EP2710211B1 - Actuating drive for a furniture flap - Google Patents

Description

The invention relates to a piece of furniture with a furniture body and a hinged to a horizontal pivot axis, furniture flap, wherein the furniture flap is movably mounted on a furniture body mounted on the furniture body relative to the furniture body, wherein the furniture drive comprises: an associated with the furniture flap actuator arm, wherein on the Stellarm the furniture flap is movable, the actuating arm kraftbeaufschlagende main spring, a lockable opening device for moving the furniture flap from a closed position to an open position, a locking device for locking the opening device, at least in the closed position on the furniture flap or the actuating arm fitting trigger element, wherein the trigger element with the locking device is connected and wherein the locking device can be unlocked by the triggering element in an override of the furniture flap in the closing direction

Furniture flaps are used in a variety of ways. For example, in the AT 009 076 U1 Fold up, Hochfaltklappen, Hochschwenkklappen and high lift doors known. In order to facilitate the opening movement, a so-called touch-latch device (opening device) is arranged in the region of the furniture body. This allows when pressing the closed furniture flap ejecting the furniture flap in the opening direction. In this case, the opening device is mounted in the lower region of the furniture body and acts directly on the furniture flap, the ejector of the opening device rests only on a first ejection path on the movable furniture part. After completing the ejection movement, the flap must be lifted manually, partially supported by the main spring. The embodiment according to Fig. 3 the AT 009 076 U1 forms a generic stranger state of the art, since there is no on the furniture flap or on the actuating arm fitting - but only fixedly connected - trigger element is shown, which must always be adversely affected with the furniture flap or the actuator arm.

From the WO 2011/020130 A1 and the WO 2010/022414 A1 go genre-forming furniture drives or furniture with a Stellarmanordnung and an ejector out. In contrast, the shows WO 2006/113961 A2 a non-generic Ejector with a discharge lever without an actuator arm or without Stellarmanordnung.

A disadvantage of these designs is that especially at high valves, the ejectors only allow a relatively small opening angle of the furniture flap. This is often less than 5 degrees. This means that the user still has to perform a relatively long opening path of the furniture flap automatically. To increase the opening angle, it would be possible to make the ejectors much longer. However, there is the disadvantage that these ejectors protrude far with the door open and are a hindrance to the use of the furniture and affect the aesthetics of the furniture. Another disadvantage is that with very heavy valves, the ejectors (also called TIP-ON) do not have enough power to perform the ejection process. Furthermore, it is disadvantageous that it is often difficult to match the spring force of the ejector to the spring force of the main spring.

The object of the present invention is therefore to provide a given over the prior art improved furniture drive for a movable furniture flap. In particular, the above-mentioned disadvantages are to be eliminated and the user is provided a furniture flap drive available, which significantly increases the ease of use.

This object is achieved for a furniture drive with the features of the preamble of claim 1, characterized in that the opening device is in communication with the actuating arm via a connecting device and that by the unlocked opening device opening force on the actuating arm for opening the movable furniture flap on the actuator arm can be applied. This has the advantage that the opening device no longer acts separately on the furniture flap, but ejects the already associated with the furniture flap actuator arm in the opening direction. As a result, a separate TIP-ON mechanism in the lower part of the furniture body is no longer necessary. Furthermore, a direct power transmission from the opening device to the actuator arm is possible by the connecting device.

According to a preferred embodiment of the present invention can be provided that the trigger element loose on the furniture flap or on the actuator arm is applied. Thus, no fixed connection between the trigger element and the furniture flap or the actuator arm must be given, which would adversely affect wide-open furniture flap, since the trigger element would have to be elaborate, to join the entire path of movement of the furniture flap or the actuator can. Preferably, the trigger element is connected to the locking device via a transmission mechanism, which is preferably formed separately from the furniture flap. This transmission mechanism can be arranged along the side wall of the furniture body and effect the transmission of the triggering. The further down in the area of the furniture body this release element is arranged, the better an already slight movement of the furniture flap in the closing direction can be registered.

In addition, according to the invention, the opening device has an opening spring acting on the actuating arm in the opening direction, wherein the opening spring is formed separately from the main spring. As a result, the furniture drive can be used flexibly with different sized and heavy furniture flaps. It can also be achieved by simple retrofitting with already installed Stellarmanordnungen with an existing main spring.

