EP2142734A1

EP2142734A1 - Panel fitting

Info

Publication number: EP2142734A1
Application number: EP08717473A
Authority: EP
Inventors: Werner Ihnofeld; Andreas Montecchio; Florian Hettich
Original assignee: Hettich Heinze GmbH and Co KG; Hetal Werke Franz Hettich GmbH and Co KG
Current assignee: Hettich Heinze GmbH and Co KG; Hetal Werke Franz Hettich GmbH and Co KG
Priority date: 2007-05-07
Filing date: 2008-03-06
Publication date: 2010-01-13
Anticipated expiration: 2028-03-06
Also published as: CN101688412B; CN101688412A; RU2455443C2; WO2008135299A1; PL2142734T3; TWI451021B; RU2009144385A; AU2008248881B2; EP2142734B1; TW200905058A; AU2008248881A1; ES2543422T3; DE202007006690U1

Abstract

The invention relates to a panel fitting, particularly for cabinets, comprising a pivot part (4), which can be connected to a panel (3) and is supported on two guide levers (7, 9), and a retaining plate (20), which can be connected to the furniture body (2), wherein on the retaining plate (20) two levers (11, 12) are supported, of which a first lever (11) is connected to the two guide levers (7, 9) in an articulated manner, and a second lever (12) is connected to a guide lever (7) in an articulated manner. A coupling element (30) is provided on a lever (11, 12), or a guide lever (7, 9), the element being displaceable by a drive (32) for moving the pivot part (4). To this end, the coupling element (30) can be mounted with comparatively little effort.

Description

flap bracket

The present invention relates to a flap fitting, in particular for cabinet furniture, with a pivoting part which is connectable to a flap and is mounted on two guide levers and a holding plate which is connectable to a furniture body, wherein on the holding plate two levers are mounted, one of which the first lever is pivotally connected to both guide levers and a second lever is pivotally connected to a guide lever.

There are flap fittings for cabinet furniture in which a flap is pivoted from a closed position up to release an interior. Especially in kitchen furniture such flap fittings are used in wall units. When the flap is in the open position, the user usually has to reach far up to close the flap. This is perceived as laborious and not every user can open and close the flaps located at the top.

It is therefore an object of the present invention to provide a flap fitting that can be easily fitted with a drive for automatic opening and

Closing the pivoting part is connected.

This object is achieved with a flap fitting with the features of claim 1.

According to the invention a coupling element is provided on the flap fitting on a lever or guide lever, which is movable by a drive for moving the pivoting part. The arrangement of a coupling element on a lever or guide lever has the advantage that the flap fitting can be functionally mounted on furniture without drive device, so that a

Retrofitting the drive for certain applications is possible. In this case, the coupling element can be mounted with comparatively little installation effort on the lever or guide lever. The coupling element is with at least one arbitrary lever, so connected to a movable fitting part to allow automatic opening of the flap fitting.

According to a preferred embodiment of the invention, the coupling element is connected to a hinge axis with the guide lever and the lever. The arrangement on the joint axis is on the one hand for mounting easy and also results in predetermined power ratios for the drive elements, depending on the opening angle of the pivoting part.

For a compact construction, the drive is arranged adjacent to the retaining plate on the side facing away from the pivoting part or under the retaining plate. As a result, the drive is relatively far away from the opening area of the flap and thus only poorly visible.

For easy handling, the pivoting part in an opening region, preferably between an open position of at least 45 ° to 110 ° can be fixed by clamping and friction forces. This allows the drive to open the pivoting part that can be fixed in a desired angular position. It is not necessary to always fully open and close the pivoting part.

According to a further embodiment of the invention, a spring is provided, by means of which the pivoting part is biased in a closed position into the closed position and after pivoting of the pivoting part beyond a dead center in the open position. The spring can be used as a spiral spring, gas spring,

Compression spring, tension spring or other energy storage device may be formed. The spring can reduce the force required to move the pivoting part, since a part of the weight is compensated when opening the flap of the spring. As a result, the engine can be made comparatively small. In addition, the spring pulls the flap in a closed position to a slight

Avoid standing out.

Preferably, the drive power of the drive for pivoting the pivoting part is dependent on the Öffhungsstellung different sizes and the opening Angle of the pivoting part, in which the greatest adjustment force is used, is not the opening angle at which the largest power consumption of the drive takes place. In other words, the drive is coupled to the levers or guide levers such that in the maximum open position, in which the greatest weight force of the flap acts on the pivoting part, there is a force transmission, so that the drive in this opening region does not have the maximum power output must provide. As a result, the motor of the drive can be made slightly smaller than in a construction in which the power output of the motor is directly proportional to the introduction of force to the pivoting part. The power output is preferably at least 10% to 20% smaller than in a drive construction in which a direct drive is effected on a lever or guide lever. The translation between the engine and the lever or guide lever does not have to take place over the entire pivoting range, but in particular only in an end opening region in which the greatest weight forces are present.

