Rail device and functional unit

Abstract

The rail device (2) has a rail axis (x), along which a runner assembly (5) of a support roller (51) and two guide rollers (52) can be guided, and comprises a first rail section (21) having a first support body (211) and a first guide channel (212), a second rail section (22) having a second support body (221) and a second guide channel (222), and a connecting device (3), by means of which mutually facing end pieces (21E, 22E) of the two rail sections (21, 22) are connected together. According to the invention, it is provided that the rail device (2) also comprises a rail adapter (23), by means of which the first and second rail sections (21, 22) can be connected to one another at a selectable mutual distance, that the rail adapter (23) has a third support body (231) and a third guide channel (212), that the end piece (21E) of the first rail section (21) has a recess (210), into which the rail adapter (23) is completely or partially pushed, that the support bodies (211, 222, 231) of the first and second rail section (21, 22) and of the rail adapter (23) are aligned coaxially with one another and form a support track (TI), which serves to support the support roller (51), and that the guide channels (212, 222, 232) of the first and second rail sections (21, 22) and of the rail adapter (23) are aligned coaxially with one another and have a completely or partially identical inner cross-section and form a first guide track (T21) or a first and a second guide track (T21, T22), which serve to guide the guide rollers (52).

Description

[0001]Rail device and functional unit The invention relates to a rail device with at least two interconnected rail sections and to a functional unit, in particular a piece of furniture, with at least one such rail device. Partition elements, optionally foldable partition elements such as folding doors or folding-sliding doors, are used to close off functional units, such as openings in rooms or pieces of furniture. Partition elements are preferably provided which, after the opening has been cleared, are pushed into a door compartment or a parking space so as not to cause interference. 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 to the mounting profile by stop hinges and at the front to the rear of a second door element by door hinges, the second door element being connected at the front to a guide carriage. The mounting profile is held in a vertical orientation by a support device and provided with support carriages on the top and bottom, which are guided in a support rail. The guide carriage can be moved along a rail device having three rail sections, of which a first and a second rail section are connected to one another by a third rail section running along a curve. The first rail section runs straight into the door compartment and the second rail section runs straight along the front of the piece of furniture.The guide carriage can therefore be moved between a first end stop and a second end stop using the guide track. 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 flush with one another. To open the piece of furniture, the folding door is folded shut again, with the door elements in an open position, preferably aligned parallel to one another, being retracted into the door compartment. For functional and aesthetic reasons, it is generally desirable for the track device to have a specified length in all sectors so that track sections can be guided precisely to the next HAWA 23-01 PCT / 04.03.24 track section or precisely to a wall.When installing a functional unit, it is therefore often necessary to cut rail sections to a required length and, if necessary, adapt them to the functional unit, which may deviate from the intended dimensions. Installing the rail device and thus the functional unit can therefore be a significant effort and require the provision of metalworking tools. JP2009299305A relates to a cabinet having a selectable number of sections that can be locked by means of sliding doors or folding sliding doors that can be moved along a guide rail using guide runners. Regarding the selectable number of sections of this cabinet, it is not possible to provide a single guide rail. Instead, rail sections must be provided for each of the sections of the cabinet.The individual rail sections are tightly connected to one another by means of a connecting structure comprising a metal plate and two insert plates. The insert plates are made of a rubber-like sealing material and are each glued to one side of the metal plate. The two insert plates and the metal plate held between the insert plates are inserted between the facing end faces of the rail sections. To ensure that the metal plate and the insert plates are held coaxially with the rail sections, connecting rods are provided which penetrate the insert plates and the metal plate and are held in the rail sections. Finally, the rail sections, which are provided with angle pieces, are pulled against one another by connecting screws. The connecting device of JP2009299305A therefore serves to tightly connect two rail sections.The resulting distance between the mutually facing end faces of the rail sections is fixed. According to JP2009299305A, adjustment of this distance is not provided. The force with which the rail sections are pulled against the insert panels must be kept within a range in which the insert panels are held tightly but are not damaged by excessive pressure. Adjusting the distance between the end faces of the rail sections is therefore hardly possible. WO2018204952A1 discloses a guide system for guiding a furniture door with a guide rail comprising a first and a second rail section that can be connected to one another by a connecting piece of a fixed size (HAWA 23-01 PCT / 04.03.24). Adjusting the distance between the end faces of the rail sections is not possible.WO2018204952A1 discloses another guide system for guiding a furniture door, comprising a guide rail comprising a first and a second rail section that can be connected to one another by a connecting piece of a fixed size. This device provides that the connecting piece can be connected to a part of the furniture in order to hold the interconnected end pieces of the rail sections. Adjusting the distance between the end faces of the rail sections is not possible with this device either. The present invention is therefore based on the object of creating an improved rail device having at least two rail sections, as well as a functional unit with such a rail device. The rail device according to the invention should be installable with little effort and without metalworking tools. In particular, the cutting of rail sections should be eliminated.Likewise, the provision of differently dimensioned connecting pieces should be avoided. Rail sections for a functional unit with predetermined dimensions should therefore be able to be supplied in standard sizes. The rail device should allow one or more drives to be optimally supported and / or guided. The rail device should also be suitable for holding and guiding any drives. Drives should be able to be moved within the rail device as quietly and with as little wear as possible. Disturbing transitions or gaps between the rail sections should be avoided. Furthermore, the rail device should have an advantageous appearance. This object is achieved with a rail device according to claim 1 and a functional unit, optionally a piece of furniture, according to claim 15. Advantageous embodiments of the invention are specified in further claims.The rail device, by means of which a running gear having at