DE202007006690U1 - flap bracket - Google Patents

Abstract

Flap fitting, especially for cabinet furniture, with a pivoting part (4) which is connectable to a flap (3) and on two guide levers (7, 9) is mounted, and a holding plate (20) provided with a furniture body (2) is connectable, wherein on the holding plate (20) has two levers (11, 12) are mounted, of which a first lever (11) with two guide levers (7, 9) is hingedly connected and a second lever (12) with a Guide lever (7) hingedly connected, characterized in that on a lever (11, 12) or guide lever (7, 9) a coupling element (30, 30 ', 50, 60, 70) is provided, by a drive (32, 55, 67, 73) for moving the pivoting part (4) is movable.

Description

The The present invention relates to a flap fitting, in particular for cupboard furniture, with one Swiveling part, which can be connected to a flap and two guide levers is stored and a holding plate, with a furniture body is connectable, wherein on the holding plate two levers are mounted, from which a first lever articulated with two guide levers is and a second lever articulated to a guide lever is.

It are flap fittings for cupboard furniture, at which a flap pivots from a closed position upwards is to release an interior. Especially for kitchen furniture such flap fittings at upper cabinets used. When the flap is in the open position, must The user usually reaches far up to the flap again close. This is considered cumbersome Not every user can feel that they are in the upper area Open flaps and close.

It is therefore an object of the present invention, a flap fitting to create that in a simple way with a drive for automatic opening and opening Shut down the pivoting part is connected.

These Task is with a flap fitting with the features of the claim 1 solved.

According to the invention is on the flap fitting on a lever or guide lever a coupling element provided by a drive for moving the pivoting part is movable. The arrangement of a coupling element on a lever or guide lever has the advantage that the flap fitting even without drive device mounted on furniture functional can be, so retrofitting of the drive for certain applications possible is. In this case, the coupling element with comparatively low Assembly effort to be mounted on the lever or guide lever. The coupling element is in this case with at least one arbitrary lever, So connected to a movable fitting part to automatically open the To allow flap fitting.

According to one preferred embodiment of the invention is the coupling element on a hinge axis with the guide lever and connected to the lever. The arrangement on the hinge axis is on the one hand for the Installation easy and also results in predetermined balance of power for the Drive elements, depending from the opening angle of the swivel part.

For a compact Construction is the drive adjacent to the mounting plate on the Pivoting part facing away from or arranged under the retaining plate. As a result, the drive is relatively far away from the opening area of the flap and therefore only badly visible.

For a simple Handling is the pivoting part in an opening area, preferably between an open position from at least 45 ° to 110 ° through Clamping and friction forces fixable. This allows the drive to open the pivoting part, that in a desired angular position can be fixed. It is not necessary, the swivel part always Completely to open and close.

According to one Another embodiment of the invention, a spring is provided, by means of the pivoting part in a closed position in the closed Position and after pivoting of the pivoting part beyond a dead center in the open one Position is biased. The spring can be used as a spiral spring, gas spring, Compression spring, tension spring or other energy storage formed be. The spring can be the necessary force for the process of Reduce swivel part, as part of the weight when opening the Flap is compensated by the spring. In that sense can be This makes the engine comparatively small. In addition, the spring pulls the flap in a closed position to a slight stand off to avoid.

Preferably is the drive power of the drive for pivoting the pivoting part dependent from the open position different sizes and the opening angle of the pivoting part, in which the largest adjusting force is not the opening angle, where the largest power consumption of the drive. In other words, the drive is so with the levers or guide levers coupled that in the maximum open position in which the greatest weight the flap acts on the pivoting part, a force transmission exists, so that the drive in this opening area does not have to provide the maximum power output. This can the motor of the drive are made slightly smaller than in a construction, in the direct proportional to the introduction of force to the pivoting part the power output of the engine is done. Preferably, the power output at least 10% to 20% smaller than in a drive construction, in which a direct drive on a lever or guide lever takes place. The translation between Motor and the lever or guide lever must not over it take place the entire pivoting range, but especially only in an end opening area, where the largest weight forces available are.

