Holding device for a door and functional unit with a holding device

Abstract

The invention relates to a holding device (2) which is designed to hold a rotatably mounted door element (111) in a closed position and to release the door element (111) out of the closed position, comprising a locking unit (24) with a force transmitter (241), which has a connection part (246), and comprising a locking mechanism (249) that can be cyclically moved by means of the force transmitter (241) under the effect of pressure between a locking position (p1), in which the locking mechanism (249) reaches a holding position and the holding device (2) is connected or can be connected to a closure element (20), and a release position (p2), in which the locking mechanism (249) reaches a release position and the holding device (2) is released from the closure element (20). According to the invention, the closure element (20) consists at least partly of a magnetic or ferromagnetic material; an installation part (21) comprising an installation body (211) and a holding lever (22) comprising a lever body (221) are provided; the installation body (211) can be connected to the door element (111) and is connected to the lever body (221) by means of a lever joint (23); the lever body (221) has a front piece (2219) which holds at least one holding magnet (282) that is connected or can be connected to the closure element (20) in a force-fitting manner in the holding position; and a coupling unit (25) is provided comprising a coupling body (253) which is connected to the installation body (211) in an articulated manner and to the lever body (221) in an articulated manner at a distance to the lever joint (23) and which is connected to the connection part (246) of the locking unit (24) in an articulated manner.

Description

[0001] The invention relates to a holding device for a door, in particular for a folding door or folding sliding door, which can be actuated by pressure, and to a functional unit, in particular a piece of furniture, which is provided with a door, in particular with a folding door or folding sliding door, and with at least one holding device.

[0002] To close off functional units, for example openings of rooms or pieces of furniture, doors, usually folding doors or folding sliding doors, are used, which after the opening has been released are preferably moved into a door compartment or into a parking space so as not to be obtrusive.

[0003] US9284761B2 discloses a piece of furniture with a sliding device by means of which a mounting profile connected to a folding sliding door can be moved within a door compartment. The folding sliding door comprises two door elements, the first of which is connected at the rear by stop hinges to a mounting profile and at the front by folding door hinges to the rear of a second door element. The second door element is connected at the front to a track that is movable along a running rail. The running rail has two track sections perpendicular to each other and connected by a curved section. The first track section extends into the door compartment, and the second track section extends along the front of the furniture. The mounting profile is held vertically by a support device and is provided at the top and bottom with guide carriages that are slidably mounted in guide rails.

[0004] To close the piece of furniture, the folding door is extended from the door compartment and unfolded. In the closed position, the door elements are aligned planarly to each other. To open the piece of furniture, the folding door is folded again, with the door elements preferably retracting into the door compartment in an open position, parallel to each other.

[0005] In the closed position, the folding door must be held in a planar orientation to prevent it from folding automatically. After opening the folding door from the closed position, it would be desirable for the folding process to occur automatically.

[0006] DE202018100262U1 discloses a pressure-actuated holding device that supports both holding the folding door in the closed position and the folding process after the folding door has been released from the closed position. This device comprises a first fitting part connected to the first door element of the folding door and a second fitting part connected to the second door element of the folding door. Between the first fitting part and a coupling device arranged on the second fitting part is an ejection element, which is movably connected to the first fitting part and the coupling device. Adjustment of the first fitting part relative to the coupling device is achieved via a force storage device, which is manually charged by the user and acts against the ejection element. A release device is connected to the second door leaf via a connecting cable.The locking device is unlocked by applying pressure to the planarly aligned door elements, which further pushes them out of their planar alignment in the closing direction.

[0007] This device has a complex design and requires numerous components, one group of which must be connected to the first door element and another group to the second. Furthermore, components are provided that connect the two fittings and thus the two door elements. The first set of these components is mechanically guided with considerable effort, while the second set is held loosely, which is generally undesirable. The door elements of the folding door are held in the closed position solely by the retaining device, necessitating measures to prevent accidental unlocking. Due to the use of two fittings, it is also essential to ensure that these are connected to the first and second door elements at the correct distance from each other and in the correct relative alignment and height.It should also be noted that this device takes up a lot of space, which is disadvantageous given the limited space available inside the piece of furniture and especially within a door compartment.

[0008] Furthermore, the holding device is only suitable for use with folding doors, so a different holding device is required for doors with only one door element.

[0009] US2022372808A1 discloses an ejection device with two levers that can pivot relative to each other and that can be locked against each other by means of a locking device.

[0010] US20180119470A1 discloses a further ejection device which has at least one ejection element for opening a folding door.

[0011] US20170247924A1 discloses an ejection device for opening a folding door.

[0012] The present invention is therefore based on the objective of creating an improved holding device by means of which the door of a functional unit, a single door or a folding door, optionally a folding sliding door, can be held in a closed position.

[0013] Furthermore, an improved functional unit, in particular a piece of furniture, with at least one door element, is to be created, which is equipped with at least one such holding device.

[0014] The holding device should allow a door of a functional unit, a single door or a folding door, possibly a folding sliding door, to be held in a closed position and released again.

[0015] The holding device should have a simple design and as few parts as possible, so that it can be manufactured and assembled with minimal effort and low costs.

[0016] The holding device should also be designed with small dimensions, so that it occupies minimal space in the closed position (when a single door is closed, the door elements of the folding door are aligned flat), and also in the open position (when the door elements of the folding door are aligned side by side). The usable space available to the user should therefore be optimized by ensuring the holding device does not protrude far into the usable space and by creating a door recess for the held door with the smallest possible dimensions.

[0017] The holding device should be easy to mount in the functional unit. Mutual alignment of device components should be avoided or at least significantly simplified.

[0018] The holding device is designed to reliably hold the door, or folding door if applicable, in the closed position without additional measures and to support the opening process, or folding process if applicable, after the door has been released from the closed position.

[0019] This problem is solved by a holding device according to claim 1 and a functional unit, optionally a piece of furniture, according to claim 12, which is equipped with at least one such holding device.

[0020] Advantageous embodiments of the invention are specified in further claims.

[0021] The holding device according to the invention, which is provided for holding a rotatably mounted door element, which forms a single door or together with a second door element a folding door, in a closed position and for releasing the door element from the closed position, comprises a locking unit with a force transmitter which has a connecting part, and a locking mechanism which locking mechanism is cyclically displaceable by the force transmitter by means of pressure between a locking position, in which the locking mechanism reaches a holding position and the holding device can be connected to or is connected to a locking element, and a release position, in which the locking mechanism reaches a release position and the holding device can be released from or is released from the locking element.

[0022] The holding device according to the invention further provides, that the locking element consists at least partially of magnetic or ferromagnetic material, that a mounting part with a mounting body and a holding lever with a lever body are provided, that the mounting body is connectable to the door element and connected to the lever body by a lever joint, that the lever body has a front piece that holds at least one holding magnet which is positively connected or connectable to the locking element in the holding position, and that a coupling unit with a coupling body is provided which is pivotally connected on one side to the mounting body and on the other side to the lever body as well as pivotally connected to the connecting part of the locking unit, spaced apart from the lever joint.

[0023] The retaining lever is preferably rotatable about a lever axis of the lever joint relative to the mounting part. During this process, the coupling body of the coupling unit, which is preferably plate-shaped, is rotated. The rotation of the coupling body, which occurs when the retaining lever is actuated, transmits a force from the coupling body to the connecting part of the force transmitter, and the locking unit is actuated cyclically incrementally with each actuation of the retaining lever.

[0024] Preferably, at least one return spring is provided, which acts directly or indirectly on the force transmitter or the coupling unit and automatically returns the locking unit from the holding position to the release position. The return spring can also act on the mounting part on one side and on the holding lever on the other.

[0025] Since the power transmitter, the coupling unit, the mounting part, and the retaining lever are coupled together, the return spring can act on each of these parts to return the power transmitter to its original position or to rotate the mounting part and the retaining lever apart. The return spring can be arranged coaxially with the power transmitter and, for example, be in the form of a helical spring. The return spring can also have multiple coils that encircle the central shaft and act on the mounting part with a first end and on the retaining lever with a second end to rotate them apart. In preferred embodiments, a first return spring acting on the power transmitter and / or a second return spring acting on the mounting part and the retaining lever, and preferably encircling the central shaft, are provided.