least one support roller and two guide rollers can be guided along a rail axis, comprises a first rail section with a first support body and a first guide channel, a second rail section with a second support body and a second guide channel, and a HAWA 23-01 PCT / 04.03.24 connecting device, by means of which mutually facing end pieces of the two rail sections are connected to one another.According to the invention it is provided that - the rail device also comprises a rail adapter, by means of which the first and second rail sections can be connected to one another at a selectable mutual distance, - the rail adapter has a third support body and a third guide channel, - the end piece of the first rail section has a recess into which the rail adapter is fully or partially pushed, - the support bodies of the first and second rail sections and of the rail adapter are aligned coaxially to one another and form a support track which serves to support the support roller, and - the guide channels of the first and second rail sections and of the rail adapter are aligned coaxially to one another and have a fully or partially identical internal cross-section and form a first guide track or a first and a second guide track which serve to guide the guide rollers.The track adapter can therefore be fully or partially pushed into the facing end piece of the first track section, which is why the distance between the facing end pieces of the first track section and the second track section can also be optionally adjusted. Cutting the track sections during installation of the track device is therefore not necessary, which is why they can be provided in standard sizes or standard lengths. The track adapter is adjustable or can be optionally pushed into the corresponding end piece of the first track section, which is why the track adapter is also referred to as an adjustable track adapter. The track device can be installed in a functional unit, for example in a piece of furniture, quickly and easily and, in particular, without the need for metalworking tools. HAWA 23-01 PCT / 04.03.24 The rail adapter, or essentially the front piece of the rail adapter, appears between the two rail sections. This solution not only advantageously connects the rail sections to one another, but also provides an advantageous aesthetic feature. The first and second rail sections are preferably made of metal. The rail adapter, on the other hand, can be made of metal or, particularly inexpensively, of plastic. A color or color combination can be chosen for the rail adapter that has a visually advantageous appearance. Instead of a mechanical transition between the rail sections, which could possibly be advantageous, a striking optical transition results, which can be designed as desired. The distance between the two rail sections is irrelevant.The rail adapter located between them always forms a distinctive feature. The rail elements for supporting and guiding the support rollers and guide rollers and / or stabilizing rollers can be arranged as desired. In a preferred embodiment, it is provided that - the first rail section comprises a first front wall, on which the first support body is provided, and a first head piece, in which the first guide channel is provided; - the second rail section comprises a second front wall, on which the second support body is provided, and a second head piece, in which the second guide channel is provided; and - the rail adapter comprises a third front wall, on which the third support body is provided, and a third head piece, in which the third guide channel is provided.The track device can therefore be designed for trolleys that have one or more support rollers, one or more guide rollers, and one or more stabilizing rollers. The support roller is designed to support the load of the connected separating element. The guide rollers are designed to prevent the trolley from rotating around a vertical axis and from becoming perpendicular to the running direction. The optional stabilizing roller is typically designed to keep the trolley in a vertical orientation. HAWA 23-01 PCT / 04.03.24 In preferred embodiments, it is therefore optionally provided that the first rail section has a first stabilization channel, the second rail section has a second stabilization channel, and the rail adapter has a third stabilization channel, which stabilization channels are aligned coaxially with one another and have a completely or partially identical internal cross-section and form a first stabilization track or a first and a second stabilization track which serve to guide the stabilization rollers. Preferably, the first stabilization channel is provided in the first support body, the second stabilization channel in the second support body, and the third stabilization channel in the third support body. The support roller of the running gear can therefore roll on the upper side of the support body, while the stabilization roller can engage in the stabilization channel on the underside of the support body.The dimensions of the rail adapter are designed to be completely or partially complementary to the recess in the end piece of the first rail section. The rail adapter can therefore be at least partially inserted into the associated end piece of the first rail section, whereby the complementary design of the rail adapter means that the recess is or can be at least partially refilled according to the dimensions of the removed material. The rail adapter can be fully or partially inserted into the end piece of the first rail section, but preferably projects axially outwards beyond it, regardless of the extent of the mutual displacement. The recess can be machined or formed into the end piece of the first rail section by mechanical processing, such as milling, or by molding and casting. Machining marks marking the milled recesses are therefore shown in Figures 8c and 9c.It is preferably provided that a part of the support body of the first rail section and a part of the support body of the rail adapter, which contribute to the formation of the support track, are displaced laterally next to one another when the rail adapter is displaced, and / or that a part of the guide channel of the first rail section and a part of the guide channel of the rail adapter, which contribute to the formation of the guide tracks HAWA 23-01 PCT / 04.03.24, are displaced above and below one another when the rail adapter is displaced, and / or that a part of the stabilization channel of the first rail section and a part of the stabilization channel of the rail adapter, which contribute to the formation of the stabilization tracks, are displaced one above the other when the rail adapter is displaced.These measures ensure that the support roller and / or the guide rollers and / or the stabilizing roller always rest against a part of the support track, a part of the guide tracks and a part of the stabilizing tracks, even in the transition area between the rail sections. In the transition area, the support roller and / or the guide rollers and / or the stabilizing roller always rest against a part of the first support body and a part of the third support body and / or a part of the first guide channel and a part of the third guide channel and / or a part of the first stabilizing channel and a part of the third stabilizing channel. This results in a controlled and step-free transfer of the running gear from the first rail section to the rail adapter and preferably further to the second rail section.The transition from the rail adapter to the second rail section can be implemented analogously, with the