EP3291705B1 - Furniture with drawer and method for fixing a drawer - Google Patents

Description

The present invention relates to a piece of furniture 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 locking 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 in the case of heavy drawers which 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 is only a comparatively low holding force 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 device 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 non-positively 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 back 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 non-positive connection of the clamping element, which enables particularly precise positioning of the pushing 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 projections, teeth or stops. As a result, a stepless adjustment which is independent of stop elements can be obtained in the case of a non-positive fixing of the holding part.

For the non-positive connection, the web-shaped holding part can have an essentially flat surface, which is in regions in contact with a surface on the clamping element. The holding part can be strip-shaped, angular, U-shaped, made as a hollow profile or with other geometries, in particular made of metal, wherein only a section of a profile can be used for the non-positive 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 element can be biased in a locked position, in particular via one or more springs or via an energy store. It is also possible to design the clamping element as a clamping wedge or to mount the clamping element displaceably along a curve.

According to a preferred embodiment of the invention, means for unlocking the clamping element are provided, by means of which the non-positive connection of the clamping element can be detached from the holding part. To unlock the clamping element, a pulling element can be provided, by means of which the clamping element can be detached from the holding part. The contact surface of the clamping element only has to be moved slightly away from the holding part in order to admit the holding part freely.

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.

Instead of an axis of rotation on which the clamping element is mounted, the clamping element can also be fastened in such a way that it fulfills the function by bending the clamping element.

The holding part is preferably infinitely fixable on the clamping mechanism, so that the drawer is placed on the pull-out guide during assembly and inserted slightly, the holding part is already fixed on the clamping mechanism, the fitter has the certainty that the drawer will not be accidentally pulled out the drawer slide can slide 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 lever 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 lever is preferably arranged on the holding part in front of a contact surface of the clamping lever in the insertion direction. This results in a self-locking, 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. The angular position of the clamping lever defines the free-wheeling 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 the 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 the 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 Detaildarstellung eines Schubkastens mit der erfindungsgemäßen Vorrichtung zum Festlegen des Schubkastens bei der Montage im unverbundenen Zustand;

Figur 3

eine perspektivische Ansicht der Vorrichtung der Figur 2 ohne Halteteil;

Figur 4

eine perspektivische Explosionsdarstellung der Vorrichtung der Figur 3;

Figuren 5A und 5B

zwei Ansichten der Vorrichtung der Figur 3 in der verriegelten und entriegelten Position;

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

Figure 1

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

Figure 2

a detailed perspective view of a drawer with the device according to the invention for fixing the drawer during assembly in the unconnected state;

Figure 3

a perspective view of the device of Figure 2 without holding part;

Figure 4

an exploded perspective view of the device of Figure 3 ;

Figures 5A and 5B

two views of the device of the Figure 3 in the locked and unlocked position;

A piece of furniture 1 comprises a furniture body 2, on the side walls of which one or more pull-out guides 3 are fixed, each of which has at least one movable rail 5. A drawer 4 is movably held on two such rails 5, a device 10 for fixing the drawer 4 on the rail 5 being provided on each rail 5 for this purpose, as can be seen from the bottom view of FIG Figure 2 is recognizable. A first device 10 with side adjustment for fixing the drawer and a second device 10 without side adjustment for fixing the drawer are fixed to a rail 5 on a bottom 7 of the drawer 4. Each device 10 comprises a housing 15, which is fixed to a front panel 6 and / or the bottom 7 of the drawer 4.

In the detailed view of the Figure 2 the device 10 is shown during assembly. The housing 15 can be fixed via fastening means 16 on the underside of the drawer 4, a receptacle 20 being provided for inserting a web-shaped 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 formed via an integrally formed tab 9 on the rail 5 or can be designed as a separate component which is fixed to the rail 5 or fixed to the rail 5 via further components, or the holding part 12 is part of the rail profile the rail 5. On the bracket 9, a device 11 for depth adjustment is provided, which has a non-rotatable but axially displaceably mounted threaded bolt 14 on which a knurled nut 13 is rotatably 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 specifies the maximum insertion depth of the holding part 12 into 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 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 or 10 'on opposite sides and fixed via a clamping mechanism which clamps and holds the holding part 12 in a frictional manner secures against pulling out. A lateral joint pattern can be adapted via a device 18 for side adjustment. The device 18 for lateral adjustment comprises a knurled nut 19 which, by turning, causes the receptacle 20 to be moved laterally relative to the housing 15 in the horizontal direction in order to carry out a lateral adjustment.

In the Figures 3 and 4 The device 10 is shown, on which a receptacle 20 for receiving the holding part 12 is formed. The device 10 comprises a plate-shaped fastening part 23, on which the clamping lever 25 is rotatably mounted about an axis of rotation 24 and is biased into the locked position by a spring 30. The clamping lever 25 can also be fastened differently or be made in one piece with the fastening plate. If the clamping lever is not rotatably mounted, the clamping lever can perform its function by bending. The clamping lever 25 is here made of a bent sheet metal, which engages around a section of the plate-shaped fastening part 23 in a U-shape. At the bottom of the U, a contact surface 26 is formed, which rests as a linear contact on the holding part 12.

