EP3291702B1 - Piece of furniture and method for fixing a drawer - Google Patents

Description

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

The EP 1 285 604 discloses a device for fixing a drawer to a rail of a drawer slide, in which a base part attachable to the drawer and a locking element which can be fixed to the drawer guide are provided. For a compensation of the distance of the guide rails of the pullout guides, the latching element is displaceable relative to the base part in certain tolerances. Due to the design of the locking element and the base part as a plastic part, the holding forces are limited, especially in heavy drawers, which are moved in the extension direction to the maximum extension position. In addition, it is desirable to position the drawer as accurately 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 pullout guide in which a holding part and a counter-holding part are connected to each other via an elastic piece of material. This leads to a reduction of the position accuracy in the longitudinal direction. In the lateral direction of the drawer can be fixed via a locking device on the rail. In the standardized impact tests for drawers in which the drawers are pulled out with loading, however, only relatively low holding forces of such a latching connection arise.

The DE 10 2011 000 724 A1 shows a workshop trolley, in which a drawer is locked in a closed position on a carcass. The locking mechanism comprises a web-shaped holder, which is lockable for fixing the drawer to a clamp 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 furniture and a method for fixing a drawer, in which high holding forces can be provided.

This object is achieved with a piece of furniture having the features of claim 1 and a method with the features of claim 17.

The furniture according to the invention comprises a device for fixing a drawer with a clamping mechanism with a receptacle into which a web-shaped holding part can be inserted, wherein on the receptacle a self-locking clamping lever is provided, by means of which the holding part is frictionally secured against withdrawal. This can be done on the self-locking clamping lever a particularly stable setting of the thrust element, especially with regard to impact tests, in which the drawer is moved in the loaded state in the maximum open position. The self-locking clamping lever of the clamping mechanism ensures that the retaining part is held in such a way that it can not be pulled further out of the receptacle in the opening direction. An insertion of the holding part in the receptacle of the clamping mechanism, however, is relatively simple, since only low frictional forces must be overcome, so that the assembly can be easily made. In addition, a continuous fixation of the holding part can be effected by a frictional connection of the clamping lever, which allows a particularly accurate positioning of the thrust element in the opening direction.

A frictional or non-positive 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 in a frictional fixation of the holding part, which is independent of stop elements.

The web-shaped holding part can have a substantially flat surface for the frictional connection, which is in regions in contact with a contact surface on the clamping lever. The holding part may be strip-shaped, angular, U-shaped, made as a hollow profile or other geometries, in particular of metal, wherein for the frictional connection, a portion of a profile can be used. The holding part may also be formed by a portion of the drawer guide profile.

Preferably, the clamping lever is rotatably mounted about a rotation axis. In this case, the clamping lever may be biased in a locked position, in particular via one or more springs or via a force accumulator.

According to a preferred embodiment of the invention means for unlocking the clamping lever are provided, by means of which the frictional connection of the clamping lever of the holding part is releasable. To unlock the clamping lever, a linearly movable slide or a button can be provided. In this case, the clamping lever may be formed as a two-armed lever, wherein a first arm bears with a contact surface on the holding part and a second arm on the means for unlocking the clamping lever is movable. By adjusting the length of the lever arms corresponding power transmission ratios can be effected, wherein the contact surface has to be moved only slightly away from the holding part in order to unlock the clamping lever.

Preferably, the clamping lever is located on a linear contact surface on the holding part, which is parallel to the axis of rotation of the clamping lever. The contact surface may be edge-shaped, rounded or formed with another investment contour to provide high clamping forces. The high clamping forces are generated in this clamping system by a force multiplication by the lever effect.

The clamping mechanism is preferably infinitely fixed to the holding part, so that the drawer is placed during assembly on the pullout guide and pushed slightly and as soon as the clamping mechanism is fixed to the holding part, the fitter has the security that the drawer is not accidentally when pulling out the drawer slide can slide in the opening direction. Rather, the clamping mechanism is activated as soon as the holding part is guided in the receptacle on the clamping lever over. A subsequent further insertion of the drawer for continuous adjustment is possible without any problems.