According to a further preferred embodiment, it is provided that the locking device between the opening spring and the connecting device is arranged to act and prevents in the locking position, a power transmission between the opening spring and the connecting device. That is, the locking takes place in the mechanism between the acting in the opening direction of the opening spring and acting on the furniture flap actuating arm. When unlocking the spring force of the opening spring can unfold and act on the connecting device on the actuator arm and thus on the furniture flap.

It is important that the force acting on the furniture flap opening force is greater at least in a first portion of the opening movement than acting in this section on the actuator arm locking force. This locking force can come from the main spring and / or the weight of the furniture flap itself. However, the main spring is preferably balanced so that it always keeps the furniture flap neutral. This means that the furniture flap can be easily moved by the user and as soon as the user releases the furniture flap, it remains in the release position.

A particular advantage over the prior art is the larger ejected opening angle, wherein the first portion of the opening movement in an opening angle of the furniture flap between 0 ° and 15 °, preferably up to 20 °, no matter how high the furniture flap.

In order to recharge the opening spring, it can be provided that the opening spring of the opening device can be tensioned in an opening angle range of the furniture flap lying outside the first section of the opening movement. As a result, the user automatically loads the spring of the ejection device when closing the movable furniture flap. Preferably, it can be provided in this regard that the opening spring when closing the furniture flap, preferably in an opening angle range between 150 ° and 15 °, more preferably between 75 ° and 25 °, can be tensioned.

Preferably, it can further be provided that the opening device acts only on the connecting device - and not on the furniture flap. That is, the opening device is thus not - as in the prior art - directly on the furniture flap, but unfolds its effect indirectly via a connecting device on the actuator arm. Although it should not be ruled out that the opening spring acts directly on the actuating arm, wherein the opening spring and the actuating arm forms the connecting device, but for the power transmission, the interposition of at least one, the connecting device forming lever cheaper. As a connection device is not considered the furniture flap, but the opening device is connected to the actuating arm via a separate from the furniture flap connecting device.

Preferably, it is further provided that the connecting device between opening device and actuator arm is formed separately from the triggering element. Although it can be provided that the trigger element rests directly on the actuating arm and detects an overpressure, yet the opening force is not transmitted via this trigger element - but via a separate connection device - on the actuator arm. Thereby, the opening force transmission can be made more efficient.

In one embodiment of the present invention, it is particularly preferred that the triggering element, the transmission mechanism, the locking device, the opening device and the connecting device are designed in operation as a structural unit. Thus, the separate in the prior art TIP-ON mechanism is structurally integrated directly into the furniture drive and with the remaining components of the unit directly - and not on the furniture or the furniture flap - connected. Depending on the design of this unit can be applied to a Stellarmanordnung (including main spring, lever mechanism and actuating arm) via a mounting plate or retrofitted (see Fig. 1 to 12 ) or directly integrated into the Stellarmanordnung (see Fig. 13 to 22nd ).

According to a preferred embodiment of the present invention it can be provided that in the closed position of the ejection lever of the opening device, preferably via a pressure roller, abuts on an abutment lever of the connecting device and the ejection lever pivots with unlatched opening device the abutment lever. In order then to achieve the power transmission to the furniture flap, can further be provided that the abutment lever of the connecting device via at least one connecting element, preferably via a connecting pin and preferably form-fitting, is connected to an element of a lever arm connected to the actuating arm. It does not necessarily have to be provided that the said element (or also the actuating arm) is part of a lever mechanism. Rather, such a known lever mechanism as it is eg in the WO 2011/020130 A1 is shown, also by an arrangement according to the DE 20 2005 021 541 U1 be replaced. It is important that the opening force is transmitted via the connecting device to a corresponding element of the lever mechanism or a pressure roller control arrangement.

With the clamping of the ejection device outside (ie not in the last closing section as in the prior art) is also an improved damping when closing the furniture flap possible. This is achieved by a damping device which acts on the furniture flap in the last closing section. Preferably, it can be provided that the damping device acts in the last part of the closing movement a lever of Stellaranordnung damping in the opening direction.

Basically, two embodiments are shown according to the present invention. According to the first embodiment, the touch-latch mechanism can be attached laterally to a known lever mechanism. The second embodiment shows a built-in lever system (Stellarmanordnung) version.

One problem that often arises in triggering an opening device is how to best and most reliably detect the override movement for triggering the opening device. For furniture flaps, this is best possible at the bottom of the furniture flap, since there is the largest pivoting movement. But this is a complex and space-demanding construction of the trigger element and especially the transmission mechanism to the locking device necessary.

