EP3319483B1 - Drive device for a movable furniture part - Google Patents

Description

The present invention relates to a drive device having the features of the preamble of claim 1. Furthermore, the invention relates to a piece of furniture with such a drive device for a movable furniture part.

In the furniture fitting industry, efforts have been made for many years to install as many movement functions as possible of the movable furniture parts (eg drawers, furniture doors and furniture flaps) in a drive device.

For example, the shows EP 2 174 572 A1 an opening and closing device from which a retracting device (self-retracting device) for retracting a movable furniture part into a closed position combined with an ejecting device for ejecting the movable furniture part emerges. However, this document shows a generic foreign prior art, since the retractor and the ejector are arranged in separate housings. As a result, the production cost and installation costs are greater. Both when the movable furniture part is opened by overpressing from the closed position and when it is being opened by pulling on the movable furniture part located in the closed position, an unlocking of a switching element takes place.

In a similar way are also in the DE 10 2010 036 903 A1 the collection device and the ejection device formed separately.

A likewise generic external drive device goes out of the WO 2014/165873 A1 , wherein here too the retraction device and the ejection device are formed in separate housings. The ejection device can be coupled via a Koppelmitnehmer with the furniture body. The retractor in turn can be coupled via a Einziehmitnehmer with a catch element of the ejector. When opening through Pressing is done unlocking the ejector. When you open by pulling the ejector remains unlocked and the coupling moves together with the exciting retractor loose against the ejector.

A font, which shows a retraction device for drawing a movable furniture part in a closed position combined with an ejection device for ejecting the movable furniture part in a common housing is the DE 199 35 120 A1 , In this document, all components are arranged movably on a common lower shell, wherein in the representations, the cover of the lower shell is removed. The unlocking is done by over-pressing in a closed position on the movable furniture part. An opening by pulling the located in the closed position movable furniture part is not mentioned in this document.

Another drive device shows the DE 21 2012 000 231 U1 , Therein, both the retraction device and the ejection device are arranged in a common housing, wherein a Einziehschlitten is mounted movably in or on the ejection slide. When opening by overpressure unlocking takes place by a moving from a detent recess locking pin. Even with an opening by pulling the locking pin is released from the detent recess by this locking pin is moved against the force of an overload spring of an overload protection. A disadvantage of this design is that relaxes in such an opening by pulling the ejection force accumulator, which is why this must be stretched again later. Of course, a locking of the locking pin must be performed again.

In a very similar way are also in the WO 2014/008521 A1 the ejection device and the retraction device are arranged in a common housing. Again, when you open by pulling a Unlocking, whereby the locking element (corresponds to the locking pin) is unlocked. Thus, the same disadvantages as in the previous document are given.

Furthermore, the invention relates to a drive device in which the drive device has a pull-in operating mode (hereinafter called first operating mode) and an ejection and retraction operating mode (hereinafter referred to as second operating mode), wherein in the first operating mode when opening and closing the movable furniture part only the retraction device is effective and in the second operating mode when opening and closing the movable furniture part, both the ejection device and the retraction device is effective. Such a drive device is derived from the DE 10 2011 054 441 A1 out.

The object of the present invention is therefore to provide a comparison with the prior art improved drive device. In particular, the existing in the prior art disadvantages should be eliminated.

This is achieved by a drive device having the features of claim 1. Accordingly, the invention provides that the ejection device can be coupled to the retraction device via a thrust element and a coupling element, wherein in the closed position, the coupling element is decoupled from the thrust element, wherein an end portion of the coupling element has bayonet-like coupling parts, wherein in the ejection and retraction operating mode from reaching a dome position, the coupling element is moved with an opening movement by the thrust element and a relative movement of the coupling element to the ejection slide takes place. Thus, it is for the first time possible that in a small-built drive device (ejection device and retractor in a common housing) in the first operating mode, there is no influence on the ejection device. That is, there is no unlocking of the ejection device. Such Drive device makes it possible for the first time that a all-important movement function components-containing, small-built drive device can be attached to a pull-out or on a movable furniture part, without having to know during assembly already know whether the movable furniture part has a handle or handle is formed.

If the movable furniture part has a handle, then the movable furniture part can always be easily operated in the first operating mode of the drive device. That is, the ejection function is indeed included in the drive device in principle, but this does not need to be used because the opening of the movable furniture part is done by pulling on the handle. The ejector simply always stays in the same (locked) position. The Einziehfunktion is used in the first mode of operation as in previously known retractors.

In contrast, if the movable furniture part has no handle, so the movable furniture part can be operated with the same drive device in the second operating mode of the drive device. The opening of the movable furniture part is done simply by pressing on the movable furniture part. Subsequently, the ejection is performed by the ejection device. When closing the movable furniture part is actively pulled by the retractor.

In other words, a drive device according to the invention containing all movement function components can be preassembled on a pull-out guide or on the movable furniture part. In a later sequence, this drive device is operated as a function of the drawer type (with handle or without handle) in the first operating mode or in the second operating mode. In particular, it is provided that in the first operating mode in an opening of the movable furniture part by pulling the movable furniture part of a locking device of the ejection device in the Locked position remains locked and the retractor is independent of the ejector movable.

Preferred embodiments of the present invention are indicated in the dependent claims.

For example, it is preferably possible to provide exactly one driver for the drive device, wherein both the ejection device and the retraction device can be triggered via the same driver. This means that (per pull-out guide) only one catch is provided, via which the ejection movement and the pull-in movement of the drive device to the movable furniture part or on the furniture body can be transferred.

Protection is also desired for a piece of furniture with a furniture body, a movable furniture part and a drive device according to the invention.