[0026] The locking mechanism is designed to be cyclically locked and unlocked, with the force transmitter, supported by the return spring, being moved back and forth by the required amount each time. The locking mechanism is released by pushing the force transmitter beyond a detent position. This causes the released force transmitter to be retracted by the return spring, and a torque is applied to the retaining lever via the coupling element. This torque releases the retaining lever from the magnet, allowing the separating element connected to the holding device to be returned from the closed position.

[0027] In preferred embodiments, the coupling body is connected to a lever shaft, which is held by the lever body, and to a mounting shaft, which is held by the mounting body. The coupling body is pivotally connected to the connecting part of the locking unit by means of the lever shaft, the mounting shaft, or a preferably provided coupling shaft. The actuating force can therefore be introduced from the coupling body into the force transmitter in various ways. The lever shaft and / or the mounting shaft and / or the coupling shaft are preferably aligned parallel to each other.

[0028] The force transmission between the mounting body and / or the lever body and / or the connecting part can be effected by any mutually complementary connecting or coupling elements, such as hooks, cams, recesses, and the like. The coupling body itself preferably consists of a single piece, preferably a plate, but can also consist of two or more parts. For example, the coupling body forms a lever or a lever mechanism with a first lever part and a second lever part. The first lever part is connected, for example, to the mounting shaft on one side and to the coupling shaft on the other. The second lever part is connected, for example, to the lever shaft on one side and to the coupling shaft on the other. The two lever parts therefore preferably form a toggle joint, which acts on the force transmitter or the connecting part and repulses it when the retaining lever is rotated against the mounting part.It is therefore sufficient if the coupling shaft or a part connected to it acts on the connecting part of the power transmitter.

[0029] In particular, if an additional coupling shaft is omitted and only the lever shaft held by the lever body and the mounting shaft held by the mounting body are provided, it is preferably provided that the lever shaft is held in a guide track within the lever body and pivotally connected to the connecting part of the locking unit, or that the mounting shaft is held in a guide track within the mounting body and pivotally connected to the connecting part of the locking unit. The lever shaft or mounting shaft held in the guide track is therefore positively guided in order to actuate the locking unit cyclically.

[0030] The holding device is advantageously constructed with only a few device parts and can therefore be manufactured cost-effectively and assembled easily.

[0031] The holding device can advantageously be mounted on just one door element, or, if applicable, on one door element of a folding or folding sliding door. Therefore, it is not necessary to mount, align, position, and connect device components on a first and second door element. Mounting the holding device itself on the assigned door element is also straightforward and can be accomplished with simple measures. It is only necessary to ensure that the holding magnet of the device can interact with the stationary magnetic or ferromagnetic locking element when the door, or folding door, is in the closed position. The holding device is therefore universally applicable and can also be retrofitted to already installed functional units or pieces of furniture.Furthermore, it is possible to arrange the holding device in a stationary position and, for example, to connect it to the body of the functional unit, while the locking element is connected to the door element.

[0032] The locking unit, which is preferably arranged within the mounting part or within the retaining lever, is preferably cylindrical. The force transmitter is preferably an actuating piston, which is preferably guided axially in a cylindrical housing. However, the force transmitter can also be rod-shaped or have another form.

[0033] The mounting part and the retaining lever are preferably retractable into one another, so that the retaining device in the closed position or in a parking position in which the door elements of a folding door are folded against each other takes up very little space, which is essentially determined by the dimensions of the locking unit.

[0034] The mounting body is preferably at least partially U-shaped and comprises two side walls connected by a central body section, which define a receiving chamber in which the locking unit is wholly or partially received and held by friction or positive locking. Alternatively, the locking unit can also be arranged in the retaining lever.

[0035] When the locking unit is arranged within the U-profile-shaped mounting body, and a coupling shaft is avoided, each of the side walls preferably has a guide track so that the mounting shaft is securely guided on both sides in the two guide tracks, which are opposite each other and run parallel to each other. When the locking unit is arranged within the U-profile-shaped lever body, and a coupling shaft is avoided, each of the side parts of the lever body preferably has a guide track so that the lever shaft is securely guided on both sides in the two guide tracks, which are opposite each other and run parallel to each other. The mounting shaft and / or the lever shaft and / or the coupling shaft are preferably held and / or guided on both sides.

[0036] The guide track(s) have a straight or curved profile. Preferably, the guide tracks have a V-shaped profile with track ends facing the coupling unit. This ensures that a high force can be transmitted to the force transmitter during the closing process. At least the section of the guide track traversed by the mounting shaft or lever shaft at the beginning of the closing process is therefore preferably inclined relative to the longitudinal axis of the mounting part. The angle of inclination of this track section is preferably around 45°. The section of the guide track traversed first by the mounting shaft during the opening process is also preferably inclined, resulting in a greater track length without requiring more space in the axial direction.

[0037] The length of the guide rails is preferably selected such that the force transmitter can be displaced beyond the locking position into a transition position at least during the second pressure application. This allows the folding door to be pushed over in the closing direction in order to engage or disengage a retaining element from its anchorage.

[0038] Preferably, the force transmitter is supported within the locking unit by a return spring which counteracts the pressure exerted by the coupling body on the force transmitter and automatically moves the force transmitter back into the release position after it has been released from the locking position and moved into the transition position, in which the retaining lever is pivoted outwards relative to the mounting part.

[0039] The force required to rotate the mounting part and the retaining lever relative to each other can also be exerted by an external force source. In preferred embodiments, a further spring element can also act on the mounting part and the retaining lever. For example, a spring, such as a coil spring, is arranged in the area of ​​the central shaft and / or at a distance from the central shaft. Furthermore, a leaf spring can be provided between the mounting part and the retaining lever.

[0040] The locking unit is preferably adjustable and comprises an adjustment part with an engagement element which can be actuated by means of a tool that can preferably be inserted into the receiving chamber through an adjustment channel provided in the mounting body. The tool can be used, for example, to adjust the position reached in the locking position or the transition position.

[0041] The connecting element is simple or preferably U-shaped, with one or two connecting plates, each provided with a connecting track, between which the part of the coupling body equipped with the mounting shaft, lever shaft, or coupling shaft is held. The mounting shaft, lever shaft, or coupling shaft is therefore preferably guided on both sides by a connecting track in the connecting element and by a guide track in the mounting body or lever body, so that no torsional forces act on the mounting shaft, lever shaft, or coupling shaft and the coupling unit. A compressive force acting on the holding device can therefore be transmitted to the locking unit without significant loss. Likewise, the locking unit can transmit forces back via the force transmitter with minimal loss during the opening process.

[0042] The connecting track(s) allow the mounting shaft the freedom to follow the guide track(s), even if these are not linear. Therefore, when the power transmission unit is moved, a blockage of the mounting shaft, lever shaft, or coupling shaft is always avoided.

[0043] The lever body is preferably at least partially U-shaped and comprises two side walls connected by a body center piece, which define a lever chamber into which the mounting part can be fully or partially lowered.

[0044] In a preferred embodiment, the lever body has a tool channel through which a tool part can be guided to actuate a mounting screw that passes through the mounting body. This allows the holding device to be advantageously mounted and dismounted.

[0045] On the front piece facing away from the central shaft, the lever body of the retaining lever preferably holds at least one spacer roller. For example, the front piece is fork-shaped and pierced by a bearing shaft that holds one or more spacer rollers. The spacer rollers ensure that the front piece of the retaining lever cannot collide with any part of the furniture in the closed position, and that in the parked position, after the folding door has been folded, it cannot collide with the adjacent door element. The spacer rollers are preferably dimensioned such that the retaining magnet cannot touch the locking element.

[0046] In a further preferred embodiment, the lever body has a magnetic chamber into which the holding magnet is recessed.

