EP0317737B1 - Fitting for a corner cupboard, in particular a kitchen corner cupboard - Google Patents

Abstract

The fitting for a corner cupboard, in particular a kitchen corner cupboard has a carousel, containing at least one shelf, having a rotatably mounted rotary column (3) and a two-leaved door (8, 9), which is connected to the rotary column (3) via a fitting linkage, the leaves (8, 9) of which door execute during opening and closing a folding-in or folding-out movement, which is symmetrical in relation to the angle bisector of the door corner, with a superimposed radial retraction end extension movement and are held in the closed position by a spring device (37). Arranged between two parts (26, 28), which execute a movement relative to each other during the door movement, is a movement braking member (40), the braking force of which is directed counter to the closing movement. <IMAGE>

Description

The invention relates to a fitting for a corner cupboard, in particular a kitchen corner cupboard, which has a carousel containing at least one shelf with a rotatably mounted rotating column and a double-leaf door connected to it by means of a fitting linkage, the leaves of which, when opening and closing, have one with respect to the bisector of the corner of the door Execute mirror-image retracting or extending movement with superimposed radial retracting or extending movement and are held in the closed position by a spring device.

The two door panels fastened with the aid of such a fitting lie in the closed position with their edge area facing away from the corner formed by them against the end face of the facing side wall of the corner cupboard, so that the carousel can only be rotated when the two door panels are folded and thereby radially be retracted so that they come free from the cabinet side walls. This takes place against the force of the spring device.

If you then turn the carousel and the door leaves reach the cabinet opening after setting or removing an object, the spring device tensioned in the open position becomes effective so that the door leaves are automatically transferred to the closed position closing the cabinet opening.

In known fittings of this type, as can be seen, for example, from DE-PS 30 49 114, the door experiences a strong acceleration when closed due to the spring action, so that the door leaves arrive in the closed position at a correspondingly high speed. In this case, relatively strong shocks or blows occur, which is not only loud but above all has the disadvantage that parts that meet and act as stops can be damaged over time in the closed position.

The present invention is therefore based on the object to provide a fitting of the type mentioned, in which the occurrence of bumps or impacts is avoided when the door arrives in the closed position.

This object is achieved in that between two in the door movement executing a relative movement to each other a unidirectional, with its braking force opposing the closing movement movement brake member is arranged in the form of an articulated damping cylinder with an axially protruding brake rod at one end of the cylinder.

Thus, the closing movement does not snap, but is braked and thus damped, so that the door leaves move more slowly into the closed position. There is therefore a gentle closing of the door without noise and without impacts or bumps that promote wear.

Since the movement brake element is arranged between two linkage parts, it can already be installed by the fitting manufacturer within the fitting. In contrast, if the movement brake element were to attack the door of the corner cupboard, the furniture manufacturer would have to carry out additional assembly work.

Movement brake elements in the form of a damping cylinder work regularly pneumatically or hydraulically and are subject to practically no wear, even under the conditions prevailing in a kitchen, where greasy vapors occur and are reflected everywhere. If a friction brake were used instead of the damping cylinder, the braking effect would be canceled after a relatively short time due to the lubrication of the surfaces rubbing against one another by the kitchen vapors. A friction brake would also tend to rattle and tilt. The use of a damping cylinder has the further advantage that damping cylinders are commercially available as such, so that no separate development costs are incurred.

Since the damping cylinder is articulated on both ends, it can follow the fitting movement freely. In doing so, since it is a unidirectional motion brake member, the braking force only when the door is closed, so that the opening of the door is not hindered.

The movement brake member is expediently arranged on the side of the bisector that is opposite the spring device. This is particularly cheap in terms of space.

If the fitting has a helical spring attached to both ends of a rod part as a spring device, the movement brake member can be attached to the fastening points for the helical spring. In this way, the fitting can either be equipped with a second coil spring or with the movement brake element according to the invention, if no value is placed on the damping of the closing movement. Or in other words:
For example, in the case of DE-PS 30 49 114, two helical springs are arranged symmetrically to the bisector of the angle, one of which can simply be omitted and the movement brake member used in its place, so that the fitting can otherwise be retained unchanged.

In a preferred embodiment it is provided that the outer end of a scissor lever is articulated to two pivoting parts of the linkage which are to be rigidly fastened to one of the door leaves, the two scissor levers intersecting on the bisector of the angle, rotatable at the intersection on one during the door movement are arranged along the bisecting axis and extended beyond the crossing point are so that they form two-armed levers, and that between the inner end of a scissor lever and the pivoting part to which the other scissor lever is articulated, or the other scissor lever in the region of the damping cylinder facing the pivoting part.

