EP4162838A1 - Drawer pull-out guide - Google Patents

Abstract

Drawer pull-out guide (4), comprising:- a first guide rail (10) and at least one second guide rail (11), which are mounted so as to be displaceable relative to one another,- at least one support element (17) arranged on a first guide rail (10) for at least temporary support of the second guide rail (11),- wherein the position of the at least one support element (17) relative to the second guide rail (11) can be adjusted by an adjusting device (16) and can be fixed relative to the first guide rail (10) after the adjustment has been made, wherein the at least one The support element (17) can be adjusted in a height direction (H) by the adjustment device (16) in the mounting position of the drawer pull-out guide (4).

Description

• eine erste Führungsschiene und wenigstens eine zweite Führungsschiene, welche relativ zueinander verschiebbar gelagert sind,
• wenigstens ein an einer ersten Führungsschiene angeordnetes Abstützelement zum zumindest zeitweisen Abstützen an der zweiten Führungsschiene,
• wobei die Lage des wenigstens einen Abstützelementes relativ zur zweiten Führungsschiene durch eine Einstellvorrichtung einstellbar und nach erfolgter Einstellung relativ zur ersten Führungsschiene feststellbar ist.

The present invention relates to a drawer slide comprising:

• a first guide rail and at least one second guide rail, which are mounted so that they can be displaced relative to one another,
• at least one support element arranged on a first guide rail for at least temporary support on the second guide rail,
• wherein the position of the at least one support element relative to the second guide rail can be adjusted by an adjustment device and can be fixed relative to the first guide rail after the adjustment has been made.

Furthermore, the invention relates to a method for mounting a support element on a drawer pull-out guide.

Drawer slides according to the preamble of claim 1 are in DE 20 2010 009 163 U1 , in the DE 28 09 930 A1 , in the DE 30 15 351 A1 and in the DE 20 2012 010 757 U1 shown.

Drawer pull-out guides usually have a first guide rail (carcass rail) to be fastened to a furniture body and at least one second guide rail (drawer rail) mounted so as to be displaceable relative to the first guide rail. To realize a full extension of the drawer relative to a piece of furniture, an additional third guide rail (middle rail) can optionally be provided, which between the first and second guide rail is slidably mounted.

To reduce tilting play between the guide rails, at least one support element, for example in the form of a rotatable support roller, is usually attached to a first guide rail so that the second guide rail can be supported on the support element of the first guide rail. This support element is also particularly advantageous when at least one carriage with load-transmitting rolling elements is slidably mounted between the guide rails. This carriage acts as a pivot bearing between the guide rails, with the guide rail to be supported being mounted as a kind of double-armed lever so that it can tilt about an axis formed by the carriage. When the front end area of the guide rail to be supported is loaded (particularly by a heavy front panel of the drawer), the front end area of the guide rail is lowered, while the rear end area of the guide rail is raised by the pivot bearing formed by the carriage.

Due to component tolerances of the guide rails and/or the support element, the precise arrangement of the support element when manufacturing the drawer pull-out guide is associated with a number of challenges. If the play between the support element and the guide rail to be supported on it is too small, the friction is increased and, in an extreme case, can lead to a jamming between the support element and the guide rail. However, if the game is too big dimensioned, the guide rails can be tilted relative to one another in an open position of the drawer pull-out guide beyond a tolerable extent. Eventually, this can result in the front end portion of the drawer sinking down when assembled, giving the drawer slide an inferior impression.

The object of the present invention is to specify a drawer slide of the type mentioned at the outset while avoiding the disadvantages discussed above.

According to the invention, this is achieved by the features of patent claim 1 . Further advantageous embodiments of the invention are defined in the dependent claims.

According to the invention, it is provided that the at least one support element can be adjusted in a height direction by the adjustment device in the assembly position of the drawer pull-out guide.

Thus, an adjustment device for adjusting the play between the support element and the guide rail to be supported thereon is provided, so that the support element can be positioned in a predetermined position relative to the second guide rail and can be fixed relative to the first guide rail.

The guide rails can be moved relative to one another between a closed position and an open position, with the at least one support element having some play relative to the second guide rail at least in the closed position has and the game can be adjusted by the adjustment device. The drawer pull-out guide is in the closed position when the guide rails essentially overlap completely.

