JP2017511189A - Drive unit for movable furniture parts - Google Patents

Abstract

The present invention relates to a drive device (1) for a movable furniture part (2), which drive device (1) pushes the movable furniture part (2) from a closed position (SS) to an open position (OS). Device (3) is included. Each ejection device (3) includes a spring loaded locking element (4) for locking the ejection device (3) in the locked (VS) position, the ejection device (3) being Further comprising a guide track (5) comprising a corner end section (6), the locking element (4) can be locked to its corner end section (6) in the locked position (VS) The device (3) further comprises a release element (7) provided separately from the lock element (4), which is released when the movable furniture part (2) is over-pressed. The element (7) can be moved by release from its cornered end section (6) to the over-pressed position (US) that is behind the closed position (SS). The invention further includes a synchronizer (8) that synchronizes the release elements (7) of the two drive devices (3). [Selection] Figure 9

Description

  The present invention relates to a drive device for a movable furniture portion, and the drive device includes two ejection devices for ejecting the movable furniture portion from a closed position to an open position, and these ejection devices are movable furniture. Arranged on both sides of the part, each ejection device being a guide track comprising a spring loaded locking element for locking the ejection device in the locked position and a cornered end section, A guide track that can be locked to its angular end section in the latched position and a release element provided separately from the lock element, when the movable furniture part is over-pressed, the lock element is A release element capable of moving from the cornered end section to an over-pressed position existing behind the closed position. The invention further relates to furniture having such a drive.

  Such a drive device is disclosed in DE 102010061482A1. This mainly relates to the opening and closing operation of the movable furniture part, and the locking action of the ejector is performed in the cornered end section of the guide path. This known opening and closing device and drive device are disadvantageous, especially when used for wide drawers, and tilting and unlocking on one side may occur due to one side activation or over-pushing of the drawer. This can lead to an undesirable malfunction of the drawer in the furniture housing.

DE102010061482A1 EP1314842B1 WO2009 / 114884A2 EP2429339B1 WO2013 / 059847A1 DE202009005255U1 A785 / 2013

  Therefore, one of the objects of the present invention is to prevent these problems. Thus, the present invention also relates to a synchronization device.

  In general, various synchronization devices are already known from the prior art. A first example of a synchronized ejection device is disclosed in EP 1314842B1, according to which the disengagement levers are connected to each other synchronously and there is no play. Notch extensions (forming the locking elements) are arranged on these disengagement levers. These notch extensions are locked in a latch that forms a kind of guide path for the notch extension. The unlocking of the notch extension from the latch occurs due to the relative movement of these two members when over-pressed. There is no release element separate from the latch or notch extension.

  Another lockable ejector device with a synchronization unit is disclosed in WO2009 / 114884A2. Here, the extension formed on the receiving element is movable and lockable in a heart-shaped curved slide guide track. Furthermore, in this embodiment, unlocking is performed by the relative movement of these two components (members) when over-pressed, where the drive output storage means is relaxed and the movable furniture part is ejected in the opening direction.

  Furthermore, according to EP 2429339B1, locking is performed via a heart-shaped curved slide guide track, and a latch element supported on the movable slider engages the heart-shaped curved slide guide track. Furthermore, the unlocking is carried out here by the relative movement of the latch element to the heart-shaped curved slide guide track. Synchronization is performed by a connecting operation of a linearly movable slider.

  Another type of locking of this kind is disclosed in WO2013 / 059847A1.

  On the other hand, DE202009005255U1 discloses synchronization in which no specific mechanical synchronizer exists. Rather, the synchronization is performed by force transmission to the other side through the drawer, and the unlocked locking element is released by the double acting force of the driving force storing means in the pulling direction. Therefore, the unlocking is performed again by the operation of the switching element with respect to the switching curve portion.

  Another synchronization method is disclosed in pre-published Austrian patent application A785 / 2013. Here, when the ejection of the other ejection device has already started, if a part of the guide track of the unreleased ejection device is moved through the synchronization device, synchronization is performed only after the over-pressing operation. The latch peg locked in the latch recess can be pulled out of this latch recess in the heart-shaped curved guide track. Thus, again, unlocking is effected by relative movement between the heart-shaped curved slide guide track and the latch peg.