To avoid this, the release can be moved relatively close to the pivot axis. However, the closer a detection is to the pivot axis of the furniture flap, the more sensitively and precisely the triggering must react and be set. This is difficult to handle due to the often necessary tolerances.

In both variants is a disadvantage that must be pressed in the detection against the relatively large and heavy furniture drive and against the main spring.

To solve this problem in a furniture drive with an associated with the furniture flap actuating arm, it is provided that the actuating arm is formed in two parts, wherein in the closed position of the furniture flap a first, attached to the furniture flap part relative to the second part, via a lever mechanism (and thereby motion-coupled with the main spring) of the furniture drive, is movable. This means that when pressing on the flap located in the closed position, not the entire lever mechanism must be pressed against the main spring, but only the immediate flap fitting is moved with the first part of the actuator arm.

For this purpose, it is particularly preferably provided that a release element, by which the locking device can be unlocked when the furniture flap is over-pressed in the closing direction, in the closed position of the furniture flap on first part of the actuating arm is applied. Preference may also be provided that the two parts are pivotable relative to each other and that between the two parts in the opening direction acting on the first part of energy storage is arranged.

In principle, it should not be excluded that the furniture flap has a vertical or possibly also inclined pivot axis. Preferably, however, it is provided that the furniture flap is pivotable about a horizontal pivot axis.

Fig. 1 bis 12

die Ausführungsvariante mit seitlich aufgesetzter Öffnungsvorrichtung,

Fig. 13 bis 22

die Ausführungsvariante mit der in den Klappenbeschlag integrierten Öffnungsvorrichtung,

Fig. 23

eine Explosionsdarstellung des zweiteiligen Stellarms,

Fig. 24

einen zusammengebauten Stellarm,

Fig. 25

einen Schnitt durch den Stellarm in Schließstellung,

Fig. 26

einen Schnitt durch den Stellarm in überdrückter Schließstellung,

Fig. 27

eine Ansicht des Möbelantriebes in Schließstellung,

Fig. 28

eine Ansicht des Möbelantriebes in überdrückter Schließstellung,

Fig. 29

eine Seitenansicht des Möbelantriebs beim Öffnen der Möbelklappe und

Fig. 30

eine 3D-Darstellung des Möbelantriebs in überdrückter Schließstellung.

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:

Fig. 1 to 12

the embodiment with laterally attached opening device,

Fig. 13 to 22nd

the embodiment with the integrated in the flap fitting opening device,

Fig. 23

an exploded view of the two-part actuator arm,

Fig. 24

an assembled actuator arm,

Fig. 25

a section through the actuator arm in the closed position,

Fig. 26

a section through the actuator arm in overpressed closed position,

Fig. 27

a view of the furniture drive in the closed position,

Fig. 28

a view of the furniture drive in überdrückter closed position,

Fig. 29

a side view of the furniture drive when opening the furniture flap and

Fig. 30

a 3D representation of the furniture drive in überdrückter closed position.

In both embodiments, elements having the same reference numerals have substantially the same functions.

Fig. 1 shows a furniture drive 51, in the background on the one hand a mounted on a mounting plate 62 lever assembly 57 (actuator arm assembly) with the actuator arm 52 and the main spring 59 is shown and on the other hand in the foreground a module plate 58 with attached opening device 10, connecting device 54 and locking device 17th Auch is the Transmission device 55 is shown, which passes on the housing 68 and the release bar 69 triggered by the furniture flap 11, not shown movement of the trigger element 53 to the locking device 17. According to this Fig. 1 the furniture drive 51 is shown in the closed position SS. In this Fig. 1 is also acting on the lever 72 damping device 13 can be seen, wherein the damping device 13 is fixed to the lever 65 of the lever mechanism 57. In the other figures of the first embodiment, the damping device 13 is not shown, however, it can be seen in the figures of the second embodiment.

Opposite the Fig. 1 is the furniture drive 51 in Fig. 2 shown in complete open position, in which the actuating arm 52 passes through the main spring 59, the boomerangle 61 and the levers 63, 64 and 65 of the lever mechanism 57 in this position. In the element 56 of the lever mechanism 57, a rectangular fitting hole 67 is formed. In this fitting hole, a connecting pin 54c engages positively. This connecting pin 54c is fixedly connected to the abutment lever 54a and passes through the omission 60 in the module plate 58 therethrough. All movements of the push lever 54a and the entire lever mechanism 57 are transmitted via this connecting pin 54c.

In Fig. 3 is again represented by the omission 60 in the module plate 58 through projecting connecting pin 54c. Also, the cover member 62a for the lever mechanism 57 is in Fig. 3 shown.

