EP3166444B1 - Pull-out guide for a movable furniture part - Google Patents

Description

The invention relates to a pull-out with the features of the preamble of claim 1. In addition, the invention relates to an arrangement with such a pull-out guide and a drive device for the movable furniture part. Furthermore, the invention relates to a piece of furniture with a said pull-out guide or with a said arrangement.

In the furniture fitting industry, various mechanical devices have been known for many years to move a movable furniture part, such as a drawer or a flap. Especially in drawers so-called ejection devices are known in which an unlocking of the ejection device is performed by pressing on the movable furniture part in the closed position, after which the movable is ejected in the opening direction. In the reverse manner, however, retracting devices are also known by which the movable furniture part is automatically pulled into a closed position, especially in the last closing section. Examples of different types of drive devices for movable furniture parts go z. B. from the WO 2014/008519 A1 or the WO 2010/129971 A1 out.

Now such drive devices usually have in common that somewhere a movement transfer between the movable furniture part and the furniture body must be done. Especially when such a drive device is used in a drawer, this drive device is arranged on the region of the extension guides. The drive device is usually installed in a housing, wherein a movable component of this drive device can be coupled with a driver for carrying out the opening or closing movement. This driver can z. B. be arranged on a carcass rail or on a drawer rail.

Now it is already known not to form such drivers from the outset in a fixed connection with the respective rail, but to releasably secure these drivers to the corresponding rail. For this purpose, the carrier is brought from a release position into a fixing position with the rail via a fastening movement of the driver. An example of such a locking determinable activator or driver goes out of WO 2009/047139 A1 out. This activator or driver is here coupled with a Selbsteinzugsvorrichtung or retractor and is not part of an ejection device.

From the US 2011/0115353 A1 goes out a Mitnehmteil, which is attached to the top of the rail.

A problem with such retrofit drivers often occurs especially when the pull-out is already mounted on the furniture body. For then it is difficult to achieve with the driver the intended areas for retrofitting. Often, therefore, a pull-out must be removed again, then the driver are attached accordingly and then the pull-out guide are mounted on the furniture body.

The object of the present invention is therefore to provide a comparison with the prior art improved pull-out. In particular, retrofitting the driver should be as uncomplicated, simple, easily accessible and done with little space.

This object is achieved by a pull-out with the features of claim 1. Accordingly, if the rail is formed from a bent sheet metal having a certain sheet thickness and the driver, preferably the retaining plate, is mounted in Fixierstellung on an underside of the rail, then - in order to optimize the overall space utilization of the pull in furniture - provided according to the invention that the carrier protrudes by a maximum of three times, preferably by a maximum of the simple, sheet thickness in the vertical direction from the bottom of the rail. D. h., The distance between the underside of the rail to the bottom of the furniture body can thus be very low and only three times, twice or even only the simple sheet thickness amount, which is still guaranteed at this small distance that a driver without having to remove the pull-out guide - can be retrofitted. This also for the reason that the driver never protrudes during the entire fastening movement more than three times, preferably never more than the simple, sheet thickness of the bottom of the rail. In order to guarantee a stable hold, it is preferably provided that the holding plate rests in areas on the underside of the rail. Especially for movements in height direction with already installed Pull-out guides little space is available, is guaranteed by this mounting movement in a horizontal plane uncomplicated and fast installation even with already mounted pull-out. The fastening movement thus makes it possible in general for the driver to be fastened to the rail, preferably detachably, even when the pull-out guide is preassembled on the furniture carcass.

In principle, it is possible that at least a short section of the fastening movement also has a vertical component. For example, the fastening movement may also take place partially in a space above the horizontal plane in which substantial movement sections of the fastening movement are carried out or which lies in a plane adjacent to the underside of the rail. It is preferably provided that - if the attachment movement also has an at least short vertical movement section - this vertical attachment movement component can only be performed above the horizontal plane. The attachment movement generally begins with the first contact of the driver with the rail during attachment.

