Wing fitting, arrangement of a wing fitting and an electric drive, and piece of furniture having such an arrangement

Abstract

The invention relates to a wing fitting (10) having a housing (11) for being attached to a furniture body (2) which has at least one actuating arm for an associated wing (8) and a force accumulator which is coupled to the actuating arm in order to drive the actuating arm. The wing fitting (10) is characterized by a drive interface for being coupled to an electric drive (50), the drive interface comprising a linearly guided carriage (42, 60) having at least one engagement means for the electric drive (50), and the linearly guided carriage (42, 60) being coupled to the actuating arm via a transmission element. The invention further relates to an arrangement which has a wing fitting (10) and an electric drive (50) and is characterized in that the wing fitting (10) has a drive interface having a linearly guided carriage (42, 60) by means of which the electric drive (50) is coupled to an output element. The invention further relates to a piece of furniture (1) which has a furniture body (2) and at least one wing (8) associated therewith and has such an arrangement.

Description

[0001] Flap fitting, arrangement of a flap fitting and an electric drive and furniture with such an arrangement

[0002] The invention relates to a flap fitting with a housing for mounting on a furniture carcass and with at least one actuating arm for an associated flap, as well as a power storage device coupled to the actuating arm to drive it. The invention further relates to an arrangement comprising a flap fitting and an electric drive. The invention also relates to a piece of furniture comprising a furniture carcass and at least one flap associated therewith, and an arrangement consisting of a flap fitting and an electric drive.

[0003] Furniture, especially kitchen furniture or other household furniture such as base cabinets or wall cabinets, typically has a front-opening cabinet body to which movable components are mounted, guided by fittings. Particularly in wall cabinets, flaps are frequently used as movable components to close the cabinet body. These flaps are supported and guided by at least one, usually two, side-mounted flap hinges. The hinges allow the flap to open upwards (pivot upwards), pivoting, for example, around an imaginary horizontal pivot axis located in the upper part of the cabinet body. Other upward opening movements of the flap are also conceivable.

[0004] Advantageously, a force storage device is arranged in the flap fitting, which acts on the flap via an actuating arm to counteract the weight of the flap when it is partially or fully open, thereby holding the flap in the (partially) open position. The force storage device can also be used to move the flap to its open or closed end position.

[0005] Especially with furniture that has large and heavy flaps, or with furniture such as tall or wall cabinets whose flaps may be out of reach of a user when open, an electric drive can make use easier and simpler.

[0006] From publication AT 18049 U1, a flap fitting is known in which an electric drive is spatially separated from the flap fitting within the furniture body, with the drive energy generated by the drive being transmitted via a hydraulic line. The flap fitting contains a hydraulic assembly that acts on an actuating arm coupled to the flap. The flexible hydraulic line allows the electric drive to be mounted at any position within the furniture body; however, this makes installation more complex, as two components must be attached independently within the furniture body, and the hydraulic line must be routed within or on the furniture body. As an alternative to a hydraulic line, a cable or a Bowden cable is described as a transmission element.

[0007] It is an object of the present invention to create a flap fitting that can be easily mounted in a furniture body and, if necessary, easily supplemented with an electric drive.

[0008] This problem is solved by a flap fitting, an arrangement comprising a flap fitting and an electric drive, and a piece of furniture with such a flap fitting, each possessing the features of the respective independent claim. Advantageous embodiments and further developments are the subject of the dependent claims.

[0009] A flap fitting according to the invention is characterized in that the flap fitting has a drive interface for coupling an electric drive, wherein the drive interface comprises a linearly guided slide with at least one coupling means for the electric drive, and wherein the linearly guided slide is coupled to the actuating arm via a transmission element.

[0010] The drive interface allows the drive to be coupled to the flap fitting as needed. Forces acting in two directions can be easily transmitted to the linearly guided carriage. The transmission element can advantageously translate the linear movement into a required movement, such as a pivoting movement of the actuating arm. Furthermore, the transmission element allows for a suitable adjustment of the transmission ratio between the linear movement and the resulting movement of the actuating arm. This enables different types of fittings to be equipped with an identical drive interface, allowing a single drive model to be used to equip or retrofit various fittings. Another advantage of the linear guide is that it only transmits forces in the direction of movement to the drive, thus reducing stress on the drive and its coupling.Any lateral forces that may occur are absorbed by the linear guide itself and do not need to be absorbed by the drive.

[0011] The linearly guided carriage also allows the drive interface to be very flat in one spatial direction. In the case of a flap fitting intended to have a particularly low profile, the linear guide can then be horizontally aligned and does not impede the fitting's low profile.

[0012] In an advantageous embodiment of the flap fitting, the at least one engagement element of the linearly guided slide is accessible through at least one opening in the housing. The slide can be guided within this at least one opening in the housing, so that the guidance is provided directly and in a space-saving manner by the housing of the flap fitting itself. Alternatively, the linearly guided slide can be arranged within the housing adjacent to the opening.

[0013] The drive interface can be located on one side of the housing, preferably on a longitudinal side. However, it is also conceivable that an opening is formed on two opposite sides of the housing, through which the at least one engagement element of the linearly guided slide is accessible, so that the drive can be used alternatively on both sides of the flap fitting.

[0014] A coupling element can be an engagement opening in the linearly guided slide. A linearly displaceable drive pin of the drive can then engage in this opening for power transmission.

[0015] In a further advantageous embodiment of the flap fitting, the housing has externally accessible fastening elements for connection to the electric drive. Preferably, the housing is manufactured as a stamped / bent sheet metal part and features flared brackets as fastening elements. The drive can be easily attached to these fastening elements. The fastening elements can, for example, have undercuts that are engaged by at least one detent element of the drive, thus enabling tool-free assembly. An inverse arrangement of the fastening elements is also conceivable.

[0016] In a further advantageous embodiment, the flap fitting comprises a mounting element for attaching the flap and a multi-segment lever mechanism by which the housing and the mounting element are connected and guided movably relative to each other, with the actuating arm being formed by a link of the lever mechanism. The drive interface can be used in a fitting with simple kinematics, where the actuating arm is directly coupled to the linearly guided slide via the transmission element. However, it can also be implemented in fittings with more complex kinematics, where the flap is guided by a multi-segment lever mechanism and where the actuating arm is formed by one of the links of the lever mechanism.