A modified slide 27 is also provided on the fastening part 23, which has a different shape than the slide 17 in Figure 2 has, but also serves to unlock the clamping lever 25. For this purpose, a holder 36 is provided on the slide 27 in order to actuate the unlocking means 28, which comprise a pulling element which engages with a section 37 in the holder 36. The tension element is arranged on the opposite side with a section 48 in a wedge-shaped gap 29 between the clamping lever 25 and the fastening part 23. By pulling the tension element, the clamping lever 25 can be pivoted into the unlocking position against the force of a spring. Elongated holes 38 are provided on the slider 27 and are penetrated by pins 39 in order to guide the slider 27 accordingly.

In Figure 5A the clamping lever 25 is shown in the locked position, but without the holding part 12. The slide 27 has spring elements 42 which are supported against a portion of the means for unlocking 28 and thus hold the slide 27 in its starting position. In order to unlock the clamping lever 25, the slide 27 is moved against the force of the spring elements 42 along the elongated holes 38 until the in Figure 5B shown position is reached. By moving the slide 27, the tension element of the means 28 for unlocking the clamping lever 25 is moved, which is moved along the gap 29 and has thereby pivoted the clamping lever 25 counterclockwise.

As a result, the gap between the contact region 26 of the clamping lever 25 and the opposite side wall 22 is enlarged, so that the holding part 12 can be pulled out of the receptacle 20 without being destroyed.

The plate-shaped fastening part 23 is inserted into a receptacle 33 on the housing 15. A recess 21 is also formed on the housing 15 in the region of the receptacle 20. The fastening part 23 has a receptacle 35 for inserting an edge section of the knurled nut 19 so that the fastening part 23 can be displaced relative to the housing 15 for a lateral adjustment.

In the illustrated embodiment, both the clamping lever 25 and the fastening part 23 are made of metal, in particular 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, 23 '

attachment portion

24

axis of rotation

25

clamping lever

26

contact area

27

pusher

28

Unlocking means

29

gap

30

feather

33

admission

35

admission

36

bracket

37

section

38

slots

39

spigot

42

spring element

48

section

Claims (18)

1. An item of furniture having a drawer (4), a pullout guide (3) and a device for fixing the drawer (4) on a movable rail (5) of the pullout guide (3), whereby the item of furniture (1) comprises a furniture body (2), at the side walls of which the pullout guide (3) is fixed, whereby the device comprises a clamping mechanism having a receptacle (20), into which a web-shaped holding part (12) is insertable, 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 friction-locked manner against pulling out.
2. The item of furniture according to Claim 1, characterized in that the clamping element (25) is embodied as a clamping lever (25) and is mounted so it is rotatable about a rotational axis (24).
3. The item of furniture according to Claim 1 or 2, characterized in that the clamping element (25) is pre-tensioned in the locked position.
4. The item of furniture according to any one of the preceding claims, characterized in that means (28) for unlocking the clamping element (25) are provided, by means of which the non-positive connection of the clamping element (25) can be disengaged from the holding part (12).
5. The item of furniture according to Claim 4, characterized in that the means (28) for unlocking comprise a traction element, by means of which the clamping element (25) is movable into an unlocked position.
6. The item of furniture according to Claim 5, characterized in that the traction element is designed as a wire bow, which is movable in a wedge-shaped gap (29) between the clamping element (25) and a fastening part (23).
7. The item of furniture according to any one of Claims 4 to 6, characterized in that the means (28) for unlocking can be actuated via a guided slide (27).
8. The item of furniture according to any one of the preceding claims 2 to 7, characterized in that the clamping element (25) presses via a linear contact region (26) against the holding part (12), which extends substantially in parallel to the rotational axis (24) of the clamping element (25).
9. The item of furniture according to any one of the preceding claims, characterized in that the holding part (12) is continuously fixable on the clamping mechanism.
10. The item of furniture according to any one of the preceding claims, characterized in that the surface of the clamping element (23) pressing against the holding part (12) and the holding part (12) are produced from metal.
11. The item of furniture according to any one of the preceding claims 2 to 10, characterized in that the rotational axis (24) of the clamping element (25) is arranged before a linear contact region (26) of the clamping element (25) on the holding part (12) in the insertion direction.
12. The item of furniture according to any 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 mounted so it is rotatable or bendable.
13. The item of furniture according to Claim 12, characterized in that the fastening part (23) is mounted so it is displaceable on or in a housing (15).
14. The item of furniture according to Claim 13, characterized in that the fastening part (23) is movable via means (19) for lateral adjustment in relation to the housing (15).
15. The item of furniture according to any one of the preceding claims, characterized in that the clamping element (25) is embodied as a clamping lever (25) and is actuated by bending.
16. The item of furniture according to any one of the preceding claims, characterized in that a fastening part (23) is provided, on which the clamping element (25) is indirectly or directly arranged, or the clamping element (25) is embodied in one piece with the fastening part (23).
17. The item of furniture according to any 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).
18. A method for fixing a drawer (4), on a movable rail (5) of a pullout guide (3) which is fixed to the side walls of a furniture body (2), comprising a clamping mechanism having a receptacle (20), into which a web-shaped holding part (12) is insertable, 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 friction-locked manner against pulling out, characterized in that the friction-locked connection is canceled by actuating a button or a slide (17, 27) and the holding part (12) is removable from the clamping mechanism.

Images