EP3282895B1 - Drive devices with synchronization device for a movable furniture part - Google Patents

Description

The invention relates to an arrangement with a first drive device for moving a movable furniture part, a second drive device for moving the same movable furniture part and a synchronization device for synchronizing the two drive devices, wherein by two drive devices different positions during movement of the movable furniture part are receivable. In addition, the invention relates to a piece of furniture with such an arrangement.

In the furniture fitting industry driving devices - so-called touch-latch mechanisms - for moving or ejecting movable furniture parts (drawers, furniture doors, flaps, etc.) have been known for many years. As a result, the opening movement is automatically performed and a user only has to press on the movable furniture part to activate the ejection mechanism.

Especially in the case of wide drawers, two drive devices are often provided on opposite side areas of the drawer or of the furniture carcass in order to reliably detect a pressing on the drawer at any desired location. However, if only one of these two drive devices triggers by pressing this on the drawer, problems such as a misalignment of the drawer or a jamming or wedging can occur.

In order to solve these problems, various methods with synchronization devices for synchronizing the two drive devices are already known from the prior art. As a result, movements of the two spaced-apart drive devices are switched, in other words just synchronized. This should guarantee a similar movement on both sides.

Examples of such synchronous drive devices are the EP 2 429 339 B1 , the CN 103 479 106 A the WO 2009/114884 A1 , the EP 1 314 842 B1 and the AT 008 882 U1 , In these devices, the entire unlocking process and also a part of the ejection process are synchronized.

Another example of a synchronization shows the WO 2013/059847 A1 , in that it is all about that the lock - and not the unlocking - runs synchronously on both sides to ensure a safe and trouble-free closing. Another example of a synchronization shows the EP 3 128 871 B1 , according to which it is all about the fact that the release - and not the lock - runs synchronously on both sides.

In addition, it is still on the DE 20 2009 005 255 U1 referenced, which in contrast to the previously mentioned writings has no independent component of the ejection device as a synchronization element. Rather, here forms the drawer itself, so to speak, a synchronization element, since the force of a just unlocked detent fitting on the drawer is forwarded to the other detent fitting, causing the force of both ejection force memory unlocking the other detent fitting.

Furthermore, is from the WO 2012/159136 A1 a synchronization device for a movably mounted furniture part known. In this case, a synchronization rod has two partial waves, between which an overload device is arranged. When a predetermined holding torque is exceeded, a rotational movement between the two partial waves is released. As a result, the synchronization rod is brought from an operating position to an overload position. In this overload position no motion transmission or synchronization is possible. This is only possible again when the spring-loaded detent part, which is disengaged in the event of overload, correctly engages again in one of the partial shafts, in which case the original relative position of the two partial shafts is again given to one another.

A generic arrangement is from the unpublished, Austrian patent application AT 514,865 (Application No. A 785/2013 ). Since not all movements of the components (ejection slide, transmission elements, control levers, etc.) of the drive devices are constantly synchronized, it may happen that the two drive devices of the arrangement are in mutually different positions. This can cause the two drive devices do not perform the movements together (synchronously). Thus, no secure locking and no common ejection are possible. The drawer can not be operated as intended.

The object of the present invention is therefore to provide a comparison with the prior art improved arrangement. In particular, the reliability should be improved.

This is achieved by an arrangement having the features of claim 1. Accordingly, according to the invention a correction device is provided, with which the two drive devices are brought into the same position. In other words, it is guaranteed by the correction device that both drive devices are in the same position in the movement sequence of the drive device or return to the same position.

Various positions of the drive device according to the invention, the position in a clamping portion, the position in a locking portion, the position in a Überdrückabschnitt and the position in a discharge section. As an example, it should be noted that one of the drive devices connects in a position at the beginning of the clamping section, while the other drive device -. B. due to incorrect operation - in a position at the end of the locking portion. Now, if an active closing movement of the movable furniture part, then a false triggering of the second-mentioned drive device would take place, although the former drive device has not yet reached a position at the end of the locking portion. This is prevented by a correction device, which brings the two drive devices - for example, before the second-mentioned drive device is triggered - in the same position.

In principle, the correction device can be designed such that it detects a misalignment by means of a corresponding electronic detection device and triggers a correction movement of one of the drive devices on the basis of a corresponding signal. This can be done independently of the respective position of the movable furniture part. That is, the correction device automatically detects whether a malposition is given within the arrangement and triggers a corresponding correction movement. Preferably, however, it is provided that during the movement of the movable furniture part by the correction device, the two drive devices can be brought into the same position. Particularly preferably, the triggering of the correction device takes place by the movement of the movable furniture part.

In itself, it is arbitrary, in which same position the drive devices are brought by the correction device. It is preferably provided that the drive devices can be brought by the correction device in the locking position at the end of the locking portion.

The correction device can in principle be part of the drive devices. For example, position monitoring could be performed by a position sensor. Based on a corresponding signal, the movement of one of the drive devices is then inhibited until the second drive device reaches the same position. Preferably, however, a purely mechanical correction device is provided.

