounted on the support (3), and an ejection force accumulator (6) which acts on the ejection element (5) during the ejection process, wherein the ejection force accumulator (6) has a first force accumulator base (K1) and a second force accumulator base (K2), and with a tensioning device (7) for tensioning the ejection force accumulator (6), wherein the entire ejection force accumulator (6) is movable together with the ejection device (4) relative to the support (3), wherein both force accumulator bases (K1, K2) are movable relative to the support (3) during the tensioning process, wherein both force accumulator bases (K1, K2) are movable relative to the support (3) during the ejection process.

Description

Drive device for a movable furniture part

The invention relates to a drive device for a movable furniture part, in particular a door or a flap, with a carrier, a movable relative to the carrier ejection device for ejecting the movable furniture part from a closed position in the opening direction, wherein the ejection device is a movably mounted on the carrier ejection element and the The ejection element has ejection force accumulator acting upon ejection, wherein the ejection force accumulator has a first force storage base and a second force accumulation base, and a tensioning device for tensioning the ejection force accumulator. Moreover, the invention relates to a piece of furniture with such a drive device.

In the furniture fitting industry there has been an effort for many years to use furniture fittings to support the movement sequence of movable furniture parts. An example of this are so-called touch-latch mechanisms in which an unlocking of a locking device takes place by pressing on the movable furniture part, after which an ejection device ejects the movable furniture part in the opening direction. An important aspect of these mechanisms is the tensioning of the ejection force accumulator necessary for the ejection. The simplest variant consists in that the ejection element is stretched over the same path of movement when closing the movable furniture part again. The disadvantage here is that then an ejection element can protrude or that a combination with a retraction device for automatically retracting the movable furniture part in the closed position is complicated or even impossible.

For this reason, there are already solutions in which already on further opening after ejecting the ejection force memory is stretched again. An example of this is shown in AT 512 699 A1, according to which a rear power storage base is movable relative to a carrier during charging of the energy store. It is thus not pressed in the opposite direction to the ejection force memory, but used so to speak from behind the rear power storage base to the front power storage base. In this drawing, the front power storage base is stationary relative to the carrier, while during ejection, only the rear power storage base is fixed relative to the carrier.

Furthermore, the invention relates to a drive device in which the entire ejection energy storage with the ejection device is mitbewegbar relative to the carrier. An example of this is disclosed in EP 2 279 680 A1.

In addition, the invention relates to a drive device, in which both force storage bases are movable relative to the carrier during clamping. For example, reference is made to DE 10 2010 008 134 U1 1.

The object of the present invention is to provide an alternative to this drive or ejection device drive device. In particular, the tensioning and relaxing of the ejection force accumulator should be changed or simplified.

This is achieved by a drive device with the features of claim 1. Accordingly, the invention provides that when ejecting both power storage bases are movable relative to the carrier. Thus, in contrast to the prior art, not one of the energy storage bases of the ejection force memory is fixed, but at least in sections, both force storage bases are moved relative to the carrier, at least in sections, both during clamping and when relaxing.

Although it could be provided that moves the first power storage base during cocking and relaxing in opposite directions, but it is preferably provided that the first power storage base during ejection and during clamping in the same direction, preferably in the opening direction, is movable relative to the carrier. The same applies to the second power storage base, according to which preferably the second power storage base in the same direction, preferably in the opening direction, is movable relative to the carrier during ejection and during clamping.

In order to enable a tensioning and relaxing of the ejection force memory in a simple manner, it is provided that the first power storage base and the second Power storage base during clamping and ejection are relatively movable. Above all, it is preferably provided in this case that the first power storage base and the second power storage base during clamping and ejection are movable relative to the carrier in mutually different speeds. Due to these different movements, the tensioning and relaxing of the ejection force accumulator takes place.

The configuration of the ejection force accumulator per se is arbitrary. For example, the energy accumulator can act or be formed magnetically. Preferably, however, it is provided that the ejection force accumulator is designed in the form of a spring. It can be provided that this spring is designed as a leg spring, as a spiral spring or the like. In a preferred embodiment, this ejection force accumulator is designed as a tension spring. In principle, it is also possible that the ejection force accumulator is designed as a spring assembly.

For a simple embodiment of the movement transfer is preferably provided that the ejection element has a, preferably linearly displaceable, ejection slide and an ejection force memory acted upon and on the ejection carriage movable, preferably rotatable, mounted ejection lever. The ejection slide is mounted movably on the carrier via a slide guide.