However, it is particularly preferred that the fastening movement takes place only in this horizontal plane. Accordingly, from a first contact of the driver with the rail, each further relative movement between the driver and rail takes place only in this horizontal plane. The great advantage of this is that it can also be attached to the lowest pull-out guide a piece of furniture in a simple manner. The lowermost pull-out guides are usually only a few millimeters above the floor of the furniture body attached. Thus, a retrofitting of a driver is very difficult here, especially if during retrofitting larger movements in the height direction would have to be done. With this present attachment or retrofit option of a driver can now be a driver in a simple manner, even in the lowest pull-out, where there is very little space, without a complex removal of the pull-out.

In principle, the driver must be able to take only a single fixation position on the rail. This fixation position can be irreversible. For example, in the attachment movement claws extend for a fixed, insoluble Ensure connection between driver and rail. Preferably, however, it is provided that the driver is formed in combination with the rail such that the driver is releasably attachable to the rail. Thus, the driver passes through a release movement of the fixing position back into the release position.
For the type of fastening movement different variants are possible. For example, this fixing position can be achieved by a rotary movement or by a mixed form of a rotary movement and a translational relative movement between the driver and the rail. According to the invention it is also provided that the driver is movably mounted on the rail during the fastening movement. According to the invention, the driver is mounted pivotably about a vertical axis during the fastening movement on the rail. Above all, if a pivotability about the vertical axis is given, the fastening movement is guided or predetermined in a simple manner. A non-inventive embodiment provides that the fastening movement is linear. In this case, this fastening movement can be performed via at least one guide element. Particularly preferred in this second variant for easy accessibility provided that the attachment movement is transverse to the longitudinal direction of the rail. For example, this fastening movement can take place in an angle range between 45 ° and 135 ° to the longitudinal direction. Particularly preferably, the fastening movement takes place at an angle of 90 ° to the longitudinal direction of the rail.
The driver must only be designed in such a way that a coupling with the drive device for the movable furniture part is possible. Since quite large forces are often transmitted in the region of the driver, it is preferably provided that the driver has a driving pin and a retaining plate. In this case, the actual fixing of the driver on the rail via the holding plate.
The connection or fixation between the driver and the rail can be made via connectors. In general, only one connector on the driver or a connection counterpart on the rail must be present. These connectors and connection counterparts z. B. in the form of screw or even be formed by magnetic connections. Preferably, however, it is provided that between the at least one connecting piece and the at least one connection counterpart a frictional and / or positive connection in the fixing position is ingestible.

According to a preferred embodiment, at least two, preferably three, connecting pieces are provided on the driver and at least two, preferably three, connecting counterparts are provided on the rail.

In this case, it is preferably provided that a first connecting piece, preferably in the form of a rotation axis, and on the rail, a first connection counterpart corresponding to the first connecting piece, preferably in the form of a keyhole-like recess, is formed on the carrier, preferably on its holding plate. In this keyhole-like recess, the first connector in the form of a rotation axis can be retracted. Here, according to an embodiment variant, it is provided that the first connecting piece has a narrower, vertically aligned neck region and a broader head region, wherein the first connecting piece rests in the fixing position over the head region on the first connecting counterpart.

Furthermore, it is preferably provided for the fixation of the driver on the rail that on the driver, preferably on the retaining plate, a second connector, preferably in the form of an L-shaped bent tab, and on the rail a corresponding with the second connector second connection counterpart, preferably in the form of a recess formed.

For a guided fastening movement, it is provided here that the second connecting piece can be pushed into the second connecting counterpart during the fastening movement, preferably by a pivoting movement in the horizontal plane. This pivoting movement preferably takes place around the first connecting piece designed in the form of a rotation axis. For the good hold is provided that in the fixing position, the second connector with the second connection counterpart frictionally, preferably by jamming, is connected.