[0047] A through-opening preferably adjoins the magnetic chamber. A connecting screw passes through this opening, linking the holding magnet to a threaded section, preferably supported by a spring. This threaded section holds the holding magnet axially displaceable or pivotable, or axially displaceable and pivotable. The threaded section preferably includes a threaded stud that is held with play within the through-opening. The holding magnet can therefore align itself automatically and interact optimally with the magnetic or ferromagnetic locking element even if the holding lever is not parallel to the mounting part and / or the locking element. In the closed position of the folding door, the holding lever can still be rotated relative to the mounting part by an angle of, for example, 1° to 10°, allowing the folding door to be forced open and the holding device to be released from its holding position.The mounting shaft, retaining shaft or coupling shaft can therefore be moved from the locking position to the transition position, in which the mounting part and the retaining lever can now actually be aligned parallel to each other with their longitudinal axes.

[0048] After the holding device is released from the locking position, the mounting shaft is returned by spring force along the guide track(s), causing the holding lever to rotate away from the mounting part and, in the process, also tilt relative to the locking element. This lifts the holding magnet laterally and detaches it from the locking element. The holding magnet is therefore not lifted frontally from the locking element, which would require considerable force, but rather gradually detached by slow tilting, requiring minimal effort. The holding magnet can thus reliably adhere to the locking element in the closed position and yet be easily released from it during the opening process.

[0049] The locking element is, for example, a ferromagnetic plate, such as a steel or iron plate. The holding magnet, designed as a permanent magnet, is preferably a rare-earth magnet, consisting, for example, of ferrous metals (iron and / or cobalt and / or nickel) and rare-earth metals (in particular neodymium, samarium, praseodymium, dysprosium, terbium, or gadolinium). The locking element can also be a permanent magnet.

[0050] The locking element can be an integral part of the functional unit, possibly a piece of furniture, or it can be connected to a part of the functional unit at a suitable location, for example by screwing, gluing, or positive locking. For example, the functional unit may include a ferromagnetic rail or a ferromagnetic cover with which the holding magnet can magnetically interact.

[0051] Direct physical contact between the holding magnet and the locking element is not necessary and is preferably avoided by covering the holding magnet on the side facing the locking element and / or the locking element on the side facing the holding magnet with a protective layer, for example made of plastic, or by providing a distance by other means. The holding magnet and / or the locking element can also be recessed into an adjacent part so that contact is impossible.

[0052] Preferably, the holding magnet is held in a magnetic cup, preferably made of plastic, which preferably extends slightly beyond the holding magnet and comes into contact with the locking element when the door is closed. The contact of the preferably elastically designed and / or elastically mounted magnetic cup with the locking element prevents impacts and disruptive noises. The magnetic coupling of the holding magnet to the locking element nevertheless results in a stable connection, which securely holds the door in the closed position.

[0053] The lever body preferably comprises a magnetic chamber in which the holding magnet and, preferably, the magnetic cup are held. The holding magnet can therefore be completely recessed into the holding lever or the front part of the holding lever without requiring any additional space. The holding magnet is preferably cylindrical and held in the appropriately dimensioned magnetic chamber.

[0054] Preferably, a connecting screw is inserted through a through-hole in the retaining lever and into an elastic threaded section, which is preferably held in a retaining chamber on the other side of the retaining lever so that it does not protrude beyond the lever. The threaded section preferably comprises a retaining plate with a threaded stud into which the connecting screw is screwed, and which preferably extends through the through-hole to the magnet chamber. Due to the play of the threaded stud within the through-hole and the flexible mounting of the retaining plate by means of a support spring, the threaded stud can be tilted to the side. The retaining magnet can also be tilted to the side by means of the connecting screw, in order to automatically align itself optimally with respect to the retaining element. The preferably spiral-shaped support spring is compressed accordingly.

[0055] The functional unit, a building unit lockable by at least one door or a folding door, or a piece of furniture lockable by at least one door or a folding door, typically comprises at least one door compartment in which the folded folding door can be parked. The functional unit may, for example, include a door with only one door leaf and an associated first door compartment, as well as a folding door with two door elements that fold against each other and a second door compartment. The functional unit may also include two single doors or two folding doors.

[0056] A folding door comprises two door elements connected to each other by folding door hinges and rotatable relative to each other about a pivot axis. One of the door elements is connected to a holding device according to the invention in such a way that the holding magnet can interact with the stationary magnetic or ferromagnetic locking element in the closed position of the folding door, which is rigidly connected to a part of the functional unit or which forms a structural element of the functional unit.

[0057] The retaining device is preferably mounted on the underside or top of one of the door elements and aligned parallel to the lower or upper edge of the associated door element, with the retaining lever and the retaining magnet facing the functional unit. If the locking element is attached elsewhere, for example at half the cabinet height, such as on an intermediate shelf, the retaining device can also be attached at this height.

[0058] Preferably, at least one of the folding door hinges is equipped with a hinge spring that rotates the hinge levers of the folding door hinge, which are connected to each other by a hinge axis, against each other, so that the hinge spring is tensioned when the hinge levers are rotated apart in the closed position of the folding door. As soon as the holding device is released from the closed position, the folding door hinges thus assist the folding process of the folding door.

[0059] The hinge spring preferably comprises two spring assemblies connected by a spring center piece, which enclose the hinge axis and each bear against the first hinge lever with one spring end piece, while the spring center piece bears against the second hinge lever. The spring assemblies are preferably helical or spiral.

[0060] Preferably, at least one of the stop hinges, which is connected to a one-piece door or to a folding door, is also equipped with a hinge spring.

[0061] The opening process of the one-piece door or the folding process of the folding door is therefore preferably supported from the closed position by at least one stop hinge and / or at least one folding door hinge.

[0062] The functional unit, optionally the piece of furniture, can be designed as desired. Preferably, the door element is connected at one edge by stop hinges to a mounting profile, which is slidably held within a door compartment of the piece of furniture, and at an opposite edge by folding door hinges, optionally to a second door element. The second door element is preferably connected at an edge furthest from the folding door hinges to a guide mechanism, which is guided in a guide rail that runs along the front of the piece of furniture and by which the magnetic or ferromagnetic locking element is preferably held.

[0063] The invention is explained in more detail below with reference to the drawings. These show: Fig. 1 shows a functional unit 1 according to the invention in the embodiment of a piece of furniture with a folding door 11, which has two door elements 111, 112, which is equipped with a holding device 2 according to the invention and which can be inserted into a first door compartment 10, and with a door 11 with only one door element 111, which is equipped with a holding device 2 according to the invention and can be inserted into a second door compartment 10; Fig. 2 shows the back of the folding door 11 of the piece of furniture 1. Fig. 1 with the first door element 111, which is connected at the trailing edge by stop hinges 13 to a mounting profile 12 and at the leading edge by folding door hinges 3 to a second door element 112, and on which a preferably designed holding device 2 is mounted, which has a holding magnet 282 which, in the closed position of the folding door 11, interacts with a magnetic or ferromagnetic locking element 20 which is held stationary by a part of the piece of furniture 1; Fig. 3 in exploded view of the holding device 2 of Fig. 2 , comprising a mounting part 21 with a mounting body 211, a retaining lever 22 with a lever body 221, a central shaft 23 for connecting the mounting body 211 and the lever body 221, an arrangement with a retaining magnet 282, a locking unit 24 and a coupling unit 25 by means of which the mounting body 211, the lever body 221 and the locking unit 24 can be coupled to one another; Fig. 4 a part of the folding door 11 of Fig. 2 shortly before reaching the closed position or shortly after releasing from the closed position; Fig. 5 the folding door 11 of Fig. 4 with the first door element 111 in a sectional view and the second door element 112 in parallel alignment, in which the folding door 11 can be inserted into the associated door compartment 10; Fig. 6 aden lever body 221 of Fig. 3 with a view to a lever chamber 2210 into which the mounting body 211 can be lowered; Fig. 6b the lever body 221 of Fig. 3 with a view to a magnetic chamber 2218, into which the holding magnet 282 of Fig. 3 is used; Fig. 6c the mounting body 211 of Fig. 3 with a view to a receiving chamber 2110, into which the locking unit 24 of Fig. 3 usable; Fig. 6dden mounting body 211 of Fig. 3 looking at a side that is connected to one of the door elements 111, 112 of Fig. 1 connectable; Fig. 7adie front side of the holding device 2 of Fig. 3 with the holding magnet 282 released from the locking element 20 before reaching the closed position or after leaving the closed position; Fig. 7b the front of the holding device 2 of Fig. 7a in the closed position of door 11 or folding door 11 of Fig. 1 with the holding magnet 282, which is magnetically coupled to the locking element 20; Fig. 7c the front side of the holding device 2 of Fig. 7b during the over-pressing process by which the holding device 2 is moved into or released from the holding position; Fig. 8 the holding device 2 in the position of Fig. 7a with a longitudinal section through the mounting body 211 and the lever body 221; Fig. 9adie holding device 2 in a further preferred embodiment with the holding magnet 282 released from the locking element 20 before reaching the closed position or after leaving the closed position; Fig. 9bthe holding device 2 of Fig. 9a with a longitudinal section through the mounting body 211 and the lever body 212 with a view of the locking unit 24 and the preferably configured coupling unit 25; Fig. 10 the holding device 2 of Fig. 9a in the closed position of door 11 or folding door 11 of Fig. 1 with the holding magnet 282, which is magnetically coupled to the locking element 20; Fig. 10b the holding device 2 of Fig. 10a with a longitudinal section through the mounting body 211 and the lever body 212; Fig. 11adie holding device 2 of Fig. 9a during the over-pressing process by which the holding device 2 is brought into or released from the holding position; Fig. 11b the holding device 2 of Fig. 11a with a longitudinal section through the mounting body 211 and the lever body 212; Fig. 12 the holding device 2 of Fig. 9a in exploded view; Fig. 13adie holding device 2 of Fig. 9a Exploded view from the front; Fig. 13b the holding device 2 of Fig. 9a Exploded view from the rear; Fig. 13c the holding device 2 of Fig. 9a with a longitudinal section through the mounting body 211 and the lever body 212; Fig. 14 the locking unit 24 of Fig. 3 or Fig. 9b and the coupling unit 25 in preferred embodiments; and Fig. 14b the coupling unit 25 in the embodiment of a knee joint.