  If the person skilled in the art has the purpose of using the known synchronizers of the known DE 102010061482A1, he skilled in the art can, for example, operate the locking element, the operation of the ejector or the guide of the two ejectors. Teaching could be derived from this prior art to synchronize the movement of the track members.

  In the case of the drive device according to DE 102010061482 A1, the object of preventing the tilting of the drawer according to the invention is achieved in that the release elements of the two ejector devices can be synchronized by a synchronizer. In this way, in particular, there is no release element separate from the locking element and the guide track in all these prior art synchronizers, thus providing the possibility of synchronization which is not obvious from the combination of the aforementioned documents. .

  Further preferred embodiments are described in the dependent claims.

  For example, it is preferable that each ejection device includes a housing. Each guide track is formed in a housing for easy assembly. For easier ejection operation, each guide track has a ejection section (ejection part) in addition to a cornered end section (cornered end part).

  Basically, the release element can move linearly. Particularly preferably, however, the release elements are each supported by the housing in a movable, preferably pivotable manner.

  The synchronization of the release element can be performed, for example, via a rotatable synchronization rod that engages a toothed rod formed on the release element via a sprocket formed at the end of the rotatable synchronization rod. Preferably, however, two bearing positions (bearing arrangement, support arrangement) are formed in the respective release element, and the synchronization rod of the synchronizer is rotatably supported at these bearing positions. Particularly preferably, these synchronization rods are arranged in a crossover manner so that the rotational movement of one release element is converted into the reverse rotational movement of the other release element.

  In order to easily guide the locking elements, the locking elements are each slidably supported in the guide track via two peg-shaped extensions.

  In principle, the drive device consists only of two ejection devices and a synchronization device. However, in a further variant, a retraction device is preferably additionally provided for retracting the movable furniture part from the open position to the closed position, preferably in a damping configuration.

  Furthermore, patent protection is claimed for furniture with a furniture housing, a movable furniture part and a drive according to the invention. In such furniture, the drive can work with the furniture housing. That is, the two driving devices are attached to both sides of the movable furniture portion, for example, directly to the furniture housing or to the housing rail of the extension guide. Preferably, however, the drive device is arranged on the lower side of the movable furniture part, and each ejection device can be connected in part via an ejection member and an engagement member fixed to the furniture housing. This means that the drive device moves away from (engages from) the engaging member fixed to the furniture housing. In these embodiments, the retracting device can be integrated into the extension guide.

  Further details and advantages of the present invention are explained in more detail below by means of a detailed description in connection with the embodiments shown in the drawings.

FIG. 1a shows furniture with a movable furniture part and a drive. FIG. 1b shows a movable furniture part with a drive. FIG. 2 is an exploded view of the drive device. FIG. 3 is a three-dimensional view (perspective view) of the assembled drive device. 4 to 14 show a plan view of a continuous function of the operation of the drive device.

  FIG. 1a shows furniture with a furniture housing 16 and two movable furniture parts 2 constructed as drawers. Each of these drawers includes a drawer box 22 and a front panel 21. The movable furniture portion 2 is movably supported by the furniture housing 16 via an extension guide. These extension guides include at least one housing rail 19 and one drawer rail 20. The driving device 1 is arranged at the bottom of the movable furniture part 2. The drive device 1 includes two ejection devices 3 disposed on both sides of the movable furniture portion 2 and a synchronization device 8. An engaging member 18 is disposed on the housing rail 19.

  FIG. 1 b shows the bottom of the movable furniture part 2 with the drive 1 attached at least partially to the movable furniture part 2. The drive device 1 also includes a retracting device 14 for retracting the movable furniture portion 2 from the open position OS to the closed position SS, and the retracting device 14 is arranged in the extension guide or in the extension guide. In this embodiment, the retracting device 14 is attached to the drawer rail 20 and can be coupled to an engaging member 18 disposed on the housing rail 19. Furthermore, the attachment of the engagement member 18 on the housing rail 19 via the holding plate 37 is also shown.

