EP3434144B1 - Slide rail - Google Patents

Description

The present invention relates to a pull-out guide for a furniture part that can be pulled out of a furniture body and pushed back into it, in particular a drawer, the pull-out guide having at least one body rail for attachment to the furniture body and at least one drawer rail for attachment to the furniture part and at least one center rail, the center rail is mounted longitudinally displaceably on the carcass rail and the drawer rail is mounted longitudinally displaceably on the central rail, and wherein the pull-out guide has at least one damper for damping an insertion movement of the furniture part.

Pull-out guides of the type mentioned are known in the prior art in a large number of configurations. They are used to move furniture parts such as To store drawers, inserts and pull-outs in a furniture body in such a way that they can be pulled out of the furniture body and pushed back into it. When the furniture parts are pushed in or pulled out, the rails of the pull-out guide are pushed into one another or pulled apart.

An example of a pull-out guide of the type mentioned is in EP 2 129 260 B1 shown. The pull-out guide shown in this document has a pull-in device for pulling the drawer rail into the furniture body. Furthermore, the pull-in device has a damper which dampens the retraction movement of the pull-out guide or of the furniture part in the last section of the push-in path. The damper ensures a gentle braking of the furniture part at the end of the insertion path, whereby force peaks when reaching the fully inserted position of the pull-out guide are avoided or at least greatly reduced.

When using pull-out guides, which are provided in particular for drawers for holding heavy objects or heavy loads, in a load case in which the furniture part is only little or not loaded, the case may arise that the middle rail when the furniture part is pushed in strikes against an end stop of the carcass rail and springs back from this against the direction of insertion before the furniture part is fully inserted into the furniture carcass. The recoil of the middle rail that occurs can be acoustically perceptible to the user and can impair the smooth running of the pull-out guide, since the pushing-in movement is influenced by the jerky snap back of the middle rail.

A pull-out guide of the type mentioned is also in the EP 1 561 398 A1 disclosed, wherein a floating damper is arranged on the body rail. The housing of the damper has a catch which interacts with a front edge of a control element of the drawer rail in such a way that the damper is moved into an initial position when the drawer rail is pulled out. The engagement or disengagement of the control element on the driver detent impairs the smoothness of the pull-out guide and / or is audible.

The object of the invention is to provide an improved pull-out guide of the type mentioned at the beginning, in which smooth running of the pull-out guide is ensured.

According to the invention, this is achieved through a pull-out guide with the features of claim 1.

In the case of a pull-out guide according to the invention, it is thus provided that the at least one damper is floatingly mounted on the center rail. In the context of this document, floating mounting is understood to mean mounting of the damper on the central rail, in which the damper as a whole is mounted movably relative to the central rail. That is, the entire damper is related on the central rail as a whole at least one degree of freedom. In the context of the invention, the at least one degree of freedom can be a degree of translational freedom and / or a degree of rotational freedom. In particular, it is conceivable and possible for the damper as a whole to have more than one degree of freedom in relation to the center rail, for example one degree of translational freedom and one degree of rotational freedom.

The at least one damper advantageously transmits during a damping process, at least in relation to one direction of insertion Pull-out guide, essentially no or only low forces on the center rail.

The pull-out guide according to the invention thus enables the transmission of longitudinal forces from the drawer rail via the damper, which is floatingly mounted on the center rail, to the body rail. This can improve the running smoothness of the pull-out guide, in particular when the furniture part is lightly loaded. The floating mounting of the damper on the middle rail enables in particular an automatic averaging of the position of the damper in relation to the drawer rail and the body rail.

In a preferred embodiment according to the invention it is provided that the damper comprises a first damper part and a second damper part, the first damper part and the second damper part being movable relative to one another to develop a damping effect during a damping process, and the first damper part and the second damper part jointly movable relative to the central rail, in particular longitudinally displaceable, are mounted on the central rail. In other words, the first and second damper parts can advantageously be moved relative to one another and both damper parts can be moved together, in particular longitudinally, relative to the central rail.

It can be provided that the damper as a whole, i.e. the first damper part and the second damper part, are jointly longitudinally displaceable in and opposite to the direction of insertion relative to the central rail. The central rail is advantageously designed to be longitudinally extending parallel to the direction of insertion, the damper then being mounted as a whole on the central rail so as to be longitudinally displaceable parallel to the longitudinal extension of the central rail.

The pull-out guide according to the invention could also be referred to as a full extension. A pull-out guide designed as a full extension enables the furniture part to be pulled out completely from the furniture body.