According to one exemplary embodiment, provision can be made for the play in the open position of the guide rails to be smaller than in the closed position and/or for the at least one support element to rest against the second guide rail without play in the open position of the guide rails.

According to a preferred embodiment, the adjustment can be made in such a way that the support element is first brought into abutment with the guide rail to be supported in a first direction of movement (reference value with play equal to zero), then the support element is moved in a second direction of movement opposite to the first direction of movement by a predetermined Measure (e.g. 0.1 mm) moved back again, so that the support element is positioned with a predetermined play relative to the guide rail to be supported. Alternatively, the adjustment can also be made by measuring. The at least one support element is arranged stationary relative to the first guide rail during normal operation of the drawer pull-out guide (i.e. when the guide rails move relative to one another).

Several options can be provided for fixing the position of the support element after the adjustment has been made. Either the adjustment device is sufficiently self-locking on its own so that the position of the Support element always remains in the preset position. Alternatively or additionally, it can be provided that the position of the at least one support element can be fixed, preferably releasably, by a securing element after the setting has been made and/or that the position of the at least one support element can be fixed permanently after the setting has been made, preferably by welding, gluing or by stagger.

The support element can be movably mounted along a guide to adjust the play, the support element being non-positively lockable (e.g. by a clamping screw) relative to the first guide rail after the adjustment has been made along the guide.

Alternatively, it can be provided that the adjustment device has at least one movably mounted adjustment element, the position of the at least one support element being adjustable by actuating the adjustment element. The setting element can, for example, be rotatably mounted, with the position of the support element being adjustable by rotating the setting element. For this purpose, the adjustment element can have a receiving device for a tool, preferably a screwdriver, the position of the support element being adjustable by rotating the receiving device using the tool.

The adjustment element can have a rotatably mounted eccentric or a rotatably mounted worm wheel. The worm wheel can, as already known, with a be provided with a spiral guide track, wherein a toothing connected to the support element engages in the spiral guide track of the worm wheel.

According to one embodiment, it can be provided that the second guide rail has a side bar and a cross bar connected to the side bar, wherein the at least one support element can be supported on an underside of the cross bar of the second guide rail in the installed position of the drawer pull-out guide. In addition, the support element can be moved along the transverse web of the second guide rail when the guide rails move relative to one another. The transverse web of the second guide rail can be flat over the entire length.

The support element can be designed, for example, as a rotatably mounted support roller. In a mounting position of the drawer pull-out guide on the furniture body, the support roller can be mounted so as to be rotatable about a horizontally running axis. Instead of a support roller, however, an adjustable bearing block can also be provided to support the second guide rail.

According to a further exemplary embodiment, it can be provided that the at least one support element is arranged on the rear end region of the first guide rail.

• Anbringen des Abstützelementes an der ersten Führungsschiene der Schubladenausziehführung,
• Einstellen des Abstützelementes in einer vorbestimmten Lage relativ zur zweiten Führungsschiene mittels der Einstellvorrichtung, und
• Feststellen des Abstützelementes relativ zur ersten Führungsschiene.

The method according to the invention for mounting a support element on a drawer slide is characterized by the following steps:

• attaching the support element to the first guide rail of the drawer slide,
• setting the support element in a predetermined position relative to the second guide rail by means of the setting device, and
• Fixing the support element relative to the first guide rail.

When carrying out the method, it can be provided that the support element is moved in a first direction of movement to set the predetermined position until the support element strikes the second guide rail and is moved back in a second direction of movement counter to the first direction of movement until the predetermined position is reached.

