EP3291703B1 - Device and method for fixing a push element - Google Patents

Description

The present invention relates to a piece of furniture according to the preamble of claim 1 and a method for fixing a push element.

The EP 1 285 604 discloses a device for fixing a drawer to a rail of a pull-out guide, in which a base part which can be fastened to the drawer and a locking element which can be fixed on the pull-out guide are provided. To compensate for the distance between the guide rails of the pull-out guides, the latching element can be displaced within certain tolerances relative to the base part. Due to the design of the locking element and the base part as a plastic part, the holding forces are limited, especially with heavy drawers that are moved in the pull-out direction to the maximum pull-out position. In addition, it is desirable to position the drawer as precisely as possible within the furniture body in order to obtain an attractive joint pattern.

The WO 2009/149479 discloses a device for releasably coupling a drawer with a pull-out guide, in which a holding part and a counter-holding part are connected to one another via an elastic piece of material. This leads to a reduction in the positional accuracy in the longitudinal direction. In the lateral direction, the drawer can be fixed to the rail using a locking device. In the standardized stop tests for drawers, in which the drawers are pulled out with a load, however, there are only comparatively low holding forces of such a latching connection.

The DE 10 2011 000 724 A1 shows a workshop trolley, in which a drawer can be locked in a closed position on a body. The locking mechanism comprises a web-shaped holder which can be inserted into a clamping eccentric.

In the DE 20 2004 001 791 U1 a damping device for braking movable furniture drawers is shown.

It is therefore an object of the present invention to provide a piece of furniture and a method for fixing a push element in which high holding forces can be provided.

This object is achieved with a piece of furniture with the features of claim 1 and a method with the features of claim 19.

The device according to the invention for fixing a thrust element comprises a clamping mechanism with a receptacle into which a web-shaped holding part can be inserted, a self-locking clamping element being provided on the receptacle, by means of which the holding part is frictionally secured against being pulled out. As a result, the push element can be fixed in a particularly stable manner via the self-locking clamping element, in particular also with regard to impact tests, in which the drawer is moved into the maximum open position when loaded. The self-locking clamping element of the clamping mechanism ensures that the holding part is held in such a way that it cannot be pulled further out of the receptacle in the opening direction. On the other hand, inserting the holding part into the receptacle of the clamping mechanism is comparatively simple, since only slight frictional forces have to be overcome, so that the assembly can be made simple. In addition, a stepless fixation of the holding part can be brought about by a frictional connection of the clamping element, which enables particularly precise positioning of the pushing element in the opening direction.

A frictional connection according to the invention differs from a positive connection in that the holding forces are provided by frictional forces and not by positive stop elements such as teeth or stops. As a result, a stepless adjustment can be obtained with a frictional fixation of the holding part, which is independent of stop elements.

The web-shaped holding part can have an essentially flat surface for the frictional connection, which surface is in some areas in contact with a contact surface on the clamping element. The holding part can be made in the form of strips, angles, U-shaped, as a hollow profile or with other geometries, in particular made of metal, wherein a section of a profile can be used for the frictional connection. The holding part can also be formed by a section of the pull-out guide profile.

The clamping element is preferably designed as a clamping lever and rotatably mounted about an axis of rotation. The clamping lever can be biased into a locked position, in particular via one or more springs or via an energy accumulator. It is also possible for the clamping element to have at least one clamping lever which can be moved by bending. Also other clamping elements, such as wedges or clamping elements on curve guides, can be used.

According to a preferred embodiment of the invention, means for unlocking the clamping element are provided, by means of which the frictional connection of the clamping element can be detached from the holding part. A linearly movable slide can be provided to unlock the clamping element. Alternatively, a pivotable lever can be used to move the clamping element into an unlocked position.

The clamping element preferably lies against the holding part via a linear contact surface which runs parallel to the axis of rotation of the clamping element. The contact surface can be edge-shaped, rounded or designed with a different contact contour in order to provide high clamping forces. With this clamping system, the high clamping forces are generated by multiplying the force by the lever effect.