The carcass rail can initially be a separate component from the furniture carcass, which is then fastened in the furniture carcass using means known from the prior art. The body rail can just as well be integrated into a furniture body or a part of it. This also falls under the concept of fastening the body rail to the furniture body. The same applies to the shop rail. This can also be a rail that is initially designed separately and is then attached to the furniture part. The drawer rail can also already be inserted into the furniture part, e.g. the drawer, be integrated and thus attached to this.

It is expediently provided that a first stop is arranged on the body rail and a second stop is arranged on the drawer rail, a first counter-stop of the first damper part being able to be brought into contact with the first stop and a second counter-stop of the second damper part being able to be brought into contact with the second stop. It is preferably provided that during the damping process of the pull-out guide, in which the pushing-in movement of the furniture part is damped, the first counter-stop touches the first stop and the second counter-stop touches the second stop.

The term "stop" or "counter stop" is to be understood broadly in this document. For example, the stop or the counter-stop can each have at least one surface which can be brought into contact with one another. The impact of the stop on the counter stop then blocks a further relative movement in one direction of movement. In other embodiments, the stop can be a flank or a plurality of flanks of a toothed rack, with a component having a toothing being able to be brought into contact with the toothed rack. At least one tooth flank of the toothing then forms the counter-stop in the sense of this document. In the event of a further relative movement of the toothing with respect to the toothed rack having the stop, the toothing can roll off on the toothed rack. In this sense, a rolling of the toothing on the rack, in which different flanks of the rack with different tooth flanks of the toothing in Engagement are referred to as striking the stop on the counter-stop.

It could be provided that the first stop is molded onto the body rail and / or that the second stop is molded onto the drawer rail. In other words, the first stop and the body rail could be formed in one piece. Equally, the second stop and the drawer rail could also be formed in one piece. In other embodiments, it is also possible that the respective stop is otherwise fastened to the body rail or the drawer rail, for example in a materially bonded manner by means of welding, gluing, etc. or by means of connecting elements, such as e.g. Screws, rivets or the like.

It can be provided that the damper is designed as a linear damper and one or the first damper part and one or the second damper part can be moved relative to one another in an axial direction in order to develop the damping effect. For example, the linear damper could be a fluid damper, the first damper part forming a piston and the second damper part forming a cylinder of the damper. The structure of the damper could also be reversed, for example, the second damper part forming the piston and the first damper part forming the cylinder of the damper designed as a fluid damper. In the case of a damper designed as a fluid damper, a fluid flows through a throughflow opening arranged in the piston and / or between the piston and the cylinder, the relative movement between the piston and the cylinder being damped. Such dampers are known per se in the prior art. The axial direction, in which the first damper part and the second damper part can be moved relative to one another, expediently extends parallel to the direction of insertion of the rails.

In a preferred embodiment it can be provided that the pull-out guide has a sliding sleeve arranged on the central rail for the longitudinally displaceable mounting of the damper. For example, a damper part designed as a cylinder could be mounted longitudinally displaceably in the sliding sleeve be. The damper is advantageously parallel to a longitudinal extension of the sliding sleeve, longitudinally displaceable relative to the sliding sleeve. The sliding sleeve preferably engages around the cylinder, at least in some areas, in a plane viewed orthogonally to the direction of insertion. The sliding sleeve is preferably fixed to the center rail. The sliding sleeve is favorably stationary with respect to the central rail. As an alternative to a sliding sleeve, the damper could be mounted on the center rail so as to be longitudinally displaceable, for example by means of a linear guide, in particular a linear sliding guide such as a tongue and groove guide. Other profile rails for the longitudinally displaceable mounting of the damper on the center rail could also be used. In a further alternative, for example, a roller guide could be used for the longitudinally displaceable mounting of the damper on the center rail.

The floating mounting of the damper is favorably limited. This means that the displacement path of the floating damper relative to the center rail is then limited to a predetermined amount. For example, locking devices could be arranged on the sliding sleeve and / or on the damper, which limit the displacement path of the damper relative to the central rail, preferably in and against the direction of insertion. This can prevent the damper from falling out of the linear sliding guide, for example the aforementioned sliding sleeve. The loss safeguards could be formed, for example, by stops arranged on the sliding sleeve and / or on the damper.

In a possible embodiment variant, the damper could be designed as a rotary damper and one or the first damper part and one or the second damper part could be rotatable relative to one another in order to develop the damping effect. Dampers designed as rotary dampers are also known in the prior art.

The first damper part or the second damper part, in particular in the case of such rotary dampers, preferably has a toothing which is connected to a rack arranged on the drawer rail or on the body rail Can be brought into engagement. At least one of the tooth flanks of the toothing, preferably several tooth flanks of the toothing, then advantageously forms or form one of the counterstops. At least one flank of the rack, preferably several flanks of the rack, form one of the stops. The toothing of the damper part can be brought into engagement with the toothed rack to develop the damping effect.