For a particularly stable attachment of the drawer, the holding part and the voltage applied to the holding part contact surface of the clamping lever may be made of metal, for example of a steel sheet. Unlike metal, plastic flows, so that only lower forces can be absorbed by the clamping mechanism, the use of plastics, especially reinforced plastics, is quite possible.

Preferably, the axis of rotation of the clamping lever is arranged in the insertion direction in front of a contact surface of the clamping lever on the holding part. As a result, a self-locking is effected, wherein in the mounted position, an angle between the contact surface of the clamping lever 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. Due to the angular position of the clamping lever, the freewheeling direction and the locking direction is defined in the clamping system. If the holding part is charged in the reverse direction, a self-reinforcing effect occurs, so that with increased loading of the holding part in the reverse direction, the clamping force also increases.

For a simple assembly, the receptacle may be formed on a fastening part, on which the clamping lever is rotatably mounted. Then the clamping lever can be pre-assembled with the receptacle as a unit on the rail or the drawer. Preferably, the fastening part is displaceably mounted on or in a housing. Thereby, the fastening part can be moved relative to the housing via means for lateral adjustment, so that an exact alignment of the drawer is also possible perpendicular to the direction of movement of the drawer guide in the horizontal direction. It can also be provided a height adjustment and / or a depth adjustment.

Figur 1

eine perspektivische Ansicht eines Möbels mit einem Schubkasten;

Figur 2

eine Unteransicht des Schubkastens der Figur 1;

Figur 3

eine perspektivische Detaildarstellung der erfindungsgemäßen Vorrichtung zum Festlegen des Schubkastens;

Figur 4

eine perspektivische Ansicht der Vorrichtung der Figur 3 in der montierten Position;

Figur 5

eine perspektivische Ansicht der Vorrichtung ohne Schubkasten vor der Montage;

Figur 6

eine perspektivische Ansicht der Vorrichtung ohne Gehäuse bei der Montage;

Figuren 7 bis 9

mehrere Ansichten der Vorrichtung zum Festlegen eines Schubkastens ohne Halteteil;

Figur 10

eine Ansicht einer modifizierten Vorrichtung zum Festlegen eines Schubkastens ohne Seitenverstellung;

Figur 11

eine perspektivische Explosionsdarstellung einer modifizierten Vorrichtung ohne Halteteil, und

Figuren 12A bis 12C

mehrere Ansichten der Vorrichtung der Figur 11.

The invention will be explained in more detail below with reference to an embodiment with reference to the accompanying drawings. Show it:

FIG. 1

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

FIG. 2

a bottom view of the drawer of FIG. 1 ;

FIG. 3

a detailed perspective view of the device according to the invention for securing the drawer;

FIG. 4

a perspective view of the device of FIG. 3 in the assembled position;

FIG. 5

a perspective view of the device without drawer before assembly;

FIG. 6

a perspective view of the device without housing during assembly;

FIGS. 7 to 9

several views of the device for fixing a drawer without holding part;

FIG. 10

a view of a modified device for setting a drawer without side adjustment;

FIG. 11

an exploded perspective view of a modified device without holding part, and

FIGS. 12A to 12C

several views of the device FIG. 11 ,

A piece of furniture 1 comprises a furniture body 2, on whose side walls one or more pullout guides 3 are fixed, each having at least one movable rail 5. A drawer 4 is movably held on two such rails 5, for which purpose on each rail 5, a device 10 or 10 'is provided for fixing the drawer 4 to the rail 5, as is apparent from the bottom view of FIG. 2 is recognizable. On a bottom 7 of the drawer 4, a first device 10 with lateral adjustment for fixing the drawer 4 and a second device 10 'without lateral adjustment for fixing the drawer to a rail 5 is fixed. Each device 10 and 10 'in this case comprises a housing 15 which is fixed to a front panel 6 and / or the bottom 7 of the drawer 4.