Fig. 1

zeigt eine perspektivische Darstellung eines Möbels mit einem Möbelkorpus und relativ dazu verfahrbar gelagerten Schubladen,

Fig. 2a, 2b

zeigen die Schubladenausziehführung in einem perspektivischen Querschnitt sowie eine vergrößerte Detaildarstellung hierzu,

Fig. 3a-3c

zeigen die Schubladenausziehführung in einem perspektivischen Querschnitt sowie zwei Detaildarstellungen mit unterschiedlicher Höhenlage des Abstützelementes,

Fig. 4a, 4b

zeigen den hinteren Endbereich der Schubladenausziehführung in einer Explosionsansicht sowie eine vergrößerte Detaildarstellung hierzu,

Fig. 5a-5c

zeigen ein weiteres Ausführungsbeispiel der Erfindung mit mehreren in Höhenrichtung voneinander beabstandeten Öffnungen zur Lagerung des Abstützelementes,

Fig. 6a-6c

zeigen ein weiteres Ausführungsbeispiel der Erfindung mit einem drehbar gelagerten Schneckenrad zur Einstellung des Spiels zwischen dem Abstützelement und der zweiten Führungsschiene.

Further details and advantages of the present invention result from the following description of the figures:

1

shows a perspective representation of a piece of furniture with a furniture body and drawers mounted so as to be movable relative thereto,

Figures 2a, 2b

show the drawer pull-out guide in a perspective cross-section and an enlarged detailed view of it,

Figures 3a-3c

show the drawer pull-out guide in a perspective cross-section and two detailed views with the support element at different heights,

Figures 4a, 4b

show the rear end area of the drawer slide in one Exploded view and an enlarged detail view,

Figures 5a-5c

show a further exemplary embodiment of the invention with a plurality of openings spaced apart from one another in the height direction for mounting the support element,

Figures 6a-6c

show a further embodiment of the invention with a rotatably mounted worm wheel for adjusting the play between the support element and the second guide rail.

1 shows a piece of furniture 1 with a cabinet-like furniture body 2, with drawers 3 being mounted so as to be movable relative to the furniture body 2 via drawer pull-out guides 4. The drawers 3 have a front panel 5 , a drawer bottom 6 , drawer side walls 7 and a rear wall 8 . The drawer pull-out guides 4 comprise at least two guide rails 10, 11, 12 that can be moved relative to one another. In the exemplary embodiment shown, a first guide rail 10 (drawer rail) is connected or is to be connected to the drawer side wall 7, a second guide rail 11 (middle rail) is between the first guide rail 10 and a on the furniture body 2 to be attached third guide rail 12 (body rail) slidably mounted. The third guide rail 12 has fastening sections 9a and 9b, through which the drawer pull-out guide 4 can be mounted on the furniture body 2 .

Figure 2a shows the drawer pull-out guide 4 in a perspective section. At the back end of the first A hook 13 is arranged on the guide rail 10 and, when the drawer 3 is in the assembled state on the drawer pull-out guide 4, engages in a corresponding recess in the rear wall 8 or the drawer side wall 7 and thus the rear end region of the drawer 3 in a direction running transversely to the longitudinal direction (L). stabilized. Between the first and second guide rails 10, 11 is a (not visible here) first carriage 18 ( 3c ) with load-transmitting rolling elements 18a, with a movement of the first carriage 18 by a gear wheel 15 rotatably mounted on the second guide rail 11 being synchronized with a movement of a second carriage 19 ( Figure 3a ) can be synchronized, which is slidably mounted between the third guide rail 12 (body rail) and the second guide rail 11 (middle rail). The gear wheel 15 meshes on the one hand with a first rack of the first carriage 18 and on the other hand with a second rack 14 of the second carriage 19. At least one support element 17 for supporting the second guide rail 11 is arranged on the rear end region of the first guide rail 10. To adjust the position of the support element 17, an adjustment device 16 is provided with a movably mounted adjustment element 16a, the position of the support element 17 being adjustable by actuating the adjustment element 16a. The second guide rail 11 has a side bar 11a and a crossbar 11b connected to the side bar 11a, the support element 17 being able to be supported on an underside of the crossbar 11b of the second guide rail 11. The support element 17 is in the figure shown as a support roller formed, which is preferably rotatably mounted about an axis running horizontally in the installed position.