same or different dimensions as the transition from the rail adapter to the first rail section. The facing end piece of the second rail section can therefore also have a recess into which the rail adapter is inserted. However, the rail adapter and the end face of the second rail section are preferably flush with each other.In preferred embodiments, it is provided that - the first rail section in the first guide channel has a recess into which a complementary and outwardly tapered guide wing of the third guide channel of the rail adapter projects, or - the first rail section in the first guide channel has a recess on each of the opposite sides, into which complementary and outwardly tapered guide wings of the third guide channel of the rail adapter project. The guide wings of the rail adapter, which project into the first guide channel of the first rail section, serve as auxiliary webs onto which the HAWA 23-01 PCT / 04.03.24 guide rollers can switch while they are still guided in the first guide channel.In a further preferred embodiment, it is provided that - the first rail section in the first stabilization channel has a recess into which a complementary and outwardly tapered stabilization wing of the third stabilization channel of the rail adapter projects, or - the first rail section in the first stabilization channel has a recess on each of opposite sides, into which complementary and outwardly tapered stabilization wings of the third stabilization channel of the rail adapter project. The stabilization wings of the rail adapter, which project into the first stabilization channel of the first rail section, serve as auxiliary webs onto which the stabilization roller can transfer while still being guided in the first stabilization channel. Preferably, the guide wings and / or the stabilization wings each have two flanks inclined towards one another.For example, the guide wings and / or the stabilizing wings are triangular or trapezoidal in shape so that they can interact with complementary parts of the first guide channel, which may also be triangular or trapezoidal in shape. It should be noted that the load of the separating element, possibly the load of a door or folding sliding door, is transferred to the rail device via the support roller of the carriage. In preferred embodiments, the support bodies of the first and second rail sections and of the rail adapter have a receiving channel, into which receiving channels a running rod is inserted, which projects beyond the third support body of the rail adapter and preferably tapers on one or both sides. The running rod is held on both sides in the receiving channels of the first and second rail sections and can therefore absorb high loads.The support roller of the carriage is preferably provided with an annular groove into which the guide rod can engage as the carriage travels. The support roller is thus stably supported and safely guided by the guide rod. HAWA 23-01 PCT / 04.03.24 In a further preferred embodiment, the first and second rail sections and the rail adapter each have at least one mounting channel, into which mounting channels, which are aligned coaxially with one another, a connecting rod is inserted. The mounting channels are preferably inserted into the support bodies of the first and second rail sections and the rail adapter, so that the support body of the rail adapter is held stably.In a further preferred embodiment, it is provided that the head pieces of the first and second rail sections and of the rail adapter each have an installation channel, which installation channels are aligned coaxially with one another, that the connecting device has a connecting plate and locking screws rotatably held in the connecting plate, and that the connecting plate is held axially displaceably in the installation channels and fixed by means of the locking screws. In this way, the two rail sections and the rail adapter located between them can be connected to one another in a simple manner. The solution according to the invention can be advantageously used for any rail device. The first and second rail sections can each run straight or at least partially along a curve.The first rail section can also run straight and the second rail section at least partially along a curve, or vice versa. The rail device according to the invention can be advantageously installed and used in any functional units, in particular in pieces of furniture. A rail device according to the invention can also have more than two rail sections and more than one adjustable rail adapter. The invention is explained in more detail below with reference to drawings. There shows: Fig. 1 a functional unit 1 according to the invention in the design of a piece of furniture with a folding door 11 with two door elements 111, 112 connected to one another by door hinges 14 and a rail device 2 which has a first rail section 21 running along a curve and a second rail section 22 running along the front of the functional unit 1, which rail section is connected by an adjustable HAWA 23-01 PCT / 04.03.24 rail adapters 23 are connected to one another, and in which a guide carriage 5, which holds one of the door elements 112 of the folding door 11, is slidably mounted; Fig. 2 shows the rear of the folding door 11 of the functional unit 1 from 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 door hinges 14 to the second door element 112, on which the guide carriage 5 is mounted and the rail device 2 with the first and second rail sections 21 and 22, which are shown in abbreviated form and are connected to one another by the rail adapter 23, which is shown schematically; Fig. 3 shows the rail device 2 and the guide carriage 5 from Fig. 2 in a preferred embodiment from the front side; Fig. 4 shows the end piece 21E of the first rail section 21 from Fig.3, which has a recess 210 for completely or partially receiving the rail adapter 23, the released rail adapter 23 and the end piece 22E of the second rail section 22 facing the rail adapter 23; Fig. 5a shows the rail device 2 from Fig. 3 with the second rail section 22 in a sectional view and with the guide carriage 5 inserted; Fig. 5b shows the rail device 2 from Fig. 3 with the second rail section 22 detached from the rail adapter 23; Fig. 5c shows the rail device 2 from Fig. 3 with the rail adapter 23 from which the first rail section 21 and the second rail section 22 are detached; Fig. 6a shows the rail device 2 from Fig. 4 with the end piece 21E of the first rail section 21 detached from the rail adapter 23; HAWA 23-01 PCT / 04.03.24 Fig. 6b the rail device 2 of Fig.6a with the rail sections 21, 22 connected to one another at a predetermined distance by the rail adapter 23 and a connecting device 3; Fig. 7a shows the rail adapter 23 of Fig. 5 with a connecting device 3 and a connecting rod 9, by means of which the two rail sections 21, 22 can be connected to one another, and with a running rod 8, which is provided for engagement in the two rail sections 21, 22 and over which the support roller 51 of the guide carriage 5 of Fig. 4a can roll; Fig. 7b shows the rail adapter 23 of Fig. 7a without the connecting device 3, the connecting rod 9 and the running rod 8; Fig. 7c shows the rail adapter 23 of Fig. 7b in a further preferred embodiment with a recoil spring 235 provided on the front wall 23F; Fig. 7d shows the rail adapter 23 of Fig. 7c inserted between the end pieces 21E, 22E of the first and second rail sections 21, 22; Fig. 8a shows the rear side of the rail adapter 23 of Fig.6a, which is partially inserted into a recess 210 in the facing end piece 21E of the first rail section 