Fig. 1

eine perspektivische Ansicht eines Möbels,

Fig. 2

eine Ansicht eines bewegbaren Möbelteils von schräg unten,

Fig. 3

perspektivisch eine Ausziehführung mitsamt Antriebsvorrichtung,

Fig. 4a und 4b

eine Schnittdarstellung und eine Frontansicht von Fig. 3,

Fig. 5a und 5b

eine Schnittansicht und eine Frontansicht einer Antriebsvorrichtung nach dem Stand der Technik,

Fig. 6 und 7

Explosionsdarstellungen der Antriebsvorrichtung aus verschiedenen Blickwinkeln,

Fig. 8

die beiden Gehäuseteile der Antriebsvorrichtung mit Innendetails,

Fig. 9 bis 11

das Ausstoßgehäuse und das Synchronisierungskoppelstück in verschiedenen Stellungen und verschiedenen Blickwinkeln,

Fig. 12

Details des Ausstoßschlittens,

Fig. 13a bis 13d

verschiedene Ansichten und Schnitte des Kuppelelements,

Fig. 14

die Kuppelbahn auf eine gerade Fläche projiziert,

Fig. 15

die Steuerbahn auf eine gerade Fläche projiziert,

Fig. 16 bis Fig. 31

verschiedene Stellungen des Bewegungsablaufs der Antriebsvorrichtung mit diversen Details und

Fig. 32 bis Fig. 34

Ansichten und Details von Sonderstellungen.

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

a perspective view of a piece of furniture,

Fig. 2

a view of a movable furniture part from diagonally below,

Fig. 3

in perspective a pull-out guide together with drive device,

Fig. 4a and 4b

a sectional view and a front view of Fig. 3 .

Fig. 5a and 5b

a sectional view and a front view of a drive device according to the prior art,

6 and 7

Exploded views of the drive device from different angles,

Fig. 8

the two housing parts of the drive device with interior details,

Fig. 9 to 11

the ejection housing and the synchronizing coupling in different positions and different angles,

Fig. 12

Details of the ejection slide,

Fig. 13a to 13d

different views and sections of the coupling element,

Fig. 14

the dome lane is projected onto a straight surface,

Fig. 15

projecting the control path onto a straight surface,

FIGS. 16 to 31

various positions of the movement of the drive device with various details and

FIGS. 32 to 34

Views and details of special positions.

In Fig. 1 is shown in a perspective view of a furniture 50 with a furniture body 51 and three superimposed movable furniture parts 2 in the form of drawers.

Fig. 2 shows in a view obliquely from below the movable furniture part 2, wherein both sides of the pullout guides 52 are shown. On each pull-out guide 52, in particular on each drawer rail 54 of the pull-out guide 52, a drive device 1 for a movable furniture part 2 is arranged. If a synchronization device 76 is present for the ejection devices 3 and 3 'of both drive devices 1, then both drive devices 1, which are preferably mirror-symmetrical to one another, together form a common drive device 1'. On the underside of the carcass rail 53 of both extension guides 52, a pin-shaped carrier 49 is attached via a holding plate, which interacts with the respective drive device 1. In this case, each drive device 1 is associated with the movable furniture part 2 (in particular the drawer rail 54), while the driver 49 is corpusfest. Thus, the drive device 1 abuts, so to speak on the fixed carrier 49. However, the described drive device 1 can also be used in the reverse manner, namely that the drive device 1 is mounted on the furniture body 51 or on the carcass rail 53 and on a Driver 49 - which is then associated with the movable furniture part 2 - acts. As a result, the driver - together with the movable furniture part 2 connected to the driver 49 - is ejected in the opening direction OR from the drive device 1.

In Fig. 3 is in a perspective view of the pull-out 52 comprising the carcass rail 53 and the drawer rail 54 together with the mounted on the drawer rail 54 drive device 1 is shown.

In Fig. 4a a section through the drive device 1 and the pull-out guide 52 in the region of the synchronization rod holder 35 is shown. It can be seen herein that the pull-out guide 52 in addition to the carcass rail 53 and the drawer rail 54 also has a center rail 55 for a full extension. According to the invention, both the ejection device 3 and the retraction device 4 are installed in a single housing, this housing having the housing cover 6 and the housing base plate 7 (The remaining reference numerals will be explained in more detail in later figures.). Preferably, the housing is in two parts and houses the individual components substantially completely. By a housing in which both the ejection device 3 and the retraction device 4 is arranged, a simpler and faster assembly of the drive device is possible.

In contrast, in Fig. 5a a prior art as currently produced and sold by the Applicant. It is noticeable at a glance that the two essential components of the drive device - namely the ejection device 3 and also the retraction device 4 - are formed and arranged separately from each other. D. h., The retractor 4 is mounted on a separate housing on the drawer rail 54, while the ejector 3 is also mounted on a separate housing on the retractor 4 (or on the underside of the movable furniture part 2, not shown). Both for the ejector 3 as well as for the retractor 4 each have a separate driver (not shown here) may be present.

The Fig. 4b and 5b fit each of the previously mentioned Fig. 4a and 5a Both figures show a front view of the respective drive device.

With reference to the Fig. 6 and 7 In the following, the essential components of the drive device 1 will be described. This drive device 1, as the two enclosing and interconnected elements on the housing cover 6 and the housing base plate 7. In principle, of course, more components could form the housing, but it is provided for a simple and inexpensive production as possible that only exactly two housing parts are available. About the housing base plate 7, the drive device 1 is mounted on the drawer rail 54.