In Fig. 4 is an exploded view of the attachable to the actuator arm touch-latch mechanism is shown. The essential components are provided with reference numerals. Only a few bolts and other connection components are without reference numerals. More about the individual components / reference signs can be found in the following sequence of motion description.

The sequence of an opening and closing movement for the first embodiment is in the Fig. 5 to 12 shown. It shows Fig. 5 the essential components of the touch-latch mechanism in the closed position SS. This entire mechanism is connected via the module plate 58 with the Stellarmanordnung and conceals them. The Stellarmanordnung itself is in turn attached to the furniture body 26 of the furniture 32 and is about the actuator arm 52 and the flap-side fitting 66 with the furniture flap 11 in conjunction. In this closed position SS, the trigger element 53 is against the furniture flap 11. The locking pin 17e on the ejection lever 10a is held on the retaining tab 17b of the locking device 17, whereby the ejection lever 10a is locked. The opening spring 12 (compression spring) is stretched. The pressure roller 10b connected to the ejection lever 10a is abutted against the abutment lever 54a. The pivot axes 10g and 10o are fixed relative to the module plate 58, as well as the ejection pivot axis 54e. The same applies to the fixed pivot axis 17f. The locking springs 17c and 17d (tension springs) are relaxed.

If now - as in Fig. 6 shown - by pressing in the closing direction SR, the furniture flap 11, the trigger member 53 moves to the left, the trigger member is rotatably connected to the trigger member 70 pivotally connected to the release rod 69 and tilts the locking lever 17a about the fixed pivot axis 17f, so that the retaining lug 17b of the locking lever 17a out of engagement with the locking pin 17e of the ejection lever 10a passes. The pivoting of the locking lever 17a takes place against the spring force of the locking spring 17c.

As soon as the locking pin 17e disengages from the retaining lug 17b, the locking of the opening device 10 is released by the locking device 17 and the opening spring 12 can relax. By this relaxation, the lever 10c of the lever mechanism of the opening device 10 are partially pushed apart and above all, the ejection lever 10a pivots about the pivot axis 10g. As a result, the pressure roller 10b is pressed against the abutment lever 54a and pivots about the ejection lever 54e. Via the connecting pin 54c, this pivoting movement is transmitted to the Stellarmanordnung (in particular its element 56), further on the lever 65 and subsequently to the actuator arm 52 which moves the furniture flap 11 in the opening direction OR, whereby the opening angle γ and the open position OS is reached. According to Fig. 7 the opening spring 12 has completely relaxed and the movable pivot axes 10e and 10f are at their maximum distance from each other. The pivot axis 10f is connected to the sliding piece 10i, which is displaceable along the spring guide 10d. In addition, the opening device 10 has a damping roller 10h. The two locking springs 17c and 17d are stretched. In this Fig. 7 are the components or their reference numerals, which form the opening device 10, the connecting device 54 and the locking device 17, summarized by brackets.

From the position according to Fig. 7 is the furniture flap 11 by hand further in the opening direction OR to the position according to Fig. 8 moves, whereby the connecting device 54 is further pivoted. With this pivoting about the ejection pivot axis 54, the tension curve 54d comes into abutment with the tension roller 10j on the upper lever 10c. By moving the flap 11 upwards, the locking springs 17c and 17d are allowed to relax again, pivoting the ejection lever 10a counterclockwise about the pivot axis 10g, leaving the tension roller 10j in abutment with the pivoting cam 54d. In addition, the locking pin 17e approaches the retaining lug 17b, wherein finally according to Fig. 9 the locking pin 17e latched in the region of the retaining lug 17b of the locking lever 17a. As a result, the locking lever 17a is again pivoted about the axis 17f and the trigger element 53 is moved out of the housing 68. From this position, the opening device 10 is locked by the locking device 17.

As in Fig. 10 shown, lifted on further movement of the furniture flap 11 in the opening direction of the tensioning curve 54d from the tension roller 10j, whereby no power transmission between the connecting device 54 and the opening device 10 takes place.

In contrast, when moving the furniture flap 11 in the closing direction SR according to Fig. 11 the tension curve 54d back into abutment with the tension roller 10j. This can preferably take place in an opening angle range Δ. As a result of this movement, the upper lever 10c is pivoted about the axis 10o via the tension roller 10j and the displacement piece 10i is displaced in an exciting manner along the spring guide 10d against the force of the opening spring 12 and thus the opening spring 12, as a result of which the mobile pivot axes 10e and 10f approach each other , In this case, the movable pivot axis 10e is fixed relative to the mounting plate 58 due to the locking of the ejection lever 10a via the locking pin 17e. This allows the tensioning of the opening spring 12.