21; Fig. 8b the rail adapter 23 of Fig. 8a, which is fully inserted into the recess 210 in the facing end piece 21E of the first rail section 21; Fig. 8c the first rail section 21 of Fig. 8a with the end piece 21E, into which the recess 210 is machined; Fig. 9a the rail adapter 23 and the first rail section 21 of Fig. 8a from above; HAWA 23-01 PCT / 04.03.24 Fig. 9b the rail adapter 23 and the first rail section 21 of Fig. 8b from above; Fig. 9c shows the first rail section 21 of Fig. 8c with the end piece 21E, into which the recess 210 is machined, from a different angle; Fig. 10a shows the rail device 2 in a sectional view along the section line A-A of Fig. 6b, looking towards an inner side; and Fig. 10b shows the rail device 2 in a sectional view along the section line A-A of Fig.6b with a view of another interior side. Fig. 1 shows a functional unit 1 according to the invention in the form of a piece of furniture 1 with a folding door 11 that can be inserted into a first door compartment 10, and with a one-piece door 11' that 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, and partition walls 1D on both sides, which, together with the side walls 1A, delimit the door compartments 10. The folding door 11 has a first partition element or door element 111, which is connected on one side by stop hinges 13 to a mounting profile 12, and on the other side by door hinges 14 to a second partition element or door element 112, the dimensions of which 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 retracted into the door compartment 10 with the door elements 111, 112 aligned parallel to one another, or fully unfolded and moved into a closed position in which the two door elements 111, 112 are at least approximately aligned in one plane. In the embodiment of Fig. 1, the mounting profile 12 is held by a sliding device 19, shown schematically, and can be moved within the associated door compartment 10. The doors 11 are aligned parallel to the side wall 1A in front of the associated door compartment 10 and can subsequently be moved into the door compartment 10. For displacement within the door compartment 10, each mounting profile 12 can also be provided with drive devices.Preferably, the mounting profile 12 is connected at the top to a support carriage 15, which can be moved along an associated guide rail 16 into the door compartment 10. The mounting profile 12 can also be connected at the bottom to a carriage guided in a guide rail. The second door element 112 of the folding door 11 is connected at the leading edge to a guide carriage 5, which is guided in a rail device 2, which is shown fragmentarily. The rail device 2 comprises a first rail section 21, which runs along an arc into the associated door compartment 10, and a second rail section 22, which extends along the front of the piece of furniture 1. The two rail sections 21, 22 are connected to one another by a rail adapter 23 according to the invention (see Fig. 5c).The rail adapter 23 can be moved by a corresponding amount into a recess 210 provided in the facing end piece 21E of the first rail section 21 in order to compensate for tolerances when cutting the second rail section 22 or during the manufacture of the piece of furniture 1. The second rail section 22 can therefore be supplied in a standard size and easily installed in the rail device 2 by moving the rail adapter 23 into the end piece 21E of the first rail section 21 as needed. The folding door 11 is therefore held at the front by means of the guide carriage 5, which can be moved along the front of the piece of furniture 1 when the folding door 11 is unfolded and into the door compartment 10 when the folding door 11 is folded. The guide carriage 5 always runs ahead of the second door element 112 in the direction of movement. Fig. 2 shows the back of the folding door 11 of the functional unit 1 of Fig.1 with the first door element 111, which in this embodiment is connected to the mounting profile 12 at the trailing edge by stop hinges 13 and to the second door element 112 at the leading edge by door hinges 14 and mounting parts 17, on the front side of which the guide carriage 5 is mounted. Also shown is the support carriage 15, which is connected to the mounting profile 12 and is movable along the support rail 16. The guide carriage 5 and the support carriage 15 are each provided with a carriage body 54, 154, with a support roller 51, 151, and with two guide rollers 52, 152. HAWA 23-01 PCT / 04.03.24 The rail device 2, in which the guide carriage 5 is guided, consists of two interconnected rail sections 21, 22. The rail device with the support rail 16 can also consist of several rail sections, which can be or are connected to one another by rail adapters 23 according to the invention.The invention is explained by way of example with reference to the rail device 2 provided for the guide carriage 5. The two rail sections 21, 22 have corresponding cross-sections and each comprise a front wall 21F, 22F with a head piece 21T, 22T and a foot piece 21B, 22B. A support body 211, 221 is provided on each front wall 21F, 22F, and a guide channel 212, 222 is provided in each head piece 21T, 22T. The support bodies 211, 221, which serve to support the support roller 51 of the guide carriage 5, and the guide channels 212, 222, which serve to guide the guide rollers 52 of the guide carriage 5, are coaxially aligned with one another at the end faces and are connected to one another by the rail adapter 23. The schematically shown rail adapter 23 allows the rail sections 21, 22 to be moved against each other and also ensures a safe and stepless transition of the guide carriage 5 between the rail sections 21, 22. Fig.3 shows the rail device 2 and the guide carriage 5 of FIG. 2 in a preferred embodiment from the front. In this embodiment, the guide carriage 5 is additionally provided with a stabilizing roller 53 and a coupling device 55, by means of which the held door element 112 can be coupled. It can be seen that the axes of rotation of the guide rollers 52 and the axis of rotation of the stabilizing roller 53 are aligned perpendicular to the axis of rotation of the support roller 51. It is shown that the support roller 51 can be supported on the support body 221 of the second rail section 22, whereby the guide rollers 52 can be inserted into the guide channel 222 and the stabilizing roller 53 into a stabilizing channel 223 on the underside of the support body 221. The load acting from the door element 112 is transferred to the rail device 2 via the support roller 51.The guide rollers 52 ensure that the guide carriage 5 cannot rotate relative to the rail axis x. The guide rollers 52 and the stabilizing roller 53 also ensure that the guide carriage 5 is held in a vertical alignment. HAWA 23-01 PCT / 04.03.24 The inventive rail device 2, which comprises the two rail sections 21, 22 connected to one another by the rail adapter 23, can, however, also be implemented for carriages in a different configuration. For example, the guide rollers 52 can be arranged below the support roller 51 and guided in the stabilizing channel 223. The optionally provided stabilizing roller 53, on the other hand, can be arranged above the support roller 51 and guided in the guide channel 222.In the present embodiment, the rail device 2 comprises a support track T1, which is realized by the support bodies 211, 221 of the two rail sections 21, 22 and by a support body 231 of the rail adapter 23 (see Fig. 4). Furthermore, the rail device 2 comprises two guide tracks T21, T22, which are realized by the guide channels 212, 222 of the two rail sections 21, 22 