The damping cylinder is preferably arranged between two linkage parts that move towards one another when the door is closed.

Fig. 1

die schematische Draufsicht eines Kücheneckschranks bei abgenommener oberer Abdeckung,

Fig. 2

einen Kücheneckschrank im Vertikalschnitt gemäß der Linie II-II in Fig. 3 in Teildarstellung,

Fig. 3

einen Horizontalschnitt der Anordnung nach Fig. 2 gemäß der Linie III-III, wobei sich die Türe bzw. der Beschlag in der Schließstellung befindet,

Fig. 4

eine der Fig. 3 entsprechende Darstellung mit geöffneter Türe.

An embodiment of the invention will now be explained in detail with reference to the drawing. Show it:

Fig. 1

the schematic plan view of a kitchen corner cabinet with the top cover removed,

Fig. 2

a kitchen corner cabinet in vertical section along the line II-II in Fig. 3 in partial view,

Fig. 3

2 along the line III-III, the door or the fitting being in the closed position,

Fig. 4

a representation corresponding to FIG. 3 with the door open.

A kitchen corner cabinet 1 of a fitted kitchen contains a carousel 2 which has a rotatably mounted vertical rotating column 3. This rotating column 3 is on the one hand on the upper cover 4 of the corner cabinet, which is usually formed by a worktop, and on the other hand on the cabinet floor 5 stored. The carousel 2 can also contain at least one shelf 6, indicated by dashed lines in FIG. 2, which sits on the rotating column 3 in a rotationally fixed manner. The interior of the corner cabinet 1 and thus also the carousel 2 is closed to the outside by a corner door 7, which consists of two door leaves 8, 9. These two door leaves 8, 9 enclose a larger angle of preferably 90 ° in the closed position (FIGS. 1 and 3) and a smaller angle in the open position (FIG. 4) than in the closed position. In the closed position, each wing 8 or 9 forms a right angle with the adjacent cabinet side wall 10 or 11, the wing 8 or 9 covering the side wall 10 or 11 on the end face. The carousel 2 or the compartments formed by the shelves 6 can optionally be divided into individual compartments by dividing walls indicated by dashed lines in FIG. 1.

The carousel 2 does not extend over a full circle. Rather, the carousel advantageously has a sector-shaped cutout 12 which extends over a smaller angle than 90 ° and which, in the closed position of the door 7, is opposite the associated cabinet opening, the corner formed by the two wings 8, 9 projecting into this cutout 12. To open the door, the two door leaves 8, 9 are pressed inward toward the rotating column 3. Here, the two door leaves 8, 9, as can be clearly seen from a comparison of FIGS. 3 and 4, move in a mirror image onto the bisector (this falls in with the section line II-II Fig. 3 together) between the wings containing 8,9 vertical plane. Simultaneously with this retracting movement, they carry out a radial retracting movement further into the cutout 12. Reverse movements take place when the door 7 is closed. Since the pivoting movement of the wings overlaps the bisector to form a radial movement inwards, the two door wings 8, 9 are free from the side walls 10, 11 of the cabinet body in the open position. In the open position, the outer end edges 13, 14 of the wing are approximately at a distance corresponding to the radius of the carousel 2 from the rotating column 3, so that the door wings cannot brush against the cabinet side walls 10, 11 when the carousel is rotated.

To control the movement of the door leaves 8, 9 during opening and closing and to hold the leaves in the open position during the carousel rotation, a fitting with a fitting linkage to which the door leaves are attached is provided, which will now be described in detail.

The fitting contains a first fitting unit 15, which is non-rotatably seated on the carousel and is in this case firmly connected to the rotating column 3, and a second fitting unit 16, which is fixed in place on the cabinet body, in the exemplary embodiment on the cupboard base 5. The first fitting unit 15 contains a support unit seated on the rotating column 3, which essentially consists of two approximately at right angles to one another Directional, approximately radially protruding from the rotating column 3, the support arms 18, 19 is formed, wherein at the transition between the two support arms 18, 19, that is to say at the corner formed by them, a fastening sleeve 20 which is plugged onto the rotary column 3 and is fixed thereon is arranged. This support unit is located in the area of the cabinet base 5. At the free end of each support arm 18 or 19, a support part 23 or 24 acting as a lever is articulated via an axis of rotation 21 or 22, which protrudes towards the facing door leaf 8 or 9 and with this is rigidly connected by screwing. When the door is opened, the pivot parts 23, 24 pivot about the axes 21, 22 inwards towards the respective support arm 18 or 19.