According to a particularly preferred embodiment, it is provided that the correction device is part of the synchronization device. A functionally simple embodiment provides that the synchronization device has a synchronization rod with a first rod part and a second rod part which can be rotated relative to the first rod part, wherein the two rod parts also form the correction device. About the rotation of the rod parts to each other thus the malposition of the drive devices is corrected.

In particular, this can take place in that the two rod parts to each other have a first operating position, in which a certain holding torque between the two rod parts is given and the two rod parts to each other have a second, rotated to the first operating position operating position. For a consistent functionality is particularly preferably provided that in the second operating position, the holding torque between the two rod parts is substantially equal to the holding torque in the first operating position. Thus, even with a subsequent malposition again again the correction device can be effective in the same way.

It is possible that the synchronizing device is directly connected to a part (eg, the ejecting carriage) of the respective driving device. In a preferred embodiment, however, it is provided that the synchronization device has a first coupling element for connecting the synchronization device to the first drive device and a second coupling element for connecting the synchronization device to the second drive device, wherein the coupling elements are connected in a transfer-transmitting manner via the synchronization rod. This movement is preferably carried out in that the coupling elements and the synchronization rod each have a formed on the respective coupling element rack and a the Synchronization rod mitbildendes gear - wherein rack and gear mesh with each other - are connected.

In order to detect the position of the drive device or of parts of the drive device, a preferred mechanical variant provides that the coupling elements are each limitedly movable by a preferably resilient stop. The stop can be part of a housing. The coupling elements in turn are preferably movable on this housing, in particular rotatable, mounted.

For the correction of malpositioning is then provided according to a preferred embodiment, that in stop applied to the first coupling element and simultaneous movement of the second coupling element, the rod parts of the synchronization rod prevent movement of the second coupling element to the first coupling element by rotating the rod parts to each other. Thus, the first coupling element can not move and unwanted moving further of the associated drive device in a further position is inhibited. In particular, the rotation and thus the correction by the correction device is triggered by a rotational movement between the first and second rod part occurs when the force - in the form of holding torque - between the two rod parts is smaller than the force that stops the movement of the Opposite coupling element. This is especially true when the stop is compliant, for example, as a leaf spring or as an elastic arm is formed. Particular preference is therefore provided that the two coupling elements, the stops of the coupling elements and the mutually rotatable rod parts form the correction device.

In order to ensure as constant as possible functionality of the correction device, it is preferably provided that the first rod part can be inserted into the second rod part, wherein the holding torque between the Bar parts - regardless of a depth of insertion of the first rod part in the second rod part - remains substantially the same size.

For the design of the drive devices is first to mention that they need not be identical or functionally identical. For a simple mass production but is preferably provided that the drive devices are formed substantially mirror-symmetrical.

In concrete it is preferably provided that the drive devices each have a lockable ejection device for ejecting the movable furniture part from a closed position to an open position and a locking device for locking the ejection device in a locking position, wherein by an over-pushing movement of the movable furniture part in a behind the closed position Überdrückstellung the ejection device can be unlocked from the locking position.

The preferred embodiments explained in more detail below are always to be read for both drive devices, although the concrete description is always made on the basis of the first drive device and its components. Thus, all information applies mutatis mutandis to the second drive device.

Concretely, in a preferred embodiment of the present invention, it is provided that the first ejection device comprises a housing, an ejection slide movable on the housing, an ejection force accumulator acting on the ejector carriage, and a control lever movably mounted on the ejection carriage, preferably rotatable, and the first locking device is a control lever Catching element and a locking element, on which rests the latching element in the locking position.

Furthermore, it is preferably provided that the latching element is movable in the overpressure movement from the locking position into an overpressing section and is movable by an ejection section during the opening movement of the ejection force accumulator, wherein the locking element is movable by the latching element moved in the ejection section in the opening direction. That is, when the locking element is no longer in the locking position, the locking element can move the locking element.

Basically, the locking can be done via known touch-latch mechanisms. Preferably, however, it is provided that the first drive device has a heart-shaped cam track for the latching element, with a clamping portion formed in the housing for clamping the ejection force accumulator, a locking portion, wherein the locking element mitbildet the locking portion formed in the housing overpressure portion and formed in the housing ejection section.

Furthermore, it is preferably provided that the locking element is connected to the synchronization device. A particularly simple arrangement with few components results when the locking element is formed integrally with the synchronization device or with at least part of the synchronization device. Here can also be provided that the locking element on the housing movable, preferably rotatable, is mounted.

The particular advantages of the simple design arise especially when the locking element has a locking surface on which the latching element in the locking position, and a synchronization surface on which the latching element rests in the opening direction during movement through the ejection section. The locking surface is substantially tangential to the direction of rotation of the Aligned locking element and the synchronization surface is aligned substantially radially with respect to the axis of rotation of the Verrieglungselements. That is, by applying force to the locking surface no rotation of the locking element - and thus no synchronization - can be triggered. Only by the application of force to the synchronization surface can be done the rotation and thus synchronization movement.

