Dismantlable system for constructing partition walls and method

Abstract

The invention relates to a dismantlable system (10) for constructing partition walls, shaft walls or facing shells, in particular in the interior of a building, comprising plaster-based cladding boards (12) and frame assembly units (16) for holding the cladding boards (12). The cladding boards (12) each have a groove profile (20), at least on a first edge, so as to be releasably interconnected to form a board formation, preferably joint-free on the front face. The frame assembly units (16) comprise systems of supports (34) and carriers (36), a support (34) connecting at least two mutually opposite carriers (36) in each case. The cladding boards (12) each have first connecting elements (22) on a rear face, in particular at the level of the groove profile (20), and the frame assembly units (16) have, preferably on their supports (34), second connecting elements (24) to releasably interconnect the cladding boards (12) and the frame assembly units (16). Further aspects relate to a method and to a plaster-based cladding board (12) for use in the system (10).

Description

[0001]

[0002] The invention relates to a dismantlable system for constructing partition walls, shaft walls or facing shells, in particular in the interior of a building, and to a method for this purpose. A further aspect relates to a plaster-based cladding board, in particular for use in a system of this type.

[0003] PRIOR ART

[0004] For constructing partition walls, shaft walls or facing shells in the interior of a building, plasterbased cladding boards, such as plasterboards, drywall boards or gypsum fibreboards, are generally used. Plasterboards are particularly widespread in a size of 625 x 2000 mm or 1250 x 2000 mm with wall thicknesses of 12.5 mm, for example. Plaster-based cladding boards make it possible to create partition walls, shaft walls or facing shells in lightweight construction. Products of 600 mm width are also widespread. In the following, to simplify the description of the invention, reference is often only made to partition walls, but it should always be understood that these statements also apply to shaft walls or facing shells unless stated otherwise.

[0005] It is known to use special studs of II, C, M or Q profile cross sections having a central web and flange portions protruding therefrom, so as to fasten the plaster-based cladding boards thereto. Studs of this type are standardised, for example in DIN 18182-1 :2015-11 , with flange widths of 50 or 35 mm.

[0006] The cladding boards are fastened to the flanges of the studs. Conventionally, the studs are arranged at a distance from one another such that, if the cladding boards are arranged vertically, the narrow cladding boards (of the 625 mm width conventional in Germany) are fastened abutting the flanges, and the joints are filled. For wide cladding boards (of the 1250 mm width conventional in Germany), a centrally arranged stud, to which the cladding board is additionally fastened, is conventionally added for reasons of statics. At its boundary, two cladding boards are fastened to a stud in each case. The cladding boards are connected, as close as possible to their edges, to the flange of the stud. Usually, screws, nails, brackets or adhesives are used as fastening means. For various reasons, including fire protection properties, vertical arrangement of the cladding board is the standard arrangement.

[0007] In exceptional cases or if there are very low requirements, a horizontal arrangement of the cladding boards in the formation may be considered. As a result of the cladding boards being offset in rows, they are fastened at two or three points, specifically in each case at the boundary with a following board and once in the centre.

[0008] EP 2 295662 A2 discloses a system for manufacturing a partition wall, which comprises at least one stud having a web and flanges arranged thereon as well as drywall boards as partition wall elements. Therein, to improve the sound insulation properties of the partition wall, it is proposed to provide both the boundary edge and the position of the fastening means as far away as possible on the flange end and to extend the flange width from DIN standard DIN 18182-1 :2015- 11 to a range of 55 to 90 mm. In the known systems, when the partition wall is dismantled, the fastening means and filled joints result in the board edge being torn out. Boards of this type are recyclable but are no longer reusable.

[0009] OBJECT OF THE INVENTION

[0010] There is a need for improved systems for constructing partition walls, shaft walls or facing shells having improved properties in the region of the sound insulation, which are also formed to be dismantlable and reusable.