[0017] Within the scope of this application, the terms "joint axis" or "bearing axis" refer both to the abstract axis of rotation or pivoting between two articulated components and to its implementation in the form of, for example, a bolt, a shaft, or a comparable mechanical element. If the position of an axis of rotation is defined, this corresponds in practice to the position of the radially central longitudinal axis of the mechanical element.

[0018] Furthermore, the term "fasten" encompasses both direct (immediate) and indirect (mediated) fastening, including fastening via one or more intermediate elements. The same applies analogously to the terms "mount," "act," and "be hinged." Accordingly, the term "fixed to" does not require that an element be directly attached to the other element to which it is fixed.

[0019] In a further advantageous embodiment of the flap fitting, the energy storage unit is adjustable by the adjusting device to a force corresponding to the weight of the flap, so that the flap closes automatically in a closing range and is held in an opening range by the energy storage unit, or the flap is moved in the opening direction and is held in at least one open end position by the energy storage unit. In such a case, it can be provided that the electric drive only applies the necessary forces for moving the flap. In a further advantageous embodiment, the flap fitting has a mounting element for attaching the flap and a lever mechanism by which the housing and the mounting element are connected to each other and guided movably relative to each other, wherein the actuating arm is formed by a link of the lever mechanism or by a single-link lever mechanism.

[0020] In a further advantageous embodiment of the flap fitting, an end stop is provided to limit the displacement range of the linearly guided slide. Preferably, the displacement range is adjustable by means of an adjustment device to set an end position of the flap. Thus, the linearly guided slide is not only used for coupling with the drive, but can also have an additional function in defining or setting an end position of the flap, in particular the maximum opening position.

[0021] In a further advantageous embodiment, the flap fitting has a damper unit with at least one damper that serves to dampen the opening and / or closing of the mounting element relative to the housing. Preferably, the at least one damper can be arranged in or on the linearly movable slide. In this case, the linearly movable slide can assume an additional function in a material- and space-saving manner and be used for opening and / or closing damping.

[0022] Advantageously, at least one stop unit is provided, which has a stop surface against which the slide can directly abut with an end stop surface. Advantageously, a stop surface is provided against which the at least one damper can abut with an actuating surface. With one and the same stop element, the end position of the flap and the point of damping engagement as the end position is approached can thus be determined. This is particularly advantageous for the open position of the flap. The resulting linear movement between the damper and the stop also advantageously provides actuation that does not stress the damper, especially if the at least one damper is a linear damper with a cylinder and a piston rod.Preferably, the stop surfaces of the at least one stop unit are spaced apart from each other in the direction of movement of the slide, and in particular, the distance between the stop surfaces is adjustable. The distance determines how far before the end stop the damping begins. If the at least one stop unit itself is also adjustable in the direction of movement of the slide, the end stop can be set, and the point where the damping begins advantageously shifts automatically as well.

[0023] In a further advantageous embodiment, the flap fitting has two stop units, one of which is arranged in front of and the other behind the linearly guided slide in the direction of movement. One of the stop units then defines the damping engagement point and, if applicable, also the end position for the opening movement, while the other stop unit defines the damping engagement point and, if applicable, also the end position for the closing movement.

[0024] In a further advantageous embodiment, fastening interfaces are arranged on the flap fitting which enable a plug-in and / or slide-on and / or a pivot-slide movement for fixing the drive to the housing of the flap fitting, wherein at least one fastening interface locks with the drive in an assembly end position and essentially prevents movement of the drive in a direction of movement opposite to that of the linearly guided slide.

[0025] An arrangement according to the invention, comprising a flap fitting and an electric drive, is characterized in that the flap fitting has a drive interface with a linearly guided slide, to which the electric drive is coupled with an output element. A piece of furniture according to the invention, comprising a furniture body and at least one flap associated therewith, accordingly has such an arrangement. The advantages previously described in connection with the flap fitting result.

[0026] The invention is explained in more detail below with reference to an exemplary embodiment and the accompanying figures. The figures show:

[0027] Figure 1a shows a piece of furniture with a hinged flap and two flap fittings, one of which is coupled to a drive, in a spatial view;

[0028] Figure 1b shows the furniture from Figure 1a in a cross-section with the flap closed; Figure 1c shows the furniture from Figure 1a in a cross-section with the flap swung upwards;

[0029] Figures 2a-d each show a spatial representation of the flap fitting with the drive of the furniture from Figures 1a - 1c in different positions and views;

[0030] Figure 3a is a spatial exploded view of the flap fitting from the previous figures;

[0031] Figure 3b is an enlarged section of Figure 3a showing components of a damping unit;

[0032] Figures 4a and 4b are each an enlarged representation of the area of ​​the flap fitting from Figures 1b and 1c;

[0033] Figures 5a-c each show a sectional view of the furniture similar to figures 4a, b, showing the damping unit in different opening positions of the flap;

[0034] Figures 6a-c each show a sectional view of the furniture with a view of the damping unit in different positions of the flap during damping in the opening direction;

[0035] Figures 7a-c each show a sectional view of the furniture with a view of the damping unit in different positions of the flap in the open position with differently set opening angles;

[0036] Figures 8a-c each show a sectional view of the furniture with a view of the damping unit in different positions of the flap in a partially open position with changed settings of the damping unit; and

[0037] Figure 9 shows two spatial detail views of a stop unit of the damping unit; and Figure 10 shows a spatial representation of a housing of a flap fitting with a drive interface in a second embodiment.

[0038] In this description, the terms "left" and "right" refer exclusively to the exemplary representation chosen in the respective figures. The terms "top" and "bottom" refer to the natural installation position of a flap fitting in a piece of furniture, where a flap pivots around a horizontal axis and swings upwards to open. The terms "front" and "back" also refer to this installation position. The front of the furniture is the side facing the user, where the flap is also located.

[0039] In all figures, identical reference symbols denote identical or equivalent elements. For clarity, not all elements in some figures are labeled with a reference symbol.

