PULL-OUT GUIDE FOR GUIDING A DRAWER, AND ITEM OF FURNITURE HAVING A PULL-OUT GUIDE

Abstract

A pull-out guide for guiding a drawer, having a cabinet rail for attaching to a furniture cabinet, and a drawer rail for attaching to a drawer, wherein a roller carriage is provided between the rails, the rollers of which during mutually relative movement of the rails roll on a guide face of the respective rail, and which roller carriage moves along these rails. In an extended state of the drawer rail, the roller carriage is positioned at the drawer-rail side end on the cabinet rail which lies therebelow. The roller carriage has a projecting support portion for supporting the drawer rail on the cabinet rail, which support portion in a completely extended state of the drawer rail is positioned in a region which lies outside a guide face on the cabinet rail, on which the rollers of the roller carriage roll and may move to the maximum extent.

Description

This application claims the benefit under 35 USC §119(a)-(d) of German Application No. 20 2014 103 864.7 filed Aug. 20, 2014, the entirety of which is incorporated herein by reference.

FIELD OF THE INVENTION

The invention relates to a pull-out guide for guiding a drawer and to an item of furniture having such a pull-out guide.

BACKGROUND OF THE INVENTION

Pull-out guides for guiding a drawer have already become known in many embodiments as a full-extension pull-out with cabinet rail, central rail, and drawer rail, and as a partial or simple pull-out with cabinet rail and drawer rail. One application relates to base-mounted guides, for example, in which the pull-out guides are attached below a drawer base of a drawer which is made of wood, for example. Nevertheless, a pull-out which extends as far as possible is desired in particular in the case of partial pull-outs which are composed of a cabinet rail and of a drawer rail. Mounting means have to be correspondingly adapted thereto. The load which is envisaged for the drawer and to which the mounting means, for example a roller carriage between the rails, is exposed here represents one limitation for the mounting means.

SUMMARY OF THE INVENTION

The invention is based on the object of providing a pull-out guide which is optimized in particular in terms of pull-out functionality.

The invention proceeds from a pull-out guide for guiding a drawer, having a cabinet rail for attaching to a furniture cabinet, and a drawer rail for attaching a drawer, wherein a roller carriage is provided between the rails, the rollers of which roller carriage during mutually relative movement of the rails roll on a guide face of the respective rail, and which roller carriage hereby moves along these rails, and wherein in an extended state of the drawer rail the roller carriage is positioned at the drawer-rail side end on the cabinet rail which lies therebelow.

The core of the present invention now lies in that the roller carriage has a projecting support portion for supporting the drawer rail on the cabinet rail, which support portion in a completely extended state of the drawer is positioned in a region which lies outside a guide face on the cabinet rail, on which the rollers of the roller carriage roll and may move to the maximum extent.

On account of this approach, a roller carriage which indeed has an effective support length which includes the projecting support portion, but with a view to a position at the drawer-rail side end of the cabinet rail lying therebelow is displaceable so far in the direction of the drawer rail as if the projecting support portion were nonexistent, is achieved. Accordingly, as compared to a state in which a conventional roller carriage having the same length is provided, the drawer rail having the roller carriage disposed therebelow may be farther displaced in the direction of the forward end of the cabinet rail.

Moreover, a further advantageous aspect may lie in that the effective support length for the drawer rail even in the fully extended state includes the projecting support portion, when the latter is accordingly conceived so as to be load bearing. Support of the rail lying thereabove in the case of conventional roller carriages is only provided until the end of the guide face lying therebelow, on which rollers of the roller carriage roll, has been reached.

The present invention furthermore proceeds from a pull-out guide for guiding a drawer, having a cabinet rail for attaching to a furniture cabinet, and a drawer rail for attaching a drawer, and a central rail between the drawer rail and the cabinet rail, wherein a roller carriage is provided between the drawer rail and the central rail, the rollers of which roller carriage during mutually relative movement of the drawer rail and the central rail roll on a guide face of the respective rail and hereby moves along these rails, and wherein in an extended state of the drawer rail the roller carriage is positioned at the drawer-rail side end on the central rail which lies therebelow. The substantial aspect now lies in that the roller carriage has a projecting support portion for supporting the drawer rail on the central rail, which support portion in a completely extended state of the drawer rail is positioned in a region which lies outside a guide face on the central rail, on which rollers of the roller carriage roll and may move to the maximum extent.