In the detail view of the FIG. 3 the device 10 is shown during assembly. The housing 15 can be fixed by fastening means 16 on the underside of the drawer 4, wherein a receptacle 20 is provided for inserting a holding part 12. The holding part 12 is held on the rail 5 of the pullout guide 3. In this case, the web-shaped holding part 12 may optionally be fixed to the rail 5 via an integrally formed tab 9, for example by welding, or be fixed on the rail 5 via further components or the holding part 12 is a part of the rail profile of the rail 5. At the tab 9 is provided a device 11 for depth adjustment, which has a rotationally fixed threaded bolt 14, on which a knurled nut 13 is rotatably mounted, but linearly immovable in the axial direction. As a result, by turning the knurled nut 13, the threaded bolt 14 can be moved in the longitudinal direction of the rail 5 and thus move a stop which predetermines the insertion depth of the holding part 12 in the receptacle 20. Optionally, such a device 11 for depth adjustment can also be dispensed with.

For assembly, the drawer 4 is placed on the two rails 5 of the two drawer guides 3 and inserted into the closed position. In this case, a web-shaped holding part 12 is in each case inserted into the receptacle 20 of the device 10 or 10 'on opposite sides and fixed by a clamping mechanism which secures the holding part 12 by clamping and frictionally locking against pulling out.

In FIG. 4 the assembled position of the drawer 4 is shown. The holding part 12 has been inserted into the receptacle 20 and secured there against withdrawal. Via a device 18 for lateral adjustment, the lateral joint pattern can now be adjusted. The lateral adjustment device 18 comprises a knurled nut 19 which, by rotating, causes the housing 15 to be moved laterally relative to the receptacle 20 in a horizontal direction to effect lateral adjustment.

In FIG. 5 the device 10 is shown without holding part 12. The device 10 comprises a slider 17 or button which serves to unlock the clamping mechanism. As a result, the drawer 4 can be disassembled again after assembly upon actuation of the slide 17.

In FIG. 6 the device 10 is shown without the housing 15, but with the holding part 12, which is fixed in the receptacle 20 by clamping.

The clamping mechanism comprises a clamping lever 25, which is mounted rotatably about an axis of rotation 24 on a fastening part 23. The fastening part 23 is plate-shaped and forms a side wall 22 of the receptacle 20, which is arranged opposite the clamping lever 25. The holding member 12 is fixed by friction between a contact surface 26 of the clamping lever 25 and the side wall 22 and secured against being pulled out. For this purpose, the axis of rotation 24 is seen in the insertion direction of the holding part 12 is arranged in front of the contact surface 26, so that the holding part 12 when inserted into the receptacle 20 initially passes a plane perpendicular to the insertion direction in which the axis of rotation 24 is arranged before the holding part 12, the contact surface 26 touched. As a result, the clamping lever 25 is formed self-locking and tensile forces on the holding part 12 of the clamping lever 25 is pressed with the contact surface 26 even stronger against the holding part 12.

The clamping lever 25 is designed as a two-armed lever, wherein formed on an arm, the contact surface 26 for clamping fixing the holding part 12 is, and on a second arm 27 means for unlocking the clamping lever 25 attack. The clamping lever 25 is angularly formed and biased by an integrally formed spring 30 in the clamping position. The spring 30 is designed as a leaf spring and supported on the housing 15. The means for unlocking comprise a bolt 28 which is slidably formed in a wedge-shaped gap 29 between the arm 27 and the fastening part 23. When the pin 28 is displaced toward the end of the arm 27, the arm 27 is moved by the wedge-shaped formation of the gap 29 and the clamping lever 25 rotates so that the contact surface 26 is disengaged from the holding part 12. Thereby, the holding part 12 can be easily pulled out after turning the clamping lever 25. The bolt 28 is guided along a side wall of the fastening part 23.