Preferably, the locking element is part of the coupling element. Particularly preferably, the locking element is formed integrally with the coupling element of the synchronization device.

Protection is also desired for a piece of furniture with a furniture body, a furniture part movably mounted on the furniture body, and an arrangement according to the invention.

Fig. 1

ein Möbel mit einem bewegbaren Möbelteil samt Antriebsvorrichtungen und Synchronisiervorrichtung in einer teilweise aufgebrochenen, perspektivischen Darstellung,

Fig. 2

eine Explosionsdarstellung einer Antriebsvorrichtung,

Fig. 3

eine perspektivische Ansicht der zusammengebauten Antriebsvorrichtung,

Fig. 4

Teile einer Synchronisierungsvorrichtung,

Fig. 5

eine teilweise Explosionsdarstellung der Anordnung mit zwei Antriebsvorrichtungen und der Synchronisierungsvorrichtung,

Fig. 6

die zusammengebaute Anordnung,

Fig. 7

eine alternative Variante der Synchronisierungsvorrichtung,

Fig. 8 bis 18

den Bewegungsablauf einer Anordnung in Draufsicht,

Fig. 19

eine Explosionsdarstellung einer alternativen Ausführung der Anordnung,

Fig. 20 bis 23a

den Bewegungsablauf der Anordnung gemäß Fig. 19 in Draufsicht und in perspektivischer Ansicht,

Fig. 24 bis 27

den fehlerhaften Bewegungsablauf einer Anordnung ohne Korrektureinrichtung,

Fig. 28 bis 35a

diverse Ansichten und Schnitte von Komponenten eines Ausführungsbeispiels einer erfindungsgemäßen Synchronisierungsvorrichtung und

Fig. 36 bis 40

den durch die Korrektureinrichtung korrigierten Bewegungsablauf einer Anordnung.

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 piece of furniture with a movable furniture part, including drive devices and synchronizing device in a partially broken, perspective view,

Fig. 2

an exploded view of a drive device,

Fig. 3

a perspective view of the assembled drive device,

Fig. 4

Parts of a synchronization device,

Fig. 5

a partial exploded view of the arrangement with two drive devices and the synchronization device,

Fig. 6

the assembled arrangement,

Fig. 7

an alternative variant of the synchronization device,

8 to 18

the sequence of movements of an arrangement in plan view,

Fig. 19

an exploded view of an alternative embodiment of the arrangement,

Fig. 20 to 23a

the movement of the arrangement according to Fig. 19 in plan view and in perspective view,

Fig. 24 to 27

the faulty movement sequence of an arrangement without correction device,

Fig. 28 to 35a

various views and sections of components of an embodiment of a synchronization device according to the invention and

FIGS. 36 to 40

corrected by the correction means movement sequence of an arrangement.

In the Fig. 1 to 23a an arrangement 1 is described, as they are not previously published AT 514,865 evident. From the basic construction ago identical construction is also a preferred embodiment of the present invention. Differences are given above all in the area of the synchronization device 6, which in the later following drawings Fig. 24 be explained.

Fig. 1 shows a piece of furniture 18 with a furniture body 19 and a relatively movable furniture part 3 in the form of a drawer in a partially broken, perspective view. This drawer is movably mounted on the furniture body 19 via a pull-out guide 36. On the underside of the movable furniture part 3, an arrangement 1 is attached, the two laterally on the drawer bottom 63 or on a drawer rail 64 fastened drive devices 7 and 2 (see in particular Fig. 5 ) and a synchronization device 6.

In Fig. 2 is a part of the arrangement 1, especially with the essential components of the first drive device 2 in an exploded view. About the housing 8, the first drive device 2 on movable furniture part 3 attached. On the one hand on the housing 8 and on the other hand on the ejection slide 9 designed as a tension spring ejection force memory 10 are held. The ejection slide 9 is movable along the guide track 32 in the housing 8. The housing 8, the ejection force memory 10, the ejection slide 9 and the control lever 23 together form the essential components of the first ejection device 4. Furthermore, the first ejection device but also the transmission element 20 can be assigned. This is located on the transfer stop 25 on the control lever 23 formed stop 33. The transmission element 20 can be moved along the control path 24 formed in the housing 8. This control track 24 has an angled end section 34. As soon as the catch lever 22, which is connected in an articulated manner to the transmission element 20, enters this angled end section 34, this catch lever 22 pivots, as a result of which the drive device 2 is released from the carrier 21 fixed to the furniture body. Conversely, if the catch lever 22 leaves this angled end section 34, the catch 21 is caught or held between the catch lever 22 and the transfer element 20. Furthermore, the coupling element 16 of the synchronization device 6 is rotatably mounted on the housing 8 about the axis of rotation D. Integral with this coupling element 16 and the locking element 12 is formed, which forms the locking device 5 for the first ejection device 4 together with the arranged on the control lever 23 locking element 11. In addition, the heart cam-shaped slide track 13 formed in the housing 8 is shown, which has the clamping section S, the push-through section DR, the locking section V, the overpressure section Ü and the ejection section A. The locking portion V is additionally formed by the locking element 12.