A first scissor lever 26 is articulated on the swivel part 23 on an axis 25 facing the wing 8 and another, second scissor lever 28 is articulated on the swivel part 24 on an axis 27 facing the wing 9. The two scissors levers 26, 28 intersect on the bisector II-II. Viewed from the axis 25 or 27, the respective scissor lever 26 or 28 is angled in front of the intersection 29 to the respective other pivot part 24 or 23. At the intersection 29, the two scissors levers 26, 28 are arranged on a common axis 30. This axis 30 is extended downward and also projects downward above the support arms 18, 19 arranged below the scissor levers 26, 28 and carries a guide roller 31 at the lower end. The two scissor levers 26, 28 are over the intersection 29, ie about the common axis 30 also extends so that they form two-armed levers.

On the common axis 30 there is another lever, namely a guide lever 32 which is articulated on one of the support arms, in the exemplary embodiment on the support arm 18 on a pivot axis 33. It extends towards the bisector II-II and runs between the two scissor levers 26, 28 on the one hand and the plane of the support arms 18, 19 on the other hand. Its end opposite the pivot axis 33 is free. The guide arm 32 is approximately at right angles to the bisector II-II, so that the common axis 30 moves a little approximately linearly on the bisector when the guide arm 32 is pivoted.

It can be seen that when pressing against the two door leaves 8, 9 from the outside, the two pivot parts 23, 24 pivot about the axes 21, 22 inwards, taking the scissors levers 26, 28 with them, which simultaneously rotate about the common axis 30 which is shifted to the rotating column 3. As a result, the retracting movement overlaps the retracting movement of the door.

The other fitting unit 16 has an approximately disk-like shape and is firmly connected to the cabinet base 5. It has an outer annular projection 34 facing the first fitting unit 15, the radial one inner boundary surface forms a guide surface 35 which is assigned to the guide roller 31.
In the area of the bisector II-II, the annular projection 34 has a radial slot 36. When the door is closed, the guide roller 31 is seated in this radial slot 36, so that the guide roller 31 and, via this, the entire carousel are secured against rotation.
If the guide roller 31 comes free from the radial slot 36 when the door is opened, the carousel can be rotated. Here, the guide roller 31 rolls on the guide surface 35 of the second fitting unit 16. In this way, the fitting and the door are held securely in the open position during the carousel rotation. If the carousel is turned back into its starting position, the guide roller 31 can again engage the radial slot 36, so that the door can be closed.

So that the door closes automatically, a spring device is provided on the first fitting unit 15, which in the exemplary embodiment is formed by a helical spring 37. The helical spring 37 is fastened on the one hand on the swivel part 23 at a point 38 opposite the door leaf 8 with respect to the axis 21 and on the other hand at the point 39 on the inner end of the second scissor lever 28. The two fastening points 38, 39 are simply formed by holes into which the spring ends are suspended. Enlarged when opening the door the distance between the two fastening points 38, 39, the force of the helical spring 37 designed as a tension spring and holding the door in the closed position must be overcome. When the door is closed, the helical spring 27 pulls the two fastening points 38, 39 towards one another, so that the fitting linkage automatically executes the closing movement. Appropriately attached stops, for example offsets on the scissor levers 26, 28 that run against each other, can define the closed position.

In connection with the present invention, the fitting details described so far can also be designed differently. However, the described embodiment is advantageous.

It is essential first of all that to dampen the closing movement of the door 7, a movement brake member 40 is arranged between two parts which perform a relative movement to one another during the door movement, the braking force of which is opposed to the closing movement. Thus, while the force of the spring device 37 automatically causes the closing movement, the movement brake member 40 inhibits this movement, so that the door moves gently into the closed position.

One of the two parts, between which the movement brake member is arranged, can be stationary. This could be, for example, the rotating column 3 or the one essentially formed by the two support arms 18, 19 Act support unit. However, at least one of the two parts on which the movement brake member is located must move when the door is closed.