[0064] Fig. 1 Figure 1 shows a functional unit 1 according to the invention in the embodiment of a piece of furniture 1 with a folding door 11, which is equipped with a holding device 2 according to the invention and can be inserted into a first door compartment 10, and with a one-piece door 11, which is equipped with a holding device 2 according to the invention and can be inserted into a second door compartment 10. The piece of furniture 1 preferably has side walls 1A, a top panel 1B, a bottom panel 1C, an intermediate shelf 1E and partition walls 1D on both sides, which together with the side walls 1A define the door compartments 10.

[0065] The folding door 11 comprises a first door element 111, which is connected on one side to a mounting profile 12 by stop hinges 13 and on the other side to a second door element 112 by folding door hinges 3. The dimensions of the second door element 112 preferably correspond to the dimensions of the first door element 111. The folding door 11 is slightly unfolded and can either be fully folded and inserted into the door compartment 10 with the door elements 111 and 112 aligned parallel to each other, or fully unfolded and moved into a closed position in which the two door elements 111 and 112 are aligned at least approximately in one plane. To ensure that the folding door 11 remains in the closed position and can be easily released from it, one of the two door elements 111 and 112 is provided with a holding device 2 according to the invention, which, in the closed position, is opposite a locking element 20.In the embodiments of the furniture 1 described below, the first door element 111 of the folding door 11 is provided with the retaining device 2. An arrow symbolizes that when the door element 111 rotates, the retaining device 2 of the folding door 11 is guided against the locking element 20 and held magnetically by the locking element in the closed position of the folding door 11. The second door element 112 is not connected to the retaining device 2 or any part thereof, therefore no assembly work or work for the mutual alignment of device parts is required. However, the alignment of the retaining device 2 with respect to the locking element 20 can be carried out without difficulty. The locking element 20, for example, a magnetic or ferromagnetic plate such as an iron or steel plate, can be easily connected to the furniture 1, for example, by screwing or gluing.The locking element 20 can also be part of a structural element of the piece of furniture 1.

[0066] Fig. 1 Figure 1 shows that the retaining device 2 is preferably arranged on the top of the door element 111. However, the retaining device 2 can also be arranged at another location on the door element 111. For example, the locking element 20 can also be mounted on the intermediate floor 1E and the retaining device 2 on the door element 111 at a corresponding height.

[0067] The use of the retaining device 2 in conjunction with the folding door 11 is particularly advantageous because the retaining device 2 is enclosed between the door elements 111, 112 and does not appear obtrusive. The retaining device 2 can also be advantageously used on the one-piece door 11, where it is advantageous that the retaining device can be implemented with only small dimensions.

[0068] The holding device 2 according to the invention can be used with any functional units, optionally pieces of furniture, which have one-piece or multi-piece doors that, in preferred embodiments, can be parked in a door compartment.

[0069] In the Fig. 1 In the embodiment shown, the doors 11 are each connected to a mounting profile 12 by stop hinges 13. The mounting profile 12 is held vertically by a sliding device 9 and is slidable within the corresponding door compartment 10. The doors 11 are aligned parallel to the side wall 1A in front of the corresponding door compartment 10 and can then be slid into the door compartment 10. The mounting profile 12 can also be equipped with drive devices for sliding within the door compartment 10. Preferably, the mounting profile 12 is connected at its upper side to a support track 5A, which is slidable into the door compartment 10 along a corresponding support rail 15A. The mounting profile 12 can also be connected at its lower side to a track that is guided in a support rail.

[0070] In this preferred embodiment, the second separating element 112 of the folding door 11, the leading edge of which is connected to a guide track 5B, is also guided by a guide rail 15B that runs along the front of the furniture piece 1 and along a curve into the door compartment 10. The folding door 11 is therefore held at the front by the guide track 5B, which, when the folding door 11 is unfolded, is slidable along the front of the furniture piece 1 and, when the folding door 11 is folded, into the door compartment 10. The guide track 5B always precedes the second separating element 112 in the direction of movement.

[0071] Fig. 2 shows the back of the folding door 11 of the piece of furniture 1 of Fig. 1 The first door element 111 is connected at its trailing edge to the mounting profile 12 by stop hinges 13 and at its leading edge to the second door element 112 by folding door hinges 3. The guide carriage 5B is mounted on the front of the second door element 112. The guide carriage 5B comprises support rollers 51, which can roll on a support element 151 of the guide rail 15B, and guide rollers 52, which are guided in a guide channel 152 of the guide rail 15B. The guide rail 15B runs along the front of the furniture piece 1 and curves into the door compartment 10 of the furniture piece 1. To enable the guide carriage 5B to follow this curve, it is connected to the second door element 112 by parts 53 and 54 of a carriage body, which are pivotally connected to each other.

[0072] The mounting profile 12 is connected at its upper end to a support track 5A, which can be slid along a support rail 15A into the door compartment 10. Fig. 2 The support track 5A is guided up to a stop device 7 on the front of the door compartment 10. In this position, which is also in Fig. 1 As shown, the folding door 11 is fully extended from the door compartment 10 and can be unfolded to create the furniture opening 100 (see Fig. 1 ) to conclude. In Fig. 2 The folding door 11 has almost reached the closing position and can be brought into the closing position by manual pressure on the folding door 11, preferably on the leading edge 111, in which the holding device 2 mounted on the rear of the separating element 111 can magnetically interact with the locking element 20, which is connected to the front of the guide rail 15B.

[0073] The holding device 2 comprises a mounting part 21, which is preferably connected to the first door element 111 by means of screws and pivotally connected to a holding lever 22 by means of a central shaft 23. The holding lever 22 is provided with a holding magnet 282 and optionally with two spacer rollers 229 at the front end piece or front piece 2219.

[0074] The optionally provided spacer rollers 229 can roll off the locking element 20 and / or the guide rail 15B during the closing process without the lever body 221 (see Fig. 6b ) the retaining lever 22 touches the locking element 20 or the guide rail 15B. In doing so, the retaining lever 22 is rotated and the retaining magnet 282 is aligned almost frontally against the locking element 20, so that it can magnetically couple to the magnetic or ferromagnetic locking element 20.