Figure 2b shows the in Figure 2a circled area in an enlarged view, wherein the play (X) between the support element 17 and the crossbar 11b of the second guide rail 11 can be seen. In the shown Figure 2b If the play (X) is too large, the second guide rail 11 can be tilted excessively about a horizontal axis running transversely to the longitudinal direction (L). By rotating the adjusting element 16a of the adjusting device 16, the clearance (X) can be adjusted to a predetermined level. For this purpose, the adjusting element 16a is rotated in a first direction of rotation until the support element 17 contacts the underside of the crossbar 11b (play equals zero), then the adjusting element 16a is rotated in a second direction of rotation opposite to the first direction of rotation until the play (X) is one has a predetermined value. This can be done automatically in the factory by an assembly robot. After the clearance (X) has been set, the support element 17 is fixed in its position, for example welded, glued or wobbled.

Figure 3a shows the drawer pull-out guide 4 in a perspective cross-section, with at least one first carriage 18 having load-transmitting rolling elements 18a being slidably mounted between the first guide rail 10 and the second guide rail 11 . Between the third guide rail 12 and the second guide rail 11, at least one second carriage 19 with load-transmitting rolling elements 19a is also displaceably mounted. The cross bar 11b of the second guide rail 11 can be in the Substantially extend over the entire length of the second guide rail 11.

Figure 3b shows the in Figure 3a circled area in an enlarged view. The support element 17 was based on the position according to Figure 2b rotated by actuating the adjusting element 16a until the supporting element 17 rests against the second guide rail 11, preferably on the underside of the transverse web 11b of the second guide rail 11. The play (X) is thus equal to zero and forms a reference value for the subsequent adjustment.

For the correct adjustment of the clearance (X), the adjustment element 16a is adjusted according to the position of the support element 17 according to FIG Figure 3b adjusted in the opposite direction until the play (X) between the support element 17 and the second guide rail 11 has a predetermined value (e.g. 0.1 mm). This position is in 3c shown. The relative position of the support element 17 is either held in a self-locking manner, can be fixed by an additional securing element and/or can be fixed permanently.

Figure 4a shows the rear end area of the drawer extension guide 4 in an exploded view, wherein the first carriage 18, which is movably mounted between the first and second guide rails 10, 11, with the load-transmitting rolling elements 18a and a retraction device 20 for retracting the first guide rail 10 into a closed end position can be seen. The feed device 20 can be one, preferably include hydraulic damping device, through which the spring-assisted retraction movement of the first guide rail 10 can be braked.

Figure 4b shows the in Figure 4a circled area in an enlarged view. The first guide rail 10 has a U-profile with two spaced-apart side legs 10a and 10b, which are connected to one another by a transverse leg 10c. The support element 17 is accommodated between the two side legs 10a, 10b of the first guide rail 10 in the installed position. The support element 17 can be fixed via the adjusting element 16a in the form of the eccentric on the side leg 10a facing the fastening section 9b. The adjusting element 16a has a pin 21 which engages in a corresponding opening 22 of the first guide rail 10 in the mounted position. After the position of the support element 17 has been adjusted 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 wobbling.

Figure 5a shows a perspective view of the first guide rail 10 according to a further exemplary embodiment of the invention. Figure 5b shows the in Figure 5a framed area in an enlarged view. In this exemplary embodiment, the first guide rail 10 has two or more openings 22 spaced apart from one another in the height direction (H) for selectively receiving the support element 17 . The support element 17 can be inserted directly into one of the openings 22 via a pin 21, so that the support element 17 can assume different heights to adjust the play (X). Alternatively can Also in this embodiment, the setting is additionally carried out via a movably mounted setting element 16a. The play (X) between the support element 17 and the second guide rail 11 can thus be adjusted in such a way that the pin 21 of the adjustment element 16a or of the support element 17 is selectively introduced into one of the openings 22 spaced apart from one another in the height direction (H) and then fixed. Figure 5c 12 is a side view of the rear end portion of the first guide rail 10 according to this embodiment. The openings 22 can be offset from one another by 0.2 mm, for example, in the height direction (H).