The clamping lever 25 is made of a bent metal sheet, which surrounds a portion of the plate-shaped fastening part 23 in a U-shape. The bottom of the U is formed on the contact surface 26, so that a line-shaped contact surface 26 bears against the holding part 12.

In FIG. 7 an exploded view of the device 10 with the housing 15 is shown. On the housing 15, a slot-shaped receptacle 33 is provided, on which the fastening part 23 is held displaceably with the clamping lever 25. A head section on the axis of rotation 24 is guided in a groove-shaped guide 34. The fastening part 23 can be guided over further or other surfaces in the housing 15. Further, the slider 17 is shown, which is designed as a cap-shaped part and holds between two arms 31, the pin 28. The bolt 28 can be moved via a movement of the slider 17 along the fastening part 23 at the wedge-shaped gap 29. The slider 17 is biased by a spring 32 into a starting position, in which the bolt 28, the clamping lever 25 is not unlocked. Only by moving the slider 17 against the force of the spring 32 unlocking the clamping lever 25 is effected.

Furthermore, the device 18 is shown for lateral adjustment, in which a threaded bolt 40 engages in a threaded bore 41. On the threaded bolt 40, a knurled nut 19 is fixed, wherein an edge of the knurled nut engages in a U-shaped receptacle 35 on the fastening part 23. By turning the knurled nut 19 can thus the fastening part 23 relative to the housing 15 are displaced in the longitudinal direction of the threaded bolt 40, ie in a plane parallel to the front panel 6 of the drawer 4th

In the FIGS. 8A to 8C the device 10 with the housing 15 is shown in detail. The plate-shaped attachment member 23 is slidably mounted within the receptacle 33 of the housing 15 and in turn stores even the clamping lever 25 via the rotation axis 24. The slider 17 surrounds the housing 15 U-shaped and is linearly guided to move the clamping lever 25 for a Unlock unlocking.

In FIG. 9 the device 10 is shown in an unlocked position in which the slider 17 has been pushed onto the housing 15. As a result, the pin 28 moves the clamping lever 25, so that the contact surface 26 moves slightly away from the opposite side wall 22, so that a holding part 12, which is arranged between the side wall 22 and the contact surface 26, can be pulled out of the receptacle 20. The movement of the contact surface 26 may be in a range between 0.02 to 4 mm, in particular 0.4 mm to 2 mm.

In FIG. 10 the device 10 'is shown, which is designed like the device 10, but without the device 18 for lateral adjustment. In this respect, the knurled nut 19 and the threaded bolt 40 are missing. Incidentally, the device 10 'can be of the same design or mirror-symmetrical to the device 10. The attachment member 23 may be movably mounted in the housing 15, so that the device 10 'forms a floating bearing, while on the opposite side a fixed bearing is provided which positions the drawer 4 within the furniture body 2 in the horizontal lateral direction.

In FIG. 11 a modified device 10 "is shown, by means of which a in FIG. 2 Shown web-shaped holding member 12 is clamped fixable. The device 10 "comprises a housing 15 ', on which an outer plate 50 and an inner plate 52 are arranged, in the plates 50 and 52 a slot-shaped receptacle 20 is recessed, in which on one side a side wall 22 is arranged and on the As a result, the web-shaped holding part 12 can be frictionally held between a contact surface 26 on the clamping lever 25 and the side wall 22. On the plates 50 and 52, further elongated holes 53 are formed, which are used to guide a Bolzens 56 serving with a Slider 51 is connected. The slider 51 is biased by a spring 54 to a starting position, wherein the spring 54 is fixed on the one hand on the slider 51 and on the other hand with the pin 55 on the plate 50.

The clamping lever 25 comprises an actuating arm 57 which can cooperate with the slider 51.

On the plate-shaped fastening part 23 ', a receptacle 31 is further provided for inserting a spring 30, which is designed as a leaf spring and acts on the clamping lever 25 to bias it in the locked position.