[0075] The following describes how the holding device 2 comprises a force transmitter 241 (see, for example, Fig. 3 and Fig. 9b ), which in a locking unit 24 is cyclically displaceable by pressure between a locking position p1, in which the holding device 2 reaches a holding position, and a release position p2, in which the holding device 2 reaches a release position. The holding device 2 can therefore be coupled and locked to the locking element 20 by a first manual pressure on the door element 111 and thus on the holding device 2 in the closed position, and unlocked and released from the locking element 20 by a second manual pressure on the door element 111 and thus on the holding device 2.

[0076] After being released from the closed position, the two door elements 111, 112 are preferably folded automatically. This folding process is preferably assisted by folding door hinges 3, which connect the two door elements 111, 112 and are equipped with a hinge spring 34 comprising two spring assemblies 341, 342 connected by a central spring element. The hinge spring 34 acts on the two hinge levers 31, 32, which are connected to each other by a hinge axis 33 and each to a hinge cup 39.

[0077] Fig. 2 Figure 1 further shows a spacer plate 200, which serves no function in the closed position of the folding door 11. In the folded position of the folding door 11, with the door elements 111, 112 aligned parallel, the front piece 2219 with the spacer rollers 229 rests against the spacer plate 200 and is pressed against the mounting part 21 and preferably aligned parallel to it, so that it occupies as little space as possible when inserted into the door compartment 10. This leaves space free for the sliding device 9, by means of which the mounting profile 12 is held slidably in a vertical orientation (see Figure 1). Fig. 5 ).

[0078] Fig. 3 The exploded view shows the holding device 2 according to the invention. Fig. 2 in a preferred embodiment. The holding device 2 comprises a mounting part 21 with a mounting body 211, a holding lever 22 with a lever body 221, a central shaft 23 for connecting the mounting body 211 and the lever body 221, an arrangement with a holding magnet 282, a locking unit 24 and a coupling unit 25 by means of which the mounting body 211, the lever body 221 and the locking unit 24 can be coupled to each other.

[0079] The central shaft 23, which is formed in one piece or in multiple parts, forms a lever joint that constitutes the first pivotal connection between the mounting part 21 and the retaining lever 22. The central shaft 23 or corresponding parts of the central shaft 23 can also be integrally formed on the mounting body 211 or on the lever body 212.

[0080] The mounting body 211 and the lever body 221 each have a preferred embodiment on their rear side with a coupling part 2111, 2211, with a bearing bore that can be penetrated by the bearing shaft 23. In the drawing, the bearing shaft 23 is inserted into the mounting body 211. The retaining lever 22 can therefore be rotated about the mounted bearing shaft 23 relative to the mounting part 21.

[0081] The coupling unit 25 comprises a coupling body 253, which holds a mounting shaft 251 at one end and a lever shaft 252 at the other end. The mounting shaft 251 and the lever shaft 252 are aligned parallel to each other. The coupling unit 25 is shown twice. Once the coupling unit 25, or rather the mounting shaft 251, is shown in conjunction with the mounting body 211, and once in conjunction with the locking unit 24. However, only one coupling unit 25 is used.

[0082] The mounting body 211 has a connection plate 2119 at both ends with a through-hole through which mounting screws can be inserted to connect the mounting body 211 to the door element 111. If the mounting body 211 is to be connected to differently designed door elements, for example, glass panels, other connecting means are provided. For example, the mounting body 211 can also be connected to the door element 111 by means of an adhesive or by a positive fit.

[0083] The mounting body 211 is partially U-shaped and comprises two side parts 2116 connected by a central body part 2117. These side parts define a receiving chamber 2110 in which the locking unit 24 can be held by friction and / or positive locking. Each of the side parts 2116 has a mounting shaft bearing in the form of a guide track 2112. The guide tracks 2112, which are aligned parallel to each other, are penetrated by the mounting shaft 251 of the coupling unit 25. The mounting shaft 251 is slidably mounted in the track-shaped mounting shaft bearing 2112.

[0084] The locking unit 24 comprises a force transmitter 241, which is slidably mounted within a housing 242 of the locking unit 24 and supported by a return spring 248 that counteracts pressure and retracts the force transmitter 241. The force transmitter 241 is also connected to a locking mechanism 249, which cyclically switches between a locked position and a released position in response to sequential pressure on the force transmitter 241. The locking mechanism 249 is described below with reference to an exemplary Fig. 14a This is explained in more detail below. Devices with a locking mechanism are available on the market. Therefore, any device with a locking mechanism can be integrated into the holding device 2. An adjustment part 245 is provided on the rear of the housing 242, by means of which the locking mechanism 249 can be positioned to precisely adjust the locking position. An adjustment channel 2114 is provided in the mounting body 211 for actuating the adjustment part 245, through which a tool, for example a screwdriver, can be inserted (see [reference]). Fig. 8 ).

[0085] The force transmitter 241 is, for example, a cylindrical piston that is slidably mounted in the hollow cylindrical housing 242. A housing collar 243 is provided on the front of the housing 242, which can be inserted into a retaining groove 2113 provided in the receiving chamber 2110 of the mounting body 211. The retaining groove 2113 holds the locking unit 24 axially immovably within the receiving chamber 2110.

[0086] At its front, the power transmitter 241 is provided with a fork-shaped connecting part 246, which has connecting tracks 2460 that are penetrated by the mounting shaft 251 of the coupling unit 25. Thus, the mounting shaft 241 of the coupling unit 24 penetrates the connecting tracks 2460 of the connecting part 246 and the track-shaped mounting shaft bearings or guide tracks 2112 of the mounting body 211. The lever shaft 252 of the coupling unit 25, on the other hand, is rotatably but immovably held in bearing openings or in a lever shaft bearing 2212 of the lever body 221.

[0087] In Fig. 3 The mounting shaft 251 is held at the front end of the guide tracks 2112. The power transmitter 241 is therefore shifted as far forward as possible.

[0088] If the retaining lever 22 is now rotated around the bearing shaft 23 against the mounting part 21, the lever shaft 252 with the coupling body 253 is moved downwards, which is why the mounting shaft 251 is moved along the guide tracks 2112 and the force transmitter 241 is inserted into the housing 242 of the locking unit 24.

[0089] The guide tracks 2112 are curved, which is why the mounting shaft 251 is not moved parallel to the longitudinal axis of the mounting body 211, but also performs a movement perpendicular to it. To allow this movement of the mounting shaft 251 perpendicular to the longitudinal axis of the mounting body 211, the connecting tracks 2460 are provided in the connecting part 246, which is connected to the force transmitter 241.

[0090] The inclination of the guideways 2112 starting from the position in which the mounting shaft 251 is in Fig. 3 The curvature allows for adjustment of the force required to actuate the locking unit. The steeper the curve, the easier it is to move the mounting shaft 251 downwards, while simultaneously reducing the axial displacement of the force transmitter 241 accordingly. On the other hand, the curvature of the guide tracks 2112 allows the guide tracks 2112 to be extended without extending by the corresponding length in the axial direction and thus without requiring a corresponding extension of the mounting body 211.

[0091] The lever body 221 has a collar opening 2213 on its upper side, into which the housing collar 243 of the housing 242 can enter. Furthermore, a tool channel 2214 is provided, through which a tool, for example a screwdriver, can be guided to the connection plate 2119 of the mounting body 211.

[0092] Furthermore, the lever body 221 has a magnetic chamber 2218, which serves to receive the holding magnet 282, a magnetic cup 283, and a damping disc 284. It is shown that the holding magnet 282 is inserted into the magnetic cup 283, supported by the magnetic cup 283 on the damping disc 284, and pierced by a connecting screw 281. This screw passes through a support spring 285 on the other side of the lever body 221 and is screwed into a threaded stud 2861 of a threaded part 286. The threaded stud 2861 has a retaining element 2863, which holds the support spring 285. The threaded stud 2861 is connected to a retaining plate 2862, which, together with the support spring 285, is inserted into a retaining chamber 2215 in the lever body 221 (see Figure 2). Fig. 6a und 6b The retaining plate 2862 is thus supported by the support spring 285 and can tilt to the side with the retaining magnet 282. The threaded stud 2861 preferably projects with sufficient clearance into a through-opening 22180, which connects the magnetic chamber 2218 with the retaining chamber 2215. The retaining magnet 282 can therefore align itself automatically with respect to the contact plate 20 and couple to it magnetically in an optimal manner, as shown below with reference to Fig. 7b will be described in more detail later. The damping disc 284, which is made of silicone, for example, prevents noise during processes for coupling or decoupling the holding magnet 282 to or from the locking element 20.