Figures 6a-6c show a further embodiment of the invention, wherein the adjusting device 16 for adjusting the clearance (X) between the support element 17 and the second guide rail 11 has an adjusting element 16a in the form of a rotatably mounted worm wheel. Figure 6b shows the in Figure 6a circled area in an enlarged view. The adjusting element 16a has a receiving device 23 for receiving a tool, preferably a screwdriver, the position of the support element 17 being adjustable by rotating the receiving device 23 using the tool. On the rear side of the setting wheel 16a in the form of the worm wheel, a helical guideway is formed, as is known per se, which interacts with a toothing 24 connected to the support element 17 . The toothing 24 is in Figure 6c recognizable, wherein the rotatably mounted adjustment element 16a is hidden. The adjusting element 16a in the form of the worm wheel forms, together with the toothing 24, a drive with a high level of self-locking, so that the position of the support element 17 after adjustment and when the drawer 3 is loaded does not change.

Claims (15)

Drawer slide (4) comprising: - a first guide rail (10) and at least one second guide rail (11), which are mounted so that they can be displaced relative to one another, - at least one support element (17) arranged on a first guide rail (10) for at least temporary support on the second guide rail (11), - the position of the at least one support element (17) relative to the second guide rail (11) being adjustable by an adjustment device (16) and being fixable relative to the first guide rail (10) after the adjustment has been made, characterized in that the at least one support element (17) can be adjusted in a height direction (H) by the adjustment device (16) in the installed position of the drawer pull-out guide (4). Drawer pull-out guide according to Claim 1, characterized in that the guide rails (10, 11) can be moved relative to one another between a closed position and an open position, the at least one support element (17) having play (X) relative to the second guide rail (11) at least in the closed position. has and the game (X) can be adjusted by the adjusting device (16). Drawer pull-out guide according to Claim 2, characterized in that the play (X) is smaller in the open position than in the closed position and/or that the at least one support element (17) bears without play on the second guide rail (11) when the guide rails (10, 11) are in the open position. Drawer pull-out guide according to one of Claims 1 to 3, characterized in that the adjusting device (16) is designed to be self-locking. Drawer pull-out guide according to one of Claims 1 to 4, characterized in that the setting device (16) has at least one movably mounted setting element (16a), the position of the at least one support element (17) being adjustable by actuating the setting element (16a). Drawer pull-out guide according to Claim 5, characterized in that the setting element (16a) is rotatably mounted, the position of the supporting element (17) being adjustable by rotating the setting element (16a). Drawer extension guide according to Claim 5 or 6, characterized in that the setting element (16a) has a rotatably mounted eccentric or a rotatably mounted worm wheel and/or interacts with teeth (24) connected to the support element (17). Drawer pull-out guide according to one of Claims 1 to 7, characterized in that the first guide rail (10) has two or more in the vertical direction (H) having spaced apart openings (22) for selectively receiving the support member (17). Drawer pull-out guide according to one of Claims 1 to 8, characterized in that the position of the at least one support element (17) can be fixed by a securing element after the adjustment has been made. Drawer pull-out guide according to one of Claims 1 to 9, characterized in that the position of the at least one support element (17) can be permanently fixed after the setting has been made, preferably by welding, by gluing or by wobbling. Drawer pull-out guide according to one of Claims 1 to 10, characterized in that the second guide rail (11) has a side bar (11a) and a transverse bar (11b) connected to the side bar (11a), the at least one support element (17) being in the installed position of the drawer pull-out guide (4) can be supported on an underside of the transverse web (11b) of the second guide rail (11), it being preferably provided that the transverse web (11b) is flat over the entire length. Drawer pull-out guide according to one of Claims 1 to 11, characterized in that the at least one support element (17) - Is designed as a rotatably mounted support roller, and / or - Is arranged at the rear end area of the first guide rail (10). Drawer extension guide according to one of Claims 1 to 12, characterized in that at least one carriage (18) with load-transmitting rolling elements (18a) is arranged between the first guide rail (10) and the second guide rail (11). Method for mounting a support element (17) on a drawer pull-out guide (4) according to one of Claims 1 to 13, characterized by the following steps: - attaching the support element (17) to the first guide rail (10) of the drawer extension guide (4), - Setting the support element (17) in a predetermined position relative to the second guide rail (11) by means of the setting device (16), and - Fixing the support element (17) relative to the first guide rail (10). Method according to Claim 14, characterized in that the support element (17) is moved in a first direction of movement to set the predetermined position until the support element (17) strikes the second guide rail (11) and in a second direction of movement counter to the first direction of movement is moved back until the predetermined position is reached.

Images