and by a guide channel 232 of the rail adapter 23 (see Fig. 4). Furthermore, the rail device 2 comprises two stabilization tracks T31, T32, which are realized by the stabilization channels 213, 223 of the two rail sections 21, 22 and by a stabilization channel 233 of the rail adapter 23 (see Fig. 4).The rail adapter 23 is held between the mutually facing end pieces 21E, 22E of the two rail sections 21, 22 and is preferably dimensioned such that it always protrudes from the end piece 21E of the first rail section 21 and is visible. The first and second rail sections 21, 22 are preferably made of metal. The rail adapter 23 is preferably made of metal or plastic. The rail adapter 23 preferably has a color that advantageously stands out between the two rail sections 21, 22. The two rail sections 21, 22 and the rail adapter 23 (see Fig. 4) preferably each have an installation channel 217, 227, 237 into which a connecting plate 31 of a connecting device 3 can be inserted, which can be clamped by means of locking screws 32 in order to mutually fix the rail sections 21, 22 and the rail adapter 23 in a selected position.It is shown that the rear end piece of the first rail section 21 is connected to a connecting rail 24 by a further connecting device 3 and, if appropriate, a further rail adapter 23. The retaining rail 16 is connected to a cover 161. HAWA 23-01 PCT / 04.03.24 Fig. 4 shows the end piece 21E of the first rail section 21 of Fig. 3, which has a recess 210 for completely or partially receiving the rail adapter 23, the released rail adapter 23 and the end piece 22E of the second rail section 22 facing the rail adapter 23. It is shown that the two rail sections 21, 22 and the rail adapter 23 each have a front wall 21F, 22F, 23F, a head piece 21T, 22T, 23T, as well as an upper back piece 21R, 22R, 23R and a lower back piece 21S, 22S, 23S, which channel walls of the guide channels 212, 222, 232 and the stabilizing channels 213, 223, 233 form.Furthermore, it is shown (with regard to the first rail section 21, see also Fig. 8c) that the two rail sections 21, 22 and the rail adapter 23 each have a receiving channel 218, 228, 238 and a mounting channel 219, 229, 239. To connect the two rail sections 21, 22 to the rail adapter 23, a connecting rod 9 is inserted into the mounting channels 219, 229, 239. The mounting channels 219, 229, 239 preferably pass through the support bodies 211, 221, 231, which is why the support body 231 of the rail adapter 23 is held particularly stably by the connecting rod and can absorb the load acting via the support roller 51 without being deformed.The connecting rod 9 also ensures that the support bodies 211, 222, 231 of the first and second rail sections 21, 22 and the rail adapter 23 are coaxially aligned with one another and form the support track T1, and that the guide channels 212, 222, 232 of the first and second rail sections 21, 22 and the rail adapter 23 are coaxially aligned with one another and form the first guide track T21 or the first and second guide tracks T21, T22. The support track T1 and the guide tracks T21, T22 therefore run parallel to the rail axis x without steps or edges, even under the influence of the load. It is also possible for the guide channels 212, 222, 232 to guide the guide rollers 52 of the carriage 5 only on one side. It is also possible that the stabilization channels 213, 223, 233 guide the stabilization roller 53 only on one side.The internal cross-sections of the guide channels 212, 222, 232 and the stabilizing channels 213, 223, 233 therefore preferably have the same internal cross-section, either entirely or only partially. In preferred embodiments, the guide channels 212, 222, 232 and / or the stabilizing channels 213, 223, 233 have a U-profile or an L-profile. HAWA 23-01 PCT / 04.03.24 The receiving channels 218, 228, 238, into which a running rod 8 is inserted, are provided on the upper side of the support bodies 211, 221, 231 and are preferably open upwards. The running rod 8 is preferably rotationally symmetrical and preferably tapers on both sides towards the adjacent rail sections 21, 22, so that it has the largest diameter in the area of ​​the rail adapter 23. For example, the running rod 8 is cylindrical in the middle and conical on both sides.Preferably, the guide rod 8 can emerge upwards from the receiving channels 218, 228, 238 or at least from the receiving channel 238 of the rail adapter 23 and thus interact with the support roller 51 of the carriage 5. The support roller 51 therefore preferably already moves onto the guide rod 8 within the end piece 21E of the first rail section 21 and only leaves the guide rod 8 after reaching the second rail section 22. Preferably, the support roller 51 has a circumferential annular groove 510 approximately in the middle, into which the guide rod 8 can enter. The support roller 51 is thus securely supported in the transition region and additionally guided laterally. The guide rod 8 can also form part of the support track T1 in another way and connect flush or almost flush with the upper side of the support body 231 and absorb the load of the support roller 51.In this embodiment, the guide rod 8 preferably has a rectangular cross-section in the region of the receiving channel 238, so that a support roller 51, which does not have an annular groove 51, is optimally supported. The end piece 21E of the first rail section 21 has a recess 210 into which the rail adapter 23 can be inserted. In the region of the guide channel 232, the rail adapter 23 has a guide wing 2321 on one side or a guide wing 2321, 2322 on each side. In the region of the stabilization channel 233, the rail adapter 23 has a stabilization wing 2331 on one side or a stabilization wing 2331, 2332 on each side. The guide wing 2321 or the guide wings 2321, 2322, which are triangular in this embodiment, form extensions of the guide channel 232 of the rail adapter 23 and at the same time parts of the guide channel 212 within the first rail section 21.The stabilizing wing 2331 or the stabilizing wings 2331, 2332, which are triangular in this embodiment, form extensions of the stabilizing channel 233 of the rail adapter 23 and at the same time parts of the stabilizing channel HAWA 23-01 PCT / 04.03.24 213 within the first rail section 21, as shown in Fig. 10a and Fig. 10b. Fig. 5a shows the rail device 2 of Fig. 3 with the second rail section 22 in a sectional view and with the guide carriage 5 inserted. Fig. 5b shows the rail device 2 of Fig. 3 with the second rail section 22 detached from the rail adapter 23. Fig. 5c shows the rail device 2 of Fig. 3 with the released rail adapter 23, from which the first rail section 21 and the second rail section 22 are detached. Fig. 6a shows the rail device 2 of Fig. 4 with the end piece 21E of the first rail section 21 detached from the rail adapter 23. Fig.6b shows the rail device 2 of Fig. 6a with the rail sections 21, 22 connected to one another at a predetermined distance by the rail adapter 23 and a connecting device 3. It is clear that manufacturing tolerances can be easily compensated for by means of the rail adapter 23. Furthermore, it is clear that the recessed rail adapter 23 can be made visually striking by appropriate coloring. Fig. 7a shows the rail adapter 23 of Fig. 5 with a connecting device 3 and a connecting rod 9, by means of which the two rail sections 21, 22 can be connected to one another, and with a running rod 8, which is provided for engagement in the two rail sections 21, 22 and over which the support roller 51 of the guide carriage 5 of Fig. 5a can roll. The connecting rod 9 inserted into the