[0093] The fork-shaped front piece 2219 of the retaining lever 22 is pierced by a bearing shaft 2291, which holds two spacer rollers 229. The spacer rollers 229 prevent the lever body 221 from coming into contact with the locking element 20, a cabinet part, or the adjacent separating element 112.

[0094] Fig. 4 shows part of the folding door 11 of Fig. 2 shortly before reaching the closed position or shortly after releasing from the closed position. It is evident that the door elements 111, 112 of the folding door 11 are not yet aligned in one plane and the magnet 282 is not yet in contact with the locking element 20. The retaining lever 22 is inclined relative to the mounting part 21 and faces the locking element 20, and will first make contact with it via the spacer rollers 229 provided on the front piece 2219. The spacer rollers 229, preferably made of plastic, will hardly cause any noise.

[0095] The holding magnet 282 is recessed into the magnetic chamber 2218 and is partially enclosed by the magnetic cup 283 and extends beyond it at the front, for example by 0.2 mm - 2 mm, so that the holding magnet 282 cannot strike the locking element 20.

[0096] The locking unit 24 with the force transmitter 241 is shown schematically. The force transmitter 241, supported by the return spring 248, is axially displaceable and actuates the locking mechanism 249 (see Fig. 14a ) by displacement between a first displacement position a1, a second displacement position a2 and a third displacement position a3. The resulting function of the locking mechanism 249 is described below with reference to Fig. 14a explained.

[0097] The hinge spring 34 is tensioned in this position of the folding door 11 and the folding door hinge 3 and attempts to fold the door elements 111, 112 back against each other, contrary to the force applied by the user. The holding device 2 must therefore be magnetically coupled to the locking element 20 in the closed position and locked by means of the locking unit 24 so that the folding door 11 is held in the closed position. The hinge spring 34 is thus charged by manual force and subsequently serves to automatically fold the folding door 11 as soon as it is released from the closed position.

[0098] Fig. 5 The folding door 11 shows Fig. 4 The first door element 111 is shown in sectional view, separated from the folding door hinge 3, and the second door element 112 is shown in a parallel orientation, in which the folding door 11 can be inserted into the corresponding door compartment 10. The front piece 2219 of the retaining lever 22 rests against the spacer plate 200 with the spacer rollers 229 and holds the retaining lever 22 at least approximately in a parallel orientation to the mounting part 21. The retaining device 2 therefore occupies very little space within the door compartment 10.

[0099] The hinge levers 31, 32 of the folding door hinge 3, which are connected to each other by the hinge axis 33, were rotated against each other, which is why the hinge spring 34 is relaxed or largely relaxed.

[0100] Fig. 6a und Fig. 6b show the lever body 221 of the retaining lever 22 and Fig. 6c und Fig. 6d show the mounting body 211 of the mounting part 21, which is related to Fig. 3 These have already been partially described. The lever body 221 and the mounting body 211 are described in more detail below.

[0101] Fig. 6a Figure 1 shows the underside of the lever body 211 facing the mounting part 21. The lever body 211 is partially U-shaped and comprises two side walls 2216 connected by a central body section 2217. These side walls define a lever chamber 2210 into which the mounting part 21 can be fully or partially inserted. Also shown are the two bearing blocks of the lever shaft bearing 2212, the tool channel 2214, and the retaining chamber 2215, from which the support spring 285 and the threaded part 286 extend. Fig. 3 preferably recorded in its entirety.

[0102] Fig. 6b shows the lever body 221 of Fig. 3 with a view to the magnetic chamber 2218, into which the holding magnet 282 of Fig. 3 The holding magnet 282 and the magnetic cup 283 are shown in sectional view, which makes it visible that the threaded stud 2861 of the threaded part 286 of Fig. 3 , into which the connecting screw 281 is screwed, passes through the through-opening 22180 with clearance and is flush with the magnetic chamber 2218. The threaded part 286 is supported by the support spring 285 (see Fig. 8 ), which is why the holding magnet 282 can be lifted and pivoted by force from the magnetic chamber 2218. As soon as the holding magnet 282 detaches from the locking element 20, it is pulled back by the support spring 285 against a damping element or a damping disc 284, which dampens impact noise.

[0103] Fig. 6c shows the mounting body 211 of Fig. 3 , which is at least partially U-shaped and has two side parts 2116 connected to each other by a central body part 2117, which define a receiving chamber 2110 in which the locking unit 24 is positively retained by means of the retaining groove 2113. Each of the side parts 2116 has a guide track 2112, which are opposite each other.

[0104] Fig. 6d shows the mounting body 211 of Fig. 3 looking at the side that is connected to one of the door elements 111, 112 of Fig. 1 is connected or screwed together.

[0105] Fig. 7a shows the front side of the holding device 2 of Fig. 3 with the holding magnet 282 released from the locking element 20 before reaching or after leaving the closed position. The holding lever 22 is rotated maximally outwards and contacts the locking element or the contact plate 20 with the spacer rollers 229, which are held on the front piece 2219 of the lever body 221. If the mounting part 21 is guided further against the locking element 20, the holding magnet 282 can magnetically couple to the locking element 20 without touching it and thus without a perceptible impact noise. The front piece of the mounting body 211 is cut open to show that the mounting shaft 251 penetrates the connecting track 2460 of the connecting part 246 and the guide track 2112 of the mounting body 211 on both sides. In this position of the holding device 2, the mounting shaft 251 is at a first end 21121 (see Fig. 7b ) of the guide track 2112. The power transmitter 241 is located in Fig. 7a at the third displacement position a3 of Fig. 4 .

[0106] Fig. 7b shows the front side of the holding device 2 of Fig. 7a in the closed position of door 11 or folding door 11 of Fig. 1 In this position, the locking unit 24 is locked and the mounting shaft 251 is held firmly close to a second end 21122 of the guide track 2112. The retaining lever 22 is still slightly rotated relative to the mounting part 21, which is why the retaining magnet 282, which is magnetically coupled to the locking element 20, is compressed by the support spring 285 (see Fig. 3 ) was swung out. It should be noted that the holding device 2 is in Fig. 7b position shown, starting from the position of Fig. 7a not directly, but only via the position of Fig. 7c achieved. Likewise, the position of Fig. 7a starting from the position of Fig. 7b not directly, but only via the position of Fig. 7c The power transmitter 241 is located in Fig. 7b at the first displacement position a1 of Fig. 4 .

[0107] Fig. 7c shows the front side of the holding device 2 of Fig. 7b during the over-pressing process, by which the holding device 2 is moved into or released from the holding position. In this position, the mounting shaft 251 is guided to the end 21122 of the guide track 2112 and the force transmitter 241 is in the second displacement position a2 of Fig. 4 shifted. From this position, the holding device 2 can be returned to the holding position of Fig. 7b or into the release position of Fig. 7a brought into the release position. During the transition, the retaining lever 22 is not lifted frontally, but laterally, which is why the retaining magnet 282 can detach from the locking element 20 with reduced force.

[0108] Fig. 8 shows the holding device 2 in the position of Fig. 7a with a longitudinal section through the mounting body 211 and the lever body 221, which are pivotally connected to each other at the rear by the lever joint 23 or the central shaft 23 and at the front by the coupling unit 25. The mounting body 211 has an adjustment channel 2114 through which a screwdriver can be axially inserted to rotate the adjustment part 245 of the locking unit 24. The lever body 221 has a tool channel 2214 through which a screwdriver is inserted, by means of which a mounting screw 21191, which is guided through a stop part 2119 of the mounting body 211, can be screwed into the associated door element.