[0040] Figures 1a-1c show a piece of furniture 1 with two flap fittings 10 according to the invention, which guide a flap 8. Figure 1a shows the furniture in a three-dimensional view with the flap 8 closed and from a top-down angle. Figures 1b and 1c show cross-sections through the furniture 1, with the section plane running parallel to a side wall 3 of the furniture body 2. Figure 1b shows the furniture 1 with the flap 8 closed, and Figure 1c shows the furniture 1 with the flap 8 swung upwards.

[0041] The piece of furniture 1 is, for example, a wall cabinet, in particular a kitchen wall cabinet, with a front-opening cabinet body 2, which can be closed by the flap 8 guided by the flap fittings 10. The cabinet body 2 has side panels 3, a bottom panel 4, and a top panel 5. To organize the interior of the cabinet body 2, one or more intermediate shelves 6 can be inserted at different heights in this example. The cabinet body 2 also has a back panel 7.

[0042] The top surface 5 is positioned below the top edge of the side walls 3. The upper surface of the top surface 5 is a few tens of millimeters (mm), specifically between 35 and 55 mm, away from the top edge of the side walls 3. The side walls 3 project beyond the top surface 5 by the height of an overhang 3'. This creates an upwardly open space above the top surface 5, with a height equal to the overhang 3'.

[0043] The top panel 5 can alternatively be positioned below the top edge of an extension, the extension being an extension of the side walls 3 and thus forming the overhang 3'. When using a suitable extension, the construction of the furniture body 2 does not need to be modified to achieve the lowered top panel 5. The flap fitting 10 can then be attached to the extension with or without an additional mounting plate.

[0044] In an alternative furniture design, instead of a single flap 8 guided by the flap fittings 10, several flaps arranged vertically one above the other are provided, each with its own flap fittings. The side walls are single-piece and correspondingly taller. To divide the interior, the entire interior is subdivided into usable storage space and areas for the fittings by several intermediate shelves, whereby the flaps arranged on the furniture can conceal both the storage spaces and the areas for the fittings. An intermediate shelf arranged below the flap fittings is also to be considered a top shelf 5 within the meaning of this patent application.

[0045] In the illustrated piece of furniture 1, two flap fittings 10 are arranged in the space above the top surface 5, one of which is coupled to an electric drive 50.

[0046] As shown in Figure 1a, each flap fitting 10 has a housing 11 with which the flap fitting is mounted on the top panel 5 and / or on the corresponding side panel 3. A mounting plate (not shown) may be provided for this purpose. The mounting plate may, if necessary, allow for positional adjustment of the flap fitting 10 relative to the furniture carcass 2. The two flap fittings 10 are advantageously identical in construction, which simplifies manufacturing, storage, and assembly. If the flap fittings 10 are to be mounted on the side panels 3, a corresponding mounting plate may also be designed to be identical in construction so that it can be used on both side panels 3.As can be clearly seen in Figure 1b, the flap 8 extends essentially over the entire height of the side walls 3, leaving only gaps of a few millimeters at the top and bottom of the furniture body, as well as on the left and right, to prevent collisions with doors or flaps of other furniture located above, below, or to the side of the illustrated furniture 1. In particular, the flap 8 also closes the opening facing forward towards the user in the space above the top panel 5, in which the flap fittings 10 are located.

[0047] The flap fitting 10 has a lever mechanism 20, which in this case is designed as a 7-joint lever mechanism. The lever mechanism 20 comprises several interconnected links, specifically a support lever 23, a control arm 22, a transmission lever 21, and a transmission rod 24, which are described in more detail in connection with Figures 3 to 5c. The flap 8 is guided through the flap fitting 10 via the lever mechanism 20, with a mounting element 12 being arranged to attach the flap 8 to the lever mechanism 20. This mounting element projects at least partially into a recess 9 in the flap 8.

[0048] As shown in particular in Figure 1c with the flap 8 pivoted upwards, i.e., opened, no part of the lever mechanism 20 extends vertically upwards beyond the housing 11 of the flap fitting 10. Preferably, no part of the mounting unit 12 also extends vertically upwards beyond the housing 11 of the flap fitting 10.

[0049] As shown in Figure 1b with the closed flap 8, none of the links of the lever mechanism 20 collide with the top plate 5 when closed. The same applies to the opening and closing of the flap 8, so that no recess or similar feature is necessary on the top plate 5 for the lever mechanism 20 of the flap fitting 10 shown. Only the mounting unit 12 protrudes minimally in the vertical direction below the housing 11 when the flap 8 is closed. However, this is not a problem, as the mounting unit 12 is always positioned in front of the top plate 5.

[0050] Because no component of the flap fitting 10 projects beyond the projection 3', another piece of furniture, a cover, or a cornice can be arranged above the furniture 1 shown without any element of the flap fitting 10 or the flap 8 itself colliding with it. The flap fitting 10 has a force storage unit 30. This unit serves to hold the flap 8 in intermediate positions, and in particular in a fully open position, as well as to hold the flap 8 closed. It can also be provided that the force storage unit 30 closes or opens the flap 8 below a first opening position and / or above a second opening position, possibly against the resistance of the damper unit 40. Figure 1c shows an example of a closing range S within which the flap 8 is brought into the closed position or held in the closed position by the force storage unit 30.Furthermore, an opening area O is shown in which the flap 8 experiences a force in the direction of a fully open position OE from the energy storage unit 30. Whether the energy storage unit 30 has a holding or actively moving function is determined, among other things, by the (adjustable) coupling between the energy storage unit 30 and the lever mechanism 20, and by the geometry and weight or weight distribution of the flap 8. A weight force G acting on the flap 8 is also shown in Figure 1c.

[0051] In the illustrated embodiment, the transmission lever 21 of the lever mechanism 20 represents an actuating arm through which the power storage unit 30 acts on the flap 8 to close, open and / or hold it in an open position.