The movement brake member 40 is expediently arranged between two linkage parts of the fitting. In the expedient embodiment, the movement brake member 40 is arranged between the inner end 26 'of one scissor lever 26 and the other scissor lever 28 in the area facing the pivot part 24 assigned to this scissor lever 28. These two parts, i.e. the named ends of the two scissors levers 26, 28 move towards one another when the door is closed, as can be easily illustrated with reference to FIGS. 3 and 4. Instead of the scissors lever 28, the end of the movement brake member 40 assigned to this could also be attached to the swivel part 24 and preferably at a point opposite the door leaf 9 with respect to the axis 22, e.g. fasten at 41. It would also be possible to arrange the movement brake member between two parts that move away from each other when the door is closed. In both cases, however, it is advantageous that the movement brake member 40 is a one-way brake member.

The movement brake member 40 shown is formed by a damping cylinder with a brake rod 42 protruding in the axial direction at one cylinder end. Such damping cylinders are known per se, so that a detailed description is unnecessary. In principle, it is a matter of the fact that within the damping cylinder 40 filled with a pressure medium there are two cylinder spaces separated from one another by a piston seated on the brake rod 42, the pressure medium moving the brake rod 42 in one direction via a flow resistance from one cylinder space into the reaches the other cylinder space, while when the brake rod 42 is moved in the opposite direction, the pressure medium flows practically without resistance from the other cylinder space into one cylinder space.

The end of the damping cylinder 40 opposite the brake rod 42 is articulated on the first scissor lever 26 via the pivot axis 43. The free end of the brake rod 42 is articulated on the second scissor lever 28 on the axis 43. Regardless of the design of the movement brake member in detail, it is expedient that it is articulated at both ends so that it can participate in the fitting movement.

In the exemplary embodiment, the brake rod 42 is inserted into the damping cylinder 40 when the door is closed, i.e. the damping cylinder is effective in this direction.

From the above it can be seen that the movement brake member 40 is arranged on the side of the bisector II-II opposite the spring device 37. Thus, the coil spring 37 and the movement brake member 40 interfere not each other in space.

The lever arm of the first scissor lever 26 facing the movement brake member 40 is longer than the lever arm of the second scissor lever 28 facing the coil spring 37. However, these two lever arms could also be of the same length, i.e. in the exemplary embodiment, the lever arm of the first scissor lever 26 facing the movement brake member 40 could also be made shorter if the movement brake member 40 had a sufficiently small diameter that the movement of the other linkage parts was not hindered by it.

Another variant consists in that the movement brake member 40 is fastened to the fastening points 38, 39 for the helical spring 37 corresponding points beyond the bisector II-II. You can then retrofit a fitting since then with two coil springs simply by removing one of the two coil springs and replacing it with the movement brake member 40.

Claims (5)

1. Metal fitting for a corner cupboard, in particular a kitchen corner cupboard, having a carousel containing one or more shelves, with a pivotably mounted rotating column, and a two-leaf door joined to the latter via a metal linkage, with the leaves of the door executing on opening and closing a folding in and out movement in mirror-image relative to the line bisecting the door corner, with superimposed inwards and outwards movement, and held in the closed position by a spring mechanism, characterized in that between two linkage members (26,28) executing a relative movement towards one another during movement of the door is mounted a unidirectional movement brake member (40) with its braking force directed against the closing movement, in the form of a damping cylinder pivotably attached at both ends, with a brake rod (42) protruding axially at one end of the cylinder.
2. Metal fitting according to claim 1, characterized in that the damping cylinder (40) is located on the side of the bisecting line (II-II) opposite the spring mechanism (37).
3. Metal fitting according to claim 2, with a helical spring fastened to each end of a linkage member as spring mechanism, characterized in that the damping cylinder is fastened to points corresponding to the mounting points for the helical springs.
4. Metal fitting according to claims 2 or 3, characterized in that pivoted at each of two swivelling members (23 and 24) of the linkage, each to be secured rigidly to one of the door leaves (8 and 9 respectively), is the outer end of a scissors-type lever (26 and 28), with the two scissors-type levers crossing at the bisecting line, being pivotably mounted on one axis (30) moving along the bisecting line during movement of the door, and extending beyond the crossing point (29), so that they form two-arm levers, and that the damping cylinder (40) is located between the inner end of one scissors-type lever (26) and the swivelling member at which the other scissors-type lever is pivoted, or more expediently the other scissors-type lever (28) in the area facing the swivelling member (24).
5. Metal fitting according to any of claims 1 to 4, characterized in that the damping cylinder (40) is located between two linkage members (26,28) which are to move towards one another on closing of the door.

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