Drawer pull-out guide

Abstract

A drawer pull-out guide includes a first guide rail and a second guide rail displaceably supported relative to one another. A supporting element is arranged on the first guide rail, and the supporting element is configured to be supported, at least temporarily, on the second guide rail. A position of the supporting element relative to the second guide rail can be adjusted by an adjustment device, and, after adjustment has been made, can be fixed relative to the first guide rail. The at least one supporting element can be adjusted in a height direction, seen in the mounted position of the drawer pull-out guide, by the adjustment device.

Claims

1. A drawer pull-out guide, comprising: a first guide rail and a second guide rail displaceably supported relative to one another; and a supporting element arranged on the first guide rail, the supporting element being configured to be supported, at least temporarily, on the second guide rail; wherein a position of the supporting element relative to the second guide rail is adjustable by an adjustment device, and is fixable relative to the first guide rail after adjustment of the position has been made, wherein the supporting element is adjustable in a height direction by the adjustment device when the drawer pull-out guide is in the mounted position, wherein the adjustment device includes a movably-supported adjustment element configured to adjust a position of the supporting element, and wherein the adjustment element is rotationally supported to allow the position of the supporting element to be adjusted by a rotation of the adjustment element.

2. The drawer pull-out guide according to claim 1, wherein the guide rails are configured to be displaceable relative to one another between a closed position and an open position, wherein the supporting element has a play in relation to the second guide rail at least in the closed position, the adjustment device being configured to adjust the play.

3. The drawer pull-out guide according to claim 2, wherein an amount of the play in the open position is smaller than an amount of the play in the closed position, and/or the supporting element bears against the second guide rail without play in the open position.

4. The drawer pull-out guide according to claim 1, wherein the adjustment device has a self-locking configuration.

5. The drawer pull-out guide according to claim 1, further comprising a securing element configured to fix the position of the supporting element after adjustment.

6. The drawer pull-out guide according to claim 1, wherein the supporting element is a rotationally mounted supporting roller.

7. The drawer pull-out guide according to claim 1, wherein the supporting element is arranged on a rear-end region of the first guide rail.

8. A drawer pull-out guide, comprising: a first guide rail and a second guide rail displaceably supported relative to one another; and a supporting element arranged on the first guide rail, the supporting element being configured to be supported, at least temporarily, on the second guide rail; wherein a position of the supporting element relative to the second guide rail is adjustable by an adjustment device, and is fixable relative to the first guide rail after adjustment of the position has been made, wherein the supporting element is adjustable in a height direction by the adjustment device when the drawer pull-out guide is in the mounted position, wherein the adjustment device includes a movably-supported adjustment element configured to adjust a position of the supporting element, and wherein the adjustment element includes a rotationally supported eccentric or a rotationally supported worm wheel.

9. A drawer pull-out guide, comprising: a first guide rail and a second guide rail displaceably supported relative to one another; and a supporting element arranged on the first guide rail, the supporting element being configured to be supported, at least temporarily, on the second guide rail; wherein a position of the supporting element relative to the second guide rail is adjustable by an adjustment device, and is fixable relative to the first guide rail after adjustment of the position has been made, wherein the supporting element is adjustable in a height direction by the adjustment device when the drawer pull-out guide is in the mounted position, wherein the adjustment device includes a movably-supported adjustment element configured to adjust a position of the supporting element, and wherein the adjustment element co-operates with a tooth arrangement connected to the supporting element.

10. A drawer pull-out guide, comprising: a first guide rail and a second guide rail displaceably supported relative to one another; and a supporting element arranged on the first guide rail, the supporting element being configured to be supported, at least temporarily, on the second guide rail; wherein a position of the supporting element relative to the second guide rail is adjustable by an adjustment device, and is fixable relative to the first guide rail after adjustment of the position has been made, wherein the supporting element is adjustable in a height direction by the adjustment device when the drawer pull-out guide is in the mounted position, and wherein the first guide rail includes two or more openings spaced from one another in the height direction, the two or more openings being configured to selectively receive the supporting element.