On account of this measure, the advantages which are discussed above with reference to the cabinet rail and the drawer rail may be utilized in the present case between the drawer rail and the central rail. This means, in particular, a comparatively long roller carriage which, however, with a view to the maximum extendibility of the rails in relation to one another, is only limiting in terms of a length which corresponds to the length of the roller carriage minus the projecting support portion.

In a third case, the roller carriage according to the invention is provided in a pull-out, having a cabinet rail, a central rail, and a drawer rail between the central rail and the cabinet rail, such that the advantages which have just been discussed arise in a corresponding manner when a roller carriage according to the present invention is employed between the cabinet rail and the central rail.

The core of the present invention here lies in that the roller carriage has a projecting support portion for supporting the central rail on the cabinet rail, which support portion in a completely extended state of the central rail is positioned in a region which lies outside a guide face on the cabinet rail, on which the rollers of the roller carriage roll and may move to the maximum extent.

Preferably, the projecting support portion supports the rail which is disposed thereon in a region which is outside a guide face of the rail which is disposed therebelow, on which the rollers of the roller carriage roll and may move to the maximum extent, when the rail is fully extended.

In a further preferred design embodiment of the invention, the projecting support portion comprises one or a plurality of support rollers.

In this way, the non-projecting portion of the roller carriage having support rollers may be lengthened in a quasi seamless manner by the support portion. In a state in which the support rollers are mounted between guide faces of the rails, the roller carriage thus acts like a conventional roller carriage which has a length which corresponds to the length of the roller carriage according to the present invention, having a projecting support portion. However, for maximum displaceability of the roller carriage to an end of a rail, for example of the cabinet rail or of the central rail, on the side on which the projecting support portion is located, only such a length which has been reduced by the projecting support portion is of importance, on account of which a higher extendibility of the rails overall results.

In a further advantageous design embodiment of the present invention, the projecting support portion protrudes beyond a lateral guide region of the roller carriage, which laterally encompasses a rail on which the roller carriage is mounted. Depending on the design embodiment, opposite lateral guide regions which are protruded may also be provided.

The projecting support portion which protrudes in a balcony-type manner is thus fixed in relation to the lateral support region which normally cannot depart from the end of a guide face or of a rail, respectively, on which the lateral support region moves. According to the invention, this does not apply to the projecting support portion.

Moreover, it is advantageous for the projecting support portion to be added on to a roller-carriage part having a lateral guide region.

It is even conceivable for a conventional roller carriage to be able to be retrofitted in this way with a support portion projecting in a balcony-type manner or for the roller carriage to be employed in the conventional way without the support portion, respectively.

Moreover, it is preferable for the roller carriage to be a caged roller carriage having rollers on a primary side and rollers on at least one lateral guide region which laterally encompass a rail on which the roller carriage is mounted. On account of also lateral rollers, a caged roller carriage of this type has laterally stabilizing running characteristics in a pull-out guide.

In a further preferred design embodiment of the invention, the projecting support portion protrudes by more than 30% beyond a part of the roller carriage which has a lateral guide region.

In this way, the conventional support length of the roller carriage is lengthened by approx. 30%, in particular between two guide faces of rails. It is also conceivable for an even larger protrusion, which corresponds to 50, 60, 70, 80% of the length of the remaining roller carriage having laterally opposed guide regions, to be implemented.

Moreover, it is favorable for the rail on which the roller carriage is displaceably mounted to have a stop for a roller carriage, which enables the projecting support portion to pass through. On account thereof, it is avoided that the roller carriage at the end of the rail on which the roller carriage runs is stopped already when the roller carriage reaches a leading edge of the projecting support portion and thus no further displacement of the roller carriage, and thus no “shortening” of the roller carriage with a view to maximum displaceability of the rail which is mounted on the roller carriage to a rail end, is ensured.