[0011] DISCLOSURE OF THE INVENTION

[0012] The object is achieved by a dismantlable system for constructing partition walls, shaft walls or facing shells and by a method having the features of the independent claims.

[0013] Advantageous embodiments of the invention will be apparent from the dependent claims.

[0014] In a dismantlable system for constructing partition walls, shaft walls or facing shells, plasterbased cladding boards and frame assembly units for holding the cladding boards are provided, the cladding boards each having a groove profile, at least on a first edge, so as to be releasably interconnected to form a board formation, and the frame assembly units comprising systems of supports and carriers, a support connecting two mutually opposite carriers in each case, and the cladding boards each having at least one first connecting element on a rear face.

[0015] In one embodiment, the frame assembly units each have at least one second connecting element suitable for cooperating with the at least one first connecting element of the cladding boards to releasably interconnect the cladding boards and the frame assembly units.

[0016] Alternatively or in addition, one embodiment provides that the at least one first connecting element cooperates with the supports and / or carriers to releasably interconnect the cladding boards and the frame assembly units. Advantageously, because of the use of the groove profile, no joint filling using a joint filling material is required. By virtue of the releasable connection between the cladding boards via the groove profile and the further releasable connection of the cladding boards to the frame assembly units, the system is configured to be dismantlable. The cladding boards can be separated from one another again without damage, and are thus reusable.

[0017] In the following, “dismantlable” means that the individual components can be released or separated from one another without significant damage such as tearing of edges or the like.

[0018] The invention thus provides, in particular, a reusable partition wall system, reusable facing shell or reusable shaft wall.

[0019] The system is particularly suitable for constructing partition walls, shaft walls or facing shells, in particular in the interior of a building, but this is not limiting for the invention. In particular, the system is advantageous for manufacturing non-supporting partition walls in the interior of a building, for example for delimiting office units. Being dismantlable also makes it possible, for example, to construct a partition wall on a trial basis and subsequently to move it again.

[0020] However, by means of the invention, outdoor areas, such as pergola walls, building site boundary walls, walls below free steel girders or the like, may equally well be configured with the dismantlable system.

[0021] Preferably, the cladding boards can be releasably connected at the front face by means of the groove profile, without joints, to form a board formation. For this purpose, in an advantageous embodiment, it may be provided that the groove profiles are configured in such a way that the groove shoulders delimiting grooves on the front face of the cladding boards protrude further than the groove shoulders delimiting grooves on the rear face of the cladding boards. Forming groove shoulders of unequal length ensures in particular that the production tolerances occur on the rear face of the cladding boards. The front faces can then be put together without joints.

[0022] However, the invention is not limited to this embodiment. Equally, visible joints may be left on the front face, between which for example a tongue element remains visible. The cladding boards and the frame assembly units are interconnected by means of the at least one first and at least one second connecting element, the at least one first connecting element being provided on the cladding boards and the at least one second connecting element being provided on the frame assembly units. In an advantageous embodiment, the at least one first connecting element is arranged at the level of the groove profile, and extends substantially along the groove. In this case, preferably but without limitation to the invention, the at least one second connecting element is provided on the supports in such a way that it likewise extends along the groove when the frame assembly elements are arranged accordingly with respect to the cladding boards.

[0023] In an alternative embodiment, the cladding boards are provided, on the rear face, substantially perpendicular to the groove profile along their edges, with at least one first connecting element, which cooperates with at least one second connecting element, which may, preferably but without limitation to the invention, be provided on the carriers.

[0024] A combination of the described position of the connecting elements on the cladding boards and on the frame assembly units may of course likewise be provided.

[0025] It is possible for the cladding boards to have further connecting elements on the rear face, for example once in a strip shape in the centre, or in addition or alternatively in a strip shape at equidistant intervals. The further connecting elements may extend parallel and / or perpendicular to the first edge with the groove profile. This embodiment is suitable in particular for heavy plaster-based cladding boards which are to be held by means of a plurality of frame assembly units, for example particularly hard boards.