The two main components of the ejection device 3 (also called TIP-ON mechanism or touch-latch mechanism) are the ejection force memory 13 and the ejection slide 10, which along a longitudinal axis L are movable. This ejection energy storage 13 is formed in this case as a compression spring. In principle, this ejection energy accumulator 13 and also the ejection slide 10 could be held directly on the housing or on a housing part. In this case, a separate ejection housing is additionally provided, which is formed in the form of an inner ejection housing 11 and an outer ejection housing 12. In these ejection housing parts, the other two components (ejection energy storage 13 and ejection slide 10) are at least partially performed. In order to maintain the positioning of the ejection force accumulator 13 as accurately as possible, the guide pin 29 is provided. At this guide pin 29, the separating element 30 is also guided via a groove (in the guide pin 29) and a projection (on the separating element 30). This shim-shaped separator 30 serves to ensure that at a Rotation of the ejection slide 10 about the aligned parallel to the longitudinal axis L rotation axis X and due to the torsion of the ejection force accumulator 13 no direct torque transmission between ejection energy storage 13 and ejection element 10 takes place. At the power storage end facing the ejection slide 10, a locking pin 36 is arranged. This locking pin 36 forms together with a formed in the ejection housing 11, 12 heart-shaped locking guide track 41 and integrally formed with the synchronizing coupling piece 31 locking element 58 (see Fig. 9 ) a locking device 56 for the ejection device. 3

For the basic function it would be sufficient if the locking guideway 41 is stationary in this ejection housing 11, 12. For a simple synchronization with the second drive device 1 arranged on the other side of the movable furniture part 2, a synchronization coupling piece 31 is provided. This synchronization coupling piece 31 is movable in the longitudinal direction L relative to the ejection housing 11, 12. This synchronizing coupling 31 is acted upon by the synchronizing force accumulator 32 (in this case a compression spring). The synchronization coupling piece 31 can be connected with a synchronization counterpart 33 mounted on the synchronization guide 34 of the housing such that it can be moved, in particular rotatably mounted, in a manner that transmits movement. Specifically, a rack is formed on the synchronization coupling 31, which meshes with a formed on the synchronization counterpart 33 gear. At synchronization counterpart 33, a synchronization rod 77 is attachable. For a secure mounting a synchronization rod holder 35 is provided. For the operation of this entire synchronization device can be exemplified in the WO 2015/051386 A1 to get expelled.

Furthermore, the drive device 1 has a retraction device 4. The essential components of this retraction device 4 are the Einziehkraftspeicher 18, the Einziehschlitten 15, the Einziehriegel 14 and Einziehverriegelungsbahn 17. The Einziehkraftspeicher 18 is held on the one hand to the Einziehkraftspeicherbasis 19 of the housing base plate 7 and the other part of the Einziehschlitten 15. In principle, the Einziehschlitten 15 can be locked directly in an angled end portion of the Einziehverriegelungsbahn 17. In this case, it is provided, however, that the Einziehriegel 14 is pivotally mounted on Einziehschlitten 15 via the Einziehverbindungszapfen 16, whereby the entire Einziehschlitten 15 in a retraction-locking position via a Einziehriegel 14 attached Einziehverriegelungszapfen 23 in the angled end portion of the Einziehverriegelungsbahn 17 is lockable. The Einziehkraftspeicher 18 is designed as a tension spring, which the Einziehschlitten 15 when relaxing as shown in FIG Fig. 6 moved to the right.

This retraction can be done only by the force of Einziehakraftspeichers 18. However, in order to enable a smooth retraction, the drive device 1 also has a damping device 5 for the retraction device 4. For this purpose, the damping device 5 has a cylinder 21 and a piston 20 guided in the cylinder 21. The damping cylinder 21 is held between the housing cover 6 and the housing base plate 7. The damping piston 20 is guided by the damping piston guide 22. This damper piston 20 acts in part during its movement path on the intermediate piece 24. This intermediate piece 24 is mounted on corresponding guide projections in the intermediate piece guide track 39 limited movable.

In order to allow both the retraction device 4 and the ejection device 3 can be accommodated in a single housing 7, 6, the drive device further comprises a thrust element 8 and a coupling element 9. In the representations according to the Fig. 6 and 7 the coupling element 9 is shown in two parts. However, this is advantageous only for manufacturing reasons. Otherwise, this can be Coupling element 9 also be integrally formed. The thrust element 8 in turn is displaceably mounted in the guideway 28 via corresponding projections. The catch fork 25 is guided in this guideway 28. In addition, the catch fork 25 is rotatably mounted on the catching fork bearing 27 on the thrust element 8. Furthermore, between the catch fork 25 and the thrust element 28 of the catch fork power storage 26 (in the form of a leg spring) is arranged, which guarantees a secure locking of the catch fork 25 in the angled end portion of the guideway 28. For a compact design it is provided that the housing 6, 7 of the drive device 1, the coupling element 9 and the ejection slide 10 (carrier) are at least partially sleeve-shaped or cylindrical. In particular, the ejection housing (11, 12) together with the locking guide track 41 formed therein, the coupling element 9 together with the coupling track 45 formed therein and the housing 6, 7 are cylindrical, especially in the area of the control track 40 formed therein, the locking track 41, the coupling track 45 and the control track 40 are each formed on a curved about the rotation axis X, preferably inner, cylinder jacket surface.

In Fig. 8 the housing cover 6 and the housing base plate 7 is shown in the unfolded state, so that the details formed therein are better visible. In both housing parts 6 and 7, the Einziehverriegelungsbahnen 17 for the Einziehriegel 14, the guideways 28 for the catch fork 25 and the thrust element 8 and the intermediate piece guide track 39 are each mirror-symmetrical. In contrast, in the housing base plate 7, the Einziehkraftspeicherbasis 19 and the steam piston guide 22 are formed. It is also apparent on the housing cover 6, the synchronization guide 34 and the opening 57 through which the synchronization coupling piece 31 protrudes from the housing.

