FLAP FITTING AND ITEM OF FURNITURE
The invention relates to a shutter fitting, in particular for a piece of furniture, said fitting comprising a housing which can be fixed to a body, on which housing a supporting arm is mounted rotatably, and comprising a pivotably mounted control arm, wherein the supporting arm and the control arm can be hingedly connected to a shutter via spaced-apart axes of rotation, wherein the supporting arm drives a first gearwheel in the event of a rotary movement, which first gearwheel directly or indirectly drives a second gearwheel, wherein the control arm is rotatably mounted on the second gearwheel at a distance from the axis of rotation of the second gearwheel, and to a piece of furniture comprising a shutter fitting of this kind.
- 1-10. -10. (canceled)
- 11. A flap fitting for an item of furniture, wherein the flap fitting comprises:
a main body; a supporting lever rotatably mounted on the main body; and a control lever pivotably mounted on the main body, wherein the supporting lever and the control lever are connectable in an articulated manner to a flap of the item of furniture via respective and spaced-apart axis of rotation, the supporting lever drives a first gear wheel during a rotational movement, the first gear wheel directly or indirectly drives a second gear wheel, and the control lever is rotatably mounted on the second gear wheel spaced apart from the axis of rotation of the second gear wheel.
- View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
- 20. An item of furniture, comprising:
a furniture body; a flap; and two flap fittings coupling the flap to the furniture body, each of the two flap fittings comprising a main body; a supporting lever rotatably mounted on the main body; and a control lever pivotably mounted on the main body,
Exemplary embodiments of the present invention relate to a flap fitting, in particular for an item of furniture, having a housing, which is fixable on a body, and on which a supporting lever is rotatably mounted, and a pivotably mounted control lever, wherein the supporting lever and the control lever can be articulated with a flap via spaced-apart axes of rotation, and the supporting lever drives a first gear wheel during a rotational movement, which directly or indirectly drives a second gear wheel, and an item of furniture having a furniture body on which a flap is held via two flap fittings.
EP 1 705 328 B1 discloses an opening and closing device for a flap door, in which the flap is held on two rotatable arms. The arms are coupled to one another via regions having gear teeth, so that during opening, the flap pivots through the two arms. This flap fitting has the disadvantage that the flap covers on open region of the furniture body in the collapsed state and the user has to apply comparatively large forces in the vertical direction for an opening movement.
EP 2 138 658 B1 discloses a flap fitting for a furniture flap, in which the furniture flap is pivotable by a positioning arm and a control lever. The pivot arm is mounted around a fixed axis of rotation in this case, while the control lever is linked via a linkage axis movable on a bearing part. The pivot movement of the furniture flap can thus be guided in the desired movement path, however, in particular in the starting range of the opening movement, sluggishness can occur.
Accordingly, exemplary embodiments of the present invention are directed to a flap fitting having an optimized movement sequence for opening and closing the flap.
In the flap fitting according to the invention, a supporting lever is provided, which drives a first gear wheel during a rotational movement, which directly or indirectly drives a second gear wheel, wherein the control lever is rotatably mounted on the second gear wheel spaced apart from the axis of rotation of the second gear wheel. The supporting lever and the control lever are thus coupled to one another in their movement via the gear wheels, so that a mechanical guide by the supporting lever and the control lever is performed over the entire movement range of the flap. Due to the coupling via the gear wheels, a smooth movement can be set via a force accumulator, which substantially compensates for the weight forces.
A force accumulator is therefore preferably provided, which pre-tensions the flap in a closed position in the closing direction and which pre-tensions the flap in an opening range in the opening direction. The user then only has to overcome the closing forces of the force accumulator for an opening movement and move the flap up to an opening range, in which the force accumulator automatically pre-tensions and moves the flap in the opening direction. The opening range can begin, for example, viewed from the closing position, at between 20% to 50% of the total movement range of the flap, so that only a slight opening movement by the user is required and then the flap is movable further in the opening direction via the force accumulator.
The force accumulator is preferably coupled via a rotatably mounted control disk to at least one gear wheel. A curve guide can be formed in the control disk in this case, on which a holder connected to the force accumulator is guided. The force accumulator can comprise one or more springs here, in particular traction springs, which are tensioned in the housing of the flap fitting.
For a compact construction, a gearing formed from multiple gear wheels can be provided between two side walls of the housing. Due to the use of gear wheels, it is possible to set the forces for moving the flap, and in particular the axis of rotation of the control lever can be changed to ensure a harmonic movement sequence.
To avoid a hard impact, at least one damper can be provided, by means of which an opening and/or closing movement of the flap is decelerated before reaching the end position.
For simple mounting, an attachment can be installable on the flap, on which the axis of rotation for the supporting lever and the axis of rotation for the control lever are provided, so that the spacing of the two axes of rotation is predetermined by the attachment. In addition, a damper for decelerating an opening movement of the flap can be provided on the attachment. The damper can also assume a holding function here, to ensure a fixation of the flap in a certain opening range if the user lets go of the flap.
The attachment can be formed both in one part and also multiple parts.
In the pivot fitting, the flap is preferably moved during an opening movement with an upper section away from the flap fitting, i.e., forward toward the user. The flap thus protrudes upward into the space, so that an opening range on the furniture body can be completely used, in particular if the lower region of the flap is arranged in the maximally open position in the region of the top panel of the cabinet furniture. The flap can be formed as a dimensionally-stable front panel in this case, or also as a pivot flap, which consists of two or more parts and is collapsed during the opening movement.
