WO2019001954A1

WO2019001954A1 - Pullout system and method for opening and closing a push element

Info

Publication number: WO2019001954A1
Application number: PCT/EP2018/065596
Authority: WO
Inventors: Steffen Jaekel; Janine Mertens; Dirk OEPPING; Ingo RAVE
Original assignee: Paul Hettich Gmbh & Co. Kg
Priority date: 2017-06-28
Filing date: 2018-06-13
Publication date: 2019-01-03
Also published as: DE102017114364A1

Abstract

The invention relates to a pullout system comprising a pullout guide (2) with multiple rails (20, 21, 22) which can be moved relative to one another and a pivot bearing (5) for pivoting the pullout guide (2) on a body, wherein an adjustment mechanism (6, 16) is provided, by means of which the pivot position of the pullout guide (2) on the pivot bearing (5) can be adjusted depending on the weight acting on the pullout guide (2) and depending on the position of the rails (20, 21, 22) of the pullout guide (2). The invention also relates to a method for opening and closing a push element.

Description

Pull-out system and method for opening and closing a

push element

The present invention relates to a drawer system with a drawer slide with a plurality of relatively movable rails and a pivot bearing for pivoting the drawer slide on a body, and a method for opening and closing a pusher.

DE 20 2010 014 328 U1 discloses a drawer pull-out guide with a plurality of rails, in which catwalks for load-transmitting rolling elements are at least partially curved. Due to the curvature of the catwalks, a drawer in the open position should lower less than a planned horizontal line. It is disadvantageous that, depending on the loading state of the drawer, a greater or smaller reduction takes place, so that, depending on the loading condition and curvature of the catwalk, a lowered or raised position of the drawer is present in an open position.

It is therefore an object of the present invention to provide a drawer system and a method for opening and closing a pushing element, by means of which an improved opening movement of a pushing element is achieved.

This object is achieved with a drawer system having the features of claim 1 and a method having the features of claim 10.

In the pull-out system according to the invention, a pull-out guide with a plurality of rails movable relative to one another is supported on a pivot bearing, and the pivoting position of the pull-out guide on the pull-out guide can depend on the weight force acting on the pull-out guide and on the position of the rails of the pull-out guide Swivel bearings are adjusted. As a result, it is possible for the pull-out guide to be lifted during an opening movement in order to compensate for a lowering of the pull-out guide. If with a corresponding load the pullout guide and a drawer located thereon is lowered by a height of a few millimeters, can be adjusted via the adjustment mechanism and the pivot bearing a tilt adjustment of Pull-out guide are made, which substantially compensates for this lowering movement. Thereby, the opening behavior of the extraction system is improved, and it is possible to move several pushers simultaneously in an open position, which can then be arranged in a predetermined position next to each other or on top of each other to achieve a uniform and uniform Fugenmaß between the pushers. By the substantially horizontal method of a running rail of the pullout guide the handling or the actuating force is improved when opening and closing a pusher, wherein the substantially horizontal direction of movement is achieved due to the adjustment mechanism for different loading conditions of the pusher element and thus different weight forces on the pullout guide.

In accordance with a preferred embodiment, when a runner of the drawer slide is moved in the opening direction, a guide rail of the drawer guide arranged in the body is pivoted, in particular for lifting the running rail. The degree of pivotal movement is dependent on the weight acting on the pullout guide, in particular on the pusher.

Preferably, the pivot bearing is arranged in the extension direction of the pullout guide in front of the adjusting mechanism. By means of the adjusting mechanism, a section of the drawer guide arranged at a distance from the pivot bearing can then be lowered during an opening movement. Thus, the adjustment mechanism does not have to work against the weight force, but can use the weight force to effect a tilt adjustment of the pullout guide.

The adjusting mechanism may have a cam guide with at least two guide elements which open out in relation to one another, for example guide grooves, an actuating element being brought into engagement with one of the guide elements depending on the weight and the position of the drawer guide. At a higher weight, the actuator is brought into engagement with another guide member than at a lower weight, so that, depending on the weight, the cam guide determines the inclination angle of the pullout guide.

The adjusting mechanism may further comprise a rotary part, by means of which a height adjustment depending on the action on the pullout guide- the weight force is feasible. By turning the rotary member can then be effected a tilt adjustment, which, depending on the weight, is designed.