Fig. 9 shows in two different perspectives an insight into a half-cut through discharge housing 11, 12. It is evident that both in the inner discharge housing 11 and in the outer discharge housing 12, parts of the locking guide track 41 are formed for the locking pin 36. In addition, the catch recess R is partially formed by the inner discharge housing 11 and partially by a locking element 58. In the lower part of Fig. 9 the locking pin 36 is shown schematically when it is locked in the locking recess R.

When the locking device 56 is unlocked by overpressing the movable furniture part 2 in the closing direction SR, the locking pin 36 is moved in the direction of the deflection slope 42 and deflected over this deflection slope 42, so that the locking pin passes into an ejection section of the locking guide track 41. After releasing the movable furniture part 2, the locking pin 36 contacts the blocking element 58 on an end face (see FIG Fig. 10 ), whereby the force of the ejection force memory 13 ejects the ejection slide 10 and with it the locking pin 36 attached thereto in the opening direction OR.

Subsequently, the blocking element 58, which is formed integrally with the synchronizing coupling piece 31, is moved further in the opening direction OR until the position according to FIG Fig. 11 is reached. In this position, the locking pin 36 is again deflected by an inclined surface in the ejection section of the locking guide track 41 (see under representation of Fig. 11 ).

In Fig. 12 FIG. 3 illustrates in various views that ejection slide 10 has two opposing locking posts 36 at its ejection force accumulator end. At the ejection force storage remote end, a hemispherical stop 43 is provided. This stop 43 serves to minimize the torque between the contacting parts (ejection slide 10 and coupling element 9). In addition, a recess is present at this end, in which a coupling pin 37, not shown here, can be attached.

In the Fig. 13a to 13d are still different, partially cut or partially transparent views of the sleeve-shaped coupling element 9 shown. At this coupling element 9 of the control pin 38 is formed. In addition, the bayonet-like dome parts 44 are present at a head end. In the interior - ie on the cylinder jacket inner surface - this coupling element 9 are two identical, mutually offset by 180 °, coupling webs 45 are formed. These coupling tracks 45 have a continuous freewheeling region 46 for the coupling pin 37 arranged on the ejection slide 10.

In Fig. 14 such a coupling track 45 is shown. This has the three sections freewheel area 46, guide and idle area 47 and holding area 48. In this coupling track 45, the coupling pin 37 is movable.

In contrast, in Fig. 15 the formed on a cylinder jacket-shaped inside of the housing cover 6 control track 40 is projected onto a surface. Depending on the position of the control pin 38 in the control track 40, the coupling element 9 is coupled via the bayonet-type coupling parts 44 to the thrust element 8 (dome area K) or decoupled (decoupling area EK). In addition, the relative rotational movements of the coupling element 9 and the ejection slide 10 are also controlled by this control track 40 to each other about a parallel to the longitudinal direction L aligned axis of rotation X. These entire tax movements go from the following to the following Fig. 16 to 31 shown and explained in more detail movement sequence of the entire drive device 1.

To Fig. 16 be first stated that the drive device 1 is shown in the assembled state without housing cover 6. In addition, the individual components are partially transparent (see dashed line) shown. In Fig. 16 is the movable furniture part 2 in a closed position SS. In addition, the locking device 56 is in locking position VS, since the locking pin 36 (as seen in the top detail) is locked in the locking recess R of the locking guide track 41. The ejection force accumulator 13 presses on the separating element 30 on the locking pin 36 arranged on the ejection slide 10 so that it can not move relative to the inner ejection housing 11 (which is firmly connected to the housing 6, 7). The locking element 58 formed by the synchronization coupling piece 31 forms the latching recess R locking guide track 41. In the lower detail of Fig. 16 In addition, the end region of the coupling element 9 with the bayonet-like coupling parts 44 can be seen. In the closed position SS, the coupling element 9 is not coupled to the push element 8. It continues Fig. 15 show that the Einziehkraftspeicher 18 is not cocked. The Einziehriegel 14 contacted with its catching region 59, the thrust nose 60 of the pusher. 8

If now starting from the closed position SS according to Fig. 16 is pressed in the closing direction SR on the movable furniture part 2, the unlocking takes place as in Fig. 17 is shown. As a result, the second operating mode B2 of the drive device 1 is initiated. Since the drive device 1 is arranged on the movable furniture part 2 in the preferred embodiment, the housing 6, 7 of the drive device 1 in the closing direction SR (in Fig. 17 to the left). However, since the catch lever 25 rests on the body-fixed and schematically drawn driver 49 is on the catch lever 25, connected to the catch lever 25 thrust element 8 and the voltage applied to the thrust element 8 coupling element 9 which in turn applied to the coupling element 9 ejection slide 10 relative to the rest Components of the drive device 1 moves against the force of the ejection force accumulator 13 until the locking pin 36 abuts the Abweisschräge 42 of the locking guide track 41 and from this to the position according to Fig. 17 in the ejection section of the locking guide track 41. This is the location of the Locking device 56 is no longer in the locked position VS but is unlocked (unlocked position ES). The Überdrückweg is about 1 to 3 mm. If the housing 6, 7 is not arranged on the movable furniture part 2 but on the furniture body 51, the same relative movement between the individual components of the drive device 1 takes place in principle when overpressing. However, in contrast to the arrow SR of FIG Fig. 17 - The ejection slide 10 moves over the moving and the movable furniture part 2 arranged driver 49 to the right in the closing direction SR.