11. A drawer pull-out guide, comprising: a first guide rail and a second guide rail displaceably supported relative to one another; and a supporting element arranged on the first guide rail, the supporting element being configured to be supported, at least temporarily, on the second guide rail; wherein a position of the supporting element relative to the second guide rail is adjustable by an adjustment device, and is fixable relative to the first guide rail after adjustment of the position has been made, wherein the supporting element is adjustable in a height direction by the adjustment device when the drawer pull-out guide is in the mounted position, and wherein the position of the supporting element permanently fixable after adjustment by welding, bonding or tumbling.

12. A drawer pull-out guide, comprising: a first guide rail and a second guide rail displaceably supported relative to one another; and a supporting element arranged on the first guide rail, the supporting element being configured to be supported, at least temporarily, on the second guide rail; wherein a position of the supporting element relative to the second guide rail is adjustable by an adjustment device, and is fixable relative to the first guide rail after adjustment of the position has been made, wherein the supporting element is adjustable in a height direction by the adjustment device when the drawer pull-out guide is in the mounted position, and wherein the second guide rail includes a side limb and a transverse limb connected to the side limb, wherein the supporting element is arranged to be supported on an underside of the transverse limb of the second guide rail in the mounted position of the drawer pull-out guide, wherein the transverse limb is flat over an entire length thereof.

13. A drawer pull-out guide, comprising: a first guide rail and a second guide rail displaceably supported relative to one another; and a supporting element arranged on the first guide rail, the supporting element being configured to be supported, at least temporarily, on the second guide rail; wherein a position of the supporting element relative to the second guide rail is adjustable by an adjustment device, and is fixable relative to the first guide rail after adjustment of the position has been made, wherein the supporting element is adjustable in a height direction by the adjustment device when the drawer pull-out guide is in the mounted position, and wherein the drawer pull-out guide further comprises a running carriage with load-transmitting rolling bodies between the first guide rail and the second guide rail.

14. A method for mounting a supporting element to a drawer pull-out guide, the drawer pull-out guide including: a first guide rail and a second guide rail displaceably supported relative to one another; and a supporting element arranged on the first guide rail, the supporting element being configured to be supported, at least temporarily, on the second guide rail; wherein a position of the supporting element relative to the second guide rail is adjustable by an adjustment device, and is fixable relative to the first guide rail after adjustment of the position has been made, and wherein the supporting element is adjustable in a height direction by the adjustment device when the drawer pull-out guide is in the mounted position, wherein, the method comprises: arranging the supporting element on the first guide rail of the drawer pull-out guide, adjusting the supporting element at a predetermined position relative to the second guide rail with the aid of the adjustment device, and fixing the supporting element relative to the first guide rail, wherein the supporting element is moved in a first movement direction for adjusting the predetermined position when the supporting element abuts against the second guide rail, and is moved back in a second movement direction opposite the first movement direction until the predetermined position is reached.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) Further details and advantages of the present invention will be evident from the following description with respect to the drawings, in which:

(2) FIG. 1 is a perspective view of an item of furniture having a furniture carcass and drawers displaceable relative thereto,

(3) FIG. 2a, 2b show the drawer pull-out guide in a perspective cross-sectional view and an enlarged detail view thereof,

(4) FIG. 3a-3c show the drawer pull-out guide in a perspective cross-sectional view and two detail views with a different height position of the supporting element,

(5) FIG. 4a, 4b show the rear-end region of the drawer pull-out guide in an exploded view and an enlarged detail view thereof,

(6) FIG. 5a-5c show a further embodiment of the invention with a plurality of openings for supporting the supporting element, the openings being spaced from one another in the height direction, and

(7) FIG. 6a-6c show a further embodiment of the invention with a rotatably-supported worm wheel for adjusting the play between the supporting element and the second guide rail.