In Fig. 3 are essential parts of the assembly 1 shown in assembled condition. The ejection force memory 10 are stretched and the locking element 11 is located in the locking portion V, whereby the first ejection device 4 is in the locking position VS. Since the Driver 21 is caught by the catch lever 22, the movable furniture part 3, not shown, is in the closed position SS.

An example of components of a - not according to the invention - synchronization device 6 is in Fig. 4 shown. The racks 27 and the gear 28 are movably mounted on the base plate 26. In Fig. 5 are the individual components of the assembly 1 in not yet fully assembled state visible, since the connection via the synchronization rods 17 is not yet established. But this is in Fig. 6 shown, after which the synchronization rods 17 are each pivotally connected on the one hand with the coupling elements 16a and 16b and on the other hand with the racks 27.

One too Fig. 6 alternative embodiment of a - also not according to the invention - synchronization device 6 is in Fig. 7 shown, wherein the synchronization rods 17 are forced linearly via slot connections to each other.

To the Fig. 8 to 23a the basic sequence of movements of the drive devices 2 and 7 and the synchronization device 6 is explained below. Although the illustrated components are not formed according to the invention with the reference numerals 17, 26, 27 and 28, the functional sequence described applies mutatis mutandis to a preferred embodiment of the inventive arrangement. 1

Fig. 8 shows a plan view of the arrangement 1 with the first drive device 2, the second drive device 7 and the synchronization device 6. In the left and right apparent detail sections can be seen that in each case the locking element 11 in the locking portion V of the heart-shaped slide track 13 is located. In this case, the locking element 11 bears against the locking surface 14 of the locking element 12. This locking surface 14 is tangential to Direction of rotation of the rotation axis D aligned. Thus, since the force of the ejection force accumulator 10 acting on the detent element 11 can not cause any rotational movement of the coupling elements 16a and 16b, the ejection devices 4 each remain in their locking position VS. The movable furniture part 3 is in the closed position SS.

If now starting from Fig. 8 is pressed in the closing direction SR on one side on the left portion of the movable furniture part 3, the locking element 11 of the first drive device 2 is moved into the Überdrückabschnitt Ü, as the housing 8 moves relative to the control lever 23, the transmission element 20 and the driver 21 in the closing direction ( please refer Fig. 9 ). In this case, the latching element 11 is moved by the Abweisschräge 35 from the locking portion V in the Überdrückabschnitt Ü. This overpressure movement begins free of a movement transmission between the first drive device 2 and the synchronization device 6. The second drive device 7 thus remains unaffected by this overpressure movement on the left side. As a result, the pushing-over movement is performed only against the force of the ejection force accumulator 10 of an ejection device 4. The movable furniture part 3 is thus - at least on one side - in the overpressure position ÜS.

As soon as the movable furniture part 3 is released, the ejection force accumulator 10 of the first ejection device 4 can relax. As a result, the housing 8 together with the movable furniture part 3 attached thereto is ejected relative to the driver 21 in the opening direction OR (see FIG Fig. 10 ), whereby the locking element 11 also enters the ejection section A of the heart-shaped cam track 13. The first ejection device 4 thus actually abuts the furniture body 19, in particular the driver 21. Up to this point, no movement has been transmitted to the synchronization device 6. The locking element 11 is but according Fig. 10 already at the synchronization surface 15 of the locking element 12. This synchronization surface 15 is aligned radially with respect to the axes of rotation D of the coupling elements 16a and 16b.

By this alignment of the synchronization surface 15 finally takes place - when the ejection force memory 10, the locking element 11 further through the ejection section A in the opening direction in the position according to Fig. 11 moved by the synchronization of the locking member 12 of the second drive device 7 is pivoted, whereby the locking element 11 is no longer locked to the locking surface 14. Thus, this locking element 11 passes directly from the locking portion V in the ejection section A. It may also relax the ejection force memory 10 of the second ejection device 4 and the movable furniture part 3 is ejected from both ejectors 4 synchronously in an open position OS.

After further rotation of the two coupling elements 16a and 16b in the position according to Fig. 12 The locking element 11 and the locking element 12 are no longer abutting each other. The ejection force storage 10 of both ejection devices 4 can relax further. Compared to Fig. 10 is also clearly visible that the coupling elements 16a and 16b have rotated about the axis of rotation D by about 50 °. This rotational movement is limited on the one hand by abutment of the locking element 12 on the housing 8 and on the other hand by striking the slightly elastic spring element 30 also on the housing 8. Generally this rotation range can be between 30 ° and 90 ° degrees, depending on the design. The relatively wide rotational movement has the advantage that especially the total game of the synchronization device 6 has little effect on the synchronization.