In addition, it is provided according to a preferred embodiment, that the driver, preferably on the retaining plate, a third connector, preferably in the form of a nub, and on the rail, a third connection counterpart corresponding to the third connecting piece, preferably in the form of a recess or punched-out, is formed. In the vicinity of this nub, a slot or a similar recess may be formed in the retaining plate of the driver, whereby a slightly resilient engagement of the nub in the third connection counterpart is possible.
As already mentioned, the driver can be retrofitted to a drawer rail or possibly also to a center rail of a pull-out. Preferably, however, it is provided that the rail with which the invention has been described, is a carcass rail.
Protection is also desired for an arrangement with a pull-out guide according to the invention and a drive device for the movable furniture part. In this case, this drive device z. B. be a retraction device. Preferably, this drive device is an ejection device, wherein the ejection device can be unlocked by overpressing a movable furniture part in an overpressure position located behind a closed position, after which the movable furniture part can be moved in the opening direction by an ejection force accumulator. If the drive device is a corresponding ejection device, it is preferably provided that the driver is a Ausstoßmitnehmer contactable with the ejection device at least during a portion of an ejection movement. Such an ejection device may be attached to the movable furniture part, to the furniture body or to a drawer rail of the pull-out guide.
Furthermore, protection is desired for a piece of furniture with a furniture body, at least one movable furniture part and at least one pull-out guide according to the invention for the movable furniture part.

Fig. 1

eine perspektivische Darstellung eines Möbels,

Fig. 2a bis 2d

unterschiedliche Darstellungen des Mitnehmers und der Schiene in der Lösestellung,

Fig. 3a bis 3d

unterschiedliche Darstellungen des Mitnehmers und der Schiene in der Vormontagestellung,

Fig. 4a bis 4d

unterschiedliche Darstellungen des Mitnehmers und der Schiene in der Fixierstellung,

Fig. 5 und 6

Schnitte durch die Schiene und den Mitnehmer beim Einschwenken in die Fixierstellung,

Fig. 7a und 7b

unterschiedliche perspektivische Ansichten des Mitnehmers,

Fig. 8 bis 10

die Befestigungsbewegung des Mitnehmers an der Schiene und

Fig. 11 bis 13

ein nicht erfindungsgemäßes Ausführungsbeispiel einer Befestigungsbewegung eines Mitnehmers an einer Schiene.

In order to guarantee an intuitive and secure fastening or fixing of the driver to the rail, it is preferably provided that in the fastening movement of the driver is first moved from the release position to a pre-assembly in which the driver contacts the rail, and the driver then from moves this pre-assembly in the fixing position, preferably pivoted, with both movements of the driver - done in the same horizontal plane - from the release position in the pre-assembly and from the pre-assembly in the fixing position.
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. 2a to 2d

different representations of the driver and the rail in the release position,

Fig. 3a to 3d

different representations of the driver and the rail in the pre-assembly,

Fig. 4a to 4d

different representations of the driver and the rail in the fixing position,

FIGS. 5 and 6

Cuts through the rail and the driver when swinging into the fixing position,

Fig. 7a and 7b

different perspective views of the driver,

Fig. 8 to 10

the attachment movement of the driver to the rail and

Fig. 11 to 13

a non-inventive embodiment of a fastening movement of a driver on a rail.

Fig. 1 shows a piece of furniture 18 with a furniture body 19 and two arranged therein movable furniture parts 2 in the form of drawers. In this case, the upper drawer is in an open position OS, while the lower drawer is in a closed position SS. By overpressing the movable furniture part 2 in an overpressure position located behind the closed position SS, an ejection device 15, not shown here, is unlocked and then the movable furniture part 2 is ejected in the opening direction OR by an ejection force accumulator. In this ejection movement, the not shown pushes Ejector 15 on a body-fixed driver 4 from. The drawers or movable furniture parts 2 are each movably mounted on pull-out guides 1 on the furniture body 19 of the furniture 18.

This is fitting in Fig. 2 a (right) side of a pull-out 1, seen from the bottom, shown. The pull-out guide 1 has, on the one hand, the rail system 21 and, on the other hand, the driver 4. The rail system 21 in turn consists of a rail 3 (carcass rail), optionally a center rail 2 and a drawer rail 17. At this drawer rail 17, a drive device 5 is mounted in the form of a retraction device 22. About this retractor 22, the movable furniture part 2 can be pulled from an open position OS in the closed position SS. This retraction movement can be damped by the damping device 23. The retraction device 22 is coupled via a driver (Einziehmitnehmer 27), which in turn is mounted on the carcass rail 3. This Einziehmitnehmer 27 may also be designed so that a fastening movement B according to the invention is possible. In this embodiment, however, it is already pre-assembled. Either directly to the drawer rail 17 or to an underside, not shown here, of the movable furniture part 2, the drive device 5 is fastened in the form of an ejection device 15. This ejector 15 can be coupled via the driver 4 with a rail 3, preferably the carcass rail, whereby the ejector 15 can repel together with the movable furniture part 2 on the body-fixed carrier 4. At least one of these drive devices 5 together with the pull-out guide 1, the arrangement 14. According to this Fig. 2a is the driver 4 still in a release position L, in which the driver 4, the rail 3 is not yet contacted.