[0026] In an advantageous embodiment, the system comprises connecting bars which correspond to the groove profile, in such a way that the connecting bars can be releasably inserted into the groove profiles as external tongues. Connecting bars are preferably produced using plastics material, for example PE, HDPE, PET or PVA. Alternatively or in addition, metal connecting bars, for example aluminium profiles or sheet metal profiles, may be provided. In an advantageous, particularly simple embodiment, the connecting bars may have a simple I profile, which may advantageously be manufactured particularly cost-effectively as an extruded component. A particular advantage of the system having external tongues is that they can relatively reliably be inserted into the grooves without damage. Advantageously, the system having the connecting bars comprises at least two plaster-based cladding boards, each having at least one first edge with a groove profile, the connecting bar being insertable into the grooves of both groove profiles in an exact fit to interconnect the cladding boards. On the edge opposite the groove profile, the cladding boards preferably also have a groove profile, formed similarly to the groove profile on the first edge.

[0027] Alternatively or in addition, it may be provided that the cladding boards each comprise, at least on the edge opposite the groove profile, a tongue profile which corresponds to the groove profile. In this case, the system preferably comprises at least two plaster-based cladding boards, each having a tongue-and-groove profile, the tongue of one cladding board being insertable into the groove of the second cladding board in an exact fit.

[0028] Both described systems, in other words with connecting bars or with a tongue profile in the cladding board, as well as mixed forms of these systems, can be extended as desired in at least one spatial direction. The plaster-based cladding boards may for example be configured roomheight, in such a way that they can only be connected to the floor and ceiling below and above.

[0029] In one embodiment of the invention, the cladding boards each have a peripheral groove profile. In this case, as described above, the system comprises connecting bars, preferably plastics- based, which correspond to the groove profile, in such a way that the connecting bars can be releasably inserted into the groove profile. The connecting bars are provided for connection at the boundary of the cladding boards in each case. The system is formed to be dimensionable as large as desired in two spatial directions.

[0030] In a further embodiment, a peripheral tongue-and-groove profile may be provided at the cladding boards. In this case, two edges having the grooves are arranged mutually adjacent, “adjacent” meaning that they meet at a corner of the board. Further, two tongues are arranged mutually adjacent, in such a way that they meet at a corner of the cladding board. This system can also be extended to any desired size in two spatial directions.

[0031] In an advantageous embodiment, the supports of the system comprise telescopic rails to position the carriers at a variable distance from one another. In this case, it is provided that the distance between the carriers is adjustable via fastening elements, preferably first clamp, clip or snap-in elements, which fix the telescopic rails with respect to one another. In this way, the system is formed to be adaptive to the room height. The distance between the carriers can preferably be set releasably, and this can be achieved in a particularly simple manner using a clamping bracket. Clips or snap-in elements have the advantage of increased stability, but often require tools for subsequent release. By manipulating the clamp, clip or snap-in elements, the distance between the carriers can advantageously be set by a single individual.

[0032] The telescopic rails may in particular be formed from sheet steel profiles which can be slid into one another. They may have a for example U-shaped cross section, one U-shaped cross section being formed slightly smaller than the second U-shaped cross section in such a way that they fit inside one another. Alternatively, of course, further profile shapes may be provided, in particular H profiles, but also C, M or Q profiles, and, in the embodiment as a telescopic rail of adjustable length, a first rail is formed with a slightly smaller profile cross section than the second rail in each case in such a way that they fit inside one another. In a known manner, the flange ends of the rails may be provided with headings and the like to increase the rigidity of the supports.

[0033] The frame units may be planked with the cladding boards on one or both sides. In the former case, the system of frame assembly unit and cladding board is suitable in particular as a facing shell. In the latter case, the system of frame assembly unit and cladding board is suitable in particular as a partition wall.