In the FIGS. 12A to 12C The slider 51 can be moved along the slots 53 against the force of the spring 54, the slider then acting on the arm 57 of the clamping lever to rotate it clockwise, thus a holding part 12, which is frictionally fixed between the side wall 22 and the contact 26. It is also possible to provide other means for unlocking the clamping lever 25.

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

LIST OF REFERENCE NUMBERS

1

Furniture

2

furniture body

3

pull-out guide

4

drawer

5

rail

6

front panel

7

ground

9

flap

10, 10 '

contraption

11

Facility

12

holding part

13

knurled nut

14

threaded bolt

15

casing

16

fastener

17

pusher

18

Facility

19

knurled nut

20

admission

22

Side wall

23

attachment portion

24

axis of rotation

25

clamping lever

26

contact area

27

poor

28

bolt

29

gap

30

feather

31

poor

32

feather

33

admission

34

guide

35

admission

40

threaded bolt

41

threaded hole

50

plate

51

pusher

52

plate

53

slots

54

feather

57

actuating arm

Claims (17)

1. A piece of furniture (1) comprising a drawer (4), a pull-out guide (3) and a device for fixing the drawer (4) to a moveable rail (5) of the pull-out guide (3), whereby the piece of furniture comprises a furniture body (2), whereby the pull-out guide is fixed to the side walls of the furniture body (2), whereby the device comprises a clamping mechanism with a receptacle (20), into which a web-shaped holding part (12) can be inserted, wherein a self-locking clamping lever (25) is provided on the receptacle (20), by means of which the holding part (12) is secured in a frictionally engaged manner against pulling out.
2. A piece of furniture according to claim 1, characterized in that the clamping lever (25) is rotatably mounted about a pivot (24).
3. A piece of furniture according to claim 1 or 2, characterized in that the clamping lever (25) is pretensioned into the locked position.
4. A piece of furniture according to one of the preceding claims, characterized in that means (28) for unlocking the clamping lever (25) are provided, by means of which the frictionally engaged clamping connection of the clamping lever (25) can be released from the holding part (12).
5. A piece of furniture according to claim 4, characterized in that a linearly movable slide (17) is provided for unlocking the clamping lever (25).
6. A piece of furniture according to one of the preceding claims, characterized in that the clamping lever (25) is designed as a two-armed lever and a first arm rests with a contact surface (26) against the holding part (12), and the second arm is movable via means (28) for unlocking the clamping lever (25).
7. A piece of furniture according to one of the preceding claims 2 to 6, characterized in that the clamping lever (25) rests via a linear contact surface (26) against the holding part (12), which extends parallel to the pivot (24) of the clamping lever (25).
8. 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.
9. A piece of furniture according to one of the preceding claims, characterized in that the contact surface of the clamping lever (23) resting against the holding part (12) as well as the holding part (12) are made of metal.
10. A piece of furniture according to one of the preceding claims 2 to 9, characterized in that the pivot (24) of the clamping lever (25) is arranged in the insertion direction in front of a contact surface (26) of the clamping lever (25) on the holding part (12).
11. A piece of furniture according to one of the preceding claims, characterized in that at least one adjusting device is provided, which moves the drawer (4) relative to the pull-out guide (3) in at least one spatial direction.
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 lever (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 (19, 40) for lateral adjustment.
15. 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-side region of the drawer (4).
16. A method for fixing a drawer (4) to a rail (5) of a pull-out guide (3), which is fixed to a side wall of a furniture body (2), comprising a clamping mechanism with a receptacle (20), into which a web-shaped holding part (12) can be inserted, wherein a self-locking clamping lever (25) is provided on the receptacle (20), by means of which the holding part (12) is secured in a frictionally engaged manner against pulling out, characterized in that the holding part (12), when loaded in the pull-out direction, also increases the generated clamping force of the clamping lever (25) with rising load.
17. A method according to claim 16, characterized in that the clamping force of the clamping lever (25) is released by the actuation of a button or slide (17).

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