EP3801132A1

EP3801132A1 - Drawer pull-out guide

Info

Publication number: EP3801132A1
Application number: EP19725842.9A
Authority: EP
Inventors: Marc MEUSBURGER; Pascal BERCHTOLD
Original assignee: Julius Blum GmbH
Current assignee: Julius Blum GmbH
Priority date: 2018-06-05
Filing date: 2019-05-07
Publication date: 2021-04-14
Anticipated expiration: 2039-05-07
Also published as: AT521333A1; CN112236053B; ES2940060T3; US11889919B2; JP2021528128A; TWI703944B; AT521333B1; CN112236053A; JP7090746B2; EP4162838A1; EP3801132B1; EP4162838B1; WO2019232560A1; TW202002853A; US20210076819A1

Abstract

The invention relates to a 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 slidable relative to one another, - at least one support element (17) arranged on a first guide rail (10) for at least temporarily being supported on 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 means of an adjusting device (16) and after having been adjusted can be fixed relative to the first guide rail (10), wherein the at least one support element (17) can be adjusted in a vertical direction (H) by the adjusting device (16) in the mounted position of the drawer pull-out guide (4).

Description

drawer

The present invention relates to a drawer extension guide comprising:

a first guide rail and at least one second guide rail, which are mounted displaceably 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 is adjustable relative to the second guide rail by an adjustment and lockable after adjustment relative to the first guide rail.

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

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

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

To reduce a tilting play between the guide rails, usually at least one support element, for example in the form of a rotatable support roller, is fastened 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 particularly advantageous if 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, wherein the guide rail to be supported is mounted tiltable as a double-armed lever about an axis formed by the carriage. Upon loading of the front end portion of the guide rail to be supported (in particular by a heavy front panel of the drawer), the front end portion of the guide rail is lowered, while the rear end portion of the guide rail is lifted 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 in the manufacture of the drawer pull-out associated with some challenges. If the clearance between the support element and the guide rail to be supported thereon is too small, the friction is increased and, in an extreme case, can lead to jamming between the support element and the guide rail. However, if the game dimensioned too large, so the guide rails in an open position of the drawer extension over a tolerable level addition are tilted relative to each other. This can eventually lead to the front end portion of the drawer sinking downwards in the assembled state, giving an inferior impression of the drawer extension guide.

Object of the present invention is to provide a drawer extension of the type mentioned above while avoiding the disadvantages discussed above.

This is achieved by the features of 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 is adjustable in a height direction by the adjustment device in the mounting position of the drawer extension guide.

Thus, an adjustment device for adjusting the clearance between the support element and the guide rail to be supported thereon is provided so that the support element can be positioned relative to the second guide rail in a predetermined position and relative to the first guide rail. The guide rails are movable relative to one another between a closed position and an open position, wherein the at least one support element has a play for the second guide rail at least in the closed position and the play can be adjusted by the adjusting device. The closed position of the drawer pull-out guide is present when the guide rails substantially completely overlap.

According to one embodiment, it can be provided that the clearance in the open position of the guide rails is smaller than in the closed position and / or that the at least one support element rests without play on the second guide rail in the open position of the guide rails.

According to a preferred embodiment, the setting can be made such 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 clearance equal to zero), then the support element in a second, opposite to the first movement direction by a predetermined Measure (for example, 0.1 mm) moved back so that the support member is positioned with a predetermined clearance relative to the support rail to be supported. Alternatively, the adjustment can also be done by measuring. The at least one support element is stationary in a normal operation of the drawer extension guide (i.e., in a relative movement of the guide rails relative to each other) relative to the first guide rail.

To fix the position of the support element after adjustment several possibilities can be provided. Either the adjustment alone is sufficiently self-locking, so that the position of the support element always remains in the pre-set position. Alternatively or additionally, it may be provided that the position of the at least one support element after adjustment by a securing element, preferably releasably, is detectable and / or that the position of the at least one support element is permanently determined after adjustment, preferably by welding, gluing or by Vertaumeln.

The support member may be movably mounted to adjust the game along a guide, wherein the support element after adjustment along the guide non-positively (for example by a clamping screw) relative to the first guide rail is detected.

Alternatively it can be provided that the adjusting device has at least one movably mounted adjusting element, wherein the position of the at least one supporting element is adjustable by an actuation of the adjusting element. The adjusting element may for example be rotatably mounted, wherein the position of the support element is adjustable by rotation of the adjusting element. For this purpose, the adjusting element may have a receiving device for a tool, preferably a screwdriver, the position of the supporting element being adjustable by rotation of the receiving device by means of the tool.