The invention is explained in greater detail hereafter on the basis of an exemplary embodiment with reference to the appended drawings. In the figures:
An item of furniture 1 comprises a furniture body 2, for example, for a hanging cabinet in a kitchen, in which the rear wall was omitted in
A flap fitting 4 having the flap 3 without furniture body 2 is shown in
The flap 3 is shown in an open position in
The flap fitting 4 is shown in a closed position in
An axis of rotation 70, on which the control lever 7 is rotatably mounted, is provided on the second gear wheel 11 spaced apart from the axis of rotation 12 of the gear wheel 11. The control lever 7 is rotatably mounted around an axis of rotation 71 on the attachment 9 at the opposing end. The axis of rotation 70 thus moves during an opening and closing procedure of the flap 3, which is held on the attachment 9.
To partially compensate for the weight forces of the flap 3 during the opening and closing, a force accumulator 20 is provided, which comprises three springs 21, in particular traction springs in the illustrated exemplary embodiment, which are arranged between a first spring holder 22 and a second spring holder 24. The second spring holder 24 is fixed in this case via a fastening 25 on the housing 5. The spring holder 22 is connected via a rod 23 to a movable holder 18. A receptacle 19 is provided on the holder 18, on which the rod 23 of the force accumulator 20 is fixed, so that the holder 18 is pre-tensioned by the force accumulator 20. The holder 18 comprises a guide element 17, which is mounted in a curve guide 16 of a control disk 15. The control disk 15 is rotatably mounted here around an axis of rotation 14, which is provided on the housing 5. Furthermore, the control disk 15 is coupled for conjoint rotation to a third gear wheel 13, which is engaged with the first gear wheel 10.
Various positioning options for the positioning of the rod 23 of the force accumulator 20 are formed on the receptacle 19 of the holder 18, so that an optimum presetting of the force action to the weight forces of the flap 3 to be compensated for can already be performed by the selection of a suitable position. Instead of the positioning options, a continuous presetting can also be provided, for example, in the form of a screw/nut connection, by which the position of the rod 23 in relation to the holder 18 can be changed.
The term “gear wheel” is understood to mean rotating disks having external gear teeth, wherein the external gear teeth extend alternately over the entire circumference or only a part of the circumference. Alternatively, toothed segments, internal gear teeth, or other components can be used as gear wheels, on which teeth are provided for the formfitting engagement with an adjacent gear wheel.
Furthermore, a damper 30 is provided on the housing 5, which is formed as a linear damper, in particular as a fluid, liquid, or air damper, which is held on a fastening element 31 on the housing 5 and comprises a piston-cylinder unit, which generates damping forces upon compression. On the side facing away from the fastening element 31, a contact surface 32 is provided, for example, a contact roller, which can be contacted by an actuating element 33 on the holder 18.
For an opening procedure, a handle arranged in the lower region of the flap 3 is actuated by a user to move the flap 3 forward and upward. The flap 3 is illustrated in a slightly open position in
If the flap 3 is moved further in the opening direction, as shown in
The flap 3 is moved further in the opening direction according to
The maximally open position of the flap fitting 4 is shown in
For a closing movement, the user pulls the flap 3 downward against the force of the force accumulator 20 until the flap 3 is again arranged in the closed position illustrated in
In the illustrated exemplary embodiment, three gear wheels 10, 11, and 13 are arranged in the housing 5. It is also possible to provide a gearing having a predetermined transmission ratio in the housing 5 in order to adapt the tensioning and release of the force accumulator 20 still more strongly to the weight of the flap 3 and other parameters.
A flap fitting 4 is fastened on an inner side of a side wall of a furniture body 2 in each of
Although the invention has been illustrated and described in detail by way of preferred embodiments, the invention is not limited by the examples disclosed, and other variations can be derived from these by the person skilled in the art without leaving the scope of the invention. It is therefore clear that there is a plurality of possible variations. It is also clear that embodiments stated by way of example are only really examples that are not to be seen as limiting the scope, application possibilities or configuration of the invention in any way. In fact, the preceding description and the description of the figures enable the person skilled in the art to implement the exemplary embodiments in concrete manner, wherein, with the knowledge of the disclosed inventive concept, the person skilled in the art is able to undertake various changes, for example, with regard to the functioning or arrangement of individual elements stated in an exemplary embodiment without leaving the scope of the invention, which is defined by the claims and their legal equivalents, such as further explanations in the description.
- 1 item of furniture
- 2 furniture body
- 3 flap
- 4 flap fitting
- 5 housing
- 6 supporting lever
- 7 control lever
- 8 rod
- 9 attachment
- 10 gear wheel
- 11 gear wheel
- 12 axis of rotation
- 13 gear wheel
- 14 axis of rotation
- 15 control disk
- 16 curve guide
- 17 guide element
- 18 holder
- 19 receptacle
- 20 force accumulator
- 21 spring
- 22 spring holder
- 23 rod
- 24 spring holder
- 25 fastening
- 30 damper
- 31 fastening element
- 32 contact surface
- 33 actuating element
- 50 side wall
- 51 side wall
- 52 spacer
- 60 axis of rotation
- 61 axis of rotation
- 70 axis of rotation
- 71 axis of rotation
- 80 core material
- 81 outer layer
- 82 inner layer
- 83 fastening points