Fig. 2b shows a section Fig. 2a , It can be seen that on the driver 4 and on its support plate 7, the first connector 8 in the form of a rotation axis, the second connector 12 in the form of an L-shaped bent tab and the third connector 24 in the form of an increase or a knob is. In addition, in addition to this third connecting piece 24 and a slot 26 in the holding plate 7 is formed. Counterparts corresponding to these connecting pieces 8, 12 and 24 are formed in the rail 3. For this purpose, in the rail 3, a first connection counterpart 9 in the form of a keyhole-like Recess formed or punched out. Furthermore, there is also a second connection counterpart 13 for the second connector 12. In addition, a third connection counterpart 25 in the form of a punched-out on the underside U of the rail 3 is formed.

The Fig. 2c shows the assembly 14 as viewed obliquely from above. The driver 4 is also here in the release position L. are recognizable in this Fig. 2c the driving pin 6 and the holding plate 7, which together form the driver 4. At this holding plate 7, the connecting pieces 8, 12 and 24 are arranged.

Fig. 2d shows a front view of the assembly 14 in the direction opposite to the opening direction OR. In this illustration according to Fig. 2d is the horizontal plane H - in which the fastening movement B takes place - easily recognizable. Again, the driver 4 is still in the release position L, in which no contact between the driver 4 and the rail 3 is given. However, it is already apparent that the second connector 12 has a slightly inclined or over-pressed tab, which in a later consequence when mounting a bias or pinching of the rail 3 between the support plate 7 and this tab is possible. It can also be seen that the first connecting piece 8 has a narrower cylindrical neck region 10 and a wider head region 11. The transition between this neck region 10 and the head region 11 is provided with a slight rounding. As a result, the driver 4 can be retrofitted with different thickness rails 3, which is guaranteed even with these different thickness rails 3 a good backlash free. The sheet thickness D of the rail 3 is also in this Fig. 2d illustrated.

The Fig. 3a to 3d correspond again from the representations of the Fig. 2a to 2d , but now the driver 4 is in a pre-assembly position M. Especially from the Fig. 3c and 3d it can be seen that the driver 4 has already performed a part of the fastening movement - which started with the contact between the driver 4 and the rail 3. This first part of the fastening movement B preferably takes place along a straight line. In this fixing movement B, the first connecting piece 8 is inserted into the first connecting counterpart 9. In this case, the neck region 10 of the first connecting piece 8 is just so narrow that it passes through the narrow region of the keyhole-like recess (see above all Fig. 2b ) passes through until the neck portion 10 laterally abuts the edge of the connecting counterpart 9 forming recess. As in Fig. 3d recognizable, is now the head portion 11 on the rail 3 and thus keeps the driver 4 already without jamming on the rail 3. Thus, the pre-assembly position M is reached.

The Fig. 4a to 4d correspond to the representation of the back Fig. 2a to 2d , but with the driver 4 is already in the fixing position F. For the attachment movement B can especially on the Fig. 4c and 4d to get expelled. This fastening movement B takes place as a pivoting movement about the axis of rotation formed by the first connecting piece 8 (vertical axis V). During this pivoting movement, on the one hand, the second connecting piece 12 comes into contact with the second connecting counterpart 13 and, on the other hand, the third connecting piece 24 comes into contact with the third connecting counterpart 25. Again, this fastening movement B takes place - as in FIG Fig. 4d easily recognizable - only in the horizontal plane H. As in Fig. 4d Also recognizable, the driver 4 is on the underside U of the rail 3 no further than the sheet thickness D in the vertical direction. This brings above all the advantage that - if the rail 3 is mounted entirely in the lowermost region of a furniture body 19 - a simple retrofitting of the driver 4 without a movement in the height direction is possible.