It can be provided that the pull-out guide has a pull-in device, preferably arranged on the carcass rail, for pulling the drawer rail into the furniture carcass. Various embodiments of pull-in devices are known in the prior art. For example, the pull-in device could have a pull-in spring for executing a pull-in movement of a tilt slide of the pull-in device. A driver is advantageously arranged on the drawer rail or on the center rail, which driver interacts with the tilt slide to carry out the retraction movement. The pull-in device is preferably fastened to the body rail and / or carried by the body rail. In other embodiments, the pull-in device could also be arranged on another rail, for example the drawer rail of the pull-out guide, and interact with a driver arranged on the carcass rail to perform the pull-in movement. In principle, the driver could then also be arranged on the center rail, for example if the pull-out guide has a device for forced coupling of the movement of the center rail and the drawer rail.

In a possible embodiment of the pull-out guide, it can be provided that it has a device for the forced coupling of the movement of the center rail and the drawer rail when the piece of furniture is pushed in and pulled out. A pull-out guide designed in this way could, as is known per se in the prior art, also be referred to as a differential pull-out guide. In a differential pull-out guide, the movement of the center rail and the drawer rail is controlled by a synchronization device known per se synchronized, ie forcibly coupled. For example, at least one rotatably mounted load-transmitting differential roller could be arranged on the middle rail, whereby a synchronous run or differential run of the rails is achieved. With a differential pull-out slide, the middle rail only covers half the distance of the drawer rail in relation to the cabinet rail. Various modified versions of such differential pull-out guides are also already known. For example, it is also possible to provide a positive positive coupling. For this purpose, for example, a gear could be provided on the middle rail, which engages in toothed racks arranged on the body rail and the drawer rail.

In other embodiments, a device for the forced coupling of the movement of the center rail and the drawer rail could be dispensed with. Such an embodiment of a pull-out guide could, as is known per se in the prior art, also be referred to as a telescopic pull-out guide.

• Fig. 1 bis 12 Darstellungen zu einem ersten erfindungsgemäßen Ausführungsbeispiel in Form einer Differentialausziehführung;
• Fig. 13 bis 24 D Darstellungen zu einem zweiten erfindungsgemäßen Ausführungsbeispiel in Form einer Teleskopausziehführung, und
• Fig. 25A bis 25E Darstellungen zu einem dritten erfindungsgemäßen Ausführungsbeispiel.

Further features and details of preferred embodiments of the invention are explained by way of example using the description of the figures. Show it:

• Figs. 1 to 12 Representations of a first embodiment according to the invention in the form of a differential pull-out guide;
• Figures 13 to 24D Representations of a second embodiment according to the invention in the form of a telescopic extension guide, and
• Figures 25A to 25E Representations of a third exemplary embodiment according to the invention.

In Fig.1 the first exemplary embodiment of a pull-out slide according to the invention is shown in a state in which the drawer rail 4 of the pull-out slide 1 together with the center rail 3 is completely pushed into the body rail 2 in the push-in direction 22. Fig. 2 shows the detail A of Fig. 1 . In Fig. 3 the drawer rail 4 and the center rail 3 are completely pulled out of the body rail 2 counter to the direction of insertion 22. Fig. 4 shows that Detail B of Fig. 3 . The Figures 5 to 8 show isometric views of the pull-out guide 1 from a different perspective, with the body rail being shown in sections in sections. The Figures 6 and 8 show the details C and D of the Figures 5 and 7 . In the Figures 9A through 9F different relative positions of the body rail 2, the middle rail 3 and the drawer rail 4 are shown. The Figures 10 and 11 show a view analogous to Fig. 1 , wherein the body rail 2 and the central rail 3 are shown in sections in section. Fig. 11 shows the detail of the Fig. 10 . In Fig. 12 a view of the pull-out guide with a viewing direction in the insertion direction 22 is shown.

For the sake of completeness, it is pointed out that neither the furniture body nor the furniture part that can be pushed into and pulled out of it by means of the pull-out guide 1 are shown in the figures. The arrangement and fastening of the pull-out guide 1 with its rails, i. the body rail 2, the center rail 3 and the drawer rail 4, between the furniture body and furniture part, can be designed as known per se. Usually there is a pull-out guide 1 on opposite sides of the furniture part. In the figures drawn here, only one of these two pull-out guides 1 is shown, which together store a furniture part in the furniture body.