[0052] In Figures 2a to 2d, the flap fitting 10 with the drive 50 is shown separately from the furniture 1 in a three-dimensional oblique view. Figures 2a, b, and d show the flap fitting 10 in a position where an attached flap is closed, and Figure 2c in a position where a connected flap is swung upwards. Hereinafter, the position according to Figures 2a, b, and d will also be referred to as the closed position, and the position according to Figure 2b as the open position. Figure 2c also shows a partial section of the flap fitting 10. In Figure 2a, the drive 50 is coupled, whereas in Figures 2b, c, and d, it is shown separated from the flap fitting 10.

[0053] Figures 2a-d show that the housing 11 is essentially U-shaped and open at the top. Two U-shaped elements are inserted into the housing 11 from above, extending over the entire or almost the entire length of the housing 11 and, in a sense, completing the housing 11 at the top. The approximately centrally located U-shaped element is a mounting rail 31 for the energy storage unit 30, and the U-shaped element located to the side of it is a mounting rail 41 for a damper unit 40.

[0054] The damper unit 40 slows the movement of the flap 8 as it approaches the closed and / or open end position. In the embodiment shown here, the drive interface for connection to the drive 50 is integrated into the damper unit 40.

[0055] In the illustrated example, the housing 11 is manufactured as a stamped and bent sheet metal part. As shown in Figure 2b, mounting interfaces 112 to 114 are formed on at least one side 111 of the housing, by means of which the drive 50 with its housing 51 can be attached to the flap fitting 10. The mounting interfaces are designed as angles. Preferably, the mounting interfaces are arranged at two opposite ends of the housing side 111. Mounting interfaces 112 and 113 are punched from the material of the housing 11 and bent accordingly into the angled shape shown. Mounting interface 114 is bent from a projection on an edge, here an upper edge, of the housing 11.

[0056] An opening 115 is provided on the housing side 111, through which a linearly guided slide 42 is accessible. In this accessible area, the linearly guided slide 42 has a coupling interface 441 to which the drive 50 can be coupled with an output element 53. The coupling interface 441 of the slide 42 is designed here as an engagement opening and the output element 53 of the drive as a pin (see Fig. 2d).

[0057] The linearly guided carriage 42 has guide surfaces 424. In this embodiment, these guide surfaces 424 are designed as grooves. The guide surfaces 424 of the carriage 42 bear against a linear guide track 413, and the carriage 42 is displaceable along the guide track 413. In this embodiment, the guide track 413 is formed on the mounting rail 41. The mounting rail 41 is fixed to the housing 11 and is thus arranged immovably relative to the housing 11.

[0058] Figures 2a-d further show the mounting element 12, which in this example comprises a mounting plate 121 and a mounting cup 122. The mounting cup 122 is the part of the mounting element 12 that is recessed in the cup recess 9 of the flap 8. The mounting plate 121 rests on the surface of the flap 8 and has mounting holes for attaching the mounting element 12 to the flap 8 using screws or similar fasteners. Alternatively or additionally, a clamping mechanism can be provided for fastening, which clamps the mounting cup 122 in the cup recess 9. The mounting plate 121 and the mounting cup 122 can, for example, be formed in one piece from a single sheet metal element.

[0059] Figure 2c shows the flap fitting 10 in a partially open position and in a partial section. The partial section removes the walls of the housing 11 and the mounting rail of the damper unit 41 on the side of the damper unit 40, thus providing insight into the construction of the damper unit 40 and the coupling interface 441, as well as their connection to the lever mechanism 20. These components are explained below in connection with Figures 3a and 3b.

[0060] Figure 2d shows the arrangement from a different perspective, making the side of the drive 50 facing the flap fitting 10 visible.

[0061] The housing 51 of the drive 50 also has mounting interfaces 512, 513 and 514, which are designed to be complementary to the mounting interfaces 112, 113 and 114 of the housing 11, so that the housing 50 can be attached to the housing side 111 and the mounting interfaces 112, 113, 114 and 512, 513, 514 engage with each other. Several locking elements 516 are arranged on the mounting interfaces 512 to 514, which engage behind parts of the mounting interfaces 112 to 114 and thus secure the drive 50 to the flap fitting 10. The mounting interfaces 512, 513 and 514 are designed here as recesses which are complementary to the angles of the housing 11, so that the housing 50 can be attached to the housing side 111 and the angles of the mounting interfaces 112, 113, 114 can engage in the corresponding recesses of the mounting interfaces 512, 513, 514.

[0062] In the area of ​​the housing side 111 where the linearly displaceable slide 42, and in particular the coupling interface 441, is accessible, an elongated opening 515 is also provided on the housing 51 of the drive 50, so that the coupling interface 441 and the output element 53 can couple with each other. Preferably, the output element 53 is spring-loaded and can be pressed in, so that the drive 50 can be mounted on the flap fitting 10 in any position of the output element 53 relative to the engagement opening 441. As soon as the output element 53 assumes a corresponding position with the coupling interface 441, the output element 53 couples with the linearly guided slide 42. The output element 53 can be coupled to the linearly guided slide 42 via a reinforcing profile 44.

[0063] As an alternative to a spring-loaded output element 53, the output element 53 can be provided to be in a "freewheeling state" when the drive 50 is not actively moving, in which it can be easily moved in its position without force. For assembly, the output element 53 is then pre-threaded into the coupling interface 441, the drive is pushed into the correct position, and then slid onto the mounting interfaces 112, 113, 114.

[0064] The pin visible in Figure 2d represents the output element 53 of the drive 50, which is designed as a linear drive and can move the pin along the opening 515 in a controlled manner. Operating elements 52 are provided on the housing 51 for setting parameters of the drive 50 and / or for status indication. The drive 50 can be actuated, for example, to move the pin via a wired or wireless remote control that is easily accessible to the user. With a wired remote control, an operating element, e.g., a push button or switch, can be located directly on the furniture 1.

[0065] Within the flap fitting 10, the linearly movable slide 42 is coupled to the lever mechanism 20 via a push and pull rod 45 in order to transmit movement of the linearly guided slide 42 to the lever mechanism 20 and thus to the flap 8. In this embodiment, the coupling is effected via a coupling lever 46.