support body 231 is also shown.It can be seen that the guide wings 2321, 2322 delimit the guide channel 232, and the stabilizing wings 2331, 2332 delimit the stabilizing channel 233 and extend it in one direction. If recesses 210 are provided in the end pieces 21E, 22E in both rail sections 21, 22, the rail adapter 23 is preferably designed symmetrically, with guide wings 2321, 2322 and stabilizing wings 2331, 2332 pointing in opposite directions. Fig. 7b shows the rail adapter 23 of Fig. 5 without the connecting device 3, the connecting rod 9, and the running rod 8. HAWA 23-01 PCT / 04.03.24 This base body of the rail adapter 23 can advantageously be manufactured as a die-cast part from a plastic compound. Fig. 7c shows the rail adapter 23 of Fig.7b in a further preferred embodiment with a recoil spring 235 provided on the front wall 23F, which engages in the recess 210 in the facing end piece 21E of the first rail section 21 and rests within the recess 210 against the front wall 21F of the first rail section 21 and exerts a recoil force on the rail adapter 23 and presses it against the end face of the second rail section 22. After the rail adapter 23 has been inserted into the recess 210 and the two rail sections 21, 22 are moved against each other, the rail adapter 23 therefore always rests flush against the end face of the second rail section 22. The rail adapter 23 is therefore preferably provided or connected in one piece with at least one adapter part, which serves to connect the rail adapter 23 to the second rail adapter 22 in a form-fitting and / or force-fitting manner.At least one adapter part can be provided that pushes the rail adapter 23 against the second rail section 22 or pulls it against the second rail section 22. The end piece 22E of the second rail section 22 can, for example, be form-fittingly connected to the rail adapter 23 and, for this purpose, can be provided, for example, with recesses into which an adapter part engages. Fig. 7d shows the rail adapter 23 from Fig. 7c inserted between the end pieces 21E, 22E of the first and second rail sections 21, 22. The rail adapter 23 is held by the adapter part or the recoil spring 235 on the front side of the end piece 22E of the second rail section 22, so that the connecting device 3 can be fixed by tightening the screw 32 without first accessing the rail adapter 23. Fig. 8a shows the back of the rail adapter 23 from Fig.6a, which is partially inserted into the recess 210 in the facing end piece 21E of the first rail section 21. Fig. 8b shows the rail adapter 23 of Fig. 8a, which is fully inserted into the recess 210 in the facing end piece 21E of the first rail section 21. HAWA 23-01 PCT / 04.03.24 Fig. 8a and Fig. 8b therefore illustrate the process of adjusting the rail adapter 23, which is displaced into the recess 210 in the end piece 21E as needed. Due to the shape of the guide wings 2321, 2322 and the stabilizing wings 2331, 2332, it is ensured that the guide rollers 52 and the stabilizing roller 53 are always safely guided on one side or both sides within the guide channel 212 of the first rail section 21 and the guide channel 232 of the rail adapter 23 as well as within the stabilizing channel 213 of the first rail section 21 and the stabilizing channel 233 of the rail adapter 23.In the transition area, the guide rollers 52 and the stabilizing roller 53 are guided by both the first rail section 21 and the rail adapter 23. Fig. 8c shows the first rail section 21 of Fig. 8a with the end piece 21E, into which the recess 210 is machined, which comprises various receiving parts. The head part 21T contains the recess part 2123T, into which the head part 23T of the rail adapter 23 can enter. Adjacent to the recess part 2123T in the head part 21T, recess parts 212321, 212322 are cut out in the front wall 21F and in the upper back piece 21R, into which the guide wings 2321, 2322 of the rail adapter 23 can enter. In the support body 211, the recess part 21231 is cut out, into which the support body 231 of the rail adapter 23 can enter.Adjacent to the recessed portion 21231 in the support body 211, recessed portions 212331, 212332 are provided in the front wall 21F and the lower back piece 21S, into which the stabilizing wings 2321, 2322 of the rail adapter 23 can enter. Furthermore, a recess 2123F is inserted into the front wall 21F, into which the front wall 23F of the rail adapter 23 can enter. Fig. 9a shows the rail adapter 23 and the first rail section 21 of Fig. 8a from above. Fig. 9b shows the rail adapter 23 and the first rail section 21 of Fig. 8b from above. HAWA 23-01 PCT / 04.03.24 Fig. 9c shows the first rail section 21 of Fig. 8c with the end piece 21E, into which the recess 210 is machined, from a viewpoint showing the recess parts 212321, 212322. Fig. 10a shows the rail device 2 in a sectional view along the section line A-A of Fig.6b with a view of the rear side of the front wall 21F, 22F, 23F of the first and second rail sections 21, 22 and the rail adapter 23. Fig. 10b shows the rail device 2 in a sectional view along the section line A - A of Fig. 6b with a view of the rear side of the upper back piece 21R, 22R, 23R and the lower back piece 21S, 22S, 23S of the two rail sections 21, 22 and the rail adapter 23. Also shown are the support track T1, the guide tracks T21, T22 and the stabilizing tracks T31, T32, which extend continuously and steplessly through the rail device 2, regardless of the set mutual distance between the two rail sections 21, 22. HAWA 23-01 PCT / 04.03.24 List of reference symbols: 1 functional unit, piece of furniture, in particular cupboard 1A side walls 1B top panel 1C bottom panel 1D partition wall 10 first or second door compartment 10 or.Parking space 100 Interior of the functional unit 1 11 Folding door 111 First door element 112 Second door element 11' One-piece door 12 Mounting profile 13 Stop hinges 14 Door hinges 15 Supporting carriage 151 Support rollers 152 Guide rollers 154 Running gear body 16 Support rail 161 Cover 17 Mounting part, hinge cup 19 Sliding device 2 Rail device 21 First rail section 210 Recess 2123B Recess part in the foot piece 2123F Recess part in the front wall 2123T Recess part in the head piece 212321, 212322 Recess parts in the guide channel 212 212331, 212332 Recess parts in the stabilizing channel 213 21B Foot piece 21E End piece of the first rail section 21 21F front wall 21R upper back piece 21S lower back piece 21T head piece 211 support body 212 guide channel 213 stabilizing channel HAWA 23-01 PCT / 04.03.24 217 Mounting channel 218 Receptacle channel 219 Mounting channel 22 Second rail section 22B Foot piece 22E End piece of the second rail section 22 22F Front wall 22R Upper back piece 22S Lower back piece 22T Head piece 221 Support body 222 Guide channel 223 Stabilization channel 226 Installation plate 227 Installation channel 228 Receptacle channel 229 Mounting channel 23 Adjustable rail adapter 23B Foot piece 23F Front wall 23R Upper back piece 23S Lower back piece 23T Head piece 231 Support body 232 Guide channel 2321 First guide wing 2322 Second guide wing 233 Stabilization channel 2331 First stabilization wing 2332 Second stabilization wing 235 Recoil spring 237 Installation channel 238 Receptacle channel 239 Mounting channel 24 End rail 3 Connecting device 31 Connecting plate 32 Locking screws 5 Guide roller 51 Support roller HAWA 23-01 PCT / 04.03.24 510 Annular groove 52 Guide rollers 53 Stabilizing roller 54 Running gear body 55 Coupling device 8 Running rod 9 Connecting rod T1 Support track T21, T22 Guide tracks T31, T32 Stabilizing tracks x Track axis HAWA 23-01 PCT / 04.03.24.