[0034] Further, it is also possible to plank the frame assembly units in two layers, in which case the two layers of cladding boards are preferably in turn interconnected using dismantlable connecting elements, described in greater detail in the following.

[0035] In one embodiment of the invention, the carriers have stop faces, which can be positioned perpendicular to the supports and by means of which the frame assembly units can be braced against floor or ceiling surfaces of a building. The carriers are preferably articulated to the supports via hinges so as to have at least one degree of freedom with respect to the supports. In an advantageous embodiment, the hinges are such that the carriers have exactly one degree of freedom with respect to the supports, namely an adjustment angle. In an advantageous embodiment, the carriers are articulated so as to be movable into at least two positions, a first position of the carrier with the stop faces substantially parallel to the supports constituting a transport position in which the frame assembly units take up a low volume. A second position is such that the carriers have stop faces extending perpendicular to the supports and can thus brace the frame assembly unit against floor or ceiling surfaces of the building.

[0036] The frame assembly units are preferably interconnectable to form a frame using second clamp, clip or snap-in elements. A frame of this type has the advantage that it consists of little material and can thus be manufactured very cost-effectively. In the context of the present invention, it is preferred for the frame assembly units to be releasably interconnectable. Clamp, clip or snap- in elements are preferred which can be released again manually or with a tool without permanent deformations or tearing of the carriers occurring. Advantageously, the system has few separate individual parts at this point. On the building site, a frame of this type can be constructed relatively rapidly using the advantageous telescopic rails and by clipping together the frame assembly units. Moreover, simple mounting of the cladding boards on a fully erected frame is possible very easily in just a few movements.

[0037] The frame assembly units may for example be formed from unalloyed steel, preferably with a zinc coating, to protect against corrosion. Frame assembly units of this type are particularly stable and sturdy for mounting the cladding boards.

[0038] In an advantageous embodiment of the invention, the groove profiles are configured in such a way that the groove shoulders delimiting grooves on the front face of the cladding boards protrude further than the groove shoulders delimiting grooves on the rear face of the cladding boards. This embodiment makes a board formation without joints on the front face possible.

[0039] In the context of the present disclosure, a joint means an opening of at least 2 mm width. Distances less than 2 mm width between the boards are referred to herein as hair joints or joint- free. A “visible joint” means a joint larger than a hair joint.

[0040] In a further advantageous embodiment of the invention, the groove profiles are configured in such a way that the groove shoulders delimiting grooves on the rear face of the cladding boards protrude further than the groove shoulders delimiting grooves on the front face of the cladding boards, and a tongue shoulder projects on the front face beyond a rear-face tongue shoulder, a joint-free board formation being formed on the front face while forming a rear-face joint. This special configuration of the grooves or of the tongue-and-groove profile facilitates inserting a second board into the already mounted first board.

[0041] Whilst in many applications a joint-free board formation is advantageous and desirable, in particular because of acoustic and thermal considerations, for other practical reasons it may be advantageous to create visible joints. Thus, for example, visible joints can absorb length changes in boards due to thermal and / or humidity expansion, without visually discernible tear formation occurring.

[0042] The grooves may be provided with insertion ramps and / or corner radii. The groove shoulders may be configured expediently for this purpose and for example have roundings, slants or chamfers and the like.

[0043] In systems where the cladding boards have tongues, these may likewise have slants, chamfers or roundings. Numerous embodiments are known to a person skilled in the art. As a particularly preferred embodiment of the tongue, it has a first parallel part, a subsequent oblique part and a rounded portion. In particular, the tongues of two adjacent side edges of a plasterboard may also be formed truncated or rounded in the contact region.

[0044] In the context of the present invention, the focus is on the system being dismantlable. To avoid breakage of the tongues and groove shoulders, it is preferred for the groove depth to be less than the board thickness. In this context, a groove depth of approximately 20 % to 80 %, preferably 30 to 50 %, of the board thickness can be implemented.