If then, starting from this overpressure position ÜS, no longer pressing on the movable furniture part 2, the ejection force accumulator 13 can move according to Fig. 18 start to relax. This relaxing ejection force accumulator 13 thereby presses on the ejection slide 10, whereby the locking pin 36 abuts the front side of the locking element 58 of the synchronizing coupling piece 31. Thereby, the entire synchronization coupling 31 is moved relative to the ejection housing 11, 12. As a result of this movement, the toothed rack of the synchronizing coupling piece 31 also meshes with the toothed wheel of the synchronizing counterpart 33 (see detail of FIG Fig. 18 ). As a result, in the arranged on the other side of the movable furniture part 2, not shown drive device also unlocking triggered (see later Fig. 33 ). Due to the incipient relaxation of the ejection force accumulator 13, the housing 6, 7 is also moved relative to the ejection element 10, the coupling element 9, the thrust element 8 and the catch fork 25 in the opening direction OR. Since the pusher 8 entrains the Einziehriegel 14 via the thrust nose 60, and the clamping of Einziehkraftspeichers 18 begins. Therefore, the spring force of the ejection force accumulator 13 is greater than the spring force of Einziehkraftspeichers 18. For explanation in the Fig. 16 to 18 each sub-areas, especially the outer ejection housing 12, partially hidden, so that a better insight into the interior of the ejection housing 11, 12 is possible.

According to Fig. 19 the movable furniture part 2 was further ejected and it is achieved a first slight open position OS. Due to the design of the locking guide track 41 in the outer ejection housing 12 - as can be seen from the detail view from below - the locking pin 36 is further deflected, so that this the locking element 58 evades (see also Fig. 11 ). After the locking pin 36 in this position no longer presses on the synchronizing coupling piece 31, the synchronizing force memory 32 can relax again and moves the synchronizing coupling piece 31 back into the position z. B. according to Fig. 16 ,

In Fig. 20 Now the ejection or opening movement has continued. The ejection energy storage 13 has already relaxed to a good part, at least so far that the Einziehkraftspeicher 18 is fully stretched. In this fully cocked position of the retractable force accumulator 18, the Einziehriegel 14 has pivoted about the Einziehverbindungszapfen 16 relative to the Einziehschlitten 15, so that the Einziehverriegelungszapfen 23 is locked in the angled end portion of Einziehverriegelungsbahn 17 (see detail to Fig. 20 ). By this pivoting movement and the thrust nose 60 of the pusher 8 is no longer in the catching region 59 of the Einziehriegels 14. In this Fig. 20 It can also be seen that the intermediate piece 24 has entered into an end stop of the intermediate piece guide track 39 due to the trailing movement of the damping piston 20. Furthermore, it is especially important too Fig. 20 (As well as to the following figures) to mention that in each case the housing cover 6 is partially faded in. This is so far cut or faded in that in the remaining housing cover 6 shown exactly the control track 40 remains. This illustration is for illustrative purposes only. So can be in Fig. 20 recognize that the control pin 38 on the coupling element 9 already a considerable part of the ejection control track area 61 (see also Fig. 15 ) has covered.

In the Fig. 21 to 31 is an outer portion of the housing cover 6 hidden in the respective upper overall view, so that in the remaining inner region of the housing cover 6, the position of the control pin 38 in the control track 40 is clearly visible. In the lower overall views of this Fig. 21 to 31 this housing cover 6 is completely hidden. For this, however, an outer region of the coupling element 9 is hidden in each case, so that in the remaining inner region of the coupling element 9, the position of the coupling pin 37 in the coupling track 45 is clearly visible. In between, details of the respective overall view are always displayed.

According to Fig. 21 the ejection force accumulator 13 has completely relaxed. This is in the top detail of Fig. 21 on the one hand, it can be seen that the pusher element 8 has moved further away from the Einziehriegel 14 of the tensioned retraction device 4. On the other hand, the control pin 38 has moved through the dome control track area 62 of the control track 40. As a result, a rotational movement of the coupling element 9 is triggered relative to the housing cover 6, whereby the bayonet-type coupling part 44 of the coupling element 9 - as in the lower detail of Fig. 21 seen - engages a projection 71 formed on the thrust element 8. As a result, the decoupling position EK is no longer given, but the coupling position K between thrust element 8 and coupling element 9 is reached. From this position according to Fig. 21 the further opening movement takes place without being influenced by one of the energy storage devices 13 or 18. The further opening movement can be effected by the momentum of the force introduced by the ejection energy accumulator 13 into the movable furniture part 2 or by active pulling on the movable furniture part 2.

By this further opening movement of the control pin 38 is in accordance Fig. 22 further moved by the shift control track area 63 of the control track 40. From the position according to Fig. 21 Also, the ejection slide 10 can no longer move, since an end stop of the locking pin 36 in the discharge housing 11, 12 is reached (not shown). Since reaching the Coupling position K, the coupling element 9 is moved in a further opening movement by the thrust element 8, a relative movement of the coupling element 9 to the ejection slide 10. Thereby, the ejection force storage remote end of the ejection slide 10 arranged coupling pin 37 passes from the freewheeling region 46 in the guide and idle region 47 of Coupling track in the coupling element 9. In the lower detail of Fig. 22 this is evident. For an explanation, in this detail-similar to the upper detail of the housing cover 6 -an outer area of the coupling element 9 is hidden, so that a direct view of the remaining guide track 45 in the coupling element 9 is possible. This, too, is for illustrative purposes only.