Preferably the drive comprises an electric motor, which via a gearbox with the coupling element connected is. In this case, the coupling element on one side a gear spaced from its axis of rotation to be stored and at the opposite Side on a hinge axis between a lever and a guide lever. Thereby can with the use of standard components, such as gears, a Drive device can be provided. To allow a quick opening guarantee, the coupling element can be in a medium pivoting range of the Swivel part at constant speed of the drive a maximum opening speed reach the pivoting part. Because the user wants in a medium swivel range a quick opening of the Reach the flap, but not by a protruding flap be startled at first or by a hard stop the flap at the end of the open position through loud noises be disturbed. In this respect, the pivoting is at different speeds advantageous.

According to one Another embodiment of the invention, the coupling element with connected to a spindle drive. Again this can be done in a simple way on the holding plate or another component for moving the swivel fitting to be assembled. It is also possible a drive with a linkage to provide, which is movable by a windable rope. For the drive the fitting may also be provided with a rotary lever which is attached to a Hinged pivot point of a lever is mounted on one and above the Lever outgoing section is driven.

The Invention will be described below with reference to several embodiments with reference to the attached Drawings closer explained. Show it:

1A to 1C different views of a flap fitting according to the invention in different open positions;

1D to 1F several diagrams of the mechanical conditions in the flap fitting the 1A to 1C depending on the opening angle;

2A to 2D several views of a modified flap fitting in different open positions;

3A to 3C several views of a flap fitting according to the invention with a spindle drive;

3D a diagram of the mechanical conditions in the flap fitting according to the 3A to 3C ;

4A to 4C several views of another fitting in different open positions;

4D and 4E two diagrams of the mechanical conditions in the flap fitting according to the 4A to 4C and

5A and 5B two views of a flap fitting according to another embodiment.

In 1A is a flap fitting 1 shown at a furniture body 2 , preferably a cabinet furniture, is mounted to a flap 3 to pivot upwards. This is the flap 3 a swivel part 4 set, which is formed at an angle and on a section 5 perpendicular to the plane of the flap 3 a joint axis 6 has, at the a guide lever 7 is stored. Spaced from the axis 6 is another axis 8th at the section 5 formed at the second guide lever 9 is rotatably mounted.

The guide lever 9 is on the of the swivel part 4 opposite end over an axis 16 with a first lever 11 connected, which also with the guide lever 7 articulated about an axis 17 is coupled. Distanced from the first lever 11 is a second lever 12 provided on one side about an axis 13 with the guide lever 7 and at the other end via an axle 14 with a holding plate 20 articulated is connected.

As in the 1B and 1C can be seen, let the swivel part 4 relative to the retaining plate 20 to open the flap 3 pivot. In the flap fitting shown 1 it is a fitting with seven hinge axes 6 . 8th . 16 . 17 . 13 . 14 and 15 , The arrangement of these axes as well as the geometry of the levers 7 . 9 . 11 and 12 can be varied depending on the application.

To the swivel part 4 to move easier in the open position is a spring 25 provided at one end to an axle 24 is stored, which is a pivot point for a lever 21 and a lever 22 forms. The lever 21 is at the hinge axis 13 pivoted and the lever 22 is on the off the axis 24 opposite side on an axis 23 fixed to the retaining plate 20 is provided. The feather 25 is on the to the axis 24 facing away from a pin 26 set, adjustable on a screw 27 is held to adjust the spring tension can.

In the closed position of the flap 3 pushes the spring 25 the swivel part 4 in the closed position, there to open the pivoting part 4 about the mechanics the levers 21 and 22 to next to the axles 13 and 23 be moved towards each other, so that the length of the spring 25 at the beginning, something is enlarged. Only after an angle of for example 15 ° to 25 °, the length of the spring is reduced and the spring 25 now pushes the swivel part 4 in an open position. After exceeding a dead center is thus the opening movement by the spring 25 supported.