For a simple ejection it is provided that the ejection lever rests against a carrier-resistant repulsion part during ejection. In order to ideally adapt to the movement of a movable furniture part when ejecting the released force of the force accumulator, it can be provided that the ejection lever bears against a guide contour of this carrier-fixed repulsion part.

According to a preferred embodiment of the present invention, it is provided that the tensioning device has a tensioning lever, which is acted upon by the ejection force accumulator during clamping and during clamping to a carrier-fixed clamping part, preferably on a guide contour of this carrier-fixed clamping part abuts. This guide contour can contribute by their design to a smooth clamping, so that a user even the clamping movement not or hardly perceives. Above all, by adjusting the guide contours of the repelling part and the clamping part, the ratio of ejection path to clamping path can be varied. In particular, always the same energy must be introduced into the ejection energy storage, which is also released. By a special configuration of these guide contours z. For example, the ejection path may be relatively short and strong while the tension path is longer and thus appears gentler to an operator.

For tensioning lever may preferably be provided that also this clamping lever on the ejection slide of the ejector movable, preferably rotatable, is mounted.

In a particularly simple and compact embodiment, it is provided that the ejection lever and the clamping lever are fixedly connected to one another and preferably formed in one piece. Thus, one and the same component forms both the ejection lever and the tension lever. Depending on whether the clamping or the ejection takes place, this one component moves in different directions.

Furthermore, in a preferred drive device, a locking device for locking the ejection device in a locking position is provided, wherein the locking device can be unlocked by overpressing the movable furniture part in a lying behind the closed position Überdrückstellung. In a special embodiment variant, it is provided that the locking device has a locking lever which is movable on the ejection lever, preferably rotatable, and has a locking curve formed in or on the ejection slide, wherein the ejection lever engages over the locking lever and a locking pin formed in it in the locking track in FIG the locking position can be locked. In order to transfer the opening movement of the movable furniture part to the drive device, it is provided in one embodiment that the ejection device has a tappet connected to the ejection element and a coupling head for detachably connecting the tappet to the movable furniture part. This detachable connection can be effected via a force-controlled connection (eg magnetically, as in AT 512 699 A1) or, for example, via a path-controlled coupling (eg as in the non-prepublished Austrian patent application A360 / 2015).

In order to bring the entire drive device back into its initial position after clamping, a return device for moving the ejection device is provided relative to the carrier in the closing direction. This return device may be formed for example in the form of a return spring.

Furthermore, it can be provided that the drive device also has a, preferably damped, retraction device for drawing in the movable furniture part from an open position into the closed position. Protection is also desired for a piece of furniture with a drive device according to the invention. It can be provided in principle that the drive device is arranged on the movable furniture part and repels the furniture body. Preferably, however, it is provided that the drive device is arranged on a furniture body and the movable furniture part off or pushes away. The movable furniture part can be designed as a flap, as a door or as a drawer.

Further details and advantages of the present invention will be explained in more detail below with reference to the description of the figures with reference to the exemplary embodiments illustrated in the drawings. Show:

1 shows a piece of furniture with a door and a drive device,

2 shows a piece of furniture with a flap and a drive device,

3 is an exploded view of the drive device,

Fig. 4a to 15a the movement of the drive device in each case in one

Top view and

Fig. 4b to 15b in perspective views of the drive device corresponding to the Fig. 4a to 15a. Fig. 1 shows a furniture 21 with a furniture body 22 and a movable furniture part 2 in the form of a (movable about a vertical axis) door. On the inside of the furniture body 22, a drive device 1 is mounted. Of this drive device 1, especially the plunger 18 can be seen, which is coupled with a mounted on the movable furniture part 2 coupling element 23.

In Fig. 2, a furniture 21 is also shown, in which case the movable furniture part 2 is formed in the form of a flap, which is mounted on the flap fitting 24 and a corresponding lever assembly movable on the furniture body 22. In the lower region of the furniture body 22, the drive device 1 is shown.