According to Fig. 12 the tension roller 10j has moved along the control cam 54d to the end, whereby the opening spring 12 is fully tensioned. The formation of the curve shape of the tension curve 54d takes place from this position Fig. 12 Upon further movement in the closing direction SR, no further tensioning of the opening spring 12. As a result, a retraction device can optionally act on the furniture flap 11 from this opening position of the furniture flap 11. However, it can also be provided that the weight of the furniture flap 11 is compensated by the main spring 59 so that the user can easily close the furniture flap 11. By closing this closes the furniture flap 11 and with this the entire furniture drive 51 back to the position in accordance Fig. 5 and can trigger an active ejection of the furniture flap 11 with the opening device 10 via the actuating arm 52 by overriding the trigger element 53 in the closing direction SR. During the last closing section, the damping device 13 acts on the lever 72 of the lever mechanism 57 and thus dampens the closing movement of the furniture flap 11, whereby a gentle and quiet closing of the furniture flap 11 is achieved.

In Fig. 13 a second embodiment of a furniture drive 51 according to the invention is shown in the assembled state. In this case, the opening device 10 and the connecting device 54 is integrated into the actual Stellarmanordnung and is attached to the mounting plate 62 (and not a module plate 58).

In Fig. 14 is an exploded view of Fig. 13 shown, wherein all essential components are provided with a reference numeral. Some minor components such as connecting bolts or the like have no reference number. The explanation of the principle of operation is also possible without direct naming of these components with reference numerals. In both Fig. 13 and 14 the actuator arm 52 is shown in the closed position.

In the 15 to 22 the furniture drive 51 is shown without furniture body 26 and furniture flap 11. But it applies the same mounting location as the furniture drive 51 according to the first embodiment.

In Fig. 15 is the actuator arm 52 (and thus also the furniture flap 11, not shown) in the closed position SS. In this case, the trigger element 53 is located on Actuator 52 or on the furniture flap 11 itself. This trigger element 53 is connected to the mounting plate 62 stationary pivot axis 70 with the transmission mechanism 55, in this case in one piece. The spring 71 (tension spring) acts on the transmission mechanism 55 such that it always wants to move in a clockwise direction about the pivot axis 70. At its end, the transmission mechanism 55 is connected via a connecting pin 17i with an unlocking element 17h. This unlocking element 17h is pivotable about the ejection pivot axis 54e. Also about the ejection pivot axis 54e, the portion 17g of a kink lever is pivotable. At the other end of this part 17g is connected via the articulated pin 17j with the locking lever 17a. Together 17j, 17g and 17a form the articulated lever. To the buckling pin 17j a locking spring 17d is curved, which wants to push the buckling pin 17j relative to the ejection pivot axis 54e and the retaining tab 17k upwards. In this illustration according to Fig. 15 For example, the buckle pin 17j is slightly above an imaginary line between the ejection pivot axis 54e and the retaining tab 17k. The further movement of the articulated lever 17j upward is prevented by the retaining lug 17b of the locking lever 17a is present at the locking pin 17e. This locking pin 17e is disposed on the tensioning cam 54d. This tension curve 54d, in turn, is connected to the locking lever 17a on the one hand via the retaining-lug bolt 17k and on the other hand via the tension-curve pivot axis 54f to the abutment lever 54a. This abutment lever 54a in turn is pivotally mounted about the ejection pivot axis 54e. In addition, this abutment lever 54a is connected to the connecting lever 54b via the ejection pin 54g. This in turn is connected via the connecting pin 54c to the element 56 of the lever mechanism 57, whereby the movements of the element 56 and the push lever 54a constantly correspond.

The opening spring 12 is fixedly connected at one end to the mounting plate 62 via the mounting elements 10m. At the other end, the opening spring 12 is connected to a guide pin 10n, which in turn is guided in a guide track 10k in the mounting plate 62. In addition, the opening spring 12 is connected via the guide pin 10n to the ejection lever 10a, which in turn is pivotable about the fixed pivot axis 10g connected to the mounting plate 62. At the right lower end, the ejection lever 10a has a pressure roller 10b, which abuts in the slightly depressed area between the abutment lever 54a and the tension curve 54d. In This closed position SS presses the force of the opening spring 12 via the pressure roller 10b on the cocking curve 54b. Since force 17k subsequently reaches the locking lever 17a via the retaining-lug bolt 17c, the articulated-lever bolt 17j is pushed upward in the closed position SS as far as the stop of the retaining lug 17b on the locking peg 17e permits.