It is furthermore advantageous for the rail of the pull-out guide which is displaceably mounted on a roller carriage which is disposed therebelow to be capable of being extended to a maximum pull-out position in which an inboard end, in relation to an assembly on a furniture cabinet, is displaceable up to or at least almost up to the inboard end of the roller carriage in the maximum stop position of the latter, until this rail stops at a stop.

In this way, almost a full-extension pull-out may be implemented. The extension length is approximately the length of the drawer rail which is located on the roller carriage minus the region of the roller carriage which has a lateral guide region on the rail lying therebelow.

The support portion which projects in a balcony-type manner and which may be utilized for mounting the rails in this context is therefore not of importance.

BRIEF DESCRIPTION OF THE DRAWINGS

A plurality of exemplary embodiments will be explained in more detail in the following by means of the drawings, while stating further advantages and details.

FIG. 1 shows a simple pull-out in a perspective illustration;

FIG. 2 shows a side view of the simple pull-out from FIG. 1, from a side which is not visible in FIG. 1;

FIG. 3 shows an alternative design embodiment of a forward end portion of the pull-out guide as per FIG. 2;

FIG. 4 shows an enlarged illustration of the rearward end portion of the pull-out guide as per FIG. 1 or FIG. 2, respectively, from the side which is visible in FIG. 1;

FIG. 5 shows a perspective illustration of a detail of the pull-out guide as per FIG. 1, with the drawer rail removed, from an opposite viewpoint in relation to the one of the illustration of FIG. 1, having a visible roller carriage;

FIG. 6 shows an illustration corresponding to FIG. 5, in which the roller carriage has been displaced to the forward end of the cabinet rail in relation to an installed state, likewise without the drawer rail;

FIG. 7 shows a furniture cabinet having a drawer without a front panel assembled therein, on a pull-out guide according to the invention (left-hand side) and a conventional pull-out guide (right-hand side), in a front view;

FIGS. 8 a and 8b show in each case enlarged sectional views of the sections A-A (FIG. 8a) and B-B (FIG. 8a) which are indicated in FIG. 7; and

FIG. 9 shows a pull-out guide according to the invention, which has been inserted into a furniture cabinet, in a perspective illustration from obliquely above.

DETAILED DESCRIPTION OF THE INVENTION

A simple pull-out 1 having a cabinet rail 2 and a drawer rail 3 is illustrated in FIG. 1. A 90° angular deflection 6 and an opening 7 for introducing a fixing screw, for attaching to a cabinet traverse 5 (see FIG. 8) so as to bear on the cabinet traverse 5, are provided at a forward end of the cabinet rail 2. By means of the fixing screw, the simple pull-out 1 may also be used in a vertical orientation.

A receptacle hook 8 for the rearward end of a drawer (not illustrated) and a front latching block 9 for latching on a drawer (not illustrated) are provided on the drawer rail 3.

An assembly slot 11 for lateral adjustment of the simple pull-out 1 is in the rearward region 10 of the cabinet rail 2.

Moreover, an automatic retraction element 12, which is composed of a damper 13 and a spring unit 14, is assembled on the cabinet rail 2, so as to enable damped retraction of the drawer rail 3 to the fully retracted state.

In FIG. 2, the cabinet rail 2, the drawer rail 3, having a front latching unit 9 and a receptacle hook 8, are illustrated in a truncated manner in a side view which is opposed to that of the viewpoint of FIG. 1. Moreover, rollers 15, 16 for bearing the load on the drawer rail 3 are visible.

The roller 15 is rotatably mounted on the cabinet rail 2 in a forward end region 4a (see FIG. 3 or FIG. 6, for example).

The front latching block 9 having the additional configuration of a stop functionality for delimiting the maximum retracted drawer position is illustrated in FIG. 3. To this end, a stop cam 9a is configured on the front latching block 9, and a stop web 17 is configured on the cabinet rail 2.