Finally, according to Fig. 13 both ejection force memory 10 fully relaxed and the ejection process is complete.

By the momentum or active pulling on the movable furniture part 3, the drive device 2 and 7 then move into the position according to FIG Fig. 14 , there Contact the control lever 23 and the transmission element 20 is no longer. However, the catch lever 22 is located in the angled end portion 34 of the control track 24, whereby the driver 21 is released. The movable furniture part 3 is thus freely movable.

The closing operation of the movable furniture part 3 is from Fig. 15 shown. Here the driver 21 is trapped again and via the transmission element 20, the control lever 23 and with this the locking element 11 is moved in the clamping section S, whereby the ejection force memory 10 are manually clamped when closing.

During this closing and clamping movement, both latching elements 11 also move in accordance with FIG Fig. 16 in abutment with the reset levers 29 of the coupling elements 16a and 16b. As a result, the coupling elements 16a and 16b are each rotated about the axis of rotation D, so that also according to Fig. 17 the locking elements 12 move closer and closer towards the locking portion V.

In Fig. 18 Finally, the coupling elements 16a and 16b are back in their initial position, so that the locking surfaces 14 of the locking elements 12 again serve to lock the locking elements 11. The slightly elastic elements 30 of the coupling elements 16a and 16b ensure the correct positioning (zero position) of the locking elements 12, so that the locking elements 12 along the detent recess or the locking portion V. It is again reached the locking position VS of the two ejection devices 4 in tensioned ejection force memory 10. The movable furniture part 3 is again in the closed position SS. In order to ensure that the coupling elements 16a and 16b remain in their position - after the locking element 11, the reset lever 29 is no longer touching and before the locking element 11 on the locking element 11 again - remain be formed in the housing 8 small locking lugs, with the Coupling elements 16a and 16b, preferably with their locking elements 12, cooperate.

In Fig. 19 an alternative embodiment of the synchronization device 6 is shown in an exploded view. Accordingly, the rack 27 is formed directly on the coupling element 16. On the housing 8, a holder 31 is fixed, on which the synchronization rod 17 is rotatably mounted with trained at the end of gear 28. The gear 28 meshes with the rack 27, so that a rotational movement of the coupling element 16 in a rotational movement of the synchronization rod 17 - and vice versa - is transmitted. The remaining components of the arrangement 1 according to Fig. 19 are identical to the first embodiment.

In the Fig. 20 to 23a are closed Fig. 19 fitting the most important positions of the movement of the drive devices 2 and 7 and the synchronization device 6 shown. The rotational movement of the synchronization rod 17 is best in Fig. 23a clarified.

With the Fig. 24 to 27 a problem is explained in detail, which has sometimes resulted in previous arrangements 1 with two drive devices 2 and 7 and a synchronization device 6.

By incorrect operation or by the installation of mutually different positions located drive devices 2 and 7 it could happen that - as in Fig. 24 exemplified - the first drive device 2 occupies a position at the beginning of the clamping portion S, while the second drive device 7 assumes a position at the end of the locking portion V. In other words, the two drive device 2 and 7 are in different positions. Best seen are the respective positions on the position of the respective locking element 11 in the heart-shaped cam track 13. Concretely, there is the locking element 11 of the first drive device 2 at the end of the Ejection section A, which simultaneously forms the beginning of the clamping section S (see detail bottom left). The locking element 11 of the second drive device 7 is located at the end of the locking portion V (see detail at the bottom right), thus in the locking recess of the heart-shaped cam track 13th

If now starting from this malposition in the closing direction SR is pressed onto the still open movable furniture part 3, the transmission element 20 and with this the control lever 23 together with the locking element 11 is moved relative to the housing 8 in the drive device 2 due to the fixed driver 21. As a result, the position is according to Fig. 25 reached. The locking element 11 has already covered a part of the clamping section S. The locking element 11 and its control lever 23 is thereby already on the first coupling element 16a (see especially the detail below bottom left). The locking element 11 of the second drive device 7 is still in the detent recess of the locking portion V (see especially the detail below right).

As soon as the first coupling device 16a of the first drive device 2 begins to rotate due to the moving control lever 23 in a further movement in the closing direction SR, the synchronization device 6 transmits motion to the second coupling element 16b of the second drive device 7, which thereby rotates clockwise , This also causes a movement of the integrally formed with the second coupling element 16b locking element 12, whereby the locking recess opens and the locking position VS is released. As a result, the ejection force accumulator 10 of the second drive device 7 can relax, thereby moving the ejection slide 9 through the ejection section A. Thus, the second drive device 7 is located as in FIG Fig. 26 shown - in a position at the end of the ejection section A while the first drive device 2 is in a position at the beginning of the locking portion V.

In Fig. 27 Finally, the locking element 11 of the first drive device 2 has reached the end of the locking portion V.

This undesired false synchronization is eliminated by the present invention, this being based on the preferred embodiment according to the FIGS. 28 to 40 will be explained in more detail below.