If now - as in Fig. 16 is shown in the closing direction SR on the furniture flap 11 and on the actuator arm 52 is pressed, the trigger element 53 is also pressed in the closing direction SR and the transmission mechanism 55 is pivoted against the action of the spring 71 about the pivot axis 70, which in turn is moved about the connecting pin 17i the unlocking 17h counterclockwise about the ejection pivot axis 54. As a result, the unlocking element 17h comes into abutment with the rear part 17g of the articulated lever and thereby moves the articulated lever pin 17j under the imaginary line between the ejection pivot axis 54e and the retaining tab 17k. This is also done against the spring force of the locking spring 17d. As soon as the articulated lever pin 17j passes under the imaginary line, the spring force of the opening spring 12 on the pressure roller 10b and the cam 54d no longer lockingly acts on the locking lever 17a and the retaining lug 17b, but kinks the articulated lever against the spring force of the spring 17d.

As a result, the articulated lever reaches the completely folded-in position in accordance with Fig. 17 in which the articulated lever pin 17j comes to a standstill clearly below the imaginary line between the ejection pivot axis 54e and the retaining tab pin 17k. Simultaneously with the buckling of the articulated lever and the clamping cam 54d is pivoted about the Spannkurveschwenkachse 54f clockwise so that the left-side edges (curves) of the cam 54d and the Anstoßhebels 54a come to lie exactly above each other and overlap presentation. Simultaneously with the pivoting of the cam 54d and the pressure roller 10b begins to roll under relaxation of the opening spring 12, whereby the abutment lever 54a is rotated about the ejection pivot axis 54e counterclockwise. As a result, the open position OS becomes Fig. 18 achieved, in which the actuating arm 52 is shown with the opening angle γ. This opening movement takes place in that with the pivoting of the abutment lever 54 a and the connecting lever 54 b is moved and a pivoting of the element 56 of the Lever mechanism 57 triggers. As a result of this pivoting of the element 56, the lever 65 of the lever mechanism 57 is subsequently moved to the right and the actuating arm 52 together with the furniture flap 11 opens. The main spring 59 is shown in this illustration Fig. 18 already somewhat relaxed compared to the presentation according to Fig. 17 , With the ejection of the dead center in the main mechanism (Stellarmanordnung with main spring 59) is overcome. The damping device 13 is no longer applied to the lever 72 of the lever mechanism 57. Due to the return spring 71, the transmission mechanism 55 has again pivoted about the pivot axis 70, whereby the trigger element 53 as well as the unlocking 17h back to initial position (as in Fig. 15 ) was moved.

Once the opening spring 12 has completely relaxed (as in Fig. 18 ), the furniture flap 11 is moved by hand further in the opening direction OR. Since in this further movement no spring force from the opening spring 12 on the ejection lever 10a and its pressure roller 10b acts on the cam 54d, the locking spring 17d can relax and pushes the articulated lever in the position according to Fig. 19 , In this case, the articulated lever pin 17j is again above the imaginary line between ejection pivot axis 54e and retaining tab 17k and the retaining lug 17b abuts on the locking pin 17e.

If now the furniture flap 11 is moved further in the opening direction (see Fig. 20 ), the tensioning cam 54d disengages from the pressure roller 10b and the complete open position is reached.

In Fig. 21 the movable furniture part (furniture flap 11) is moved in the closing direction SR, wherein in the opening angle range Δ the tensioning of the opening spring 12 begins. Clamping begins in that the locking cam 54d locked by the locking lever 17a and the retaining lug 17b bears against the pressure roller 10b via its tensioning section C and presses the opening spring 12 over the ejection lever 10a and thus tensions it.

This tensioning takes place until the pressure roller 10b has reached the highest point of the tensioning curve 54d and enters the pull-in section E. With the reaching of this Einziehabschnittes E, the opening spring 12 can easily relax (moving from Fig. 22 to Fig. 15 ) and thus actively pulls in the last closing section movable furniture flap 11 a. That is, by passing the peak of the tension cam 54d, the connecting lever 54b is actively rotated clockwise about the ejection pivot axis 54e, so that a catching action on the actuator arm 52 is given. However, this relaxation takes place only until the pressure roller 10b enters the depression between the tensioning cam 54d and the connecting lever 54b. As a result, the closed position SS is again in accordance with Fig. 15 reached. An advantage of the present invention is also that when - in this case active - pulling the damping device 13 allows damping of the opening spring 12 triggered retraction movement, whereby a gentle and braked closing the furniture flap 11 is given.