Claims

1. Rail device (2) with a rail axis (x) along which a carriage (5) can be guided, which carriage has a support roller (51) and two guide rollers (52), comprising a first rail section (21) with a first support body (211) and a first guide channel (212), a second rail section (22) with a second support body (221) and a second guide channel (222), and a connecting device (3) by means of which mutually facing end pieces (21E, 22E) of the two rail sections (21, 22) are connected to one another, characterized in that the rail device (2) comprises a rail adapter (23) by means of which the first rail section (21) and the second rail section (22) can be connected to one another at a selectable mutual distance, in that the rail adapter (23) has a third support body (231) and a third guide channel (212),that the end piece (21E) of the first rail section (21) has a recess (210) into which the rail adapter (23) is fully or partially inserted, that the first, second, and third support bodies (211, 222, 231) are coaxially aligned with one another and form a support track (T1) that serves to support the support roller (51), and that the first, second, and third guide channels (212, 222, 232) are coaxially aligned with one another and have a fully or partially identical internal cross-section and form a first guide track (T21) or a first and a second guide track (T21, T22) that serve to guide the guide rollers (52). HAWA 23-01 PCT / 04.03.24, 2. Rail device (2) according to claim 1, characterized in that the first rail section (21) comprises a first front wall (21F) on which the first support body (211) is provided, and a first head piece (21T) in which the first guide channel (212) is provided; that the second rail section (22) comprises a second front wall (22F) on which the second support body (221) is provided, and a second head piece (22T) in which the second guide channel (222) is provided; and that the rail adapter (23) comprises a third front wall (23F) on which the third support body (231) is provided, and a third head piece (23T) in which the third guide channel (232) is provided.Rail device (2) according to claim 1 or 2, characterized in that the rail device (2) is suitable for guiding a carriage (5) having a support roller (51), two guide rollers (52), and a stabilizing roller (53), and in that the first rail section (21) has a first stabilizing channel (213), the second rail section (22) has a second stabilizing channel (223), and the rail adapter (23) has a third stabilizing channel (233), which stabilizing channels (213, 223, 233) are aligned coaxially with one another and have a completely or partially identical internal cross-section and form a first stabilizing track (T31) or a first and a second stabilizing track (T31, T32) which serve to guide the stabilizing rollers (53). 4.Rail device (2) according to claim 3, characterized in that the first stabilizing channel (213) is provided in the first support body (211), that the second stabilizing channel (223) is provided in the second support body (221), and that the third stabilizing channel (233) is provided in the third support body (231).