Finally, according to Fig. 23 completed the remaining opening path, so that the catch fork 25 has been deflected in the angled end portion of the guideway 28. By catching fork power storage 26, the catch fork 25 is held in this position. With this residual opening movement has also according to the lower detail of Fig. 23 the coupling pin 37 moves on the ejection slide 10 in the angled holding portion 48 of the coupling track 45 of the coupling element 9. Due to the oblique design of the coupling track 45 in this holding area 48, the coupling element 9 is rotated relative to the ejection element 10. This rotational movement also causes, according to the upper detail of Fig. 23 the control pin 38 has been moved by the deflection control track area 64 of the control track 40. In Fig. 23 the driver 49 has just contact with the fork 25.

In contrast, in Fig. 24 the driver 49 is already lifted or removed from the catch fork 25. As a result, the movable furniture part 2 is in a freewheel. During this freewheeling all components of the drive device 1 remain in their position. D. h., The Einziehkraftspeicher 18 is stretched and the ejection force accumulator 13 is relaxed.

According to Fig. 25 Since the driver 49 comes into contact with the catch fork 25, the catch fork 25 is released from the angled end portion of the guideway 28 against the force of the catch fork force accumulator 26. According to Fig. 25 has already shifted over the pusher 8, the adjacent coupling element 9 is slightly to the right. Since the ejection element 10 is acted upon by the ejection force memory 13, the coupling pin 37 has according to the lower detail of Fig. 25 on a at least at right angles to the longitudinal axis L aligned or slightly undercut retaining surface 72 of the control path 45 is applied. Since in this case the forces acting from the coupling element 9 substantially perpendicular to the coupling pin 37, the coupling pin 37 is taken from the coupling element 9 in a further insertion movement. In this insertion movement, the control pin 38 moves through the straight clamping control track area 65 of the control track 40. This is mainly caused by the fact that the coupling pin 37 is located in the undercut holding surface 72.

From the position according to Fig. 25 up to the position according to Fig. 26 the ejection force accumulator 13 is stretched by the ejection element 10 is moved over the catch fork 28, the thrust element 8 and the coupling element 9 via the voltage applied to the support surface 72 of the control track 45 coupling pin 37 against the force of the ejection force accumulator 13. In Fig. 26 the control pin 38 has already covered part of the way in the deflection control track area 66 of the control track 40. This deflection control track area 66 causes a rotation of the coupling element 9 relative to the housing cover 6. By this rotation of the coupling element 9 is simultaneously the coupling pin 37 according to the lower detail of Fig. 26 detached from the holding portion 72 of the coupling track 45 and enters a sloping region 73 of the control track 45. When this oblique area 73 in the system of ejection energy storage 13 is still stretched. Due to the investment in the oblique region 73, the coupling pin 37 would like to dodge upwards relative to the oblique region 73 or push the coupling element 9 downwards. Both movements are in the position according to Fig. 26 not yet possible. A further downward movement of the coupling element 9 relative to the coupling pin 37 is in fact only possible until the control pin 38 mounted on the coupling element 9 rests in the holding control track region 67 of the control track 40. That is, in the upper detail of Fig. 26 dashed line position of the control pin 38, the relative movement between the housing cover 6 and coupling element 9 is just not so far advanced that the coupling pin 37 could come into the leadership and no-load area 47 of the coupling track 45. On the other hand, a relative movement of the coupling pin 37 to the coupling element 9 upwards is not possible, since the ejection force accumulator memory facing end of the ejection slide 10 of the locking pin 36 can not move upwards, since the locking pin 36 is still in the clamping portion 78 of the locking guide track 41.

In Fig. 27 However, the ejection force memory 13 has now been stretched so far that the locking pin 36 is no longer held in the clamping portion 78, but can get into a curved portion 79 of the locking guide track 41. This movement of the locking pin 36 in the cam portion 79 is controlled by the coupling track 45. D. h., As in Fig. 27 In the left-hand detail, yes, the coupling pin 37 is located on the inclined portion 73 of the control path 45 at. Since the locking pin 36 has reached the curve portion 79, the ejection slide 10 can now turn.

This rotational movement is adjusted so that the coupling pin 37 reaches the guide and idle region 47 of the control track 45 when the locking pin 36 is located exactly in a pre-locking section 74 of the locking guide track 41 oriented perpendicular to the longitudinal axis L. Fig. 28 ). While the locking pin 36 is in this Vorverriegelungsabschnitt 74, the ejection force accumulator 36 is tensioned and a Vorverriegelungsstellung VV is reached. For details on this Vorverriegelungsstellung VV is exemplified in the WO 2014/165878 A1 directed. This Vorverriegelungsstellung VV allows a Push-through protection, so that not undesirable when closing immediately triggers again. In Fig. 28 is also recognizable that immediately after reaching the Vorverriegelungsstellung VV or reaching this position, the thrust lug 60 of the thrust element 8 engages in the Einziehriegel 14 and this triggers from the angled end portion of the Einziehverriegelungsbahn 17. As a result, the Einziehkraftspeicher 18 begins to relax and the movable furniture part 2 is actively pulled in the closing direction SR.