In the first exemplary embodiment according to the invention, the pull-out guide 1 is designed as a differential pull-out guide, in particular as a differential roller pull-out guide. The body rail 2, the central rail 3 and the drawer rail 4 are guided in one another such that they can be moved by means of rollers 13. The drawer rail 4 is longitudinally displaceable on or in the central rail 3 and the central rail 3 is mounted, together with the drawer rail 4, longitudinally displaceably in the body rail 2. The furniture part is pushed in in the push-in direction 22, and the furniture part is pulled out of the furniture body in the direction opposite to the push-in direction 22.

In the Fig. 7 partially visible and partially hidden synchronization roller 23 provides, together with the roller 13 arranged above, for the synchronization, ie the forced coupling, of the relative movement between the drawer rail 4 and the central rail 3, as is known per se and does not need to be explained further. For the sake of completeness, it is pointed out that pull-out guides 1 according to the invention do not necessarily have to be role-based, of course. Instead of the rollers 13, ball bearings or simple plain bearings can also be used, just to name a few examples. The synchronization of drawer rail 4 and central rail 3 can also be designed differently, for example with a gear wheel arranged on the central rail, which meshes with toothed racks arranged on the drawer rail and on the body rail.

The pull-out guide 1 according to the first exemplary embodiment has a pull-in device 10 for pulling the drawer rail 4 into the furniture body. The pull-in device 10 is arranged on the carcass rail 2. In the prior art, a wide variety of variants of retraction devices 10 are known, which in principle could also be used in a pull-out guide 1 according to the invention. Ultimately, the pull-in device 10 ensures that the furniture part is completely pulled into the furniture body.

The drawing-in device 10 shown in the figures has a tilt slide 15 which cooperates with a driver 18 arranged on the central rail 3. The driver 18 is not shown separately. In the exemplary embodiment, the tilt slide 15 is spring-loaded, the spring 14 of the pull-in device 10 causing the center rail 3 and the drawer rail 4, which is positively coupled to the center rail 3, to be drawn in. Such retraction devices 10 are known per se. At this point, however, it should be noted that, in a possible embodiment variant, a pull-in device 10 could be dispensed with.

The pull-out guide 1 also has a damper 5 for damping the insertion movement of the furniture part. For this purpose, the damper 5 is floatingly mounted on the center rail 3 according to the invention. In the exemplary embodiment is it is provided that the entire damper 5 can be moved relative to the central rail, in particular it can be moved longitudinally. In particular, the damper 5 as a whole can be displaced longitudinally in and against the push-in direction 22 relative to the central rail 3. The damper 5 as a whole thus has a degree of translational freedom in and against the direction of insertion 22 with respect to the center rail 3.

In the exemplary embodiment, the damper 5 is designed as a linear damper, in particular as a fluid damper. The damper 5 has a first damper part 6 which comprises a piston of the fluid damper, not shown separately. The first damper part 6 further comprises a piston rod adjoining the piston, as shown in FIG Fig. 7 can be seen. Furthermore, the damper 5, which is designed as a fluid damper, comprises a second damper part 7, which is designed as a cylinder. The first damper part 6 and the second damper part 7 can be moved relative to one another in an axial direction in order to develop a damping effect during a damping process. In the exemplary embodiment, the axial direction in which the first damper part 6 and the second damper part 7 can be moved relative to one another is aligned parallel to the push-in direction 22.

As already described at the outset, the principle of a fluid damper is known per se in the prior art. The fluid damper can, for example, be an oil or silicone damper. In principle, it would also be conceivable and possible for the damper 5 to be designed as a gas pressure damper. In the unloaded state, the damper 5 in the exemplary embodiment has an extended rest position, wherein the moving apart of the damper parts 6, 7 could be brought about, for example, by a return spring integrated in the fluid damper.

In the exemplary embodiment it is provided that the first damper part 6 and the second damper part 7 of the damper 5 can jointly be longitudinally displaceable relative to the central rail 3. For this purpose, the pull-out guide 1 has a sliding sleeve 16 fastened to the center rail 3 for the floating mounting of the damper 5. In the exemplary embodiment, the second damper part 7, ie the cylinder of the Fluid damper, mounted in the sliding sleeve 16 longitudinally displaceable. The sliding sleeve 16 encompasses the second damper part 7, ie the cylinder, preferably completely in relation to a direction orthogonal to the insertion direction 22. Other embodiments of the floating mounting of the damper on the middle rail are also conceivable in principle, for example the second damper part could have a sliding piece which is displaceable in a groove made on the middle rail. For example, a slider arranged on the damper part could have a dovetail-shaped cross-section which engages in a corresponding groove cross-section of a groove made on the center rail. Other embodiments of linear sliding guides for the longitudinally displaceable mounting of the damper 5 on the center rail 3 are also possible in principle, as has already been explained.