[0066] Figure 3a shows the flap fitting 10 in a three-dimensional exploded view. In Figure 3a, the components of the energy storage unit 30, the damping unit 40, and the mounting element 12 are grouped by means of dashed lines. Components not included in any of these groups are the housing 11, which is clearly recognizable here as U-shaped, and the links of the lever mechanism 20. The energy storage unit 30 contains the actual energy storage device. In the example shown, the energy storage device is formed by four springs 33. The springs 33 are compression springs arranged side by side and thus subjected to parallel force. The springs 33 are held at one end by the spring retainer 32. The other end of the springs 33 acts on an energy storage slide 34, which is slidably guided.The power storage slide 34 has four round-cylindrical recesses that accommodate the four springs 33 and prevent the springs 33 from deflecting outwards under compressive load. The power storage slide 34 is closed at its front end, so that the front ends of the springs 33 rest against the power storage slide 34.

[0067] The power storage slide 34 executes a linear movement in the longitudinal direction of the housing 11 via a guide. This linear movement of the slide 34 is transmitted to the lever mechanism 20 via a push rod 35 and an adjusting device 36. The push rod 35 is pivotally coupled to the power storage slide 34 in order to transmit the linear movement of the power storage slide 34 to a pivoting movement of the adjusting device 36, which in turn acts on the lever mechanism 20 with an adjustable transmission ratio.

[0068] In the assembly of the mounting element 12, in addition to the mounting plate 121 and mounting cup 122, a cantilever 123 can also be seen. This cantilever 123, which is either fixed or adjustable to a certain extent in the mounting cup 122, provides the pivot points for the lever mechanism 20 on the mounting unit 12. This will be explained in more detail in connection with the following Figures 4a and 4b.

[0069] In Figure 3b, the elements assigned to the damper unit 40 from Figure 3a are shown enlarged and further separated from each other.

[0070] The damper unit 40 comprises a damper 43, which is arranged in a slide 42 that is linearly displaceable relative to the housing 11. The slide 42 has a receiving chamber 421 in its upper section, into which the damper 43 is inserted. The receiving chamber 421 has end walls 422 at the front and rear in the direction of movement. Each end wall 422 has an opening 423 through which the damper 43 can be accessed. Guide surfaces 424 are provided on both sides of the lower part of the receiving chamber 421, which serve to guide the slide 42 on the mounting rail 41 or the housing 11.

[0071] The mounting rail 41 has a U-shaped structure with a base 411 and two legs forming side walls 412. A lower section of each side wall 412 is bent inwards, so that the U-profile of the mounting rail 41 is extended into a C-profile. The bends form guide tracks 413 that engage in the guide surfaces 424 of the slide 42 to guide it longitudinally along the mounting rail 41. Furthermore, the rectangular-section receiving space 421 is guided within the U-profile of the mounting rail 41.

[0072] The carriage 42 is moved when the flap 8 is moved via a push and pull rod 45, which is pivotally coupled to the carriage 42 at one end. Alternatively, the carriage 42 is moved via the drive 50 and then in turn moves the flap 8.

[0073] At its other end, the push and pull rod 45 is coupled to the lever mechanism 20 via a coupling lever 46. A U-shaped reinforcing profile 44 is mounted on a lower part 425 of the slide 42 for reinforcement and connected by bolts. The reinforcing profile 44 has a coupling interface 441 approximately in the middle for connecting the electric drive unit 50.

[0074] The coupling lever 46 is a single-sided, two-armed lever that is pivotally mounted in a fixed position relative to the housing 11 of the flap fitting 10 in a bearing axis 461. In the illustrated embodiment, the bearing axis 461 corresponds to the pivot axis (see reference numeral 26 in Figures 4a, b) on which the support lever 23 is mounted. The coupling lever 46 is connected to the push and pull rod 45 in a coupling axis 463. In a coupling axis 462, the coupling lever 46 is connected to the transmission lever 21 and the support lever 23 of the lever mechanism 20.

[0075] The coupling lever 46 is thereby fixed to the movement of the support lever 23. This fixation can also be achieved solely at the transmission lever 21. Movement of the lever mechanism 20 when opening or closing the flap 8 causes the coupling lever 46 to pivot and, transmitted via the push and pull rod 45, to a linear displacement of the slide 42. Two stop units 47 and 48 are assigned to the movable slide 42. The stop unit 47 is fixedly mounted to the housing 11 in the rear area of ​​the flap fitting 10, which, in the illustrated embodiment, is done indirectly via the mounting rail 41. The stop unit 48 is slidably arranged relative to the housing 11 in a more forward area of ​​the flap fitting 10. In this embodiment, the stop unit 48 is slidably arranged on the mounting rail 41 on the housing 11.When the flap fitting closes, the slide 42 moves towards the rear stop unit 47, whereas when the flap 8 opens, the slide 42 moves towards the front stop unit 48. The stop unit 47 dampens the closing movement, and the stop 48 dampens the opening movement. The damper 43 is actuated upon approaching the stop unit 47 or 48 by stop plungers 472 and 482, respectively. The stop plungers 472 and 482 protrude from a respective base body 471 and 481 of the corresponding stop unit 47, 48. In the illustrated embodiment, both stop units 47 and 48 have adjustable, extendable stop plungers 472 and 482, respectively, which can be adjusted by means of an adjusting device. The adjusting device may include adjusting rings 473 and 483 for this purpose. It may also be provided that only one or none of the stop units 47, 48 has an adjustment device.Details of the construction of the striking units 47, 48 are explained in more detail in connection with Figure 9.

[0076] Figures 4a and 4b show the upper section of the furniture body 1 from Figures 1b and 1c enlarged for the closed position in Figure 4a and for the open position in Figure 4b. In these two figures, the levers of the 7-joint lever mechanism 20 and their joint axes are indicated.

[0077] In this embodiment, the lever mechanism 20 comprises four elements: a transmission lever 21, a control arm 22, a support lever 23, and a transmission rod 24. The transmission lever 21 is pivotally guided on the housing 11 and preferably on the mounting rail 31 via the control arm 22 and the support lever 23. The control arm 22 and the support lever 23 are each pivotally mounted at one end on a pivot axis 25, 26, indirectly on the housing 11. The corresponding pivot axes 25, 26 are thus fixed relative to the housing 11. The transmission lever 21 is coupled at one end and in a central region to a free pivot axis 29 on the free end of the control arm 22 on the one hand and in a central region of the support lever 23 on the other. The transmission lever 21 and the support lever 23 intersect accordingly.