In Fig. 29 about half of the Einziehweges already covered. The Einziehkraftspeicher 18 has thus already relaxed to a good part. This retraction movement is damped by the damping piston 20 of the damping device 5, in that the damping piston 20 acts on the thrust element 8 in a braking manner via the intermediate piece 24. In the upper detail of Fig. 29 the control pin 38 has reached the latching control track area 68 of the control track 40. Due to the oblique configuration of this latching control track area 68, the coupling element 9 is rotated relative to the housing cover 6 upwards. Since at the same time the coupling pin 37 abuts the guide and idle region 47 of the upwardly rotating coupling track 45 of the coupling element 9, and the ejection slide 10 is slightly rotated upwards. As a result, the locking pin 36 comes in accordance with the right lower detail of Fig. 29 Thus, the movement of the locking pin 36 from the Vorverriegelungsabschnitt 74 in the locking recess R via the control track 40 and the coupling track 45 and the associated control pin 38 and uncoupling pin 37 is controlled , The control track 40, the control track 38 guided in the railroad track 40, the coupling track 45 in the coupling element 9 and the coupling pin 37 guided in the coupling track 45 and arranged on the ejection slide 10 together form the joint pin the control device for controlling the movement of the arranged on the ejection slide 10 and guided in the locking guide track 41 locking pin 36th

According to Fig. 30 Finally, the locking pin 36 has reached the locking recess R and the locking device 56 is in the locking position VS. At the same time, according to the detail at the bottom left, the coupling pin 37 is located in the freewheeling area 46 of the coupling track 45. In the detail shown above, the control pin 38 has moved into the uncoupling control track area 69 of the control track 40. As a result, a rotational movement of the coupling element 9 relative to the housing cover 6 by 70 ° to 150 °, preferably by about 120 °, triggered. In order not to hinder this relatively large rotational movement of the coupling element 9, the coupling pin 37 is in the freewheeling region 46 of the coupling element 9, since the ejection slide 10 can not rotate due to the locking of the locking pin 36. Also, the ejection slide 10 is freely rotatable by this freewheeling region 46 relative to the coupling element 9. In Fig. 30 is the retraction by the retractor 4 almost completed.

In Fig. 31 Finally, the closed position SS of the movable furniture part 2 is reached. The control pin 38 is again in a Entkuppelbereich EK the control track 40, whereby the coupling between coupling element 9 and thrust element 8 is repealed. Fig. 31 corresponds again to the starting position according to Fig. 15 ,

In Fig. 32 is yet another important function of the present drive device 31 can be seen. With the present drive device 1, it is possible in a first operating mode B1, without having to use an overload device or other aids to pull the movable furniture part 2 from the closed position SS in the opening direction OR, without causing damage. D. h., It is not only an opening of the movable furniture part 2 by overpressures and thereby triggered unlocking as possible in the second operating mode B2, but it can also be a pulling on the movable furniture part 2. This is possible because in the closed position SS, the coupling element 9 is decoupled from the thrust element 8 is. Thereby, the locking position VS of the locking device 56 is maintained and also the ejection device 3 remains unchanged. With this opening by pulling in the first operating mode B1, only the retraction device 4 is actively clamped manually, so that a re-closing guarantees a gentle closing process. For more information on this feature can be exemplified on the WO 2014/165873 A1 to get expelled.

In principle, it is possible for the drive device 1 for the ejection device 3 and the retraction device 4 to have separate carriers for coupling to the movable furniture part 2 or to the furniture body 51. For a simple training and assembly, however, it is preferably provided that the drive device 1 has only one driver 49. About this one driver 49, both the ejector 3 and the retraction device 4 can be triggered. By pulling on the movable furniture part 2 located in the closed position SS, the first operating mode B1 can be activated via this one driver 49. By pressing on the movable furniture part 2 located in the closed position SS, the second operating mode B2 can be activated via this one driver 49.

In Fig. 33 is a further function of the drive device 1 is shown. According to this illustration, the unlocking of the locking pin 36 from the locking recess R is not carried out by overpressing, but in that the located on the other side, in Fig. 2 shown, drive device is unlocked by overpressing. About the local locking device 56 and especially by the moving when opening synchronizing coupling piece 31 is a movement to the synchronization counterpart 33 and the in Fig. 2 shown synchronization bar 76 forwarded, so that in the in Fig. 33 apparent drive device 1 also in the just beginning opening movement, the synchronization coupling 31 is moved. Due to the fact that this synchronization coupling piece 31 is integral with the Locking element 58 is formed, this locking element 58 no detent recess R more, whereby the locking pin 36 due to the slanted locking guide track 41 and due to the spring action by the ejection energy accumulator 13 can get into the ejection section, without having to be suppressed. For more details on this feature, see the example WO 2015/051386 A2 directed.

Finally, it is still on the Fig. 34 referenced, in which the push-through movement is shown. In this push-through movement, the locking pin 36 moves from Vorverriegelungsabschnitt 74 in the Überdrückbahn 75 of the locking guide track 41. At the same time is also the control pin 38 in the overpressure control track area 70 of the control track 40. By this function, and especially by the Überdrückbahn 75 prevents a direct crushing and thus overpressure and release on closing is prevented. Thus, it can not reach the locking pin 36 directly into the ejection portion of the locking guide track 41.

LIST OF REFERENCE NUMBERS

1,1 '

driving device

2

movable furniture part

3

ejector

3 '