In Fig. 3 is a concrete embodiment of a drive device 1 is shown in an exploded view. The drive device 1 has a carrier 3, which may also be designed in the form of a housing. On this carrier 3, a slide guide 33 is formed for the ejection slide 8. This ejection slide 8 forms together with the ejection lever 9, the ejection element 5. This ejection lever 9 in turn is formed integrally with the clamping lever 12 in this embodiment. The ejection lever 9 is rotatably supported via the pivot bearing 32 and the pivot pin 29 on the ejection slide 8. At the front end of the ejection lever 9 is an ejection roller 30, preferably rotatably mounted. On the clamping lever 12, the tension roller 31, preferably rotatably mounted in the same way. At the ejection lever 9 and the second power storage K2 is arranged, on which an end of the ejection force memory 6 attacks. This ejection force memory 6 is formed in this embodiment as a tension spring. At the other end of the ejection force memory 6, the first power storage base K1 is provided, which is attached to the ejection slide 8. On the ejection lever 9, the locking lever 16 is movable via the lever bearing 35, preferably rotatably mounted. At one end of this locking lever 16, a locking pin 36 is formed, which engages in a locking track 17. This locking track 17 is formed in this case on a plate-shaped part which is mounted on the ejection slide 8. The locking track 17 may also be formed directly in the ejection slide 8. The locking track 17 together with the locking lever 16 forms the Locking device 15. The push rod 8 is mounted on the connecting piece 38 of the plunger 18. About a not apparent here coupling head 19 of this plunger 18 with the attachable to the movable furniture part 2 coupling element 23 is detachably connectable. On the support 3, the plunger guide 25 is mounted, from which the plunger 18 is guided. Furthermore, on the support 3 and the repulsion part 10 is arranged, on which the corresponding with the discharge roller 30 guide contour 1 1 is formed. Also, the clamping part 13 is arranged on the carrier 3 and has a corresponding with the tension roller 31 guide contour 14. In addition, the backup drive stop 28 is attached to the carrier 3. This corresponds to the Rückfahrsicherungshebel 26 which is rotatably mounted on the ejection slide 8, and the Rückfahrsicherungsfeder 27th

In Fig. 4a, the drive device 1 is shown in the assembled state in a closed position SS of the movable furniture part 2. The position of the movable furniture part 2, not shown here, is represented by the coupling element 23 arranged on the movable furniture part 2. In Fig. 4a, the locking device 15 is in the locking position VS. In this case, the locking pin 36 of the locking lever 16 is held in the latching recess of the locking track 17. The ejection roller 30 abuts against the guide contour 1 1 of the repulsion part 10. The ejection force memory 6 is stretched and connected to the ejection slide 8 via the first power storage base K1. In the corresponding with Fig. 4a Fig. 4b is again illustrated that the ejection element 5 from the ejection slide 8 and the ejection lever 9 composed. The ejection element 5 in turn together with the ejection force memory 6, the ejection roller 30 and the plunger 18, the ejection device 4. This ejection device 4 is movable in its entirety relative to the carrier 3.

In Fig. 5a, the unlocking of the locking device 15 is shown. This is achieved by pressing in the closing direction SR on the movable furniture part 2 previously in the closed position SS. As a result, the coupling element 23 and with this the plunger 18 and the ejection slide 8 in the closing direction SR is moved. In this case, the pivot pin 29 is moved in the closing direction SR with the ejection slide 8, whereby the ejection lever 9 this Join in movement. But since the ejection lever 9 rests against the guide contour 1 1 of the repulsion part 10, this ejection lever 9 is also rotated or rejected in the clockwise direction. As a result, the locking lever 16 arranged on the ejection lever 9 is also moved relative to the ejection slide 8. Since the locking track 17 is also formed on or in this ejection carriage 8, the locking pin 36 is moved out of the detent recess and pressed against the deflection slope 37, whereby the locking pin 36 passes from the locking section into an ejection section of the locking track 17. As a result, the locking device 15 is unlocked in this overpressure position ÜS. In Fig. 5b, this Überdrückstellung ÜS is shown in a perspective view, it can be clearly seen that the ejection roller 30 abuts the guide contour 1 1 and the ejection lever 9 is slightly rotated about the pivot pin relative to the ejection slide 8.