[0078] The second free end of the transmission lever 21 projects forward beyond the housing 11 into the mounting cup 122. Within the area of ​​the mounting cup 122, the transmission lever 21 is pivotally connected to the boom 123 via a first articulation axis 27, which is fixed to the mounting element 12. The weight force G of the flap 8 is transmitted from this first articulation axis 27 via the transmission lever 21 and the support lever 23 or the control arm 22 to the articulation axes 25, 26 and thus to the housing 11. The first articulation axis 27 moves along a motion trajectory that is determined by the geometry and arrangement of the transmission lever 21, the control arm 22, and the support lever 23.

[0079] The free end of the support lever 23 is pivotally attached to the boom 123 via a transmission rod 24, with a second pivot axis 28 that is also fixed to the mounting element 12. This transmission rod 24 transmits a pivoting movement of the flap 8 about the first pivot axis 27 to the support lever 23 and thus also to the transmission lever 21. As a result, pivoting the flap 8 causes the transmission lever 21 to extend from the housing 11, resulting in a coupled pivoting and sliding movement of the flap 8.

[0080] In this embodiment, the arm 123 on the mounting element 12 accommodates both pivot axes 27 and 28. The arm 123, which is formed by the mounting element 12, can consist of several parts, so that the pivot axes 27 and 28 can be held on different parts of the mounting element 12. It is essential that the pivot axes 27 and 28 move together at the same distance relative to the front panel, provided that a front panel adjustment is provided on the mounting element 12.

[0081] Figures 5a-c, 6a-c, 7a-c and 8a-c each show the furniture 1 in its upper area with the flap fitting 10, similar to figures 4a, b, but the flap fitting 10 is partially cut away and shown with a view of the damping unit 40.

[0082] Figures 5a-c illustrate the closing damping, figures 6a-c the opening damping, figures 7a-c the setting of the maximum opening angle, and figures 8a-c the setting of the damper stroke. When the slide 42 moves towards one of the stop units 47, 48, the respective stop plunger 472 or 482 penetrates the opening 423 of the end wall 422 of the slide 422 that corresponds to the respective stop unit 47, 48. The respective stop plunger 472 or 482 then enters the receiving chamber 421 and compresses the damper 43, which is floatingly mounted within the receiving chamber 421.

[0083] When the flap 8 closes (see Figs. 5a-c), the slide 42 moves, for example, backwards along the mounting rail 41 (see Fig. 5a), causing the plunger 472 to enter the receiving chamber 421 and contact the actuating surface 433 on the cylinder 431 (see Fig. 5b). The opposite actuating surface 433 on the piston rod 432 rests against the inner end wall 422. The compression of the damper 43 dampens the approach movement of the flap 8 to the closed position (see Fig. 5c).

[0084] When the flap 8 is opened (see Fig. 6a-c), conversely, as it approaches the open position (see Fig. 6a), the stop plunger 482 penetrates into the receiving chamber 421 until it rests against the actuating surface 433 of the piston rod 432 (see Fig. 6b), whereas the cylinder 431, with its actuating surface 433, rests against the opposite inner side of the end wall 422 of the receiving chamber 421. Here, too, the damper 43 is compressed and the movement of the flap into the open end position is dampened (see Fig. 6c).

[0085] In addition to damping through the interaction of the damper 43 with the slide 42 on one side and one of the stop plungers 472 or 482 on the other, an end stop of the movement of the lever mechanism 20 is also achieved via the movable slide 42. This aspect is particularly relevant for stopping the opening movement.

[0086] During the opening movement, at a maximum opening angle, the front end wall 422 of the receiving chamber 421 rests against the base body 481 of the stop unit 48 (see Fig. 7a-c).

[0087] The aforementioned adjustability of the stop unit 48 allows for the adjustment of the maximum opening angle for the flap fitting 10 or the attached flap 8. In the illustrated embodiment, the stop unit 48 can be adjusted by means of an adjusting device 49. This device comprises two coupled adjusting levers 491, 492, which are pivotally connected to each other at a common pivot point. The other end of each lever is pivotally mounted to the adjusting block 48 and fixedly mounted to the housing 11 of the flap fitting 10 by means of a bearing axis.

[0088] An adjustment block 493 is also attached to the housing 11. A threaded bore is formed in the adjustment block 493, through which an adjusting screw 494 passes. In this configuration, the adjusting screw 494 serves as a stop for the adjusting lever 492. When the adjusting screw 494 is turned in the direction of the adjusting lever 492, it presses against the adjusting lever 492, thereby changing its angle relative to the housing 11. This allows the stop unit 48 to be moved back and forth along the mounting rail 41 via the adjusting lever 491. This movement of the stop unit 48 shifts both the stop unit 48 for the maximum opening angle of the flap fitting and also the engagement point for the opening damper, since the stop plunger 482 also moves along with the stop unit 48. This effect is further illustrated in Figures 7a to c.When the adjusting screw 494 is turned away from the adjusting lever 492, a gap is created between the adjusting screw 494 and the adjusting lever 492. When the flap 8 is opened, the damper 43 presses against the stop plunger 482 and moves the stop unit 48 until the adjusting lever 492 rests against the adjusting screw 494.

[0089] Figures 8a-c show the damper stroke setting. With the same maximum opening angle setting in Figures 8a and 8b, the damper 43 is actuated at a smaller opening angle when set according to Figure 8a. Damping thus occurs over a large damping angle range. With further opening, the maximum opening angle shown in Figure 7c is reached.

[0090] In the second setting variant according to Figure 8b, the stop surface for the damper 43 in the stop unit 48 is shifted by means of the adjusting ring 483, so that the damper 43 is actuated later, i.e. closer to the maximum opening angle, and thus the damper stroke and the damping angle range are smaller.