further ejection device

4

retractor

5

damping device

6

housing cover

7

Housing base

8th

push element

9

coupling element

10

ejection slide

11

inner ejection housing

12

outer ejection housing

13

Discharging power storage

14

Einziehriegel

15

Einziehschlitten

16

Einziehverbindungszapfen

17

Einziehverriegelungsbahn

18

Einziehkraftspeicher

19

Einziehkraftspeicherbasis

20

damping piston

21

damping cylinder

22

Dämpfkolbenführung

23

Einziehverriegelungszapfen

24

connecting piece

25

catch fork

26

Catch fork force store

27

Catch fork pivot bearing

28

Guideway for fork and push element

29

guide pin

30

separating element

31

Synchronization coupling piece

32

Synchronization force store

33

Synchronization counterpart

34

synchronization management

35

Synchronization rod holder

36

locking pin

37

coupling pin

38

control pin

39

Spacer guideway

40

control track

41

Lock guideway

42

deflector slope

43

hemispherical stop

44

bayonet-like dome parts

45

dome train

46

Freewheel area

47

Guidance and no-load area

48

holding area

49

takeaway

50

Furniture

51

furniture body

52

pull-out

53

cabinet member

54

drawer rail

55

middle rail

56

locking device

57

Opening for synchronizing coupling piece

58

locking element

59

capture area

60

pressure lug

61

Ejection control the railway sector

62

Dome control track area

63

Displacement control track area

64

Deflection control track area

65

Spann-control track area

66

Deflection control rail sector

67

Hold control rail sector

68

Snap-control track area

69

Disengaging control track area

70

Overpressure control the railway sector

71

Projection on push element

72

holding surface

73

slant range

74

Vorverriegelungsabschnitt

75

About push rail

76

synchronizer

77

synchronization rod

78

clamping section

79

curve section

R

catch recess

EK

Entkuppelbereich

K

dome area

SS

closed position

excess sludge

About depression position

OS

open position

SR

closing direction

OR

opening direction

VS

locking position

IT

unlocking

VV

prelocked

B1

first operating mode

B2

second operating mode

L

longitudinal axis

X

axis of rotation

Claims (13)

1. A drive device for a movable furniture part (2), in particular a drawer, comprising

   - a housing (6, 7),

   - an ejection device (3) which is arranged in the housing (6, 7) for ejecting the movable furniture part (2) from a closed position (SS) into an open position (OS), wherein the ejection device (3) comprises an ejection force storage member (13) which is arranged on the housing (6, 7) and an ejection slider (10) which is force-actuated by the ejection force storage member (13),

   - a retraction device (4) which is arranged in the same housing (6, 7) for retracting the movable furniture part (2) from an open position (OS) into the closed position (SS),

   wherein the ejection device (3) and the retraction device (4) are arranged in one single housing (6, 7), wherein this housing (6, 7) comprises a housing cover (6) and a housing base plate (7), wherein the drive device (1) has a retraction operating mode (B1) and an ejection and retraction operating mode (B2), wherein in the retraction operating mode (B1) only the retracting device (4) is operative while opening and closing the movable furniture part (2) and in the ejection and retraction operating mode (B2) both the ejection device (3) and the retracting device (4) are operative while opening and closing the movable furniture part (2), characterized in that the ejection device (3) can be coupled to the retraction device (4) by means of a push element (8) and a coupling element (9), wherein an end region of the coupling element (8) comprises bajonet-like coupling parts (44), wherein in the closed position (SS) the coupling element (9) is decoupled from the push element (8), wherein in the ejection and retraction mode (B2) starting with reaching a coupling position (K) the coupling element (9) is moved by the push element (8) during an opening movement and a relative movement of the coupling element (9) to the ejection slider (10) is carried out.
2. The drive device according to claim 1, characterized in that the retraction operating mode (B1) can be activated by pulling the movable furniture part (2) located in the closed position (SS).
3. The drive device according to claim 1 or 2, characterized in that the ejection and retraction operating mode (B2) can be activated by an over-pressing movement of the movable furniture part (2) located in the closed position (SS) into an over-pressing position (ÜS).
4. The drive device according to claim 3, characterized in that the ejection device (3) can be locked by a locking device (56) in a locking position (VS) at least in the closed position (SS) of the movable furniture part (2), wherein the locking position (VS) can be unlocked by over-pressing the movable furniture part (2) into the over-pressing position (ÜS) located behind the closed position (SS).
5. The drive device according to claim 4, characterized in that in the retraction operating mode (B1) the locking device (56) remains locked in the locking position (VS) while opening the movable furniture part (2) by pulling the movable furniture part (2) and the retraction device (4) is movable independent of the ejection device (3).
6. The drive device according to one of the claims 1 to 5, characterized in that the ejection force storage member (13) is held on a separate ejection housing (11, 12) which is arranged on the housing (6, 7).
7. The drive device according to claim 4 and 6, characterized in that a locking pin (36) of the locking device (56) is arranged on the ejection slider (10) and can be moved and locked in a, preferably cardioid-shaped, locking guide track (41) of the locking device (56), the locking guide track (41) preferably being formed in an ejection housing (11, 12).
8. The drive device according to one of the claims 1 to 7, characterized in that the retraction device (4) comprises a retraction force storage member (18) which is held on the housing (6, 7), a retraction locking track (17) which is formed in the housing (6, 7) and a lockable retraction slider (15) which is force-actuated by the ejection force storage member (18) and which is movable in the retraction locking track (17), wherein the retraction slider (15) is lockable preferably by means of a retraction latch (14) in an angled end section of the retraction locking track (17).
9. The drive device according to one of the claims 1 to 8, characterized in that the retraction device (4) can be tensioned by the ejection device (3) while ejecting the movable furniture part (2).
10. The drive device according to one of the claims 1 to 9, characterized by an entrainment member (49), wherein both the ejection device (3) and the retraction device (4) can be triggered by this entrainment member (49).
11. The drive device according to claim 10, characterized in that in the retraction operating mode (B1) the retracting device (4) can be activated by this entrainment member (49) and in the ejection and retraction operating mode (B2) the ejection device (3) can be activated by this entrainment member (49).
12. An item of furniture (50) comprising a furniture carcass (51), a movable furniture part (2) and a drive device (1) according to one of the claims 1 to 11 for the movable furniture part (2).
13. The item of furniture according to claim 12, characterized in that the drive device (1) is arranged on the movable furniture part (2), preferably on a drawer rail (54) of an extension guide (52) for the movable furniture part (2).

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