The holding part is infinitely fixable on the clamping mechanism, so that the drawer is placed on the pull-out guide during assembly and pushed in slightly, the holding part is fixed on the clamping mechanism, the fitter has the certainty that the drawer will not be accidentally pulled out of the pull-out guide can slip in the opening direction. Rather, the clamping mechanism is activated as soon as the holding part is guided past the clamping element in the receptacle. Subsequent further insertion of the drawer for stepless adjustment is easily possible.

For a particularly stable fastening of the drawer, the holding part and the contact surface of the clamping element which is in contact with the holding part can be made of metal, for example of a steel sheet. Unlike metal, plastic flows so that only minor forces can be absorbed via the clamping mechanism, whereby the use of plastics, in particular reinforced plastics, is entirely possible.

The axis of rotation of the clamping element is preferably arranged in front of a contact surface of the clamping element on the holding part in the insertion direction. This causes self-locking, wherein in the assembled position an angle between the contact surface of the clamping element to the axis of rotation at an angle to the longitudinal direction of the holding part between 55 and 89 °, in particular 70 ° to 85 °, can be arranged. The angular position of the clamping element or clamping lever defines the freewheeling direction and the blocking direction in the clamping system. If the holding part is loaded in the blocking direction, a self-reinforcing effect occurs, so that the clamping force also increases when the holding part is loaded in the blocking direction.

For simple assembly, the receptacle can be formed on a fastening part on which the clamping lever is rotatably mounted. Then the clamping lever can be preassembled as a unit on the rail or drawer. The fastening part is preferably slidably mounted on or in a housing. As a result, the fastening part can be moved relative to the housing by means of lateral adjustment, so that an exact alignment of the drawer is also possible in a horizontal direction perpendicular to the direction of movement of the pull-out guide. A height adjustment and / or a depth adjustment can also be provided.

Figur 1

eine perspektivische Ansicht eines Möbels mit einem Schubkasten;

Figur 2

eine perspektivische Ansicht einer Vorrichtung zum Festlegen eines Schubelementes ohne Schubkasten;

Figur 3

eine perspektivische Explosionsdarstellung der Vorrichtung der Figur 2;

Figur 4

eine Draufsicht auf die Vorrichtung der Figur 2 als Horizontalschnitt

Figur 5

eine Ansicht einer modifizierten Vorrichtung zur Festlegung eines Schubelementes ohne Gehäuse, und

Figur 6

eine Ansicht der Vorrichtung der Figur 5 bei der Entriegelung.

The invention is explained in more detail below on the basis of two exemplary embodiments with reference to the attached drawings. Show it:

Figure 1

a perspective view of a piece of furniture with a drawer;

Figure 2

a perspective view of a device for setting a drawer without drawer;

Figure 3

an exploded perspective view of the device of Figure 2 ;

Figure 4

a plan view of the device of Figure 2 as a horizontal section

Figure 5

a view of a modified device for determining a thrust element without a housing, and

Figure 6

a view of the device of the Figure 5 when unlocking.

A piece of furniture 1 comprises a piece of furniture body 2, on which one or more pull-out guides 3 are fixed to the side walls, the at least one movable guide Have rail 5. A drawer 4 is movably held on two such rails 5, for which purpose a device 10 for fixing the drawer on the rail 5 is provided on each rail 5, as can be seen from the bottom view of FIG Figure 2 is recognizable. On a bottom 7 of the drawer 4, a first device 10 and a second device 10 for fixing the drawer slide are fixed to a rail 5 in each case. Each device 10 comprises a housing 15, which is fixed to a front panel 6 and / or the bottom 7 of the drawer 4. At least one of the devices 10 has a side, height or depth adjustment in order to position the front panel 6 in the horizontal direction perpendicular to the direction of extension.