DETAILED DESCRIPTION OF INVENTION

(8) FIG. 1 shows an item of furniture 1 having a cupboard-shaped furniture carcass 2, and drawers 3 are displaceably supported relative to the furniture carcass 2 by drawer pull-out guides 4. The drawers 3 include a front panel 5, a drawer bottom 6, drawer sidewalls 7 and a rear wall 8. The drawer pull-out guides 4 include at least two guide rails 10, 11, 12 configured to be displaceable relative to one another. In the shown embodiment, a first guide rail 10 (drawer rail) is connected or is configured to be connected to the drawer sidewall 7. A second guide rail 11 (central rail) is displaceably supported between the first guide rail 10 and a third guide rail 12 to be fixed to the furniture carcass 2. The third guide rail 12 includes fastening sections 9a and 9b for mounting the drawer pull-out guide 4 to the furniture carcass 2.

(9) FIG. 2a shows the drawer pull-out guide 4 in a perspective cross-sectional view. A hook 13 is arranged on the rear-end of the first guide rail 10, the hook 13 engaging in a corresponding recess of the rear wall 8 or of the drawer sidewall 7 in a mounted condition of the drawer 3 on the drawer pull-out guide 4. As a result, the rear-end portion of the drawer 3 can be stabilized in a direction extending transversely to the longitudinal direction (L). A first running carriage 18 (not visible here, see FIG. 3c) having load-transmitting rolling bodies 18a is displaceably supported between the first guide rail 10 and the second guide rail 11. A movement of the first running carriage 18 can be synchronized with a movement of a second running carriage 19 (FIG. 3a) by a pinion 15 rotatably mounted on the second guide rail 11, the second running carriage 19 being displaceably supported between the third guide rail 12 (carcass rail) and the second guide rail 11 (central rail). The pinion 15 meshes with a first toothed rack of the first running carriage 18 on the one hand, and with a second toothed rack 14 of the second running carriage 19 on the other hand. At least one supporting element 17 for supporting the second guide rail 11 is arranged on the rear-end region of the first guide rail 10. For adjusting a position of the supporting element 17, an adjustment device 16 with a movably-mounted adjustment element 16a is provided. A position of the supporting element 17 can be adjusted by an actuation of the adjustment element 16a. The second guide rail 11 includes a side limb 11a and a transverse limb 11b connected to the side limb 11a, and the supporting element 17 is arranged to be supported on an underside of the transverse limb 11b of the second guide rail 11. In the shown figure, the supporting element 17 is configured as a supporting roller. Preferably, the supporting roller is rotatably mounted about a horizontally extending axis in the mounted position.

(10) FIG. 2b shows the encircled region of FIG. 2a in an enlarged view, in which the play (X) between the supporting element 17 and the transverse limb 11b of the second guide rail 11 is visible. In the shown FIG. 2b, the play (X) is dimensioned too large, so that the second guide rail 11 can unduly be tilted about an axis extending transversely to the longitudinal direction (L). By rotating the adjustment element 16a of the adjustment device 16, the play (X) can be adjusted to a predetermined value. For this purpose, the adjustment element 16a is rotated as long in a first rotational direction, until the supporting element 17 contacts the underside of the transverse limb 11b (play equal to zero). Subsequently, the adjustment element 16a is rotated in a second rotational direction, opposite the first rotational direction, until the play (X) has a predetermined value. This can be automatically done in the factory by an assembly robot. After adjustment of the play (X), the supporting element 17 is fixed in its position, for example welded, bonded or tumbled.

(11) FIG. 3a shows the drawer pull-out guide 4 in a perspective cross-sectional view, in which at least one running carriage 18 with load-transmitting rolling bodies 18a is displaceably arranged between the first guide rail 10 and the second guide rail 11. At least one second running carriage 19 with load-transmitting rolling bodies 19a is also arranged between the third guide rail 12 and the second guide rail 11. The transverse limb 11b of the second guide rail 11 can extend substantially over an entire length of the second guide rail 11.

(12) FIG. 3b shows the encircled region of FIG. 3a in an enlarged view. By an actuation of the adjustment element 16a, the supporting element 17 has been moved, starting from the position according to FIG. 2b, as long as the supporting element 17 abuts against the second guide rail 11, preferably against the underside of the transverse limb 11b of the second guide rail 11. The play (X) is therefore equal to zero and constitutes a reference value for the subsequent adjustment operation.