Preferably, the drive comprises an electric motor, which is connected via a transmission with the coupling element. In this case, the coupling element can be mounted at one side on a gear spaced from its axis of rotation and on the opposite side to a hinge axis between a lever and a

Guide lever. As a result, when using standard components, such as gears, a drive device can be provided. In order to ensure rapid opening, the coupling element can achieve a maximum opening speed of the pivoting part in a central pivoting range of the pivoting part at constant speed of the drive. Because the user would like to achieve a rapid opening of the door in a medium pivoting range, but not be startled by a protruding flap at the beginning or be disturbed by a hard stop the flap at the end of the open position by loud noises. In this respect, the pivoting at different speeds is advantageous.

According to a further embodiment of the invention, the coupling element is connected to a spindle drive. This, too, can be easily attached to the holding plate or another component for moving the swivel fitting. be done. In addition, it is possible to provide a drive with a linkage which is movable by a windable rope. For the drive of the fitting, a rotary lever may be provided, which is mounted at a hinge point of a lever and is driven on a section extending beyond the lever.

The invention will be explained in more detail with reference to several exemplary embodiments with reference to the accompanying drawings. Show it:

Figures IA to IC different views of a flap fitting according to the invention in different Öffhungsstellungen;

Figures ID to IF a plurality of diagrams of the mechanical relationships in the flap fitting of Figures IA to IC depending on the opening angle;

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

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

Figure 3 D is a diagram of the mechanical relationships in the flap fitting according to Figures 3 A to 3C;

FIGS. 4A to 4C show several views of a further fitting in different open positions;

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

FIGS. 5A and 5B show two views of a flap fitting according to a further embodiment. In Figure IA, a flap fitting 1 is shown, which is mounted on a furniture body 2, preferably a cabinet furniture, in order to pivot a flap 3 upwards. For this purpose, a pivot member 4 is fixed to the flap 3, which is formed at an angle and at a portion 5 perpendicular to the plane of the flap 3 has a hinge axis 6, on which a guide lever 7 is mounted. Spaced from the axis 6, a further axis 8 is formed on the portion 5, on which a second guide lever 9 is rotatably mounted.

The guide lever 9 is on the side remote from the pivot part 4 end over a

Axis 16 connected to a first lever 11, which is also coupled to the guide lever 7 articulated about an axis 17. Spaced apart from the first lever 11, a second lever 12 is provided, which is connected at one side via an axis 13 with the guide lever 7 and at the other end via an axis 14 with a holding plate 20 hinged.

As can be seen in FIGS. 1B and 1C, the pivoting part 4 can be pivoted relative to the retaining plate 20 in order to open the flap 3. The flap fitting 1 shown is a fitting with seven hinge axes 6, 8, 16, 17, 13, 14 and 15. The arrangement of these axes and the geometry of

Lever 7, 9, 11 and 12 can be varied depending on the application.

In order to be able to move the pivoting part 4 more easily into the open position, a spring 25 is provided which is mounted at one end on an axle 24 which forms a pivot point for a lever 21 and a lever 22. The lever 21 is pivotally mounted on the hinge axis 13 and the lever 22 is fixed on the side facing away from the axis 24 on an axis 23 which is provided on the holding plate 20. The spring 25 is fixed on the side facing away from the axis 24 on a pin 26 which is adjustably held on a screw 27 in order to adjust the spring tension can Fe.

In the closed position of the flap 3, the spring 25 presses the pivoting part 4 in the closed position, since for opening the pivoting part 4 via the mechanism, the levers 21 and 22 initially moves toward each other with the axes 13 and 23 be so that the length of the spring 25 is slightly increased at the beginning. Only after an angle of for example 15 ° to 25 °, the length of the spring is reduced and the spring 25 now presses the pivot member 4 in an open position. After exceeding a dead center thus the opening movement is supported by the spring 25.

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, which is mounted on one side on the hinge axis 13 and on the opposite side on an axis 35 on a gear 33. The gear 33 is rotatably mounted about an axis of rotation 34, wherein the axis 35 is arranged at a distance from the axis of rotation 34. The gear 33 is driven by a motor 32 which is connected via an output shaft with a worm 40 and a plurality of gears 36, 37, 38 and 39 with the gear 33. By the gears 36 to 39, a translation is provided, so that the electric motor 32 can be made relatively small. The transmission 31 can also be modified as needed.