Additionally or alternatively, a stop in relation to the cabinet rail 2 may be implemented on the drawer rail 3, as is shown in FIG. 4. To this end, a stop block 18 which interacts with a shock- and noise-mitigating element, for example a rubber element 19 which is assembled on the drawer rail 3, is provided on the cabinet rail 2.

In FIG. 5, the cabinet rail 2 is illustrated with the drawer rail 3 having been removed, such that from a viewpoint according to FIG. 2 in a perspective illustration from obliquely above, a roller carriage 20 which by way of rollers 21, 22 rolls on a guide face 2a of the cabinet rail 2 is visible.

Moreover, rollers 23 which roll on a lateral guide face of the drawer rail (not illustrated), so as to laterally stabilize the drawer rail, are provided in a laterally encompassing portion 24 of the roller carriage 20.

The rollers 22 are mounted in a projecting support portion of the roller carriage 20, which projecting support portion protrudes in a balcony-type manner beyond that part of the roller carriage 20 that has the laterally encompassing portion 24. Depending on the length of the simple pull-out 1, the complete length of the roller carriage 20, including the projecting support portion 25 having its rollers 22 for mounting the drawer rail 3 which is disposed thereupon, may be utilized when the rollers 21, 22 roll on the guide face 2a. The roller carriage thus has the function of a roller carriage having presently ten rollers with a comparatively large support length.

According to the invention, the full roller count may be utilized across more than, for example, 80% of the length of the guide face 2 for supporting the drawer rail which is mounted thereupon.

If the drawer rail is fully extended, with a corresponding displacement of the roller carriage 20 to the forward end 4 of the cabinet rail 2, the maximum pull-out position is terminated once the roller carriage 20 at the end of the cabinet rail 2 stops at a stop 26 (see FIG. 6) and, moreover, the drawer rail by way of its rearward end contacts the end 20a or a corresponding end region on the roller carriage 20. On account of the projecting support portion 25, stopping does not already take place at the rollers 22, but only once the projecting support portion 25 has passed the stop 26 and makes its way into the region of the roller carriage, in which the laterally encompassing portion 24 is configured. On account thereof, a drawer rail can be extended comparatively farther in relation to the cabinet rail 2, despite a comparatively large roller carriage having more than six rollers, for example ten rollers, being available when rolling on the guide face 2a for support across a substantial region of the rail length.

Moreover, in the fully extended state according to FIG. 6, the projecting support portion 25 in the region which protrudes in a balcony-type manner can support the drawer rail in a region where support of the rail lying thereabove normally is not available, since the end of the guide face lying therebelow, on which rollers of a roller carriage roll, has been reached.

On account of this measure, a drawer rail having a drawer disposed thereon can not only be farther extended, but there is also the potential for the simple pull-out with an at least identical pull-out length to be assembled on the drawer in a slightly recessed manner, such that a front wall 27 or a correspondingly encircling frame does not have to be notched.

On account thereof, the fundamental structure of a drawer 28 (see FIG. 7) is not weakened. Moreover, a modest labor effort is required, since no clearances have to be provided. This situation will be explained in more detail in FIGS. 7, 8a, and 8b.

A cabinet 29 (see also FIG. 9 in this respect) having a drawer 28 with a front wall 27, which is assembled therein, is illustrated in FIG. 7.

In the left part of the picture, a simple pull-out 1 according to the invention is assembled under a drawer base, whereas in the right part of the picture, the attachment of a conventional pull-out is visualized in a schematically indicated manner.

As can be seen already in FIG. 7, the front wall 27 has to be notched in order for the conventional pull-out to be attached, so that the pull-out is capable of being assembled as far as possible toward the forward end of the drawer 28, in order to obtain the pull-out length which has been correspondingly predefined.

In the simple pull-out 1 which is constructed according to the invention, a corresponding notch or clearance 30, respectively, as in the conventional pull-out (see FIG. 7 right-hand side, or sectional view FIG. 8b, respectively), is not required.