  In FIG. 2, the drive device 1 is shown in a partially exploded view. As is apparent from FIG. 2, the two ejection devices 3 are formed in mirror symmetry. Basically, however, there may of course be some differences between the two ejection devices 3. However, for easy manufacture, these ejection devices 3 are formed in the same shape or in exact mirror symmetry. Each ejection device 3 includes a housing that can be attached to the movable furniture portion 2. A guide track 5 having an ejection section 10 and a corner end section 6 is formed in the housing 9. Further, a guide track 30 for the extension 29 formed in the lock element 4 and a guide track 25 for the ejection slider 17 are formed in the housing 9. The ejection slider 17 can move linearly along the guide track 25. The ejection slider 17 includes a connection extension 23, and the ejection device 3 can be connected to the engagement member 18 fixed to the furniture housing via the connection extension 23. A detent (detent stop) 27 is supported by each ejection slider 17 via a compression spring 28 so as to be movable. The locking element 4 is movably supported in the guide track 5 via two extending portions 13. The other extension 29 of the locking element 4 engages in the guide track 30. The drive output storing means 24 formed as a tension spring is held on one side by the extension 29 of the lock element 4 and on the other side by a spring base 33 formed on the housing 9. The release element 7 is formed separately from the guide track 5 and the lock element 4. The release element 7 is also movable relative to the guide track 5 and the lock element 4. The release element 7 is rotatably supported in a recess 35 formed in the housing 9 via a rotation bearing (rotation support portion) 31. Furthermore, a bearing position 11 is formed on each release element 7 where the bearing position 11 and the extension 32 of the synchronizing rod 12 engage. The synchronization device 9 is constructed by these synchronization rods 12 with an extension 32 that cooperates with the bearing position 11 of the release element 7. The buffer element 26 acts to smoothly decelerate or buffer the ejection operation of the lock element 4.

  In FIG. 3, the drive device 1 is shown in the assembled state in the case of a relaxed force storage means 24. As can be seen here, the two synchronization rods 12 are arranged in crossed states at different heights.

  The plan view of the drive device 1 according to FIG. 4 corresponds to the three-dimensional view according to FIG. When this drive device 1 is arranged below the movable furniture part 2, according to FIG. 4 it is still in contact with the schematically illustrated engagement member 18 fixed to the furniture housing. Not. Therefore, the movable furniture portion 2 is located at the open position OS.

  When the movable furniture portion 2 is manually moved from the position shown in FIG. 4 in the closing direction SR, the connecting extension portions 23 of the two ejection sliders 17 come into contact with the engaging members 18 respectively. Since these engaging members 18 do not move, the ejection slider 17 is moved with respect to the housing 9. Further, since the locking element 4 also abuts against the detent 27 formed on the ejection slider 17 via the nose (projecting part) 34, the locking element 4 is also moved along the guide track 5 with respect to the housing 9. Since the force storage means 24 is held by the extension 29 of the locking element 4, the force storage means 24 is pulled in this operation in the closing direction SR.

  In FIG. 6, this pulling process continues further. The movable furniture part 2 is still in the open position OS.

  According to FIG. 7, the movement of the movable furniture part 2 in the closing direction SR continues further, and the locking element 4 reaches the cornered end section 6 of the guide track. When reaching the cornered end section 6, the two locking elements 4 each come into contact with the release element 7, so that these release elements 7 rotate correspondingly around the rotary bearing 31. These rotational movements of the release element 7 are synchronized by the synchronizer 8.

  In FIG. 8, the locking element 4 has reached the end of the angled end section 6 of the guide track 5. As a result, the locking element 4 is held in the guide track 5 by the inclination and friction of the extending portion 13. Therefore, the force storage means 24 cannot relax. In this position of the locking element 4, the two ejection devices 3 are each in the locking position VS. According to FIG. 8, the two ejection sliders 17 have already been further moved in the closing direction SR by the retracting device 14 (not shown) until reaching the closed position SS of the movable furniture part 2. In the closed position SS, the detents 27 are in contact with the extending portions 36 of the release element 7 respectively.