In order to be able to open and close the flap fitting not only manually but also automatically, a drive device is provided. This comprises a coupling element 30 in the form of a lever, on one side at the hinge axis 13 and on the opposite side to an axle 35 on a gear 33 is stored. The gear 33 is about a rotation axis 34 rotatably mounted, the axis 35 spaced from the axis of rotation 34 is arranged. The gear 33 is by a motor 32 drivable, which has an output shaft with a worm 40 and several gears 36 . 37 . 38 and 39 with the gear 33 connected is. Through the gears 36 to 39 a translation is provided so that the electric motor 32 can be made comparatively small. The gear 31 can also be modified as needed.

To the flap 3 automatically open, drives the engine 32 the gear 33 from the in 1A shown position counterclockwise until initially in 1B shown position is reached. In this position is a line between the axes 13 and 35 of the coupling lever 30 approximately perpendicular to a radial between the axis of rotation 34 and the axis 35 arranged, that is, the opening of the flap 3 takes place in this position very fast, as the movement of the coupling rod 30 and the guide lever 7 largely rectilinear.

Upon further opening then the maximum opening position of the flap 3 corresponding 1C reached. In this position, the gear rotates 33 the axis 35 in one direction, the coupling lever 30 only slightly in one direction according to the line of the axes 13 and 35 shifts and rather pivots. Therefore, at the end of the opening movement, the opening movement of the flap 3 relatively slowly, while in a central area the opening movement of the flap 3 at constant speed of the gear 33 is great.

In 1D is a diagram of the mechanical conditions when opening the flap fitting 1 shown. With the line A is on the guide lever 7 acting force on the axle 13 shown. First of all, there must be some force to open the flap 3 against the force of the spring 25 be spent, then passing through a dead center, wherein the force of the spring 25 in the opening direction and the weight of the flap 3 is still comparatively low due to the small opening angle. From a certain opening angle presses the weight of the flap 3 however, the guide lever 7 and this force will be up to the end position accordingly 1C getting bigger.

With the graph B is that on the gear 33 acting torque when opening the flap 3 shown graphically. Due to the design of the drive device with the coupling rod 30 and the gear 33 Just at the end of the opening process, the torque is again slightly lower, which coincides with the bearing of the axle 35 on the gear 33 is explainable. Because at the end of the opening process causes a rotation of the gear 33 only a slight movement of the flap 3 ,

With Graph C schematically shows the necessary engine power, dependent from the opening angle.

In 1E the engine performance is shown in graph C in a different resolution, the graph D shows the engine power depending on the opening angle. It can be seen that according to the graph B for the torque on the gear and the engine power at the end of the opening process no longer increases, but drops again. As a result, the maximum required engine power is lower than in a motor, for example, the lever 12 would drive immediately. As a result, the corresponding electric motor can be made comparatively small.

In 1F is shown schematically a performance curve for a direct drive, in which, for example, the engine lever 12 immediately drives. Then the necessary engine power increases up to a maximum at the end of the opening process, at which the greatest weight force through the flap 3 is available. Due to the higher power consumption at the end of the opening process, the motor must be designed correspondingly powerful.

In the following embodiments, the fitting parts with the holding plate 20 , the guide lever 7 and 9 , the levers 11 and 12 as well as the pivoting part 4 formed as in the first embodiment. These components will therefore not be described again in detail below.

At the in 2A to 2D shown flap fitting is the coupling rod 30 ' modified formed and a modified gear 33 ' rotatably mounted. The gear 33 ' does not rotate counterclockwise, as in the first embodiment, but clockwise around the flap 3 from a closed position ( 2A ) too to move to a slightly open position ( 2 B ). By further turning the gear 33 ' clockwise will the flap 3 moved to the maximum open position, as shown in 2C you can see.