The adjusting element may have a rotatably mounted eccentric or a rotatably mounted worm wheel. As already known, the worm wheel can be provided with a helical guideway, wherein a toothing connected to the support element engages in the helical guideway of the worm wheel.

According to one embodiment, it may be provided that the second guide rail has a side web and a crosspiece connected to the side web, wherein the at least one support element in the mounting position of the drawer extension guide can be supported on an underside of the transverse web of the second guide rail. In addition, during a relative movement of the guide rails, the support element can be moved relative to one another along the transverse web of the second guide rail. The transverse web of the second guide rail can be flat over the entire length.

The support element may be formed, for example, as a rotatably mounted support roller. The support roller may be rotatably mounted in a mounting position of the drawer extension guide on the furniture body about a horizontally extending axis. Instead of a support roller but can also be provided an adjustable bearing block for supporting the second guide rail. According to a further embodiment it can be provided that the at least one support element is arranged at the rear end region of the first guide rail.

The method according to the invention for mounting a support element on a drawer pull-out guide is characterized by the following steps:

Attaching the support element to the first guide rail of the drawer extension guide,

- Setting the support element in a predetermined position relative to the second guide rail by means of the adjusting device, and

- Detecting the support element relative to the first guide rail.

In carrying out the method can be provided that the support member for adjusting the predetermined position in a first direction of movement is moved until the support member abuts the second guide rail and in a second direction of movement against the first direction of movement is moved back until the predetermined position is reached.

Further details and advantages of the present invention will become apparent from the following description of the figures:

Fig. 1 shows a perspective view of a piece of furniture with a

Furniture carcass and drawers mounted relative thereto,

Fig. 2a, 2b show the drawer extension in a perspective

Cross-section and an enlarged detail illustration of this,

Fig. 3a-3c show the drawer pull-out in a perspective

Cross section and two detailed views with different height of the support element,

4a, 4b show the rear end region of the drawer pull-out guide in an exploded view, as well as an enlarged detailed representation thereof,

5a-5c show a further embodiment of the invention with a plurality of spaced-apart in the height direction openings for supporting the support element, 6a-6c show a further embodiment of the invention with a rotatably mounted worm wheel for adjusting the clearance between the support element and the second guide rail.

Fig. 1 shows a piece of furniture 1 with a cabinet-shaped furniture body 2, wherein drawers 3 are movably mounted on Schubladenausziehführungen 4 relative to the furniture body 2. The drawers 3 have a front panel 5, a drawer bottom 6, drawer side walls 7 and a rear wall 8. In the embodiment shown, a first guide rail 10 (drawer rail) is connected or connected to the drawer side wall 7, a second guide rail 1 1 (middle rail) is located between the first guide rail 10 and one on the furniture body 2 to be fastened third guide rail 12 (carcass rail) slidably mounted. The third guide rail 12 has attachment portions 9a and 9b, through which the drawer pull-out guide 4 is to be mounted on the furniture body 2.

Fig. 2a shows the drawer extension guide 4 in a perspective section. At the rear end of the first guide rail 10, a hook 13 is arranged, which engages in a mounted state of the drawer 3 on the drawer extension guide 4 in a corresponding recess of the rear wall 8 or the drawer side wall 7 and thus the rear end portion of the drawer 3 in a direction transverse to the longitudinal direction (L) extending direction stabilized. Between the first and second guide rail 10, 1 1 (not visible here) first carriage 18 (Fig. 3c) slidably mounted with load-transmitting rolling elements 18a, wherein a movement of the first carriage 18 by a rotatably mounted on the second guide rail 1 1 gear 15 with a movement of a second carriage 19 (Fig. 3a) is synchronized, which is slidably mounted between the third guide rail 12 (carcass rail) and the second guide rail 1 1 (middle rail). The gear 15 meshes with a first rack of the first carriage 18 on the one hand, and with a second rack 14 of the second carriage 19 on the other hand. At least one support element 17 for supporting the second guide rail 1 1 is arranged at the rear end region of the first guide rail 10. To adjust the position of the support element 17 is an adjustment 16 with a movably mounted adjustment 16a provided, wherein the position of the support element 17 is adjustable by an actuation of the adjusting element 16a. The second guide rail 1 1 has a side web 1 1 a and connected to the side web 1 1 a crosspiece 1 1 b, wherein the support element 17 on an underside of the crossbar 1 1 b of the second guide rail 1 1 can be supported. The support element 17 is formed in the figure shown as a support roller, which is preferably rotatably mounted about an axis horizontally extending in the mounting position.