In Fig. 28 Components of the synchronization device 6 are illustrated. In particular, the first rod part 17a inserted in the third, profile-shaped or extruded rod part 17c can be seen.

How out Fig. 29 These two rod parts 17a and 17c together with the second rod part 17b form the synchronization rod 17. At the other end of the third rod part 17c, two further rod parts 17a and 17b of identical construction are provided. Together with the coupling elements 16a and 16b, the synchronization rod 17 forms the synchronization device 6 Fig. 29a the toothed rod 27 formed on the first coupling element 16a and the toothed wheel 28 formed on the second rod part 17b can be seen.

In the assembled state according to the Figs. 30 and 30a the rack 27 and the gear 28 mesh. The first rod portion 17a is inserted with its front portion into the second rod portion 17b.

In Fig. 31 the synchronization device 6 is attached to the first drive device 2. The drawn section ii is in Fig. 31a seen. Fig. 31b shows a detail Fig. 31a , In this section, it can be seen that the first rod part 17a fits snugly and thus is firmly seated or plugged in the third rod part 17c. In the same way, the first rod part 17a is also in the second Rod part 18b inserted. The frictional engagement is achieved via the contact surface 37. At the same time, however, a free space 39 also remains in sections between the first rod part 17a and the second rod part 17b. Out Fig. 31b is also partially the case 8 of the first drive device 2 can be seen, which is mounted on the mounting plate 38 on a movable furniture part 3, not shown. On the housing 8, in turn, the first coupling element 16a is rotatably mounted, which meshes via the rack 27 with the gear 28 of the second rod portion 17b. The holder 31 is attached to the housing 8 and forms a pivot bearing for the synchronization rod 17th

In Fig. 32 the section ii-ii is shown, which in Fig. 32a is shown. Fig. 32b shows a detail Fig. 32a , It can be seen that the front portion of the first rod portion 17a is formed in cross section quadrangular with rounded corners. The second rod part 17b has three bulges 42 in cross-section. As a result, the first rod part 17a is not fully in contact with the second rod part 17b. Rather, in addition to the contact surfaces 37 and the free spaces 39. The dash-dotted line section corresponds essentially to the section II, which in Fig. 31b is shown and also illustrates the contact surface 37 and the space 39. In this Fig. 32b the rod parts 17a and 17b to each other on a first operating position B1. In this first operating position B1, a certain holding torque H between the rod parts 17a and 17b due to the friction in the region of the contact surfaces 37 is given.

In Fig. 33 the section iii-iii is shown, which in Fig. 33a is shown. Fig. 33b shows a detail Fig. 33a in which the first rod part 17a and the second rod part 17b form the correction device 50 in that the first rod part 17a is rotatable relative to the second rod part 17b. Concrete has become in Fig. 33b the first rod part 17a to the second rod part 17b opposite Fig. 32b twisted (illustrated by the differently oriented hatching). That is, the first rod part has the holding torque H in the region of Contact surfaces 37 overcome and relative to the second rod portion 17b (in this case rotated by about 90 °) in the second operating position B2. In this second operating position B2, the holding torque H in the area of the contact surfaces 37 is again the same as in the first operating position B1.

Also from a comparison between the Figs. 32c and 33c go the different operating positions B1 and B2 of the synchronization device 6 out. In particular, the marked markings M illustrate the relative rotational movement between the first rod part 17a and the second rod part 17b. The extent of rotation is arbitrary, as long as a malposition is compensated thereby and in the second operating position B2 again a roughly equal holding torque H is given.

With reference to the Fig. 34 and 35 It should first be pointed out that 16 mm and 19 mm are the most common board thicknesses for wood and chipboard for furniture making in the furniture industry. To be able to equip furniture with these different plate thicknesses with structurally identical arrangements 1, a length adjustment of the synchronization rod 17 is usually carried out. However, in order to be able to ensure the same functionality of the correction device 50 even with these different long synchronization rods 17, it is preferably provided that the holding torque H be between the two Bar parts 17a and 17b - regardless of a depth of insertion of the first rod portion 17a in the second rod portion 17b - remains substantially the same size. This is fitting in the Figs. 34 and 34a a lower insertion depth (suitable for a plate thickness of 16 mm). In this case, the front portion of the first rod portion 17a is disposed in the region of the tabs 40 in which the second rod portion 17b is less rigid than in the area of the recesses 42. Thus, the total contact area 37 between the rod portions 17a and 17b is relatively large but is given a relatively low rigidity of the tabs 40. Thus, the elasticity and the size of the contact surfaces 37 cooperatively provide the holding torque H.

In contrast, in the Figs. 35 and 35a the first rod part 17a is inserted deeper into the second rod part 17b (suitable for a plate thickness of 19 mm). The size of the contact surfaces 37 is lower in this case due to the recesses 42. Due to the higher rigidity of the second rod part 17b in the region close to the gearwheel, however, the same holding torque H results overall as in the case of a smaller insertion depth. A constant holding torque H can be ensured at different insertion depths and with constant rigidity of the components involved alone by the same size of the contact surfaces 37. This is in a comparison between the Figs. 34b and 35b illustrated.