[0091] Figure 8c shows the flap 8 with the settings of the stop unit 48 according to Figure 8b at the maximum opening angle. The maximum opening angle corresponds exactly to that shown in Figure 7c. In contrast to Figure 7c, however, the damper 43 is only retracted approximately halfway. This design ensures that the damping of the opening movement does not begin at a fixed opening angle, but rather at an opening angle that increases when a larger maximum opening angle is set and decreases when a smaller maximum opening angle is set.

[0092] Figure 9 shows the stop unit 48, which allows adjustment of the damper travel during opening damping, in more detail. The stop unit 47 for closing damping can be constructed identically, even though a guide movement along the mounting rail 41 is not required.

[0093] In the left part of Figure 9, the stop unit 48 is shown in three dimensions, and in the right part of Figure 9, it is shown in three dimensions with the base body 481 in longitudinal section. The figures show that the adjusting ring 483 is rotatably mounted in the base body 481 and that the stop plunger 482 passes through the adjusting ring 483. The stop plunger 482 has a substantially rectangular cross-section with rounded transverse faces that are threaded. This thread engages with an internal thread formed in the adjusting ring 483. The profile of the stop plunger 482 is reflected in a recess inside the base body 481, so that the stop plunger 482 can be inserted into or removed from this base body 481 by rotating the adjusting ring 483.

[0094] Furthermore, the illustrations in Figure 9 show that the base body 481 has a front end face 484, which is the end stop surface against which the slide 42 moves with its end wall 422 when in its maximum open position. Another stop surface, against which the damper 43 moves with one of its actuating surfaces 433, is formed by the end face of the stop plunger 482. During the opening movement, the actuating surface 433 of the damper 43 first comes to rest against the stop surface, and then the slide 42 comes to rest against the end stop surface.

[0095] The figure further shows that, analogous to the guide surface 424 on the slide 42, guide surfaces 485 are formed laterally in the base body 481, which serve to guide along the guide track 413. Finally, an actuating lever receptacle 486 for the actuating lever 491 is formed at the end opposite the stop plunger 482. The actuating lever 491 is mounted in this receptacle by means of a bolt inserted through it. In the case of the stop unit 47, a corresponding bolt serves for attachment to the mounting rail 41 or to the housing 11.

[0096] Figure 10 shows a housing 11 of a further embodiment of a flap fitting 10, which also has a linearly guided slide 60 that can be coupled to an electric drive, for example, the electric drive 50 of Figures 2a-2d. Unlike the first embodiment, the linearly guided slide 60 is guided on the housing side 111. Another difference from the first embodiment is that the linearly guided slide 60 is accessible from both opposite housing sides 111 of the housing 11. An electric drive can therefore be selectively arranged on either of the housing sides 111 of the flap fitting 10.

[0097] The linearly guided carriage 60 has guide surfaces 612. In this embodiment, these guide surfaces 612 are also designed as grooves. The guide surfaces 612 of the carriage 60 bear against a linear guide track 116, and the carriage 60 is displaceable along the guide track 116. In this embodiment, the guide track 116 is formed on the housing 11.

[0098] As in the first embodiment, an opening 115 is provided in both housing sides 111 of the housing 11, the edges of which function as guide rails 116 in the upper and lower regions. The linearly guided slide 60 has a slide 61 on each side for this purpose. The slide 61 is plate-like and has grooves in its upper and lower narrow sides into which the guide rails 116 engage. The slides 61 on both sides of the housing 11 are connected to each other via a crossbar 62. The guide rails 116 are not present in a front region of the opening 115, thus forming a region in which the slides 61 can be inserted.

[0099] The linearly guided slide 61 has a coupling interface 611 to which the drive 50 can be coupled with an output element 53 (see pin in Fig. 2d). The coupling interface 611 of the slide 61 is designed here as an engagement opening, and the output element 53 of the drive 50 as a pin. In the inner area of ​​the fitting, push and pull rods 63 on each side of the housing 11 are pivotally connected to the crossbar 62 and thus to the slides 61. The push and pull rods 63 are coupled at their free ends to two exemplary pivot levers 64, which are mounted on a bearing axis 65.

[0100] Figure 10 shows a fragment of the fitting to illustrate the guidance of the linearly guided slide 60 in the housing sides 111 of the housing 11. Not shown in Figure 10 are further components of the fitting with which a flap 8 is attached or guided.

[0101] Reference symbol

[0102] 1 piece of furniture

[0103] 2 furniture carcasses

[0104] 3 side wall

[0105] 3' overhang

[0106] 4 Underbody

[0107] 5 Topsoil

[0108] 6 intermediate floors

[0109] 7 Back panel

[0110] 8 flap

[0111] 9 pot recess

[0112] 10 flap fittings

[0113] 11 cases

[0114] 111 Case side

[0115] 112, 113, 114 Mounting interface

[0116] 115 Opening

[0117] 116 Guide rail

[0118] 12 Mounting element

[0119] 121 Mounting plate

[0120] 122 Mounting pot

[0121] 123 outriggers

[0122] 20 lever mechanism

[0123] 21 transmission levers

[0124] 22 Control arm

[0125] 23 support levers

[0126] 24 transmission rod

[0127] 25, 26 Joint axle (fixed to the housing)

[0128] 27 First joint axis (fixed to the mounting element)

[0129] 28 second joint axis (fixed to the mounting element)

[0130] 29 Articulated axle (not stationary)

[0131] 30 power storage units

[0132] 31 Mounting rail (of the power storage unit)

[0133] 32 spring holders

[0134] 33 spring

[0135] 34 Power storage slide 35 Push rod

[0136] 36 Adjustment device (of the power storage unit)

[0137] 40 damper unit

[0138] 41 Mounting rail (of the damper unit)

[0139] 411 Base

[0140] 412 Side panel

[0141] 413 Guide rail

[0142] 414 Mounting hole

[0143] 42 linearly guided slides

[0144] 421 Receiving trough

[0145] 422 Front wall

[0146] 423 Opening

[0147] 424 guide surface

[0148] 425 lower part (of the damper slide)

[0149] 43 dampers

[0150] 431 cylinders

[0151] 432 Piston rod

[0152] 433 Operating area

[0153] 44 Reinforcement profile

[0154] 441 Coupling interface

[0155] 45 Transmission element

[0156] 46 coupling levers

[0157] 461 Bearing axle

[0158] 462 Coupling axle (to the lever mechanism)