Fig. 2b shows the circled in Fig. 2a area in an enlarged view, the game (X) between the support member 17 and the cross bar 1 1 b of the second guide rail 1 1 can be seen. In the illustrated figure 2b, the clearance (X) is too large, so that the second guide rail 1 1 is tiltable excessively about a horizontal axis extending transversely to the longitudinal direction (L). By rotation of the adjusting member 16a of the adjusting device 16, the game (X) can be adjusted to a predetermined level. For this purpose, the adjusting element 16a is rotated as long as in a first direction of rotation until the support member 17, the bottom of the crosspiece 1 1 b contacted (game equal to zero), then the adjusting member 16a is rotated in a first rotational direction opposite second direction of rotation until the game (X ) has a predetermined value. This can be done automatically in the factory by a placement robot. After the setting of the game (X), the support member 17 is fixed in position, for example, welded, glued or tumbled.

3a shows the drawer pull-out guide 4 in a perspective cross section, wherein at least one first carriage 18 with load-transmitting rolling bodies 18a is displaceably mounted between the first guide rail 10 and the second guide rail 11. Between the third guide rail 12 and the second guide rail 1 1 is also at least a second carriage 19 with load-transmitting rolling elements 19 a slidably mounted. The crossbar 1 1 b of the second guide rail 1 1 may extend substantially over the entire length of the second guide rail 1 1.

Fig. 3b shows the circled in Fig. 3a area in an enlarged view. Starting from the position according to FIG. 2b, the support element 17 has been rotated by an actuation of the adjusting element 16a until the supporting element 17 stops the second guide rail 1 1, preferably at the bottom of the cross bar 1 1 b of the second guide rail 1 1, is present. The game (X) is thus equal to zero and forms a reference value for the subsequent adjustment.

For the correct adjustment of the clearance (X), the adjusting element 16a is adjusted from the position of the supporting element 17 according to FIG. 3b in the opposite direction until the play (X) between the supporting element 17 and the second guide rail 11 has a predetermined value (for example 0, 1 mm). This position is shown in Fig. 3c. The relative position of the support element 17 is either held self-locking, can be fixed by an additional securing element and / or can be permanently fixed.

4a shows the rear end region of the drawer pull-out guide 4 in an exploded view, the first carriage 18 displaceably mounted between the first and second guide rails 10, 11 with the load-transmitting rolling elements 18a and a draw-in device 20 for drawing in the first guide rail 10 into a closed end position are recognizable. The collection device 20 may comprise a, preferably hydraulic, damping device, by which the spring-assisted retraction movement of the first guide rail 10 can be braked.

4b shows the area circled in FIG. 4a in an enlarged view. The first guide rail 10 has a U-profile with two spaced side legs 10a and 10b, which are interconnected by a transverse leg 10c. The support element 17 is received in the mounting position between the two side legs 10 a, 10 b of the first guide rail 10. The support element 17 can be fixed via the adjusting element 16a in the form of the eccentric to the side leg 10a facing the fastening section 9b. The adjusting element 16a has a pin 21, which engages in the mounting position in a corresponding opening 22 of the first guide rail 10. After the adjustment of the position of the support element 17 relative to the first guide rail 10, the pin 21 of the adjusting element 16a with the first guide rail 10, for example by tumbling, permanently fixed. 5a shows a perspective view of the first guide rail 10 according to a further exemplary embodiment of the invention. Fig. 5b shows the framed in Fig. 5a area in an enlarged view. In this exemplary embodiment, the first guide rail 10 has two or more openings 22, which are spaced apart from one another in the direction of fleas (H), for selectively receiving the support element 17. The support element 17 can be introduced via a pin 21 either directly into one of the openings 22, so that the support element 17 can assume different altitudes for adapting the game (X). Alternatively, in this embodiment, too, the adjustment can be made via a movably mounted adjusting element 16a. The play (X) between the support element 17 and the second guide rail 1 1 can thus be adjusted by the pin 21 of the adjusting 16a or the support member 17 selectively inserted into one of the height direction (H) spaced apart openings 22 and then 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 may be arranged offset in the height direction (H), for example, 0.2 mm from each other.