In 2D is a perspective view of the flap fitting shown, it can be seen that the fittings are relatively thin build and compact. The mechanical forces, torques and powers are similar to those of the first embodiment.

In the 3A to 3C a further Ausführugsform a flap fitting is shown. The flap fitting comprises a rod-shaped coupling element 50 that on the axle 13 rotatable with the guide lever 7 connected is. At the coupling element 50 is a driver in a middle area 54 arranged, which comprises a spindle nut and on a rotatable spindle 53 is movable. The spindle 53 is on a spindle housing 52 fixed and via a motor 55 driven. By turning the spindle 53 the spindle nut moves with the driver 54 and thus can the coupling element 50 from a closed position ( 3A ) via a middle opening position ( 3B ) in a fully open position ( 3C ) move. The spindle drive 51 is on the retaining plate 20 established.

In 3D are the mechanical conditions in the spindle drive 51 shown in a graphic. The graph G shows the force on the guide lever 7 in the area of the camp 13 , wherein the force on the guide lever 7 with increasing opening angle also increases.

The graph H shows the force on the spindle 53 , which unlike the force on the guide lever G at the end no longer increases but drops. This depends on the orientation of the spindle 53 together, at a given angle relative to the guide lever 7 is arranged. This also makes it possible to obtain a corresponding ratio in the area of the opening path.

Thereby results in an engine power according to Graph I, which also on End is again lower than in a middle range.

In the 4A to 4C a further embodiment of a flap fitting is shown, wherein the drive means is a coupling element 60 in the form of a lever, that with another lever 61 over an axis 62 is rotatably connected. The lever 61 is also on another axis 63 on the furniture body 2 or on a corresponding holding plate 20 established. To open and close the flap 3 is a rope 64 provided, on one side on the axle 62 is fixed and on the opposite side to a roll 65 Winding bar is. The role 65 is about a toothed segment 66 driven by a gearbox with an electric motor 67 connected is.

By pulling on the rope 64 will shut up 3 initially from a closed position ( 4A ) is moved to a slightly open position ( 4B ). Will the rope 64 continue on the role 65 wound up, the flap opens up to a maximum opening position, as shown in 4C is shown.

In 4D the mechanical conditions when opening the flap fitting are shown. The graph K shows the on the rope 64 acting force depending on the opening angle of the flap 3 , The force on the rope K passes through a maximum which is spaced from the maximum opening angle. This is related to the fact that the location of the axis 62 when opening the flap fitting changes and the balance of power cheaper. The graph S, however, shows the force on the guide lever 7 in the area of the axis 13 , which increases continuously with increasing opening angle.

The graph L shows the necessary engine power when opening the flap 3 necessary is. Since the force on the rope at the end of the opening path drops again, the motor power at the end of the opening path drops again, so that the electric motor 67 can be made comparatively small.

In 4E is the power curve of the motor at the drive device with the rope 64 shown enlarged. The graph M shows the power curve, depending on the opening angle different power to the electric motor 67 demanded, just at the maximum opening angle despite the weight force through the flap 3 the performance drops slightly again.

In 5A a further embodiment of a flap fitting is shown, wherein the guide lever 7 via a coupling element 70 is moved, which is designed as a lever, which is about an axis 71 is pivotable, which is also the axis 14 of the lever 12 is. The coupling element 70 is also over an axis 72 with the guide lever 7 coupled, the axis 72 with the axis 13 is identical. The coupling element 70 but sticks out over the lever 12 and includes a drive 73 , which is pivotable together with the coupling element 70 is. The drive 73 meshes with a toothed segment via a toothed wheel 74 , which is formed fixed and, for example, on the holding plate 20 is fixed. By turning the coupling element 70 around the axis 71 becomes the guide lever 7 and the swivel part 4 moved, causing the flap 3 from the closed position ( 5A ) into an open position ( 5B ) is moved.