The sliding sleeve 16 of the exemplary embodiment has a mounting plate 17 for fastening the sliding sleeve 16 to the center rail 3. The sliding sleeve 16 is stationary in relation to the center rail 3. To fasten the mounting plate 17 to the center rail 3, the sliding sleeve 16 has mounting bumps 19 protruding from the mounting plate 17, cf. Fig. 11 . In Fig. 11 the center rail 3 is shown omitted in the area of the mounting plate 17 so that the mounting bumps 19 are more clearly visible. Fig. 3 shows a view with the center rail 3, the mounting bumps 19 being received in corresponding, unspecified receiving holes of the center rail 3. The sliding sleeve 16 could be fastened to the center rail 3 by means of screws, for example. A local melting of the mounting bumps 19 for the form-fitting molding on the center rail 3 is basically conceivable and possible. Such connection techniques are well known.

A first stop 8 is arranged on the body rail 2 and a second stop 9 is arranged on the drawer rail 4. In the first embodiment it is provided that the first stop 8 is molded onto the body rail 2, cf. Fig. 11 . The stop 8 is produced here from the base material, for example a sheet steel, of the body rail 2 by means of punching and bending. The second In the first exemplary embodiment, stop 9 is fastened to drawer rail 4, for example by means of fastening elements, for example screws or rivets. In another embodiment variant, however, it would also be conceivable and possible to design the second stop 9 in one piece with the drawer rail 4 or, for example, to attach it to the drawer rail 4 in a materially bonded manner by gluing, welding or soldering.

The first damper part 6 has a first counterstop 11 which can be brought into contact with the first stop 8. A second counterstop 12, which can be brought into contact with the second stop 9, is arranged on the second damper part 7. The first counterstop 11 is fastened to the piston rod of the first damper part 6 in the exemplary embodiment. The first counter-stop 11 could for example be pressed onto the piston rod. Other embodiments are also conceivable, for example an adhesive connection, a snap connection or the like. In the exemplary embodiment, the second counterstop 12 is formed by an outer surface of the damper part 7, as shown, for example, in FIG Fig. 8 can be seen.

During the damping process of the pull-out guide 1, in which the insertion movement of the furniture part is damped, the first counter-stop 11 touches the first stop 8 and the second counter-stop 12 touches the second stop 9. This state is for example in Figure 9A shown.

Figure 9A shows the pull-out guide 1 in the fully inserted position. Apart from any remaining residual stroke of the damper 5, the damper 5 is completely compressed, ie the first damper part 6 and the second damper part 7 are, at least essentially, completely pushed into one another.

In Figure 9B an extended state of the damper 5 is shown, ie the first damper part 6 and the second damper part 7 are shown in the fully extended position of the damper 5. The first counterattack In this illustrated operating state of the pull-out guide 1, 11 touches the stop 8 and the second counter-stop 12 touches the second stop 9.

During an insertion process in the insertion direction 22 starting from Figure 9B in the direction Figure 9A the damper 5 develops a damping effect in which, when the furniture part is pushed into the furniture body in the pushing-in direction 22, the pushing-in movement of the furniture part is damped.

Figure 9C FIG. 9 shows an operating state in which the drawer rail 4 or the furniture part is pulled further out of the furniture body than in FIG Figure 9B . The stops 8, 9 are spaced from the counter stops 11, 12. Due to the floating mounting, the damper 5 as a whole can then be displaced longitudinally relative to the central rail 3 in and against the pushing-in direction 22.

In the Figures 9D through 9F the floating mounting of the damper 5 is shown as an example. In all of these figures, the relative position of the body rail 2 to the central rail 3 and of the central rail 3 to the drawer rail 4 is identical. In Figure 9D the damper 5 is shown in a centered position, ie the distance between the first counter-stop 11 and the first stop 8 and the distance between the second counter-stop 12 and the second stop 9 are identical. In Figure 9E the damper 5 is displaced in the insertion direction 22 relative to the center rail 3, ie the distance between the first stop 8 and the first counter-stop 11 is smaller than the distance between the second stop 9 and the second counter-stop 12. Figure 9F shows the opposite situation, in which the damper 5 is correspondingly shifted against the direction of insertion 22 and the distance between the first stop 8 and the first counter-stop 11 is greater than the distance between the second stop 9 and the second counter-stop 12.