In the detailed view of the Figures 2 , 3rd and 4th the device 10 with the housing 15 is shown. The housing 15 is fixed by means of fastening means to openings 16 on the underside of the drawer 4, a receptacle 20 being provided for inserting a holding part 12. The holding part 12 is held on the rail 5 of the pull-out guide 3. The web-shaped holding part 12 can optionally be an integrally formed tab 9 on the rail 5, or can be fixed to the rail 5 as at least one further component, or the holding part 12 is part of the rail profile of the rail 5 a device for depth adjustment can be provided in order to set the insertion depth of the holding part 12 into the receptacle 20. Optionally, such a device for depth adjustment can also be dispensed with.

For assembly, the drawer 4 is placed on the two rails 5 of the two pull-out guides 3 and pushed into the closed position. In this case, a web-shaped holding part 12 is inserted into the receptacle 20 of the device 10 on opposite sides and fixed via a clamping mechanism which secures the holding part 12 in a clamping and frictional manner against being pulled out.

In Figure 4 the device 10 is shown during the assembly of the holding part 12, which is inserted into the receptacle on the housing 15. In addition to the holding part 12, a linearly movable web 28 is provided, which is connected to a slide 17, which is biased into a starting position via a spring 32. The spring 32 is supported on the one hand on the slide 17 and on the other hand on a stop 33 on the tab 9.

As in Figure 4 is shown, the web-shaped holding part 12 is inserted into the receptacle 20 for assembly and secured there against being pulled out. For this purpose, a clamping mechanism is provided on the receptacle 20, which has a clamping lever 25 which is rotatably mounted about an axis 24. The clamping lever 25 has a contact surface 26 which can be non-positively placed against a side surface of the holding part 12. On the opposite side, the holding part 12 is supported by a side wall 22 which is formed on a plate-shaped fastening part 23, on which the clamping lever 25 is also rotatably mounted. The clamping lever 25 has an integrally formed spring 30 which bears against a stop 27 in order to bias the clamping lever 25 into the locking position. When inserting the holding part 12, the lever 25 is pivoted against the force of the spring 30.

The clamping lever 25 is made of a bent metal sheet which engages around a section of the plate-shaped fastening part 23 in a U-shape. At the bottom of the U, the contact surface is formed, which rests as a linear contact surface 26 on the holding part 12.

To release the clamping action, the retaining web 28 can be inserted into the receptacle 20 against the force of the spring 32 via the slide 17, as a result of which the clamping lever 25 in Figure 4 is pressed counterclockwise and thus stands out from the holding part 12. In this position, the holding part 12 can then be pulled out of the receptacle 20 without being destroyed.

In Figure 5 A modified device 10 'for fixing a drawer to a rail 5 of a pull-out guide is shown, in which the housing 15 has been hidden. As in the previous exemplary embodiment, a web-shaped holding part 12 is inserted into the receptacle 20 and non-positively fixed there via the clamping lever 25, the means for unlocking not being formed by a linearly displaceable slide 17, but rather by a pivotable lever 17 '. Like the view of the Figure 6 shows, the lever 17 'can be pivoted, thereby moving the clamping lever 25 into an unlocked position. As a result, the holding part 12 can be moved out of the receptacle 20 and the drawer can be released from the pull-out guide 5. The lever 17 'is connected to an unlocking element 28' which moves the clamping lever 25 accordingly.

Otherwise, this exemplary embodiment is designed like the first exemplary embodiment.

In the devices 10, a device 18 for side, height or depth adjustment is provided in order to adapt the joint pattern.

The device for lateral adjustment can have, for example, a knurled nut which engages in a receptacle 35 and, by turning, causes the housing 15 to be moved laterally relative to the receptacle 20 in the horizontal direction.

In the illustrated embodiment, both the clamping lever 25 and the fastening part 23 consist of metal, in particular a steel sheet. As a result, particularly high holding forces can be applied to the likewise metallic holding part 12.