To automatically open the flap 3, the motor 32 drives the gear 33 from the position shown in FIG. 1A in a counterclockwise direction until at first the in

Figure IB shown position is reached. In this position, a line between the axes 13 and 35 of the coupling lever 30 is arranged approximately perpendicular to a radial between the axis of rotation 34 and the axis 35, that is, the opening of

Flap 3 is particularly fast in this position, since the movement of the coupling rod 30 and the guide lever 7 is largely rectilinear.

Upon further opening, the maximum opening position of the flap 3 is then achieved according to Figure IC. In this position, the gear 33 rotates the axis 35 in a direction which only slightly displaces the coupling lever 30 in a direction corresponding to the line of the axes 13 and 35 and rather pivots. Therefore, the opening movement of the flap 3 is comparatively slow at the end of the opening movement, while in a central region, the opening movement of the flap 3 at a constant speed of the gear 33 is large. FIG. 1D shows a diagram of the mechanical conditions when the flap fitting 1 is opened. With the line A, the force acting on the guide lever 7 on the axis 13 is shown. First, a certain force must be expended to open the flap 3 against the force of the spring 25, in which case a dead center is passed, in which the force of the spring 25 acts in the opening direction and the weight of the flap 3 is still relatively low due to the small opening angle , From a certain opening angle, however, the weight of the flap 3 presses the guide lever 7 and this force is getting bigger and bigger until the end position according to FIG.

With the graph B, the torque acting on the gear 33 when opening the flap 3 is shown graphically. Due to the design of the drive means with the coupling rod 30 and the gear 33, the torque is again slightly lower at the end of the opening process, which can be explained by the bearing of the axle 35 on the gear 33. For at the end of the opening process, turning the toothed wheel 33 causes only a slight movement of the flap 3.

Graph C schematically shows the necessary engine power, depending on the opening angle.

In FIG. IE, the engine power according to graph C is shown in a different resolution, the graph D showing the engine power as a function of 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 necessary engine power is less than in a motor that would drive the lever 12 directly, for example. As a result, the corresponding electric motor can be made comparatively small.

In Figure IF, a power curve for a direct drive is shown schematically in which, for example, the motor 12 drives the lever directly. Then the necessary engine power increases up to a maximum at the end of the opening process, at which the greatest weight force is present through the flap 3. By the higher power consumption at the end of the opening process, the engine must be designed according to high performance.

In the following embodiments, the fitting parts with the holding plate 20, the guide levers 7 and 9, the levers 1 1 and 12 and the pivoting part 4 are formed as in the first embodiment. These components will therefore not be described again in detail below.

In the flap fitting shown in Figures 2A to 2D, the coupling rod 30 'is modified and rotatably mounted to a modified gear 33'.

The gear 33 'does not rotate as in the first embodiment against the

Clockwise but clockwise around the flap 3 of a closed

Position (Figure 2A) initially in a slightly open position to move (FIG

2 B). By further turning the gear 33 'in the clockwise direction, the flap 3 is moved to the maximum opening position, as can be seen in Figure 2C.

FIG. 2D shows a perspective view of the flap fitting, from which it can be seen that the fitting parts are comparatively thin and compact. The mechanical forces, torques and powers are similar to those of the first embodiment.

A further embodiment of a flap fitting is shown in FIGS. 3A to 3C. The flap fitting comprises a rod-shaped coupling element 50 which is rotatably connected to the guide lever 7 on the axis 13. On the coupling element 50, a driver 54 is arranged in a central region, which comprises a spindle nut and on a rotatable spindle 53 is movable. The spindle 53 is fixed to a spindle housing 52 and driven by a motor 55. By rotating the spindle 53, the spindle nut moves with the cam 54 and thus can move the coupling element 50 from a closed position (Figure 3A) over a central opening position (Figure 3B) to a fully open position (Figure 3C). The spindle drive 51 is fixed to the holding plate 20. In Figure 3D, the mechanical relationships in the spindle drive 51 are shown in a graph. The graph G shows the force on the guide lever 7 in the region of the bearing 13, wherein the force on the guide lever 7 also increases with increasing opening angle.

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 is related to the orientation of the spindle 53, which is arranged at a predetermined angle relative to the guide lever 7. This also makes it possible to obtain a corresponding ratio in the area of the opening path.

This results in a motor power according to graph I, which is also lower at the end than in a middle range.

A further embodiment of a flap fitting is shown in FIGS. 4 A to 4 C, in which the drive device comprises a coupling element 60 in the form of a lever which is rotatably connected to a further lever 61 via an axis 62. The lever 61 is also fixed to a further axis 63 on the furniture body 2 or on a corresponding holding plate 20. For opening and closing the flap 3, a rope 64 is provided, which on one side on the axis

62 is fixed and on the opposite side to a roll 65 wound up bar. The roller 65 is drivable via a toothed segment 66, which is connected via a gear with an electric motor 67.