The floating mounting of the damper 5 on the center rail 3 has the effect that, when it is pushed in, a direct flow of force can be transmitted from the drawer rail 4 via the damper 5 to the body rail 2. This can cause the Middle rail 3 can be avoided during rapid insertion due to the damping effect of the damper 5. In other words, the damper 5 automatically averages out between the first stop 8 and the second stop 9. As a result, the pull-out guide 1 can run smoothly.

In order to prevent the damper 5 from falling out of the sliding sleeve 16 in relation to directions parallel to and against the insertion direction 22, locking devices could be provided which limit the displacement path of the floating damper 5 relative to the sliding sleeve 16 in and against the insertion direction 22. For example, stops could be arranged on the sliding sleeve 16 and / or on the damper 5, which form the anti-loss devices.

In the Figures 13 through 22, 23A-D and 24A-D a second embodiment of a pull-out guide 1 according to the invention is shown. The structural design of the pull-out guide 1 has numerous similarities with that of the first exemplary embodiment, so that in the explanations relating to the second exemplary embodiment mainly the differences from the first exemplary embodiment are pointed out. Apart from the differences listed below, the explanations relating to the first exemplary embodiment also apply to the second exemplary embodiment.

In the second exemplary embodiment, the pull-out guide 1 is designed as a telescopic pull-out guide. Rollers 13 are rotatably mounted on the body rail 2, on the center rail 3 and on the drawer rail 4. When pulling out the furniture part, the drawer rail 4 and the center rail 3 are pulled out of the body rail 2 one after the other. In contrast to the differential design, in this pull-out guide 1 no forced guidance or synchronization of the rails is provided.

Also the extension guide 1 of the second, designed as a telescopic extension guide Exemplary embodiment has a pull-in device 10, which is arranged on the carcass rail 2, for pulling the drawer rail 4 into the furniture carcass, cf. Figs. 13 to 16 . In Fig. 13 the telescopic retraction guide is shown in the fully retracted state. Fig. 15 shows the detail F of Fig. 13 . The driver 18 arranged on the drawer rail 4 interacts with the tilt slide 15.

In the Fig. 16 the detail G is according to Fig. 14 shown. In this situation, the pull-out guide 1 is fully extended. The tilt slide 15 is in a locking position in which the spring, not shown, of the retraction device 10 is pretensioned. When the drawer rail 4 is pushed into the furniture body, the driver 18 hits the tilt slide 15 moves in with the driver 18 and the drawer rail 4 in the insertion direction 22. In the Figures 15 and 16 the unspecified guide groove of the retraction device 10 can also be seen in which the tilt slide 15 is positively guided.

In the second exemplary embodiment, the carcass rail 2 has a mounting bracket 24 for fastening the pull-in device 10 to the carcass rail 2. The first stop 8 is integrally formed on the mounting bracket 24 of the body rail 2, cf. Fig. 16 . In the Figures 17 and 18 are to the Figures 13 and 14 analog representations shown, with a different perspective was chosen. The structure of the mounting plate 24 just described and the arrangement of the first stop 8 on the body rail 2 can also be seen from these figures.

Furthermore, the sliding sleeve 16 of the second exemplary embodiment is fastened to the center rail 3 by means of a mounting bracket 25. The design of the sliding sleeve 16 is identical to that of the first exemplary embodiment, with the mounting bumps 19 from FIGS Figures 19 and 20 showing the details H and I. Figures 17 and 18 show, emerge. The attachment of the sliding sleeve 16 to the Mounting bracket 25, which in turn is fastened to the center rail 3, can be designed analogously to the first exemplary embodiment.

A second stop 9 is also arranged on the drawer rail 4 in the second exemplary embodiment. This can in turn be molded onto the drawer rail 4. However, it is also conceivable and possible for the stop 9 to be attached to the drawer rail 4 in a different manner, as has already been explained.

The damper 5 of the second embodiment is identical to the first embodiment, ie the first damper part 6 is designed as a piston of a fluid damper and the second damper part 7 as a cylinder of a fluid damper. Furthermore, the damper 5 has a first counter-stop 11 which is identical to the first exemplary embodiment and which is arranged on the piston. The second counterstop 12 is formed by an outer surface of the second damper part 7. During the damping process of the pull-out guide 1, in which the insertion movement of the furniture part is damped, the first counter-stop 11 touches the first stop 8 and the second counter-stop 12 touches the second stop 9, as shown in FIG Fig. 22 is clearly visible.