Once the locking pin 36 has reached the ejection section and a user no longer presses on the movable furniture part 2, the ejection force memory 6 can relax. This relaxation takes place according to FIG. 6a in that the ejection force accumulator 6 designed as a tension spring contracts. Since this ejection force memory 6 acts on the ejection lever 9 via the second force storage base K2 and this ejection lever 9 rests on the repulsion part 10, the expulsion lever 9 is rotated counterclockwise by the contraction force accumulator 6 contracting, as well as the ejection slide 8 via the first force storage base K1 in the opening direction OR moves. Since the ejection slide 8 is connected to the plunger 18 and also the coupling element 23, thus the movable furniture part 2 is moved in the opening direction OR and enters an open position OS. During the rotational movement of the ejection lever 9, the locking lever 16 is further moved in the ejection section of the locking track 17. During this ejection of the movable furniture part 2, both the first power storage base K1 and the second power storage base K2 are moved relative to the carrier 3. Due to the rotational movement of the ejection lever 9 relative to the ejection slide 8, there is also a relative movement between the first force storage base K1 and the second force storage base K2 relative to one another. The ejection movement is controlled by the guide contour 1 1. In Fig. 6a and the return device 20 is shown in the form of a tension spring. This return device 20 is on the one hand on the carrier 3 and on the other hand attached to the ejection slide 8. Fig. 6b corresponds to the representation of FIG. 6a.

In Fig. 7a, the ejection movement has continued. The locking lever 16 has moved further in the locking track 17. The ejection lever 9 has continued to rotate about the pivot pin 29, since the ejection force accumulator 6 has further contracted. As a result, the energy storage bases K1 and K2 are even closer to each other. The reverse locking lever 26 is applied to the reverse drive stop 28, said reverse drive lever 26 has rotated clockwise relative to the ejection slide 8 and designed as a tension spring Rückfahrsicherungsfeder 27 is tensioned. Fig. 7b corresponds to Fig. 7a.

In Fig. 8a, the ejection force memory 6 has completely relaxed, causing the ejection lever 9 has rotated counterclockwise so far that the clamping lever 12 rests on the tension roller 31 on the guide contour 14 of the clamping member 13. This guide contour 14 of the clamping member 13, together with the tension roller 31 and the clamping lever 12, the clamping device 7. In this position shown in FIG. 8a, the ejection process is completed and there is an immediate transition to the clamping operation. If in this position is not actively pulled on the movable furniture part 2 in the opening direction OR, then a return movement of the ejection device 4 via the retraction device 20 is prevented by the Rückfahrsicherungshebel 26 can wedge on one of the teeth of the reverse drive stop 28. FIG. 8 b shows a perspective view of the drive device 1 corresponding to FIG. 8 a.

In FIG. 9a, the movable furniture part 2 has been actively pulled in the opening direction OR. Thus, via the coupling element 23 and the plunger 18 of the ejection slide 8 relative to the carrier 3. Since the pivot pin 29 this movement of the ejection slide joins 8, but the tension pulley 31 rests on the clamping part 13, the clamping lever 12 in the clockwise direction relative to the ejection slide. 8 turned. As a result, there is also a relative movement between the second power storage base K2 and the first power storage base K1, whereby the ejection force memory 6 is stretched again. In this clamping movement, both force storage bases K1 and move K2 relative to the carrier 3. The locking lever 16 moves in this clamping movement again relative to the ejection slide 8 along the locking path 17 in the direction of the detent recess. Fig. 9b corresponds to Fig. 9a, which is also well visible that the guide contour 14 is formed on the clamping part 13 is relatively long, whereby the clamping movement over a longer range of movement of the movable furniture part 2 is carried out as the ejection movement. As a result, the clamping movement is easier for a user.

In Fig. 10a, the clamping lever 12 has rotated together with the ejection lever 9 even further in a clockwise direction, whereby the ejection force memory 6 is even further excited by the force storage bases K1 and K2 move further apart. In Fig. 10a and the return device 20 is even further excited. The locking lever 16 is located even closer to the detent recess. 10b again shows a perspective view of the drive device 1.

In Fig. 1 1 a, the clamping lever 12 has turned so far due to the stop on the guide contour 14 about the pivot pin 29 that the locking lever 16 is locked again in the detent recess of the locking track 17. Also, the ejection force memory 6 is fully stretched again. The energy storage bases K1 and K2 are again far away from each other. It is thus achieved in this open position OS the locking position VS and after the ejection movement and the clamping movement is completed. Fig. 1 1 b corresponds in turn with this Fig. 1 1 a.

Since the locking position VS is reached, the decoupling of the plunger 18 from the coupling element 23 can now take place according to FIG. 12a. In Fig. 12a it can also be seen that the coupling head 19 of the plunger 18 has already released from this coupling element 23. This release can be force-controlled or path-controlled. Fig. 12b corresponds to Fig. 12a. After this decoupling has taken place, the energy store of the return device 20 can relax and moves the entire ejection device 4 relative to the carrier 3 in the closing direction SR (FIGS. 13a and 13b). In FIGS. 14a and 14b, this return movement has continued, with the rear safety lever 26 sliding along with its flattened side along the teeth of the reverse drive stop 28.