This is because at a comparable length of a roller carriage between the cabinet rail 2 and the drawer rail 3, the roller carriage 20 according to the invention may be farther displaced through the projecting support portion 25 toward the forward end of the cabinet rail, this enabling the drawer rail to be correspondingly farther extended. The added displacement corresponds to approximately the length of the projecting support portion. On account thereof, not only can a clearance be saved, but additional pull-out length may optionally be obtained.

It can be seen in the sectional view of FIG. 8a that the simple pull-out 1 merely contacts the front wall 27, whereas for at least comparable functionality the clearance 30 is required in a conventional pull-out in FIG. 7.

LIST OF REFERENCE SIGNS

• 1 Simple pull-out
• 2 Cabinet rail
• 2 a Guide face
• 3 Drawer rail
• 4 Forward end
• 4 a Forward end region
• 5 Cabinet traverse
• 6 90° angular deflection
• 7 Opening
• 8 Receptacle hook
• 9 Front latching block
• 9 a Stop cam
• 10 Rearward region
• 11 Assembly slot
• 12 Automatic retraction element
• 13 Damper
• 14 Spring unit
• 15 Rollers
• 16 Rollers
• 17 Stop web
• 18 Stop block
• 19 Rubber element
• 20 Roller carriage
• 20 a End of roller carriage
• 21 Rollers
• 22 Rollers
• 23 Rollers
• 24 Laterally encompassing portion
• 25 Projecting support portion
• 26 Stop
• 27 Front wall
• 28 Drawer
• 29 Cabinet
• 30 Clearance

Claims

1. A pull-out guide for guiding a drawer, having a cabinet rail for attaching to a furniture cabinet, and a drawer rail for attaching to a drawer, wherein a roller carriage is provided between the rails, the rollers of which roller carriage during mutually relative movement of the rails roll on a guide face of the respective rail, which roller carriage hereby moves along these rails, and wherein in an extended state of the drawer rail the roller carriage is positioned at the drawer-rail side end on the cabinet rail which lies therebelow, and wherein the roller carriage has a projecting support portion for supporting the drawer rail on the cabinet rail, which support portion in a completely extended state of the drawer rail is positioned in a region which lies outside a guide face on the cabinet rail, on which the rollers of the roller carriage roll and may move to the maximum extent.

2. A pull-out guide for guiding a drawer, having a cabinet rail for attaching to a furniture cabinet, and a drawer rail for attaching to a drawer, and a central rail between the drawer rail and the cabinet rail, wherein a roller carriage is provided between the drawer rail and the central rail, the rollers of which roller carriage during mutually relative movement of the drawer rail and the central rail roll on a guide face of the respective rail, and which roller carriage hereby moves along these rails, wherein in an extended state of the drawer rail the roller carriage is positioned at the drawer-rail side end on the central rail which lies therebelow, and wherein the roller carriage has a projecting support portion for supporting the drawer rail on the central rail, which support portion in a completely extended state of the drawer rail is positioned in a region which lies outside a guide face on the central rail, on which rollers of the roller carriage roll and may move to the maximum extent.

3. A pull-out guide for guiding a drawer, having a cabinet rail for attaching to a furniture cabinet, and a drawer rail for attaching to a drawer, and a central rail between the drawer rail and the cabinet rail, wherein a roller carriage is provided between the central rail and the cabinet rail, the rollers of which roller carriage during mutually relative movement of the central rail and the cabinet rail roll on a guide face of the respective rail, and which roller carriage hereby moves along these rails, wherein in an extended state of the central rail the roller carriage is positioned at the central-rail side end on the cabinet rail which lies therebelow, and wherein the roller carriage has a projecting support portion for supporting the central rail on the cabinet rail, which support portion in a completely extended state of the central rail is positioned in a region which lies outside a guide face on the cabinet rail, on which the rollers of the roller carriage roll and may move to the maximum extent.

4. The pull-out guide according claim 1, wherein the projecting support portion has one or a plurality of support rollers.