In the Figures 23A to 23D an extraction process of the pull-out guide 1 is shown. In Figure 23A the fully inserted state of the pull-out guide 1 is shown, the first stop 8 and the first counter-stop 11, as well as the second stop 9 and the second counter-stop 12 touching one another. Fig. 23B FIG. 13 shows a state in which the drawer rail 4 is pulled out a little from the center rail 3. In this state shown, the driver 18 still interacts with the tilt slide 15. The stops 8, 9 and the counterstops 11, 12 are still in contact, the damper 5 automatically assuming a position between stops 8, 9. In Figure 23C the driver 18 has already been pushed out of the tilt slide 15. The tilt slide 15 is secured in the locked position. The first stop 8 touches the second counter-stop 11, while the second stop 9 and the second counter-stop 12 are already spaced from one another. In Figure 23D the drawer rail 4 is even further pulled out. The center rail 3 and the body rail 2 are still in the identical starting position as they are in Figure 23A is shown. The stop 8 and the counter-stop 11 are still in contact with one another. Only when the drawer rail 4 is pulled out further does the central rail 3 move along, the first stop 8 and the first counter-stop 11 then being lifted from one another, as shown, for example, in FIG Figure 24A is shown.

In the Figures 24A to 24D is the insertion of the pull-out guide 1 starting from the in Figure 24A shown, in which the stops 8, 9 are spaced apart from the counter-stops 11, 12. In the in Figure 24B In the state shown, the drawer rail 4 has already been pushed completely into the center rail 3, the stop 9 resting against the counter-stop 12. The first stop 8 is spaced apart from the second counter-stop 11.

In Figure 24C the situation is shown in which the driver 18 is just touching the tilt slide 15, with a pull-in by means of the pull-in device 10 being triggered when the furniture part is pushed in further. The first stop 8 touches the first counter-stop 11 and the second stop 9 touches the second counter-stop 12. In this situation, the damper 5 develops a damping effect, ie the pushing-in movement of the furniture part is damped by the damper 5. Figure 24D again shows the fully inserted or retracted state of the pull-out guide 1 and corresponds to the figure Figure 23A .

In the Figures 25A to 25E shows a third embodiment of a pull-out guide 1 according to the invention. The structural design of the pull-out guide 1 is only shown schematically, ie the rollers and the pull-in device have been omitted. Otherwise, the structure of the pull-out guide 1 corresponds to the structure of the second exemplary embodiment. In the explanations of the third exemplary embodiment, reference is mainly made to the differences from the second exemplary embodiment. Apart from the differences listed below, the explanations relating to the second exemplary embodiment also apply to the third exemplary embodiment.

In the third exemplary embodiment it is provided that the damper 5 is designed as a rotary damper and a first damper part 6 and a second damper part 7 can be rotated relative to one another in order to develop the damping effect. As already explained, rotary dampers are known per se in the prior art.

The damper 5, designed as a rotary damper, is also floatingly mounted on the center rail 3. For this purpose, the first damper part 6, which forms the housing of the rotary damper, is mounted in a floating manner in a guide groove 21 in the center rail 3. The second damper part 7 of the damper 5 has teeth, cf. e.g. Figure 25A , and could also be called a rotor. The first damper part 6, designed as a housing, is longitudinally displaceable in the guide groove 21 relative to the central rail 3. The displacement path of the damper 5 relative to the center rail 3 is limited by boundary surfaces which are not designated in more detail and which limit the guide groove in and against the direction of insertion 22. The abovementioned boundary surfaces form stops or the anti-loss devices in order to prevent the damper 5 from falling out.

The damper 5 is mounted on the center rail 3 in such a way that the damper is prevented from falling out. For example, the first damper part 6 engaging in the guide groove 21 could have an undercut in order to prevent the damper 5 from falling out. This is not shown separately in the schematic representations.

A toothed rack 20 is arranged on the drawer rail 4, which meshes with the toothing of the second damper part 7 during the damping process of the pull-out guide 1, in which the insertion movement of the furniture part is damped. The gearwheel flanks of the toothing of the second damper part 7 form a second counterstop 12 in the sense of the invention. The first stop 9 is formed by toothed flanks of the toothing 20 of the second damper part 7.

Furthermore, the first damper part 6 designed as a housing has a first one Counter stop 11 on. Analogously to the first exemplary embodiment, a stop 8 is arranged on the carcass rail 2, which stop can, for example, be made in one piece with the carcass rail 2.

Figure 25A shows an extended position of the pull-out guide 1. The first stop 8 and the first counter-stop 11, as well as the second stop 9 and the second counter-stop 12 are spaced from one another.