In FIGS. 15 a and 15 b, the ejection device 4 is completely retracted by the retraction device 20 into the carrier 3. The movable furniture part 2 is still in the open position OS.

When the movable furniture part 2 is then closed again by hand and / or by a retraction device, the starting position according to FIGS. 4a and 4b is finally reached again, in which the coupling element 23 contacts the coupling head 19 of the plunger 18.

Claims

claims

1 . Drive device (1) for a movable furniture part (2), in particular a door or a flap, with

a carrier (3),

- A relative to the carrier (3) movable ejection device (4) for ejecting the movable furniture part (2) from a closed position (SS) in the opening direction (OR), wherein the ejection device (4) on the carrier (3) movably mounted ejection element (5 ) and an ejection force accumulator (6) which acts on the ejection element (5) during ejection, wherein the ejection force accumulator (6) has a first power storage base (K1) and a second power storage base (K2), and

- A tensioning device (7) for tensioning the ejection force accumulator (6), wherein the entire ejection force memory (6) with the ejection device (4) is mitbewegbar relative to the carrier (3), wherein during clamping both power storage bases (K1, K2) relative to the carrier ( 3) are movable, characterized in that during ejection both force storage bases (K1, K2) relative to the carrier (3) are movable.

2. Drive device according to claim 1, characterized in that the first power storage base (K1) during ejection and during clamping in the same direction, preferably in the opening direction (OR), relative to the carrier (3) is movable.

3. Drive device according to claim 1 or 2, characterized in that the second power storage base (K2) during ejection and during clamping in the same direction, preferably in the opening direction (OR), relative to the carrier (3) is movable.

4. Drive device according to one of claims 1 to 3, characterized in that the first power storage base (K1) and the second power storage base (K2) during clamping and during ejection are movable relative to each other.

5. Antnebsvornchtung according to one of claims 1 to 4, characterized in that the first power storage base (K1) and the second power storage base (K2) during clamping and ejection relative to the carrier (3) are movable in mutually different speeds.

6. Drive device according to one of claims 1 to 5, characterized in that the ejection element (5), preferably linearly displaceable, ejection slide (8) and one of the ejection force memory (6) acted upon and on the ejection slide (8) movable, preferably rotatably mounted Exhaust lever (9).

7. Drive device according to claim 6, characterized in that the ejection lever (9) during ejection to a carrier-fixed repulsion part (10), preferably on a guide contour (1 1) of this carrier-fixed repulsive member (10) rests.

8. Drive device according to one of claims 1 to 7, characterized in that the tensioning device (7) has a tensioning lever (12) which is acted upon during clamping by the ejection force accumulator (6) and during clamping to a carrier-fixed clamping part (13), preferably at a guide contour (14) of this carrier-fixed clamping part (13) rests.

9. Drive device according to claim 8, characterized in that the clamping lever (12) on the ejection slide (8) of the ejection device (4) is movable, preferably rotatably mounted.

10. Drive device according to claim 8 or 9, characterized in that the ejection lever (9) and the clamping lever (12) fixedly connected to each other, and preferably integrally formed, are.

1 1. Drive device according to one of claims 1 to 10, characterized by a locking device (15) for locking the ejection device (4) in a locking position (VS), wherein the locking device (15) by Overpressure of the movable furniture part (2) in a behind closed position (SS) lying overpressure position (ÜS) can be unlocked.

12. Drive device according to claim 1 1, characterized in that the locking device (15) on the ejection lever (9) movable, preferably rotatable, mounted locking lever (16) and in or on the ejection slide (8) formed, preferably heart-shaped, locking track (17 ), wherein the ejection lever (9) via the locking lever (16) in the locking track (17) in the locking position (VS) is lockable.

Drive device according to one of claims 1 to 12, characterized in that the ejection device (4) connected to the ejection element (5) plunger (18) and a coupling head (19) for releasably connecting the plunger (18) with the movable furniture part (2 ) having.

14. Drive device according to one of claims 1 to 13, characterized by a return device (20) for moving the ejection device (4) relative to the carrier (3) in the closing direction (SR).

15. Furniture (21) with a drive device (1) according to one of claims 1 to 14.