The extension system is preferably used for drawers, which are movably mounted on a piece of furniture or household appliance. It can be used on opposite sides of a drawer each an extract system with load-dependent and position-dependent tilt adjustment.

In a method according to the invention for opening and closing a push element, the push element is first moved from a closed position in the opening direction. During the movement of the thrust element in the opening direction, an inclination angle of a guide rail of the drawer guide arranged in the body is made relative to the body by an adjusting mechanism depending on the position of the thrust element and the weight force acting on the drawer guide. The thrust element can thereby be extended substantially horizontally in the opening direction. Subsequently, the pusher is again moved from an open position to the closed position, wherein the inclination angle is returned to the initial position via the adjusting mechanism.

The invention will be explained in more detail with reference to several embodiments with reference to the accompanying drawings. Show it:

Figures 1 and 2 are two schematic views of a thrust element on an extension system in different positions;

Figure 3 is a schematic view of a pusher in a closed position;

Figure 4 is a schematic view of a thrust element of

Figure 3 in an open position;

FIGS. 5A and 5B show two views of an adjustment system for an extension system;

Figures 6A and 6B show two views of a pullout guide with adjustment in the retracted and extended state FIGS. 7A to 7E show several detailed views of the adjusting mechanism of FIG

Figure 5; and FIG. 8 shows a diagram for lowering a drawer as a function of the opening position.

FIG. 1 schematically shows an extension system 1 which has a pullout guide 2 on which a drawer 3 acting as a pushing element is movably held. The drawer 3 has a front panel 4 and is mounted in a body, in particular a furniture body or a household appliance. The pullout guide 2 is adjacent to the front panel 4, so in the extension direction front, held on a pivot bearing 5, where the pullout guide 2 is rotatable or pivotable to make a tilt adjustment relative to the carcass. Relative to the extension direction, an adjusting mechanism 6 is provided on the pullout guide 2 at the rear, by means of which a tilt adjustment of the pullout guide 2 can be made. In Figure 2, the drawer 3 is shown in an open position. The pullout guide 2 has been moved to an extended position, and a movable running rail 20 is thus located substantially in front of a body and is supported on a guide rail 22 via a middle rail 21. It can also extract guides 2 are used with only two rails or more than three rails. In the opening movement, the inclination of the pullout guide 2 was changed, which is exaggerated in Figure 2 in order to better explain the adjustment can. The adjusting mechanism 6 has lowered the guide rail 22 when the drawer 3 is opened, so that the guide rail 22 has been pivoted on the pivot bearing 5 and the running rail 20 with the drawer 3 has been moved slightly upwards with its front end. At the same time, the running rail 20 was moved in the opening direction, so that a lowering of the drawer 3 could be prevented or reduced via the inclination adjustment of the drawer slide 2. Such a lowering in an opening movement otherwise inevitably occurs due to tolerances and a weight load. In the present case, the reduction could be reduced or compensated, the size of the tilt adjustment to the adjustment mechanism 6 is load-dependent. In Figure 3, the extension system of Figures 1 and 2 is shown in modified form, in which it is shown in more detail how the adjusting mechanism 6 is driven in the sequence of movements of the individual rail parts. Here, the linear movement of the drawer 3 is converted via suitable transmission means in a rotational movement of a component of the adjusting mechanism 6. As a transmission means is used in this embodiment, a transmission gear in the form of a rack and pinion arrangement.

Also conceivable are other transmission means, such as belt drives, chain drives, cable drives or the like. At the schematically shown pullout guide 2 is located on the movable with the drawer 3 running rail 20, an activator 1 0, which is engageable with a driver, not shown, a self-closing engagement. The self-closing is performed on the guide rail 22. Thereby, the drawer 3 can be brought into engagement with the driver of the self-closing shortly before reaching the closed position to move the drawer 3 in the closing direction in the closed position. Such a self-retraction has for this purpose a corresponding energy storage and optionally also a damping element or a braking element. At the driver or other movable part of the self-closing, such as the piston rod, in this case a first transmission element 9 is fixed in the form of a rack, wherein the rack is guided longitudinally movably within the housing of the self-closing. The teeth of the rack are engaged with a fixed to the guide rail 22 second transmission element 8 in the form of a gear, which serves as an element for power deflection. This in turn is coupled to a third transmission element 7 in the form of a further rack, which is guided longitudinally movable on the guide rail 22. When moving the driver of the self-closing mechanism 8 and 9 and the transmission element designed as a rack is thus driven via the transmission elements 8 to make a tilt adjustment of the pullout guide 2 on the adjusting mechanism 6. In FIG. 3, the drawer 3 is shown in a closed position, whereas in FIG. 4 the drawer 3 has been moved to an open position. Due to the movement of the drawer 3, the activator 1 0 is moved relative to the housing of the self-closing.