[0045] Particularly preferably, the groove may have a width of approximately 1 / 3 of the board thickness and be formed with particularly preferably equally thick groove shoulders on the front and rear faces.

[0046] On the rear face, there may be a joint of up to 2 mm or up to 3 mm between the groove shoulder and the edge of the cladding board. However, the invention is not limited to this.

[0047] Likewise, for breakage resistance, in systems where the cladding boards have tongues, it is preferred for the tongues to have a width of 20 to 80 %, preferably 30 to 50 %, of the board thickness. Dimensions of this type have been found to be sufficiently breakage-resistant in practice as regards the groove shoulders and tongues.

[0048] In an advantageous embodiment, the groove depth is formed with some play with respect to the tongue, in other words approximately up to 20 % deeper than the width of the tongue. It is thus also possible to provide between the groove and the tongue a dismantlable insulating material, preferably a non-adhesive insulating material, in particular in the form of sealing tapes or the like.

[0049] The front-face and / or rear-face edges of the cladding boards are preferably formed rounded and / or chamfered. In particular, the truncated or rounded edges of the cladding boards prevent damage during transport, storage and processing. The radius or chamfer is preferably formed with a width of up to 10 mm, more preferably up to 5 mm, even more preferably up to 3 mm, and even more preferably up to 2 mm. Relative to the board thickness, it is been found that a range of up to 20% can advantageously be implemented here.

[0050] The preferred embodiments of the connecting elements comprise releasable connections, in such a way that the system can be dismantled. In a preferred embodiment of the invention, two first and second connecting elements form a hook-and-loop fastener with one another. Alternatively or in addition, two first and second connecting elements or the first connecting elements and the stand or carrier may form a magnetic connector.

[0051] The hook-and-loop fasteners have been found to be particularly advantageous in terms of the measured acoustic properties. It is suspected that the hook-and-loop fastener acoustically decouples the system components from one another. The hook-and-loop fastener formation may be arranged as desired; for example, hook strips may be provided on the cladding boards and non-woven strips on the frame assembly units or vice versa. Because of its high strength, a mushroom-shaped connector is even more strongly preferred.

[0052] The described system may be present assembled or in individual parts as a kit.

[0053] The system may comprise further elements, in particular for example a dismantlable wallpaper which is arranged on the board formation, which is preferably joint-free on the front face. The dismantlable wallpaper is for example a removable glass fibre wallpaper. Wallpapers of this type are known to a person skilled in the art from the prior art.

[0054] In particular, in the case of frame assembly units planked on both sides , sound insulation boards formed for example of mineral wool or hard plastics material foams may be inserted between the cladding boards in a known manner, and these may alternatively or in addition be configured for thermal insulation. In this way, acoustic walls may advantageously be formed.

[0055] The plaster-based cladding boards are for example plasterboards, drywall boards or gypsum fibreboards. In particular, the invention is usable for plasterboards of a thickness of 12.5 mm, a width of 600, 625 or 1250 mm, and a length of 1 m, 2 m or 3 m.

[0056] In a further aspect of the invention, a method for constructing partition walls, shaft walls or facing shells using one of the described systems comprises at least a step of releasably interconnecting the cladding boards to the frame assembly units, in such a way that the cladding boards are preferably interlocked without joints on the front face to form a board formation.

[0057] In this context, two successive cladding boards are preferably connected to a single frame assembly unit and extend side by side. Depending on statics requirements and as needed, the cladding boards may in each case be connected centrally to further frame assembly units. In particular, ideally the cladding boards are connected without the use of an adhesive.

[0058] The features described above for the system are also to be understood as being disclosed for the method, and repeated description of the individual features is omitted.

[0059] In particular, the first and second connecting elements are connected using preferably a hook- and-loop fastener or a magnetic connector.