For both exemplary embodiments, it should also be stated that, for example, in the area of the ejection pivot axis 54e, a synchronization rod can be fastened, which transmits the rotational movement to a, preferably mirror-symmetric, lever mechanism on another side of the furniture body 26.

In Fig. 23 an exploded view of the two-part actuator arm 52 is shown. In this case, the second part 52b of the adjusting arm 52 is forcibly or motion-coupled via the connecting regions 88 to a lever mechanism 57 (not illustrated here). That is, a movement of the second part 52b of the actuating arm 52 always leads to the movement of the lever mechanism 57 and vice versa. On the second part 52b of the adjusting arm 52, an adjusting element 81 is also arranged, by means of which a translatory adjustment of the first part 52a of the actuating arm 52 via the adjusting knobs 83 is possible by turning. In this area, the pivot axis 86 is arranged along which the two parts 52a and 52b to each other against the force of the force accumulator 80 are pivotable. In the region of the second part 52a of the actuating arm 52 a plurality of connecting pins 87 are shown. In the lower region of the second part 52a of the actuating arm 52, the abutment region 82 for a triggering element 53 and the latching element 84 together with the latching spring 85 for attachment to a flap fitting 66 of a furniture flap 11 are shown.

In Fig. 24 is the actuator arm 52 in the assembled state visible, the abutment portion 82 protrudes from the second part 52b of the actuator arm 52.

In Fig. 25 is a section through the actuator arm 52 shown, wherein the energy accumulator 8 (may be designed as a spring, as a rubber buffer or the like) is in a relaxed position.

Since the in Fig. 26 not shown furniture flap 11 is fixedly connected to the first part 52a of the actuator arm 52, by pressing the furniture flap 11 initially moving (pivoting) of the first part 52a of the actuating arm 52 relative to the second part 52b of the actuating arm 52 against the force of the energy storage 80 performed.

One with the Fig. 25 Corresponding representation is in Fig. 27 shown, with the entire furniture drive 51 is in the closed position SS (this representation also corresponds to the Fig. 15 ). It is in Fig. 27 can be seen that the first part 52a of the actuating arm 52 abuts on the abutment region 82 on the trigger element 53. The second part 52b of the adjusting arm 52 is forcibly coupled to the lever mechanism 57 and thus indirectly acted upon by the main spring 59.

In Fig. 28 or 29 it is shown that the first part 52a of the actuating arm 52 can be moved at least as far as the second part 52b of the actuating arm 52 by pressing the furniture flap 11 located in the closed position SS until the trigger element 53 abutting the first part 52a unlocks the locking device 17 whereby opening force for opening the movable furniture flap 11 from the second part 52b of the setting arm 52 via the first part 52a of the setting arm 52 to the furniture flap 11 can be applied via an opening device 10. That is, the opening device 10 can be triggered by pressing the furniture flap 11 without having to work manually against the main spring 59 and the inertia of the entire lever mechanism 57. Rather, only the movement of the furniture flap 11 and the first part 52a of the actuating arm 52 against the trigger element 53 is necessary, which can be done via the transmission mechanism 55, the unlocking of the locking device 17.

In Fig. 29 is shown in accordance with the not shown furniture flap 11 opening furniture drive 51.

In Fig. 30 is one with the Fig. 28 and the Fig. 16 corresponding 3D representation of the furniture drive 51 shown in overpressed closed position ÜS. It is from the Operators by pressing the furniture flap 11 of the first part 52a of the actuating arm 52 and its abutment portion 82 moves so that the release element 17h is moved by the trigger element 53 via the transmission mechanism 55 so down that a release of the locking device 17 takes place.

By the present invention thus a furniture drive 51 for a furniture flap 11 is shown, in which by pressing the furniture flap 11 in the closing direction SR an active and direct ejection of the furniture flap 11 via the actuator arm 52 takes place.