Fig. 6a-6c show a further embodiment of the invention, wherein the adjustment device 16 for adjusting the clearance (X) between the support element 17 and the second guide rail 1 1 has an adjustment 16a in the form of a rotatably mounted worm wheel. Fig. 6b shows the circled in Fig. 6a area in an enlarged view. The adjusting element 16a has a receiving device 23 for receiving a tool, preferably a screwdriver, on, wherein the position of the support element 17 by rotation of the receiving device 23 by means of the tool is adjustable. As is known per se, a spiral-shaped guideway is formed on the rear side of the setting wheel 16a in the form of the worm wheel, which cooperates with a toothing 24 connected to the support element 17. The toothing 24 can be seen in Fig. 6c, wherein the rotatably mounted adjustment member 16a is hidden. The adjusting member 16a in the form of the worm wheel forms together with the teeth 24 a drive with high self-locking, so that the position of the support element 17 does not change after adjustment and loading of the drawer 3.

Claims

claims

A drawer pull-out guide (4) comprising:

a first guide rail (10) and at least one second guide rail (11), which are mounted displaceably 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),

- wherein the position of the at least one support element (17) is adjustable relative to the second guide rail (11) by an adjusting device (16) and after adjustment relative to the first guide rail (10),

characterized in that the at least one support element (17) by the adjusting device (16) in the mounting position of the drawer extension guide (4) in a height direction (H) is adjustable.

2. drawer pull-out according to claim 1, characterized in that the guide rails (10, 11) between a closed position and an open position are movable relative to each other, wherein the at least one support element (17) at least in the closed position a game (X) to the second guide rail ( 11) and the play (X) is adjustable by the adjusting device (16).

3. drawer pull-out according to claim 2, characterized in that the clearance (X) in the open position is smaller than in the closed position and / or that the at least one support element (17) in the open position of the guide rails (10, 11) on the second guide rail (11) without play.

4. drawer pull-out according to one of claims 1 to 3, characterized in that the adjusting device (16) is self-locking.

5. drawer pull-out according to one of claims 1 to 4, characterized in that the adjusting device (16) has at least one movably mounted adjusting element (16a), wherein the position of the at least one Supporting element (17) by an actuation of the adjusting element (16a) is adjustable.

6. drawer pull-out according to claim 5, characterized in that the adjusting element (16a) is rotatably mounted, wherein by rotation of the adjusting element (16a), the position of the support element (17) is adjustable.

7. drawer extension according to claim 5 or 6, characterized in that the adjusting element (16a) has a rotatably mounted eccentric or a rotatably mounted worm wheel.

8. drawer pull-out according to one of claims 5 to 7, characterized in that the adjusting element (16a) cooperates with a with the support element (17) connected toothing (24).

9. drawer pull-out according to one of claims 1 to 8, characterized in that the first guide rail (10) has two or more in the height direction (H) spaced apart openings (22) for selectively receiving the support element (17).

10. drawer pull-out according to one of claims 1 to 9, characterized in that the position of the at least one support element (17) after adjustment by a securing element can be determined.

11. drawer pull-out according to one of claims 1 to 10, characterized in that the position of the at least one support element (17) after setting is permanently detectable, preferably by welding, by gluing or by Verwaumeln.

12. drawer pull-out according to one of claims 1 to 11, characterized in that the second guide rail (11) has a side web (11 a) and one with the side web (11 a) connected to the transverse web (11 b), wherein the at least one support element (17 ) in the mounting position of the drawer extension guide (4) on an underside of the transverse web (11 b) of the second guide rail (11) can be supported, wherein it is preferably provided that the transverse web (11 b) is flat over the entire length.

13. drawer pull-out according to one of claims 1 to 12, characterized in that the at least one support element (17) is designed as a rotatably mounted support roller.

14. drawer pull-out according to one of claims 1 to 13, characterized in that the at least one support element (17) at the rear

End region of the first guide rail (10) is arranged.

15. drawer pull-out according to one of claims 1 to 14, characterized in that between the first guide rail (10) and the second guide rail (11) at least one carriage (18) with load-transmitting rolling elements (18a) is arranged.

16. A method for mounting a support element (17) on a drawer extension guide (4) according to one of claims 1 to 15, 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 adjusting device (16), and

- Detecting the support element (17) relative to the first guide rail (10).

17. The method according to claim 16, characterized in that the support element (17) for adjusting the predetermined position in a first direction of movement is moved until the support element (17) abuts the second guide rail (11) and in a second direction of movement against the the first direction of movement is moved back until the predetermined position is reached.