5. The pull-out guide according to claim 1, wherein the projecting support portion protrudes in a balcony-type manner beyond a lateral guide region of the roller carriage, which laterally encompasses a rail on which the roller carriage is mounted.

6. The pull-out guide according to claim 1, wherein the projecting support portion is added on to a roller-carriage part having a lateral guide region.

7. The pull-out guide according to claim 1, wherein the roller carriage is a caged roller carriage having rollers on a primary side and rollers on a lateral guide region which laterally encompasses a rail on which the roller carriage is mounted.

8. The pull-out guide according to claim 1, wherein the projecting support portion protrudes by more than 30% beyond a part of the roller carriage which has a lateral guide region.

9. The pull-out guide according to claim 1, wherein the rail on which the roller carriage is displaceably mounted has a stop for the roller carriage, which enables the projecting support portion to pass through.

10. The pull-out guide according to claim 1, wherein the rail of the pull-out guide which is displaceably mounted on a roller carriage which is disposed therebelow is capable of being extended to a maximum pull-out position in which an inboard end, in relation to an assembly on a furniture cabinet, is displaceable up to or at least almost up to the inboard end of the roller carriage in the maximum stop position of the latter, until this rail stops at a stop.

11. An item of furniture having a pull-out guide according to claim 1.

12. The pull-out guide according claim 2, wherein the projecting support portion has one or a plurality of support rollers.

13. The pull-out guide according to claim 2, wherein the projecting support portion protrudes in a balcony-type manner beyond a lateral guide region of the roller carriage, which laterally encompasses a rail on which the roller carriage is mounted.

14. The pull-out guide according to claim 2, wherein the projecting support portion is added on to a roller-carriage part having a lateral guide region.

15. The pull-out guide according to claim 2, wherein the roller carriage is a caged roller carriage having rollers on a primary side and rollers on a lateral guide region which laterally encompasses a rail on which the roller carriage is mounted.

16. The pull-out guide according to claim 2, wherein the projecting support portion protrudes by more than 30% beyond a part of the roller carriage which has a lateral guide region.

17. The pull-out guide according to claim 2, wherein the rail on which the roller carriage is displaceably mounted has a stop for the roller carriage, which enables the projecting support portion to pass through.

18. The pull-out guide according to claim 2, wherein the rail of the pull-out guide which is displaceably mounted on a roller carriage which is disposed therebelow is capable of being extended to a maximum pull-out position in which an inboard end, in relation to an assembly on a furniture cabinet, is displaceable up to or at least almost up to the inboard end of the roller carriage in the maximum stop position of the latter, until this rail stops at a stop.

19. An item of furniture having a pull-out guide according to claim 2.

20. The pull-out guide according claim 3, wherein the projecting support portion has one or a plurality of support rollers.

21. The pull-out guide according to claim 3, wherein the projecting support portion protrudes in a balcony-type manner beyond a lateral guide region of the roller carriage, which laterally encompasses a rail on which the roller carriage is mounted.

22. The pull-out guide according to claim 3, wherein the projecting support portion is added on to a roller-carriage part having a lateral guide region.

23. The pull-out guide according to claim 3, wherein the roller carriage is a caged roller carriage having rollers on a primary side and rollers on a lateral guide region which laterally encompasses a rail on which the roller carriage is mounted.

24. The pull-out guide according to claim 3, wherein the projecting support portion protrudes by more than 30% beyond a part of the roller carriage which has a lateral guide region.

25. The pull-out guide according to claim 3, wherein the rail on which the roller carriage is displaceably mounted has a stop for the roller carriage, which enables the projecting support portion to pass through.

26. The pull-out guide according to claim 3, wherein the rail of the pull-out guide which is displaceably mounted on a roller carriage which is disposed therebelow is capable of being extended to a maximum pull-out position in which an inboard end, in relation to an assembly on a furniture cabinet, is displaceable up to or at least almost up to the inboard end of the roller carriage in the maximum stop position of the latter, until this rail stops at a stop.

27. An item of furniture having a pull-out guide according to claim 3.