[0159] 463 Coupling axle (for push and pull rod)

[0160] 47 Stop unit (for closing damping)

[0161] 471 Basic body

[0162] 472 stop plungers

[0163] 473 Locking ring

[0164] 48 Stop unit (for opening damping)

[0165] 481 Basic body

[0166] 482 stop plungers

[0167] 483 Adjusting ring 484 End face 485 Groove 486 Adjusting lever receptacle

[0168] 49 Adjustment device (for the maximum opening angle)

[0169] 491, 492 Adjusting lever 493 Adjusting block 494 Adjusting screw

[0170] 50 drive

[0171] 51 Housing 511 Housing side 512, 513, 514 Mounting interface 515 Opening

[0172] 516 Latching element

[0173] 52 controls

[0174] 53 Output element

[0175] 60 linearly guided carriages

[0176] 61 Slider 611 Coupling interface 612 Guide surface

[0177] 62 Crossbar

[0178] 63 Transmission element

[0179] 64 swivel levers

[0180] 65 Bearing axle

[0181] G Weight force

[0182] S Locking area

[0183] 0 Opening range OE Opening end position

Claims

27 Claims 1. Flap fitting (10) with a housing (11) for attachment to a furniture body (2), comprising at least one actuating arm for an associated flap (8) and a power storage unit (30) with an adjusting device (36) for adjusting the force of the power storage unit (30), which are coupled to the actuating arm to drive it, characterized in that the flap fitting (10) has a drive interface for coupling an electric drive (50), wherein the drive interface comprises a linearly guided slide (42, 60) with at least one coupling interface (441, 611) for the electric drive (50), and wherein the linearly guided slide (42, 60) is coupled to the actuating arm via a transmission element (45, 63).

2. Flap fitting (10) according to claim 1, wherein the at least one coupling interface (441 , 611 ) of the linearly guided slide (42, 60) is accessible in the area of ​​at least one opening (115) of the housing (11 ).

3. Flap fitting (10) according to claim 2, wherein the linearly guided slide (42, 60) is guided in the area of ​​the at least one opening (115) of the housing (11 ).

4. Flap fitting (10) according to claim 2 or 3, in which an opening (115) is formed on each of two opposite sides of the housing (11), wherein in the area of ​​the opening (115) the at least one coupling interface (441 , 611 ) of the linearly guided slide (42, 60) is accessible.

5. Flap fitting (10) according to one of claims 1 to 4, wherein the at least one coupling interface (441 , 611) is an engagement opening in the linearly guided slide (42, 60).

6. Flap fitting (10) according to one of claims 1 to 5, wherein the housing (11) has externally accessible fastening elements for connection to the electric drive (50).

7. Flap fitting (10) according to one of claims 1 to 6, wherein the power storage unit (30) is adjustable by the adjusting device (36) to a weight force (G) of the flap, so that the flap (8) closes automatically in a closing area (S) and the flap (8) is held in an opening area (Ö) by the power storage unit (30) or the flap (8) is moved in the opening direction and the flap (8) is held at least in an opening end position (OE) by the power storage unit (30).

8. Flap fitting (10) according to claim 7, wherein the linearly guided slide (42, 60) is coupled to the coupling interface (441, 611) which is coupled to an output element (53) of the electric drive (50), wherein the electric drive (50), which essentially only provides the necessary forces for the movement of the flap (8), drives the pivotably mounted actuating arm by means of the transmission element (45, 63).

9. Flap fitting (10) according to one of claims 1 to 8, comprising a mounting element (12) for fastening the flap (8) and a lever mechanism (20) by which the housing (11) and the mounting element (12) are connected to each other and are movably guided relative to each other, wherein the actuating arm is formed by a link of the lever mechanism (20) or by a single-link lever mechanism.

10. Flap fitting (10) according to one of claims 1 to 9, wherein an end stop is provided to limit a displacement range of the linearly guided slide (42, 60).

11. Flap fitting (10) according to claim 10, wherein the displacement range is adjustable by means of an adjusting device (49) in order to set an end position of the flap (8).

12. Flap fitting (10) according to one of claims 1 to 10, comprising a damper unit (40) with at least one damper (43) which serves to dampen the opening and / or closing of the mounting element (12) relative to the housing (11).

13. Flap fitting (10) according to claim 11, wherein the at least one damper (43) is arranged in or on the linearly movable slide (42, 60).

14. Flap fitting (10) according to one of claims 11 to 13, comprising at least one stop unit (47, 48) which has a stop surface on which the at least one damper (43) strikes.

15. Flap fitting (10) according to one of claims 1 to 14, wherein the linearly guided slide (42, 60) is guided on at least one linear guide track (413, 116).

16. Flap fitting (10) according to claim 15, wherein the linear guide track (413, 116) is formed on the housing (11) itself or is arranged on a component that is immovable relative to the housing (11).

17. Flap fitting (10) according to one of claims 1 to 16, wherein fastening interfaces (112, 113, 114) are arranged on the housing (11) of the flap fitting (10), which enable a plug-in and / or slide-on and / or a pivot-slide movement for fixing the drive (50) to the housing (11) of the flap fitting (10), wherein at least one fastening interface (112, 113, 114) is locked with the drive (50) in an assembly end position and substantially prevents movement of the drive (50) in a direction of movement opposite to that of the linearly guided slide (42, 60).

18. Flap fitting (10) according to claim 17, wherein the movement is matched to the coupling interface (441 , 611 ) of the linearly guided slide (42, 60).

19. Arrangement with a flap fitting (10) and an electric drive (50), characterized in that the flap fitting (10) has a drive interface with a linearly guided slide (42, 60) with which the electric drive (50) is coupled to an output element (53).

20. Arrangement according to claim 19, wherein the flap fitting (10) is designed according to one of claims 1 to 18.

21. Furniture (1) with a furniture body (2) and a flap (8) associated thereto, comprising an arrangement according to claim 19 or 20.

22. Furniture (1 ) according to claim 21 , comprising a top surface (5) on or above which the arrangement of flap fitting (10) and electric drive (50) is arranged.

Images