[0109] Furthermore, the holding magnet 282 and the threaded part 286 are shown, which are connected to each other by a connecting screw 281. The threaded part 286, which is arranged within the holding chamber 2215, is pushed upwards by a spiral support spring 285, which is why the holding magnet 282 and the magnetic cup 283 are pulled against the damping element 284. As soon as the holding magnet 282 comes into magnetic contact with the locking element 20, the threaded part 286 is pulled further into the holding chamber 2215 and the holding magnet 282 is pulled slightly out of the magnetic chamber 2218 and rotated against the locking element 20. The holding magnet 282 can therefore couple completely to the locking element 20 within the holding position of the holding device 2 without the holding lever 22 being aligned parallel to the locking element 20 (see Fig. 7b ).

[0110] When the holding lever 22 rotates about the lever joint 23 relative to the mounting body 21, the coupling body 253 rotates, and a force is transmitted to the force transmitter 241 via the mounting shaft 251. During this process, the mounting shaft 251 moves along the guide track 2112. In the preferred embodiment of the holding device 2 described below, this force is transmitted from the coupling body 253 to the force transmitter 241 via a coupling shaft 250.

[0111] Fig. 9a The holding device 2 is shown in a further preferred embodiment with holding magnets 282 detached from the locking element 20 before reaching the closed position or after leaving the closed position.

[0112] The holding device 2 of Fig. 9a differs from the holding device 2 of Fig. 8 essentially by the type of force transmission from the coupling unit 25 to the locking unit 24.

[0113] Furthermore, the lever joint 23, which is shifted towards the front of the mounting body 211 and by means of which the mounting body 211 and lever body 212 are pivotally connected to each other, is shown in a preferred embodiment.

[0114] The holding lever 22 is preferably equipped with two holding magnets 282, which are preferably elastically mounted or supported by a spring, for example as described with reference to Fig. 8 as described. The holding lever 22 can also have only one holding magnet 282.

[0115] Fig. 9b shows the holding device 2 of Fig. 9a with a longitudinal section through the mounting body 211 and the lever body 212, showing the locking unit 24 and the preferably configured coupling unit 25. In this configuration, the coupling body 253 of the coupling unit 25 additionally holds a coupling shaft which engages in the connecting track(s) 2460 of the connecting part 246 of the power transmitter 241. The power transmitter 241 is extended, and the plate-shaped coupling body 253 has been rotated clockwise by the holding lever 22, thereby guiding the coupling shaft 250 forward.

[0116] Fig. 10a shows the holding device 2 of Fig. 9a in the closed position of door 11 or folding door 11 of Fig. 1 with the holding magnets 282, which are magnetically coupled to the locking element 20.

[0117] Fig. 10b shows the holding device 2 of Fig. 10a with a longitudinal section through the mounting body 211 and the lever body 212. By rotating the retaining lever 22, the coupling body 253 was rotated counterclockwise and the power transmitter 241 was almost completely inserted into the locking unit 24.

[0118] Fig. 11a shows the holding device 2 of Fig. 9a during the over-pressing process by which the holding device 2 is brought into the holding position or released from the holding position.

[0119] Fig. 11b shows the holding device 2 of Fig. 11a with a longitudinal section through the mounting body 211 and the lever body 212. The retaining lever 22 was pressed further downwards and the coupling body 253 was rotated further counterclockwise. This caused the force transmitter 241 to be fully inserted into the locking unit 24 and the locking mechanism 249 to be overridden and released from the holding position or engaged in the holding position.

[0120] Fig. 12 shows the holding device 2 of Fig. 9a In exploded view. The coupling part 2211 of the retaining lever 22 is fork-shaped and has two inwardly oriented lever shafts 23 or lever shaft segments 23, which can be inserted into bearing openings 21110 via mounting tracks 21111. The lever shaft segments 23 have flattened sections that allow insertion through the L-shaped mounting track 21111 into the bearing openings 21110, in which the lever shaft segments 23 are subsequently rotated and rotatably held.

[0121] Fig. 13a shows the holding device 2 of Fig. 9a In an exploded view from the front, a dashed line L12 symbolically shows that the lever shaft segments 23 of the retaining lever 22 correspond to the bearing openings 21110 of the mounting body 21. Line L51 shows that the mounting shaft 251 is held in the mounting body 21. Line L25 shows that the lever shaft 252 is held in the lever body 221. Line L45 shows that the coupling shaft 250 is held in the connecting part 246 of the locking unit 24.

[0122] Fig. 13b shows the holding device 2 of Fig. 9a Exploded view from the rear. Optionally, a second return spring 248' is provided, which in all embodiments of the holding device 2 can act on the mounting part 21 and on the holding lever 22 to rotate them apart as soon as the locking device 24 is released. For example, coils of the return spring 248' enclose the central shaft 23, while end pieces of the return spring 248' bear against the mounting body 211 and the lever body 221.

[0123] Fig. 13c shows the holding device 2 of Fig. 9a The diagram shows a longitudinal section through the mounting body 211 and the lever body 212 from the side. Arrows indicate the corresponding elements of the joint system. The mounting shaft bearing 2112 consists of two opposing bearing sleeves in which the mounting shaft 251 is held. The lever shaft bearing 2212, in which the lever shaft 252 is held, is designed as a track. The coupling shaft 250, on the other hand, is slidably held in the connecting track 2460 of the connecting part 246. The track-like designs of the lever shaft bearing 2212 and the connecting track 2460 allow the lever shaft 252 and the coupling shaft 250 to move laterally during rotation of the coupling body 253. Guide tracks can therefore be used as needed to allow free rotation of the coupling unit 25.

[0124] Furthermore, the return spring 248, which acts on the force transmitter 241, is shown. The return spring 248' can thus be distinguished from Fig. 13b and / or the return spring of Fig. 13c The return spring 248 or the return springs 248, 248' may also be provided in other configurations.

[0125] Fig. 14a shows in a basic representation the locking unit 24 of Fig. 3 or Fig. 9a with the force transmitter 241, which is held in a cylindrical housing 242, supported on a return spring 248 and connected via a lever joint 2410 to a recirculating lever 2411. The recirculating lever 2411 projects with a front piece into a recirculating mechanism 249, which includes a recirculating channel 2490 that encloses a core 2491. During axial displacements of the force transmitter 241 between the first displacement position a1, the second displacement position a2 and the third displacement position a3 (see Fig. 4 The front piece of the rotary lever 2411 is guided cyclically around the frog 2491 in a clockwise direction within the rotary channel 2490. From a release position p2, in which the holding device 2 maintains the position of Fig. 7a or Fig. 9a When the lever 2411 is moved into a first transition position p31 by overpressing the holding device 2, the holding device 2 is in the position of Fig. 7c or Fig. 11a assumes. If the pressure is now removed from the holding device 2, the rotary lever 2411 is moved into a locking position p1, in which the rotary lever 2411 is held by the frog 2491 and the holding device 2 assumes the position of Fig. 7b or Fig. 10a As soon as renewed pressure is applied to the holding device, the rotary lever 2411 is moved from the locking position p1 to a second transition position p32, in which the holding device 2 assumes the position of Fig. 7c or Fig. 11a The force transmitter 241 is moved into the locking position p1 and from there back into the release position p2. Therefore, by first pressing it over, the force transmitter 241 can be moved into the locking position p1 and by a second pressing it back into the release position p2.

[0126] Fig. 14a further shows the coupling unit 25, which is connected to the connecting part 246 of the power transmitter 241 by the mounting shaft 251, as is also shown in Fig. 8 The mounting shaft 251 thus fulfills a dual function, being pivotally coupled to the connecting part 246 on the one hand and to the mounting body 211 on the other. A preferably provided coupling shaft 250, which is preferably coupleable to the connecting part 246 instead of the mounting shaft 251, is shown in dashed lines.