The coupled to the driver of Selbsteinzuges, designed as a rack transmission element 9 fixed rack transmits the force to the transmission element 8, which in turn initiates the force in the transmission element 7, depending on the load and on the Auszugsfüh- tion 2 acting weight forces through the drawer 3 make a tilt adjustment to the adjustment mechanism 6. At high load, the inclination of the pullout guide is adjusted more than at low load.

An example of such an adjustment mechanism 6 is shown in Figures 5 and 6. The adjusting mechanism 6 comprises a plate 1 2, which can be fixed via screws 1 3 to a arranged on the guide rail 22 bracket or directly to the guide rail 22. Alternatively, the locking mechanism 6 can also be arranged on the furniture body. At the

Plate 1 2, a rotary member 14 is rotatably mounted, the outside has a toothing 1 5, which is in engagement with the transmission element 7. In the rotary member 14, a biased by a spring 40 actuator 1 6 is provided, which is rotatably fixed in the housing of the adjusting mechanism 6 is set, the top of the control element 1 6 is positively and / or non-positively fixed to the guide rail 22. In this case, the spring 40 is supported on one side on the plate 1 2 and on the opposite side of the actuator 1 6 in a recording. On an outer periphery of the adjusting element 1 6 is a cam guide 1 7 with at least two guide rails 1 8a, 18b, in which fixed to the rotary member 14 arranged pins 42 are guided. Depending on the loading of the drawer 3, depending on the respective position of the drawer 3 relative to the furniture body, a different control of the guideways 18a, 18b and thus a linear vertical adjustment of the actuating element 16 relative to the rotary member 14 can be achieved. This then ultimately results in a different inclination adjustment of the drawer 3.

The actuator 1 6 is shown in detail in Figures 7A to 7E. On the adjusting element 1 6 is located on the outer circumference a cam guide 1 7 with a lower guide rail 1 8a and an upper guide rail 18b, which are separated at a junction by a web 1 9. Here, the lower guide track 18a is largely aligned horizontally, while the upper guide track 1 8b is provided with a defined pitch. In a closed position, the guide rail 22 rests on the Ver adjusting mechanism 6 and pushes the actuator 1 6 down against the force of the spring 40. If the drawer 3 is now moved in the opening direction, the rod-shaped transmission element 7 (see Figure 4) is moved and rotates the rotary member 14. As a result, the pins 42 move in the cam guide 17. If the drawer 3 is heavily loaded, is at the opening process the spring 40 is compressed and the pins 22 are guided in the guide track 18b provided with a slope, whereby the actuating element 1 6 and thus the guide rail 22 and the pullout guide 2 and thus the drawer 3 is slightly pivoted about the pivot bearing 5. Similarly, the guide rail 22 and the pullout guide 2 and thus the drawer 3 during the closing process by the positive guidance of the pins 42 in the guideway 18b raised by the retraction of the actuating element 1 6, so that in the rear end position of the drawer 3, a horizontal alignment is achieved. On the other hand, in the case of a less heavily loaded drawer 3 during the opening process, the spring 40 is not compressed, as a result of which the pins 42 are forcibly guided in the horizontally oriented guide track 18a. Thus, in a less heavily loaded drawer 3 learns the guide rail 22 and the drawer slide 2 and thus the drawer 3 no tilt adjustment about the pivot bearing. 5

It is of course also possible, instead of the two guideways 18a and 18b to provide more than just two guideways on the actuator 16 to make, depending on the loading state of the drawer, a finer tilt adjustment.