Claims (14)

1. Article of furniture (32) comprising a furniture carcass (26) and a furniture flap (11), pivotable about a horizontal pivot axis, wherein the furniture flap (11) is mounted moveably relative to the furniture carcass (26) by way of a furniture drive (51) that is mounted to the furniture carcass (26), the furniture drive (51) comprising

   - an actuating arm (52) connected to the furniture flap (11), wherein the furniture flap (11) is movable by means of the actuating arm (52),

   - a main spring (59) which applies force to the actuating arm (52),

   - a lockable opening device (10) for moving the furniture flap (11) out of a closed position (SS) into an open position (OS),

   - a locking device (17) for locking the opening device (10), and

   - a trigger element (53) which at least in the closed position (SS) bears against the furniture flap (11) or against the actuating arm (52), wherein the trigger element (53) is connected to the locking device (17) and wherein by the trigger element (53) the locking device (17) can be unlocked when the furniture flap (11) is overpressed in the closing direction (SR),

   characterised in that the opening device (10) is connected to the actuating arm (52) by way of a connecting device (54) and that opening force for opening the moveable furniture flap (11) can be applied to the actuating arm (52) by the unlocked opening device (10), wherein the opening device (10) has an opening spring (12) which acts on the actuating arm (52) in the opening direction (OR) and which is separate from the main spring (59)..
2. Article of furniture as set forth in claim 1 characterised in that the trigger element (53) bears loosely against the furniture flap (11) or the actuating arm (52) and is connected to the locking device (17) by way of a transmission mechanism (55) provided separately from the furniture flap (11).
3. Article of furniture as set forth in claim 1 or 2 characterised in that the locking device (17) is arranged operatively between the opening spring (12) and the connecting device (54) and in the locking position prevents transmission of force between the opening spring (12) and the connecting device (54).
4. Article of furniture as set forth in one of claims 1 through 3 characterised in that the opening force acting on the furniture flap (11) is greater at least in a first portion of the opening movement than a closing restraining force acting on the actuating arm (52) in said portion.
5. Article of furniture as set forth in one of claims 1 through 4 characterised in that the opening device engages only the connecting device (54) - and not the furniture flap (11).
6. Article of furniture as set forth in one of claims 1 through 5 characterised in that the connecting device (54) is provided separately from the furniture flap (11), the actuating arm (52) and the trigger element (53).
7. Article of furniture as set forth in one of claims 1 through 6 characterised in that the trigger element (53), the transmission mechanism (55), the locking device (17), the opening device (10) and the connecting device (54) are in the form of a structural unit.
8. Article of furniture as set forth in one of claims 1 through 7 characterised in that in the closed position (SS) an ejection lever (10a) of the opening device (10) bears preferably by way of a pressure roller (10b) against a thrust lever (54a) of the connecting device (54) and the ejection lever (10a) pivots the thrust lever (54a) when the opening device (10) is unlocked.
9. Article of furniture as set forth in claim 8 characterised in that the thrust lever (54a) of the connecting device (54) is connected by way of at least one connecting element, preferably by way of a connecting pin (54c), and preferably in positively locking relationship, to an element (56) of a lever assembly (57) connected to the actuating arm (52).
10. Article of furniture as set forth in one of claims 1 through 9 characterised by a damping device (13) for the last part of the closing movement of the furniture flap (11).
11. Article of furniture as set forth in claim 10 characterised in that in the last part of the closing movement the damping device (13) acts with a damping action on a lever (72) of the lever assembly (57).
12. Article of furniture as set forth in one of claims 1 through 11, characterised in that the actuating arm (52) is of a two-part structure, wherein in the closed position (SS) of the furniture flap (11) a first part (52a) fixed to the furniture flap (11) is moveable, preferably pivotable, relative to the second part (52b) which is motionally coupled to a lever assembly (57) of the furniture drive (51).
13. Article of furniture as set forth in claim 12 characterised in that a trigger element (53) by which a locking device (17) can be unlocked when the furniture flap (11) is overpressed in the closing direction (SR), bears in the closed position (SS) of the furniture flap (11) against the first part (52a) of the actuating arm (52), wherein the first part (52a) of the actuating arm (52) is moveable by pressure against the furniture flap (11) when in the closed position (SS) relative to the second part (52b) of the actuating arm (52) at least until the trigger element (53) which bears against the first part (52a) unlocks the locking device (17), whereby by way of the opening device (10) opening force for opening the moveable furniture flap (11) can be applied to the furniture flap (11) by the second part (52b) of the actuating arm (52) by way of the first part (52a) of the actuating arm (52).
14. An article of furniture as set forth in claim 12 or 13 characterised in that arranged between the two parts (52a, 52b) is a force storage means (80), preferably in the form of a spring, operative on the first part (52a) in the opening direction (OR).

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