Reference list

1

Furniture

2nd

Furniture body

3rd

Drawer run

4th

Drawer

5

rail

6

Front panel

7

ground

9

Tab

10th

contraption

12th

Holding part

15

casing

16

openings

17th

Slider

17 '

lever

20

admission

22

Side wall

23

Fastener

24th

Axis of rotation

25th

Clamping element

26

Contact area

27

attack

28

Landing stage

28 '

Unlocking element

30th

feather

32

feather

33

attack

35

admission

Claims (19)

1. A piece of furniture comprising a drawer (4), a pullout guide (3) and a device for fixing the drawer (4), to a movable rail (5) of the pull-out guide (3), said item of furniture (1) comprising a furniture body 2) at the side walls of which the pullout guide (3) is fixed, whereby the device comprises a clamping mechanism with a receptacle (20), into which a web-shaped holding part (12) can be inserted, characterized in that a self-locking clamping element (25) is provided on the receptacle (20), by means of which the holding part (12) is secured in a force-locked manner against pulling out, and at least one adjusting device is provided, which adjusts the drawer (4) relative to the pull-out guide (3) in at least one spatial direction.
2. A piece of furniture according to claim 1, characterized in that the clamping element (25) is formed as a clamping lever (25) and is rotatably mounted about a pivot (24).
3. A piece of furniture according to claim 1 or 2, characterized in that the clamping element (25) is pretensioned into the locked position.
4. A piece of furniture according to claim 3, characterized in that the clamping element (25) is pretensioned into the locked position by an integrally formed spring (30).
5. A piece of furniture according to one of the preceding claims, characterized in that means (28) for unlocking the clamping element (25) are provided, by means of which the force-locked connection of the clamping element (25) can be released from the holding part (12).
6. A piece of furniture according to claim 5, characterized in that the means (28, 28') for unlocking the clamping element (25) can be inserted into the receptacle (20) in order to pivot the clamping element (25).
7. A piece of furniture according to claim 6, characterized in that the means (28, 28') for unlocking can be moved by a linearly guided slide (17) or a pivotable lever (17').
8. A piece of furniture according to one of the preceding claims 2 to 7, characterized in that the clamping element (25) rests via a linear contact surface (26) against the holding part (12), which extends parallel to the pivot (24) of the clamping element (25).
9. A piece of furniture according to one of the preceding claims, characterized in that the holding part (12) can be secured in a stepless manner on the clamping mechanism.
10. A piece of furniture according to one of the preceding claims, characterized in that the surface of the clamping element (25) resting against the holding part (12) and the holding part (12) are made of metal.
11. A piece of furniture according to one of the preceding claims 2 to 7, characterized in that the pivot (24) of the clamping element (25) is arranged in the insertion direction in front of a linear contact region (26) of the clamping element (25) on the holding part (12).
12. A piece of furniture according to one of the preceding claims, characterized in that the receptacle (20) is formed on a fastening part (23) on which the clamping element (25) is rotatably mounted.
13. A piece of furniture according to claim 12, characterized in that the fastening part (23) is displaceably mounted on or in a housing (15).
14. A piece of furniture according to claim 13, characterized in that the fastening part (23) is movable relative to the housing (15) via means for lateral adjustment.
15. A piece of furniture according to one of the preceding claims, characterized in that a device for depth adjustment can be provided on the holding part (12) in order to adjust the insertion depth of the holding part (12) into the receptacle (20).
16. A piece of furniture according to one of the preceding claims, characterized in that the clamping element (25) comprises at least one clamping lever which can be moved by bending.
17. A piece of furniture according to one of the preceding claims, characterized in that a fastening part (23) is provided on which the clamping element (25) is arranged indirectly or directly, or the clamping element (25) is formed integrally with the fastening part (23).
18. A piece of furniture according to one of the preceding claims, characterized in that the holding part (12) or the clamping mechanism is arranged on the front region of the drawer (4).
19. A method for fixing a drawer (4) to a rail (5) of a pull-out guide (3), said pullout guide being fixed to the side walls of a furniture body (2), comprising a clamping mechanism with a receptacle (20), into which a webshaped holding part (12) can be inserted, wherein a self-locking clamping element (25) is provided on the receptacle (20), by means of which the holding part (12) is secured in a force-locked manner against pulling out, characterized in that the frictionally engaged connection is terminated by inserting an element between the holding part (12) and the clamping element (25), and the holding part (12) can be separated from the clamping mechanism.

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