FIG. 8 shows a diagram of the lowering of a drawer 3 as a function of the opening position. When the drawer 3 is empty or less heavily loaded, a horizontal extension of the drawer 3 via the pull-out guide 2 can initially take place. The further the drawer 3 to the maximum opening position, which is plotted here in percent, appliance, the greater is the lowering of the no or less heavily loaded drawer 3. If the drawer 3 is loaded, the drawer falls 3 already from the beginning of the opening movement and reached in the experiments carried out in the maximum opening position, a reduction of 6 mm.

If an adjusting mechanism 6 is used, the inclination adjustment can be omitted in the unloaded or less heavily loaded state, so that the drawer 3, as indicated in the line "empty", can be moved. On the other hand, if the drawer 3 is loaded, the drawer 3 can be raised by means of the adjusting mechanism 6 as a function of the opening position and the loading, as shown by the curve "loaded with mechanism". In the maximum opening position is the loaded

Drawer moved about 3 mm up instead of 6 mm down. As a result, the lowering of the drawer 3 can be compensated with loading become. Depending on the adjustment mechanism 6, a drawer 3 can be moved substantially horizontally in the opening direction with or without or low load. The lowering values indicated in the diagram of FIG. 8 are only an example of other possible values.

LIST OF REFERENCE NUMBERS

1 pull-out system

2 pullout guide

3 drawer

4 front panel

5 swivel bearings

6 adjustment mechanism

7 transmission element

8 transmission element

9 transmission element

10 activator

1 1 adjustment mechanism

12 plate

13 screw

14 rotary part

15 toothing

1 6 control element

17 cornering

18a guideway

18b guideway

19 footbridge

20 track rail

21 middle rail

22 guide rail

40 spring

41 snap ring

42 pen

Claims

claims

1 . Pull-out system with a pullout guide (2) with a plurality of relatively movable rails (20, 21, 22) and a pivot bearing (5) for pivoting the pullout guide (2) on a body, characterized by an adjusting mechanism (6, 16) by means of which dependent from the force acting on the pullout guide (2) weight and depending on the position of the rails (20, 21, 22) of the pullout guide (2), the pivot position of the pullout guide (2) on the pivot bearing (5) is adjustable.

2. pull-out system according to claim 1, characterized in that when moving a movable running rail (20) of the pullout guide (2) in the opening direction on the pivot bearing (5) arranged guide rail (22) is pivotable.

3. extract system according to claim 1 or 2, characterized in that the pivot bearing (5) in the extension direction of the pullout guide (2) in front of the adjusting mechanism (6, 16) is arranged.

4. Pull-out system according to one of the preceding claims, characterized in that via the adjusting mechanism (6, 1 6) from the pivot bearing (5) spaced portion of the pullout guide (2) is lowered at an opening movement.

5. pull-out system according to one of the preceding claims, characterized in that the adjusting mechanism (6) has a cam guide (17) with at least two guide elements (18a, 18b) opening into one another and depending on the weight on the pullout guide (2) of one of the guide elements ( 18a, 18b) can be brought into engagement with an actuating element (42).

6. pull-out system according to one of the preceding claims, characterized in that the adjusting mechanism (6) has an actuating element (1 6), by means of which a height adjustment of a guide rail (22) depending on the on the pullout guide (2) acting weight force is feasible.

7. extract system according to one of the preceding claims, characterized in that the motive force of the largely horizontal linear movement of the drawer (3) via transmission means (7, 8, 9) is converted into a largely vertical linear movement of the control element (16).

8. extract system according to one of the preceding claims, characterized

in that a thrust element, in particular a drawer, is held on a running rail (20) of the drawer guide (2).

9. furniture or household appliance with a pull-out system according to one of

previous claims.

10. A method for opening and closing a pusher element (3) which is movably held on at least one pullout guide (2), comprising the following steps:

- Moving a thrust element (3) from a closed position in the opening direction;

- Adjusting an inclination angle of a guide rail (22) of the pullout guide (2) relative to a body by an adjusting mechanism (6, 1 6) depending on the position of the thrust element (3) and on the pullout guide (2) acting weight force;

- Moving the pusher from an open position to the closed position, and

- Reset the inclination angle of the pullout guide (2) in the starting position during the closing movement.

1 1. A method according to claim 10, characterized in that the thrust element during an opening movement on the adjusting mechanism (6, 1 6) is raised depending on the force acting on the pullout guide (2) weight.