5. Rail device (2) according to one of claims 1 - 4, characterized in that the rail adapter (23) is designed to be completely or partially complementary in its dimensions to the recess (210) in the end piece (21E) of the first rail section (21), or HAWA 23-01 PCT / 04.03.

24. that the rail adapter (23) is designed in its dimensions to be completely or partially complementary to the recess (210) in the end piece (21E) of the first rail section (21), and that the rail adapter (23) inserted into the end piece (21E) of the first rail section (21) protrudes from the end piece (21E) of the first rail section (21) or is completely received therein. 6.Rail device (2) according to one of claims 1-5, characterized in that the first rail section (21) in the first guide channel (212) has a first recess part (212321) into which a complementary and outwardly tapering guide wing (2321) of the third guide channel (232) of the rail adapter (23) projects, or in that the first rail section (21) in the first guide channel (212) has, on opposite sides, a first and a second recess part (212321, 212322) into which complementary and outwardly tapering guide wings (2321, 2322) of the third guide channel (232) of the rail adapter (23) project.Rail device (2) according to one of claims 2 - 6, characterized in that the first rail section (21) in the first stabilization channel (213) has a third recess part (212331) into which a complementary and outwardly tapering stabilization wing (2331) of the third stabilization channel (233) of the rail adapter (23) projects, or in that the first rail section (21) in the first stabilization channel (213) has, on opposite sides, a third and fourth recess part (212331, 212332) into which complementary and outwardly tapering stabilization wings (2321, 2322) of the third stabilization channel (233) of the rail adapter (23) project.

8. Rail device (2) according to claim 6 or 7, characterized in that the guide wings (2321, 2322) each have two flanks inclined towards one another, or HAWA 23-01 PCT / 04.03.

24. that the stabilizing wings (2321, 2322) each have two mutually inclined flanks, or that the guide wings (2321, 2322) and the stabilizing wings (2321, 2322) each have two mutually inclined flanks.

9. Rail device (2) according to one of claims 1-8, characterized in that the support bodies (211, 222, 231) of the first and second rail sections (21, 22) and of the rail adapter (23) have a receiving channel (218, 228, 238) into which a guide rod (8) is inserted, which projects beyond the third support body (231) of the rail adapter (23) and preferably tapers on one or both sides or which adjoins the upper side of the third support body (231). 10.Rail device (2) according to one of claims 1-9, characterized in that the first and second rail sections (21, 22) and the rail adapter (23) each have at least one mounting channel (219, 229, 239), into which mounting channels (219, 229, 239), which are aligned coaxially with one another, a connecting rod (9) is inserted, or in that the support bodies (211, 222, 231) of the first and second rail sections (21, 22) and of the rail adapter (23) each have at least one mounting channel (219, 229, 239), into which mounting channels (219, 229, 239), which are aligned coaxially with one another, a connecting rod (9) is inserted.Rail device (2) according to one of claims 1 - 10, characterized in that the head pieces (21T, 22T, 23T) of the first and second rail sections (21, 22) and of the rail adapter (23) each have an installation channel (217, 227, 237), which installation channels (217, 227, 237) are aligned coaxially with one another, that the connecting device (3) has a connecting plate (31) and locking screws (32) rotatably held in the connecting plate (31), and that the connecting plate (31) is held axially displaceably in the installation channels (217, 227, 237) and is fixed by means of the locking screws (32).

12. Rail device (2) according to one of claims 1 - 11, characterized in that the first and second rail sections (21, HAWA 23-01 PCT / 04.03.

24. 22) each run straight or at least partially along a curve, or that the first rail section (21) runs straight and the second rail section (22) runs at least partially along a curve.

13. Rail device (2) according to one of claims 1-12, characterized in that the mutually facing end pieces (21E, 22E) of the first and second rail sections (21, 22) have the same structure and the rail adapter (23) is adapted to both end pieces (21E, 22E), or that the end piece (22E) of the second rail section (21, 22) and the rail adapter (23) lie against one another in a plane at their ends.Rail device (2) according to one of claims 1-13, characterized in that the first and second rail sections (21, 22) are made of metal and the rail adapter (23) is made of metal or plastic, or the first and second rail sections (21, 22) are made of metal and the rail adapter (23) is made of metal or plastic and is provided with a paint.

15. Functional unit (1) with a rail device (2) according to one of claims 1-14. HAWA 23-01 PCT / 04.03.24.

Images