With reference to the FIGS. 36 to 40 the sequence of movements and / or the mode of operation of an arrangement 1 with a correction device 50 according to the invention will be explained below.

In Fig. 36 is the same initial position of the arrangement 1 as in Fig. 24 is given, except that in this case in the reverse manner, the second drive device 7 is in a position at the beginning of the clamping portion S, while the first drive device 2 is in a position at the end of the locking portion V.

If, starting from this position in the closing direction SR, the opened furniture part 3 is pressed, the control lever 23 together with the latching element 11 moves along the clamping section 5 in the case of the second drive device 7 via the driver 21 and the transmission element 20 in contact with the second coupling element 16b, as shown in FIG Fig. 37 on the bottom right is best seen. Already in this Fig. 37 It can be seen that both drive devices 2 and 7 each have an elastic arm 44.

In detail goes out to it Fig. 37a show that the games of the individual components are adjusted to each other so that when in the locked position befindlichem locking element 12 between the coupling elements 16a and 16b and the stop 43 formed by the elastic arm 44 remains a small gap. Due to its rigidity (spring hardness), the elastic arm 44 opposes a specific force K via the stop 43 of a corresponding movement of the respective coupling element 16a or 16b.

As soon as starting from Fig. 37 the movable furniture part 3 is moved further in the closing direction SR, the second coupling element 16b of the second drive device 7 begins to rotate in the clockwise direction (see FIG Fig. 38 ). This movement is transmitted via the rack 27 and the gear 28 to the synchronization rod 17. As a result, the first coupling element 16a moves counterclockwise via the left-side gearwheel 28 and the corresponding toothed rod 28 until this first coupling element 16a bears against the stop 43. Upon continued movement of the second coupling element 16b, the correction device 50 is actuated by rotational movement between the first rod part 17a and the second rod part 17b, since the force - in terms of the holding torque H - between the two rod parts 17a and 17b is less than the force K, the stop 43 (or the elasticity of the elastic arm 44) opposes a movement of the first coupling element 16a. In other words, the first coupling element 16a is prevented from further movement in a counterclockwise direction by the stop 43. As a result, the left-side rack 27 no longer moves and the gear 28 of the left-side second rod portion 17b can not turn either. However, since the left-side first rod part 17a continues to receive angular momentum from the second coupling element 16b, the holding torque H between the two rod parts 17a and 17b is overcome and the rod parts 17a and 17b rotate relative to each other from the first operating position B1 to the second operating position B2. The second drive device 7 has in Fig. 38 already reaches the beginning of the locking portion V, from where on the contact between the control lever 23 and the second coupling element 16b stops again. In Fig. 38 is illustrated that the stop 43, the first Coupling element 16a, the first rod portion 17a and the second rod portion 17b (with the forces acting therebetween K and H) form the correction device 50. In the same way, the identical components on the other side also form a correction device 50.

In Fig. 39 Finally, both drive devices 2 and 7 again reached the same position in which the respective locking element 11 is located at the end of the locking portion V.

Fig. 40 shows still a subsequent synchronized Entriegel- or overpressing movement, whereby in this case both locking elements 11 reach the overpressure section Ü of the heart-shaped cam track 13.

Finally, it should be mentioned that the stop 43 can also be made unyielding. For example, the stop 43 may be formed by a solid surface of the housing 8. However, the compliance of the stop 43 brings an advantage in case of incorrect operation. Namely, when the drive device 2 or 7 is stopped shortly after unlocking and at the beginning of the ejection section A, the locking element 11 can get back from the "wrong" side in the detent recess by the coupling element 16 coming from the ejection section A and the locking element adjacent latching element 11 is rotated against the force K of the elastic arm 44.

It should also not be excluded that the elastic arm 44 is attached to the coupling element 16 and abuts a - then fixed and preferably formed by the housing 8 - stop 43. It is also important here that the force K between stop 43 and coupling element 16 is greater than the holding torque H.

The invention is described in this description above all with regard to a rotating synchronization rod 17. In an analogous way and However, it is also quite conceivable that a correction device 50 is also used in synchronization devices 6, as in the (non-inventive) embodiments according to the Fig. 1 to 23a are described and illustrated. It is also possible that the correction device 50 is integrated in the region of the drive device 2 and 7 instead of in the region of the synchronization device 6.