[0127] Fig. 14bFigure 25 shows the coupling unit in the configuration of a knee joint with a coupling body 253, which has two coupling levers 2531, 2532 connected to each other by the coupling shaft 250, which is designed to act on the force transmitter 241. The lever shaft 252 is in turn pivotally connected to the lever body 221, and the mounting shaft 251 is pivotally connected to the mounting body 211. When the lever shaft 252 and the mounting shaft 251 are actuated, the coupling shaft 250 is deflected and the force transmitter 241 is actuated. Reference symbol list:

[0128] 1 Functional unit, piece of furniture, in particular cabinet 1A Side walls 1B Top panel 1C Bottom panel 1D Partition 10 First or second door compartment or parking space 100 Interior of the functional unit 1 111 First door element 112 Second door element 11 Door or folding door 12 Mounting profile 13 Stop hinges 15A Support rail for the support mechanism 5A 15B Guide rail for the guide mechanism 5B 151 Support element 152 Guide channel 2 Holding device 20 Magnetic or ferromagnetic locking element 200 Spacer plate 21 Mounting part 211 Mounting body 2110 Receiving chamber 2111 Coupling part 21110 Bearing opening 21111 Mounting track 2112 Mounting shaft bearing, guide track 21121 First end of the guide track 2112 21122 Second end of guide track 2112 2113 Retaining groove 2114 Adjustment channel 2115 Chamber extension 2116 Side parts 2117 Body center part 2119 Connection plate 21191 Mounting screw 22 Retaining lever 221 Lever body 2210 Lever chamber 2211 Coupling part 2212 Lever shaft bearingGuide track 2213 Collar opening 2214 Tool channel 2215 Holding chamber 2216 Side walls 2217 Body center piece 2218 Magnet chamber 22180 Through opening 2219 Front piece 22190 Bearing opening 229 Spacer rollers 2291 Bearing shaft 23 Lever joint, central shaft 24 Locking unit 241 Power transmitter 2410 Lever joint 2411 Circulating lever 242 Housing 243 Housing collar 245 Adjusting part 2450 Engagement element 246 Connecting part 2460 Connecting track 2461 Connecting plates 248 Return spring 249 Locking mechanism 2490 Circulating channel 2491 Core piece 25 Coupling unit 250 Coupling shaft 251 Mounting shaft 252 Lever shaft 253 Coupling body,one-piece or multi-piece 2531 first lever part 2532 second lever part 281 connecting screw 282 retaining magnet 283 magnet cup 284 damping washer 285 support spring 286 threaded part 2863 retaining element 2861 threaded pin 2862 retaining plate 2863 retaining element 3 folding door hinge 31 first hinge lever 32 second hinge lever 33 hinge axle 34 hinge spring 341 first spring assembly 342 second spring assembly 343 spring center piece 39 mounting part, hinge cup 5A track assembly 5B guide assembly 51 support rollers 52 guide rollers 53 first track assembly part 54 second track assembly part 9 sliding device a1 first sliding position a2 second sliding position a3 third sliding position p1 Locking position p2 Release position p31 First transition position p32 Second transition position x Rotation axis y Lever axis

Claims

1. Holding device (2) for holding a pivotally mounted door element (111) in a closed position and for releasing the door element (111) from the closed position, with a locking unit (24), which comprises a force transmitter (241), that has a connection part (246), and a locking mechanism (249), which locking mechanism (249) by means of the force transmitter (241) by the application of pressure is cyclically transferable between a locking position (p1), in which the locking mechanism (249) reaches a holding stance and the holding device (2) is connectable or connected to a locking element (20), and a release position (p2), in which the locking mechanism (249) reaches a release stance and the holding device (2) is disconnectable or disconnected from the locking element (20), wherein the locking element (20) consists at least partially of magnetic or ferromagnetic material, a mounting part (21) with a mounting body (211) and a holding lever (22) with a lever body (221) are provided, the mounting body (211) is connectable to the door element (111) and is connected by a lever joint (23) to the lever body (221), the lever body (221) comprises a front piece (2219), which holds at least one holding magnet (282), which in the holding stance is force-lockingly connected or connectable to the locking element (20), and a coupling unit (25) is provided with a single-part or multi-part coupling body (253), which distanced from the lever joint (23) on the one hand is pivotally connected to the mounting body (211) and on the other hand is pivotally connected to the lever body (221) and is pivotally connected to the connection part (246) of the locking unit (24).

2. Holding device (2) according to claim 1, characterised in, that the coupling body (253) is connected to a lever shaft (252), which is held by the lever body (212), and with a mounting shaft (251), which is held by the mounting body (211), and that the coupling body (253) by means of the lever shaft (252), by means of the mounting shaft (251) or by means of a coupling shaft (250) is pivotably connected to the connection part (246) of the locking unit (24).

3. Holding device (2) according to claim 2, characterised in, that the lever shaft (252) is held in the lever body (212) in a guide track and is pivotally connected to the connection part (246) of the locking unit (24), or that the mounting shaft (251) is held in the mounting body (211) in a guide track (2112) and is pivotally connected to the connection part (246) of the locking unit (24).

4. Holding device (2) according to claim 1, 2 or 3, characterised in, that the coupling unit (25) comprises a coupling body (253) with a first lever part (2531) and a second lever part (2532) and a coupling shaft (250), which interacts directly or indirectly with the connection part (246) of the force transmitter (241) and which on the one hand is pivotally connected by the first lever part (2531) and the mounting shaft (251) to the mounting body (211) and on the other hand by the second lever part (2532) and the lever shaft (252) to the holding body (221).

5. Holding device (2) according to one of the claims 1 - 4, characterised in, that the mounting body (211) comprises a receiving chamber (2110) in which the locking unit (24) is held in a force-fitting or form-fitting manner, or that the lever body (212) comprises a lever chamber (2210) in which the locking unit (24) is held in a force-fitting or form-fitting manner, and that the mounting body (211) and the lever body (212) are preferably insertable into one another.

6. Holding device (2) according to one of the claims 1 - 5, characterised in, that a reset spring (248) is provided which acts directly or indirectly on the force transmitter (241) or on the coupling unit and automatically returns the locking unit (24) from the holding stance to the release stance.

7. Holding device (2) according to one of the claims 1 - 6, characterised in, that the connection part (246) comprises at least one connection plate (2461) which is provided with a connection track (2460), within which the lever shaft (252), the mounting shaft (251) or the coupling shaft (250) is slidably held.

8. Holding device (2) according to one of the claims 1 - 7, characterised in, that at least one spacer roller (229) is rotatably held at the front piece (2219) of the lever body (221).

9. Holding device (2) according to one of the claims 1 - 8, characterised in, that the front piece (2219) of the lever body (221) comprises a magnet chamber (2218), into which the at least one holding magnet (282) is sunk or into which several holding magnets (282) are sunk.

10. Holding device (2) according to claim 9, characterised in, that a through-opening (22180) adjoins the magnet chamber (2218), through which a connection screw (281) is passed, which connects the holding magnet (282) to a threaded element (286), which is supported on a support spring (285) and which holds the holding magnet (282) axially displaceable or swivellable or axially displaceably and swivellable.

11. Holding device (2) according to one of the claims 1 - 10, characterised in, that the holding magnet (282) is at least partially enclosed by a magnet cup (283) made of plastic and is overlapped to such an extent, that direct contact between the holding magnet (282) and the locking element (20) is avoided, or that the holding magnet (282) is at least partially enclosed by a magnet cup (283) made of plastic which is supported on a damping element (284).

12. Functional unit (1) with a door element (111) and a holding device (2) according to one of the claims 1 - 11, which holding device (2) is connected to the door element (111) and is provided to interact with a locking element (20) connected to a stationary part of the functional unit (1), or which holding device (2) is connected to a stationary part of the functional unit (1) and is provided to interact with a locking element (20) connected to the door element (111).

13. Functional unit (1) according to claim 12, characterised in, that the holding device (2) is arranged at the lower side or the upper side of the door element (111) or that a holding device (2) is arranged each at the lower side and the upper side of the functional unit (1).

14. Functional unit (1) according to claim 12 or 13, characterised in, that the door element (111) is connected by at least one foldable-door hinge (3) to an additional door element (112), or that the door element (111) is connected by at least one foldable-door hinge (3) to an additional door element (112), which at least one folding door hinge (3) is equipped with a hinge spring (34) that connects the hinge arms (31, 32) of the folding door hinge (3), which are linked together by a hinge pin (33), to each other.

15. Functional unit (1) according to claim 12, 13 or 14, characterised in, that the door element (111) is connected by mounting hinges (13) with a mounting profile (12) which is held displaceable within a door compartment (10) of the piece of furniture (1).

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