In the illustrated embodiments is only a powered opening and closing of the flap fitting explained. It of course also possible, instead, open and close the flap fitting manually. Then is a clutch between the drive and the coupling element as overload clutch, For example, arranged on the transmission slipping clutch, provided which allows a manual movement of the pivoting member relative to the retaining plate.

moreover Is it possible, the drive for to connect the flap fitting with a control, so that Switch, sensors or a remote control to open or close the Flap fitting takes place. On the furniture body can also touch sensors, Radio sensors and other sensors and switches arranged for control be.

Claims (12)

Flap fitting, in particular for cupboard furniture, with a pivoting part ( 4 ), with a flap ( 3 ) is connectable and on two guide levers ( 7 . 9 ) is mounted, and a retaining plate ( 20 ) with a furniture body ( 2 ) is connectable, wherein on the retaining plate ( 20 ) two levers ( 11 . 12 ), of which a first lever ( 11 ) with both guide levers ( 7 . 9 ) is hinged and a second lever ( 12 ) with a guide lever ( 7 ) is hinged, characterized in that on a lever ( 11 . 12 ) or guide lever ( 7 . 9 ) a coupling element ( 30 . 30 ' . 50 . 60 . 70 ) provided by a drive ( 32 . 55 . 67 . 73 ) for moving the pivoting part ( 4 ) is movable. Flap fitting according to claim 1, characterized in that the coupling element ( 30 . 30 ' . 50 . 60 . 70 ) on a joint axis ( 13 ) with the guide lever ( 7 ) and the lever ( 12 ) connected is. Flap fitting according to claim 1 or 2, characterized in that the drive ( 32 . 55 . 67 . 73 ) adjacent to the retaining plate ( 20 ) on the pivoting part ( 4 ) facing away from the side. Flap fitting according to one of claims 1 to 3, characterized in that the pivoting part ( 4 ) in an opening region, preferably between an open position of at least 45 ° to 110 °, can be fixed by clamping and friction forces. Flap fitting according to one of claims 1 to 4, characterized in that a spring ( 25 ) is provided, by means of the pivoting part ( 4 ) in a closed position in the closed and after pivoting of the pivoting part ( 4 ) is biased beyond a dead center into the open position. Flap fitting according to one of claims 1 to 5, characterized in that the drive power of the drive ( 33 . 55 . 67 ) for pivoting the pivoting part ( 4 ) is different and the opening angle of the pivoting part ( 4 ) in which the greatest adjustment force is used, not the opening angle at which the greatest power consumption of the drive ( 32 . 55 . 67 ) he follows. Flap fitting according to one of claims 1 to 6, characterized in that the drive ( 32 . 55 . 67 . 73 ) comprises an electric motor, which via a transmission ( 36 to 39 ) with the coupling element ( 30 . 30 ' . 50 . 60 . 70 ) connected is. Flap fitting according to one of claims 1 to 7, characterized in that the coupling element ( 30 . 30 ' ) on one side on a gear ( 33 . 33 ' ) spaced from its axis of rotation ( 34 ) is mounted and on the opposite side to a hinge axis ( 13 ) between a lever ( 11 ) and a guide lever ( 7 ) is stored. Flap fitting according to claim 8, characterized in that the coupling element ( 30 . 30 ' ) in a central pivoting range of the pivoting part ( 4 ) at constant speed of the drive ( 32 ) a maximum opening speed of the pivoting part ( 4 ) reached. Flap fitting according to one of claims 1 to 9, characterized in that the coupling element with a spindle drive ( 52 to 54 ) is connect. Flap fitting according to one of claims 1 to 9, characterized in that the drive is a linkage ( 60 . 61 ) by a windable rope ( 64 ) is movable. Flap fitting according to one of claims 1 to 9, characterized in that the coupling element is a rotary lever ( 70 ), which at a hinge point ( 71 ) of a lever ( 12 ) and at one over the lever ( 12 ) outgoing section is driven.