In this mounting movement B of the pre-assembly position M in the fixing position F, the stable fixation of the driver 4 to the rail 3 via three types. An important component in this case forms the second connector 12, which engages in the second connection counterpart 13. Due to the bias of the second connector 12 forming tab pinching the rail 3 between this tab and the support plate 7 takes place. This is already a good, frictional grip between the driver 4 and 3 rail achieved.

In addition, the slightly curved knob-which forms the third connecting piece 24-projects into the recess or punch-out in the rail 3 forming the third connection counterpart. During insertion or driving over, the holding plate 7 is slightly bent or bulged in the region of the third connecting piece 24 characterized in that in the holding plate 7, the slot 26 is formed. As a result, the area around the third connecting piece 24 during the fastening movement B slightly bent by the contact with the rail 3 and then relax on reaching the third connection counterpart 25 again, whereby a good grip is ensured.

Third, a fixation and a good hold are also achieved in that the neck portion 10 of the first connector 8 has a rectangular cross-section with rounded corners. By turning this first connector 8 in the connection counterpart 9, the connector 8, as long as it is in the position according to Fig. 4b are no longer moved out of the bottleneck of the connection counterpart 9, since the neck region 10 is wider in the region of the diagonal, as the narrowest point of the first connection counterpart. 9

In comparison between the Fig. 5 and 6 is again the attachment movement B between the pre-assembly position M and the fixing position F illustrated. In this case, engages the second connector 12 forming tab in the rail 3 through the second connection counterpart 13 through, whereby a jamming of the rail 3 between the tab and the support plate 7 takes place (see above all Fig. 6 ).

The Fig. 7a and 7b illustrate again the connecting pieces 8, 12 and 24 of the driver 4. The first connector 8 forms a vertical axis V for the pivoting movement of the driver 4. It is also recognizable that the neck portion 10 of the first connector 8 is not circular, but in the form of a Cylinder is formed with a substantially quadrangular base. The retaining plate 7 of the driver 4 is preferably formed of metal, while the driving pin 6 is formed of plastic. The first connecting piece 8 can be welded onto the holding plate 7. In contrast, the second connecting piece 12 and the third connecting piece 24 are bent out of the holding plate 7 or punched out. The same applies to the slot 26.

Fig. 8 shows again the fastening movement B along a straight line when inserting the driver 4 in the rail 3. Here, the neck portion 10 fits in this position of the driver 4 exactly through the bottleneck of the first connection counterpart 9 therethrough.

As soon as after this insertion the pre-assembly position M according to Fig. 9 is reached, the second part of the fastening movement B takes place in the horizontal plane H by a fastening movement B in the form of a pivoting movement about the vertical axis V formed by the first connecting piece 8.
At the end of this pivoting movement, the second connecting piece 12 comes into frictional connection with the second connecting counterpart 13 and also the third connecting piece 24 comes into frictional connection with the third connecting counterpart 25, whereby the fixing position F according to FIG Fig. 10 is reached. For the first exemplary embodiment, it should finally be stated that, in addition to the first connecting piece 8, only the second connecting counterpart 12 or only the third connecting piece 24 can be provided. Furthermore, it should be noted that in the first embodiment, the fastening movement B always takes place only along the horizontal plane H. However, it may well also have a part of the fastening movement B of a vertical fastening movement component, which is carried out above the horizontal plane. Thus, in the attachment movement B from the release position L to the preassembly position M, the first connection piece 8 could be hung "from above" - ie vertically - in or on the first connection counterpart 9. Thereafter, the fastening movement B of the pre-assembly position M in the fixing position F again only along the horizontal plane H.
The drawings presented so far describe a preferred embodiment of the present invention. In contrast to this preferred embodiment, however, another type of fastening movement B not according to the invention can take place in a horizontal plane H. This attachment movement B is in the Fig. 11 to 13 shown.