(13) For a correct adjustment of the play (X), the adjustment element 16a, starting from the position of the supporting element 17 according to FIG. 3b, is adjusted as long in the opposite direction until the play (X) occurring between the supporting element 17 and the second guide rail 11 has a predetermined value (for example 0.1 mm). That position is shown in FIG. 3c. The relative position of the supporting element 17 is being held either in a self-locking manner. However, the relative position of the supporting element 17 can be fixed by an additional securing element and/or can be permanently fixed.

(14) FIG. 4a shows the rear-end portion of the drawer pull-out guide 4 in an exploded view, in which the first running carriage 18, configured to be displaceable between the first guide rail 10 and the second guide rail 11, with the load-transmitting rolling bodies 18a and a retraction device 20 for retracting the first guide rail 10 into a closed end position can be seen. The retraction device 20 may include a, preferably hydraulic, damping device for dampening the spring-assisted retraction movement of the first guide rail 10.

(15) FIG. 4b shows the encircled region of FIG. 4a in an enlarged view. The first guide rail 10 includes a U-shaped profile having two side limbs 10a, 10b spaced from one another, the side limbs 10a, 10b being connected to one another by a transverse limb 10c. The supporting element 17, in the mounted position, is received between the two side limbs 10a, 10b of the first guide rail 10. The supporting element 17 can be fixed to the side limb 10a facing towards the fastening section 9b by the adjustment element 16a in the form of the eccentric. The adjustment element 16a includes a pin 21 engaging into a corresponding opening 22 of the first guide rail 10 in the mounted position. After adjustment of the position of the supporting element 17 relative to the first guide rail 10, the pin 21 of the adjustment element 16a can be permanently fixed to the first guide rail 10, for example by tumbling (radial riveting).

(16) FIG. 5a shows a perspective view of the first guide rail 10 according to a further embodiment of the invention. FIG. 5b shows the framed region of FIG. 5a in an enlarged view. In this embodiment, the first guide rail 10 includes two or more openings 22 spaced from one another in the height direction (H), the openings 22 being provided for selectively receiving the supporting element 17. The supporting element 17 can be introduced in one of the openings 22 either directly via a pin 21, so that the supporting element 17 can adopt different height positions in order to adapt the play (X). Alternatively, also with this embodiment, the adjustment can be additionally performed by a movably-mounted adjustment element 16a. The play (X) between the supporting element 17 and the second guide rail 11 can thus be adjusted such that the pin 21 of the adjustment element 16a or of the supporting element 17 can be alternatively introduced in one of the openings 22 spaced from each other in the height direction (H) and is subsequently fixed. FIG. 5c shows a side view of the rear-end portion of the first guide rail 10 according to this embodiment. The openings 22 can be arranged offset relative to one another in the height direction (H), for example by 0.2 mm.

(17) FIG. 6a-6c show a further embodiment of the invention, in which the adjustment device 16 for adjusting the play (X) between the supporting element 17 and the second guide rail 11 includes an adjustment element 16a in the form of a rotationally mounted worm wheel. FIG. 6b shows the encircled region of FIG. 6a in an enlarged view. The adjustment element 16a includes a receiving device 23 for receiving a tool, preferably a screwdriver, and a position of the supporting element 17 can be adjusted by rotating the receiving device 23 with the aid of the tool. On the back side of the adjustment element 16a in the form of a worm wheel, a spiral-shaped guide track, as commonly known, is arranged. The spiral-shaped guide track cooperates with a tooth arrangement 24 connected to the supporting element 17. The tooth arrangement 24 can be seen in FIG. 6c, in which the rotatably mounted adjustment element 16a is hidden. The adjustment element 16a in the form of the worm wheel, jointly with the tooth arrangement 24, forms a drive having a high level of self-locking, so that the position of the supporting element 17 does not alter upon an adjustment and upon a load of the drawer 3.