  When the movable furniture portion 2 starts from the closed position SS shown in FIG. 8 and is over-pressed in the closing direction SR, the movable furniture portion 2 reaches the over-pressed position US as shown in FIG. In the over-pressed position US, the ejection slider 17 is further moved with respect to the housing 9 in cooperation with the engagement member 18 fixed to the furniture housing. As a result, the release element 7 moves the extension portion 36. And is rotated by the detent 27 around the rotary bearing 31. Here, in the case of this over-pressing operation, when the movable furniture part 2 is pressed only on one side, the release element 7 is moved or rotated by the detent 27 only on this side. However, the operation of the release element 7 is nevertheless performed on the opposite side each time, i.e. also by a synchronous operation via the two synchronization rods 12. With the rotational movement of the two release elements activated by the over-pressing action, both locking elements 4 are moved or released almost simultaneously and thus synchronously from the angular end section 6. Thus, the locking position VS is not set, the locking element 4 is no longer held in the cornered end section 6 and the two force storage means 24 can begin to relax.

  By this ejection process shown in FIG. 10, the locking element 4 is moved along the ejection section 10 of the guide track 5. Further, the ejection slider 17 is carried through the nose 34, and as a result, the ejection device 3 moves itself away from the engaging member 18 fixed to the casing. Therefore, the movable furniture portion 2 is moved in the opening direction OR, and the movable furniture portion 2 reaches the open position OS again. Also, the retractor 14 (not shown) can be loaded simultaneously during this ejection process.

  In FIG. 11, this ejection process has already progressed, but has not yet been completed.

  In FIG. 12, the ejection process is complete and the force storage means 24 is relaxed. At the end of the ejection operation, the locking element 4 contacts the buffer element 26. The ejection slider 17 is further moved along the guide track 25 by inertia or manual advancement so that the detent 27 reaches and contacts the nose 34 of the locking element 4.

  Thereafter, the detent 27 is moved relative to the ejection slider 17 against the force of the compression spring 28 (see FIG. 13).

  In FIG. 14, the operation of the ejection slider 17 has also been completed, and the detent 27 has moved beyond the nose 34. The ejection device 3 is no longer in contact with the engaging member 18 fixed to the housing via the connecting extension portion 23, and the movable furniture portion 2 exists in the open position OS, where the movable furniture portion is located. 2 can be moved freely by hand. The starting position according to FIG. 4 is reached again.

Claims (11)

A drive device (1) for the movable furniture part (2),
Two ejector devices (3) for ejecting the movable furniture part (2) from the closed position (SS) to the open position (OS) are provided, and the ejector device (3) includes the movable furniture part (2). ) On both sides, and each ejector (3)
A spring loaded locking element (4) for locking the ejector (3) in a locking position (VS);
Guide track (5) with a cornered end section (6), which can lock the locking element (4) to the cornered end section (6) in the locked position (VS). (5) and
A release element (7) separate from the lock element (4), wherein when the movable furniture portion (2) is over-pressed, the lock element (4) is moved by the release element (7). A release element (7) capable of being released from the angular end section (6) to an over-pressing position (US) existing behind a closed position (SS),
The drive device (1) further includes a synchronization device (8) that can synchronize the release elements (7) of the two ejection devices (3).
Drive device.   The drive device according to claim 1, wherein each of the ejection devices (3) comprises a housing (9).   3. Drive device according to claim 2, wherein the guide tracks (5) are each formed in the housing (9).   4. Drive device according to any one of claims 1 to 3, wherein each guide track (5) comprises an ejection section (10).   5. The drive device according to claim 2, wherein each of the release elements (7) is supported by the housing (9) so as to be movable, preferably pivotable. 6.   Two bearing positions (11) are formed in each release element (7), and the synchronizing rod (12) of the synchronizer (8) is rotatably supported at these bearing positions (11). The drive device according to any one of claims 1 to 5.   7. The locking element (4) according to any one of claims 1 to 6, wherein each locking element (4) is slidably supported in the guide track (5) via two peg-shaped extensions (13). The drive device described.   8. A retracting device (14) for retracting the movable furniture part (2) from the open position (OS) to the closed position (SS), preferably in a damping manner. The drive device according to item.   A furniture (15) comprising a furniture housing (16), a movable furniture part (2) and a drive device (1) according to any one of claims 1 to 8.   Furniture according to claim 9, wherein the drive (1) is arranged below the movable furniture part (2).   The furniture according to claim 9 or 10, wherein each ejection device (3) can be connected to an engagement member fixed to the furniture housing (16) via a ejection slider (17).

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