In this embodiment not according to the invention, connection counterparts 13 in the form of U-shaped tabs are formed on the underside U of the rail 3. These connection counterparts 13 form guide elements for the driver 4. At the holding plate 7 of the driver 4 slightly bent connecting pieces 12 are formed or punched out. By pushing or pushing the driver 4 in the fastening movement B get the easily bent Connectors 12 between the connection counterparts 13 and the bottom U of the rail 3 (see Fig. 12 ). The fastening movement B thus takes place substantially at an angle of 90 ° to the longitudinal direction of the rail 3. As a result, the fixing position F - without the need for pivoting would - achieved. In Fig. 13 and in detail A it can be seen that in each case a ribbed surface 28 is formed on the underside of the connecting counterpart 13 and on the upper side of the connecting piece 12. These ribbed surfaces 28 interlock or interlock with each other, so that a positive fit between the driver 4 and the rail 3 is guaranteed. In principle, it would also be possible here that only a single connecting piece 12 and a single connecting counterpart 13 are provided. Due to the double version, however, a better grip is given. In this embodiment according to the Fig. 11 to 13 the connection counterpart 13 is in each case integrally formed from the rail 3. Here it can also be provided that the connection counterparts 13 are preassembled as separate parts on the rail 3.

Although the invention has been described in these drawings primarily with regard to a driver 4 in the form of an ejector, which is mounted on a rail 3 in the form of a carcass rail, the same inventive concept of course also apply to other drivers 4 (eg Einziehmitnehmer 27) or for the attachment of the driver 4 to a different rail 3 as the carcass rail.

The present invention thus provides a simple way of retrofitting a driver 4 on a rail 3 without a costly disassembly.

Claims (11)

1. An extension guide (1) for a movable furniture part (2), comprising

   - at least one rail (3) which is oriented horizontally in the mounting position and

   - an entrainment member (4) for a drive device (5) for the movable furniture part (2), which entrainment member (4) can be fastened on the rail (3), in particular detachably fastened,

   wherein the entrainment member (4) is movably supported on the rail (3) and can be moved in a plane (H) which is oriented horizontally in the mounting position from a release position (L) in a fixing position (F) with the rail (3), wherein the entrainment member (4) is attached to the rail (3) in the fixing position (F), characterized in that that the rail (3) is formed from a bent sheet metal with a specific sheet metal thickness (D), wherein the entrainment member (4), preferably its holding plate (7), is attached to the underside (U) of the rail (3) in the fixing position (F) and projects for maximal three sheet metal thicknesses (D) in vertical direction from the underside (U) of the rail (3), wherein that the entrainment member (4) is supported pivotably about a vertical axis (V) on the rail (3).
2. The extension guide according to claim 1, characterized in that the entrainment member (4) comprises an entrainment bolt (6) and a holding plate (7).
3. The extension guide according to claim 1 or 2, characterized in that a first connecting part (8), preferably in the form of a pivot axis, is formed on the entrainment member (4), preferably on its holding plate (7), and a first connecting counterpart (9), preferably in the form keyhole-like recess, corresponding to the first connecting part (8) is formed on the rail (3).
4. The extension guide according to one of the claims 1 to 3, characterized in that a second connecting part (12), preferably in the form of a lug which is bent L-shaped, is formed on the entrainment member (4), preferably on its holding plate (7), and a second connecting counterpart (13), preferably in the form of a recess, corresponding to the second connecting part (12) is formed on the rail (3).
5. The extension guide according to one of the claims 1 to 4, characterized in that the holding plate (7) abuts the underside (U) of the rail (3) in a zonally planar configuration.
6. The extension guide according to one of the claims 1 to 5, characterized in that the rail (3) is a carcass rail.
7. An arrangement (14) comprising an extension guide (1) according to one of the claims 1 to 6 and a drive device (5) for the movable furniture part (2).
8. The arrangement according to claim 7, characterized in that the drive device (5) is an ejection device.
9. The arrangement according to claim 8, characterized in that the entrainment member (4) is an ejection entrainment member (16) which can be contacted with the ejection device (15) at least during a section of an ejection movement.
10. The arrangement according to claim 8 or 9, characterized in that the ejection device (15) is fastened to a drawer rail (17) of the extension guide (1).
11. An item of furniture (18) comprising an extension guide (1) according to one of the claims 1 to 6 or an arrangement (14) according to one of the claims 7 to 10.

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