By pulling on the cable 64, the flap 3 is first of a closed

Position (Figure 4A) in a slightly open position moves (Figure 4B). When the cable 64 continues to be wound onto the roller 65, the flap opens to a maximum open position, as shown in FIG. 4C.

FIG. 4D shows the mechanical conditions when the flap fitting is opened. The graph K shows the force acting on the rope 64 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 position of the axis 62 when opening the flap fitting changes and the balance of power become cheaper. The graph J, however, shows the force on the guide lever 7 in the region of the axis 13, which increases continuously with increasing Öffhungswinkel.

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

In FIG. 4E, the power curve of the motor in the drive device is with the

Rope 64 shown enlarged. The graph M shows the power curve, which demands different power depending on the opening angle of the electric motor 67, whereby just at the maximum opening angle, despite the weight force through the flap 3, the power drops slightly again.

FIG. 5A shows a further embodiment of a flap fitting in which the guide lever 7 is moved via a coupling element 70, which is designed as a lever which can be pivoted about an axis 71 which at the same time is also the axis 14 of the lever 12. The coupling element 70 is further coupled via an axis 72 with the guide lever 7, wherein the axis 72 with the axis

13 is identical. However, the coupling element 70 protrudes beyond the lever 12 and includes a drive 73 which is pivotable together with the coupling element 70. The drive 73 meshes via a toothed wheel with a toothed segment 74, which is designed to be fixed and, for example, fixed to the holding plate 20. By turning the coupling dementes 70 about the axis 71 of the guide lever 7 and the pivot member 4 is moved, whereby the flap 3 is moved from the closed position (Figure 5A) in an open position (Figure 5B).

In the illustrated embodiments, only a driven opening and closing of the flap fitting is explained. Of course it is also possible, instead, the flap fitting manually to open and close. Then, between the drive and the coupling element, a clutch is provided as an overload clutch, for example a slip clutch arranged on the transmission, which permits a manual movement of the pivoting part relative to the retaining plate. In addition, it is possible to connect the drive for the flap fitting with a controller so that via keys, switches, sensors or a remote control opening or closing of the flap fitting takes place. In addition, touch sensors, radio sensors and other sensors and switches for the control can be arranged on the furniture body.

Claims

claims

1. flap fitting, in particular for cupboard furniture, with a pivoting part (4) which is connectable to a flap (3) and is mounted on two guide levers (7, 9), and a holding plate (20) which is 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 pivotally connected and a second lever (12) with a Guide lever (7) is pivotally connected, characterized in that on a lever (11, 12) or guide lever (7, 9) a coupling element (30, 30 ', 50, 60, 70) is provided, which by a drive (32, 55, 67, 73) for moving the pivoting part (4) is movable.

2. flap fitting according to claim I _5, characterized in that the coupling element (30, 30 ', 50, 60, 70) on a hinge axis (13) with the guide lever (7) and the lever (12) is connected.

3. flap fitting according to claim 1 or 2, characterized in that the drive (32, 55, 67, 73) adjacent to the holding plate (20) on the side facing away from the pivot part (4) is arranged.

4. flap fitting according to one of claims 1 to 3, characterized in that the pivoting part (4) in a Öfmungsbereich, preferably between an open position of at least 45 ° to 110 °, by clamping and friction forces can be fixed.

5. flap fitting according to one of claims 1 to 4, characterized in that a spring (25) is provided, by means of which the pivoting part (4) in a closed position in the closed and after pivoting of the pivoting part (4) beyond a dead center in the open position is biased.

6. flap fitting according to one of claims 1 to 5, characterized in that the drive power of the drive (33, 55, 67) for pivoting of the pivoting part (4) is different and the opening angle of the pivoting part (4) in which the greatest adjusting force is used, not the opening angle at which the largest power consumption of the drive (32, 55, 67) takes place.

7. 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) is connected.

8. Klappenbeschiag 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 the axis of rotation (34) is mounted and on the opposite side a hinge axis (13) between a lever (11) and a guide lever (7) is mounted.

9. 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 a constant speed of the drive (32) reaches a maximum opening speed of the pivoting part (4).

10. flap fitting according to one of claims 1 to 9, characterized in that the coupling element with a spindle drive (52 to 54) is connected.

11. flap fitting according to one of claims 1 to 9, characterized in that the drive comprises a linkage (60, 61) which is movable by a windable cable (64).

12. Flap fitting according to one of claims 1 to 9, characterized in that the coupling element comprises a rotary lever (70) which is mounted on a hinge point (71) of a lever (12) and driven on a via the lever (12) extending portion is.