LIST OF REFERENCE NUMBERS

1

arrangement

2

first drive device

3

movable furniture part

4

first ejection device

5

first locking device

6

synchronizer

7

second drive device

8th

casing

9

ejection slide

10

Discharging power storage

11

locking element

12

locking element

13

heart-curved slide track

14

locking surface

15

synchronization area

16

coupling element

16a

first coupling element

16b

second coupling element

17

synchronization rod

17a

first rod part

17b

second rod part

17c

third, profile-shaped rod part

18

Furniture

19

furniture body

20

transmission element

21

takeaway

22

catch lever

23

control lever

24

control track

25

transmission stop

26

baseplate

27

rack

28

gear

29

Reset lever

30

elastic elements

31

holder

32

guideway

33

attack

34

angled end section

35

deflector slope

36

pull-out

37

contact area

38

mounting plate

39

free space

40

tabs

41

recesses

42

bulges

43

attack

44

elastic arm

50

corrector

63

drawer base

64

drawer rail

SS

closed position

OS

open position

VS

locking position

excess sludge

About depression position

OR

opening direction

Ü

About pressing portion

A

discharge portion

V

locking section

DR

By pressing portion

S

clamping section

D

axis of rotation

M

mark

B1

first operating position

B2

second operating position

H

holding torque

K

force

Claims (14)

1. An arrangement (1) comprising a first drive device (2) for moving a moveable furniture part (3), a second drive device (7) for moving the same moveable furniture part (3) and a synchronizing device (6) for synchronizing the two drive devices (2, 7), wherein the two drive devices (2, 7) can be in different positions during the movement of the moveable furniture part (3), the different positions of the drive devices (2, 7) comprise a position in a tensioning section (S), a position in a locking section (V), a position in an over-pressing section (Ü) and a position in an ejecting section (A), characterized by a correction device (50), by which the two drive devices (2, 7) can be brought into the same position.
2. The arrangement according to claim 1, characterized in that the two drive devices (2, 7) can be brought into the same position by the correction device (50) during the movement of the moveable furniture part (3).
3. The arrangement according to claim 1 or 2, characterized in that the correction device (50) is part of the synchronizing device (6).
4. The arrangement according to one of the claims 1 to 3, characterized in that the synchronizing device (6) comprises a synchronizing rod (17) with a first rod member (17a) and a second rod member (17b) which is rotatable to the first rod member (17a), wherein the two rod members (17a, 17b) also form parts of the correction device (50).
5. The arrangement according to claim 4, characterized in that the two rod members (17a, 17b) have a first operating position (B1) to each other, in which a predetermined holding torque (H) is given between the two rod members (17a, 17b).
6. The arrangement according to claim 5, characterized in that the two rod members (17a, 17b) have a second operating position (B2) to each other, which second operating position (B2) is rotated in comparison to the first operating position (B1), wherein in the second operating position (B2) the holding torque (H) between the two rod members (17a, 17b) is substantially as large as the holding torque (H) in the first operating position (B1).
7. The arrangement according to one of the claims 1 to 6, characterized in that the synchronizing device (6) comprises a first coupling element (16a) for connecting the synchronizing device (6) with the first drive device (2) and a second coupling element (16b) for connecting the synchronizing device with the second drive device (7), wherein the coupling elements (16a, 16b) are motion-transmitting connected by means of the synchronizing rod (17).
8. The arrangement according to claim 7, characterized in that the coupling elements (16a, 16b) and the synchronizing rod (17) each are motion-transmitting interconnected by a gear rack (27) formed on each coupling element (16a, 16b) and by a gearwheel (28) being part of the synchronizing rod (17).
9. The arrangement according to claim 7 or 8, characterized in that the coupling elements (16a, 16b) each can be moved to a limited extent by a, preferably yielding, limit-stop (43).
10. The arrangement according to claim 9, characterized in that in the case of the first coupling element (16a) abutting the limit-stop (43) and simultaneous movement of the second coupling element (16b), the rod members (17a, 17b) of the synchronizing rod (17) prevent a movement transmission from the second coupling elements (16b) to the first coupling element (16a) by way of a rotation of the rod members (17a, 17b) to teach other.
11. The arrangement according to claim 9 or 10, characterized in that the limit-stop (43) is formed yieldingly, preferably on an elastic arm (44), wherein a rotary movement between the first rod member (17a) and the second rod member (17b) is carried out when the force - in form of a holding torque (H) - between the two rod members (17a, 17b) is smaller than the force (K) which the limit-stop (43) opposes to a movement of the respective couplings element (16a, 16b).
12. The arrangement according to one of the claims 9 to 11, characterized in that the two coupling elements (16a, 16b), the limit-stops (43) for the coupling elements (16a, 16b) and the rod members (17a, 17b) being rotatable to each other are forming the correction device (50).
13. The arrangement according to one of the claims 1 to 12, characterized in that the drive devices (2, 7) each comprise a lockable ejection device (4) for ejecting the moveable furniture part (3) from a closed position (SS) into an open position (OS) and a locking device (5) for locking the ejection device (4) in a locking position (VS), wherein the ejection device (4) can be unlocked from the locking position (VS) by an over-pressing movement of the moveable furniture part (3) into an over-pressing position (ÜS) situated behind the closed position (SS).
14. An item of furniture (18) comprising a furniture carcass (19), a moveable furniture part (3) being moveable on the furniture carcass (19) and an arrangement (1) according to one of the claims 1 to 13.

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