When inserting the drawer rail 4, as shown in Figure 25B is shown, the second stop 9 hits the second counter-stop 12. The first counter-stop 11 is spaced from the first stop 8. In Figure 25C the middle rail 3 is identical to the in Figure 25B position shown. From the comparison of these two cited figures it can be seen that the damper 5 is longitudinally displaceable relative to the center rail 3 and is thus mounted in a floating manner on this. In Figure 25D a position of the pull-out guide 1 is shown in which the first stop 8 and the first counter-stop 11 are hit and the second stop 9 now also touches the second counter-stop 12. If the drawer rail 4 is pushed in further, a damping effect is achieved with which the pushing-in movement of the furniture part is damped. In Figure 25E the fully inserted position of the pull-out guide 1 is shown, the stops 8, 9 each touching the counter-stops 11, 12.

The ones in the Figures 25A to 25E The pull-out guide 1 shown is designed in the form of a telescopic pull-out guide. A damper 5 designed as a rotary damper could also be used in a differential pull-out guide.

In a further variant of the third exemplary embodiment, for example, the first stop 8 could be arranged on the drawer rail 4 and the rack 20, which has the stop 9, could be arranged on the body rail 2.

Legend to the reference numbers:

1

Pull-out guide

2

Cabinet rail

3

Middle rail

4th

Loading rail

5

mute

6th

first damper part

7th

second damper part

8th

first stop

9

second stop

10

Pull-in device

11

first counter-attack

12

second counter-attack

13

role

14th

feather

15th

Tilt slide

16

Sliding sleeve

17th

Mounting plate

18th

Carrier

19th

Assembly survey

20th

Rack

21st

Guide groove

22nd

Direction of insertion

23

Synchronization role

24

Mounting bracket

25th

Mounting bracket

Claims (10)

1. A pull-out guide (1) for a furniture part, in particular a drawer, able to be pulled out from a furniture carcass and pushed therein again, wherein the pull-out guide (1) has at least one carcass rail (2) for securing to the furniture carcass and at least one drawer rail (4) for securing to the furniture part and at least one middle rail (3), wherein the middle rail (3) is mounted in a longitudinally displaceable manner on the carcass rail (2) and the drawer rail (4) is mounted in a longitudinally displaceable manner on the middle rail (3), and wherein the pull-out guide (1) has at least one damper (5) for damping a push-in motion of the furniture part, characterized in that the at least one damper (5) is mounted in a floating manner on the middle rail (3).
2. A pull-out guide (1) according to claim 1, characterized in that the damper (5) comprises a first damper part (6) and a second damper part (7), wherein the first damper part (6) and the second damper part (7) are movable relative to one another to form a damping effect during a damping procedure, and the first damper part (6) and the second damper part (7) are mounted on the middle rail (3) in a manner jointly movable relative to the middle rail (3), in particular longitudinally displaceable.
3. A pull-out guide (1) according to claim 2, characterized in that a first stop (8) is arranged on the carcass rail (2) and a second stop (9) is arranged on the drawer rail (4), wherein a first counter stop (11) of the first damper part (6) can be brought into contact with the first stop (8) and a second counter stop (12) of the second damper part (7) can be brought into contact with the second stop (9), wherein during the damping procedure of the pull-out guide (1), in which the push-in motion of the furniture part is damped, the first counter stop (11) contacts the first stop (8) and the second counter stop (12) contacts the second stop (9).
4. A pull-out guide (1) according to claim 3, characterized in that the first stop (8) is formed on the carcass rail (2) and/or in that the second stop (9) is formed on the drawer rail (4).
5. A pull-out guide (1) according to any one of claims 1 to 4, characterized in that the damper (5) is in the form of a linear damper and a/the first damper part (6) and a/the second damper part (7) are movable relative to one another in an axial direction to form the damping effect.
6. A pull-out guide (1) according to any one of claims 1 to 5, characterized in that the pull-out guide (1) has a slide sleeve (16), arranged on the middle rail (3), for mounting of the damper (5) in a longitudinally displaceable manner.
7. A pull-out guide (1) according to any one of claims 1 to 4, characterized in that the damper (5) is in the form of a rotary damper and a/the first damper part (6) and a/the second damper part (7) are rotatable relative to one another to form the damping effect.
8. A pull-out guide (1) according to claim 7, characterized in that the first damper part (6) or the second damper part (7) has toothing, and a toothed rack (20) is arranged on the drawer rail (4) or on the carcass rail (2), wherein the toothing can be brought into engagement with the toothed rack (20).
9. A pull-out guide (1) according to any one of claims 1 to 8, characterised in that it has a pull-in device (10), preferably arranged on the carcass rail (2), for pulling the drawer rail (4) into the furniture carcass.
10. A pull-out guide (1) according to any one of claims 1 to 9, characterised in that it has a device for forced coupling of the motion of the middle rail (3) and the drawer rail (4) upon pushing in and pulling out of the piece of furniture.

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