[0060] Preferably, in the method, a dismantlable wallpaper is fastened to the board formation, which is preferably joint-free on the front face. The board formation may already be formed joint-free on the front face by simply putting together the cladding boards to form the board formation with corresponding dimensioning of the tongues and grooves or connecting bars. A further aspect of the invention relates to a partition wall, shaft wall or facing shell manufactured by carrying out the method.

[0061] Another further aspect of the invention relates to a plaster-based cladding board having, at least on a first edge, a groove profile for use in one of the above-described systems. The groove profile may be manufactured by any desired method, for example by moulding, milling or sawing.

[0062] In the following, the embodiments of the invention are described in greater detail by way of drawings, in which:

[0063] BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In the following:

[0065] Fig. 1 is a sectional view of a detail of a partition wall from above,

[0066] Fig. 2 is a further sectional view of a partition wall from above,

[0067] Fig. 3a shows a frame assembly unit having second connecting elements according to a first embodiment,

[0068] Fig. 3b shows a frame assembly unit having second connecting elements according to a second embodiment,

[0069] Fig. 4a shows a cladding board having first connecting elements according to a first embodiment for vertical standard mounting,

[0070] Fig. 4b shows a cladding board having first connecting elements according to a further embodiment for horizontal mounting,

[0071] Fig. 4c shows a cladding board having first connecting elements according to another further embodiment, Fig. 4d shows a cladding board having first connecting elements according to another further embodiment,

[0072] Fig. 5a is a sectional view through a boundary region of two cladding boards having a tongue- and-groove profile according to one embodiment,

[0073] Fig. 5b is a sectional view through a boundary region of two cladding boards having an external tongue according to one embodiment, and

[0074] Fig. 6 is a graph illustrating the evaluated sound reduction index of partition walls according to the invention and in a control system.

[0075] EMBODIMENTS OF THE INVENTION

[0076] In the following description, like reference numerals are used for like and functionally equivalent parts. A repeated description of like or functionally equivalent parts is not necessarily provided. For ease of understanding, the subject matter is not necessarily shown to scale in the drawings.

[0077] The terms “above”, “below”, “horizontal”, “vertical” and the like are understood in accordance with the position of the floor and ceiling of a building, as in conventional house construction.

[0078] Fig. 1 is a section through a sub-region of a partition wall as one possible embodiment of the invention during use of the system 10 according to the invention, showing a connection region of each of three cladding boards 12 to two frame assembly units 16 planked on both sides.

[0079] In the boundary region 32, the cladding boards 12 each have a groove profile 20, a tongue 14, here an external tongue 14 in the form of a connecting bar 18, being inserted into the associated groove 46 of the adjoining cladding boards 12 to interconnect the cladding boards 12.

[0080] The frame assembly unit 16 comprises a web 26, at the ends of which two flanges 28 protrude substantially perpendicular to the web 26. The flanges 28 are each provided with a beading 30 to give the frame assembly unit 16 further stability. Bead structures or the like may also be provided (not shown) in the region of the web 26 for reinforcement.

[0081] The cladding boards 12 are each provided with a first connecting element 22, for example with a hook strip for forming a hook-and-loop fastener. The second physical component for forming the hook-and-loop fastener, such as a non-woven strip, is formed by the second connecting element 24, which is fastened to the flange 28 on the frame assembly unit 16.

[0082] Whilst in the embodiment shown the second connecting element 24 is fastened to the flange 28 close to the web, in further embodiments (not shown) the second connecting element 24 may be fastened to the flange 28 centrally or away from the web, in other words on the end face of the flange 28.

[0083] To simplify mounting, the first connecting elements 22 are arranged in the system in such a way that in each case only at least one connecting element 22 is arranged on only one cladding board 12 in the boundary region 32. A second cladding board 12, to be attached subsequently, is mounted with rotating insertion during mounting on the first cladding board 12, previously fastened to the second connecting element 24 using the at least one connecting element 22, and is fixed to the connecting element 24 of the next frame assembly unit 16 using the at least one connecting element 22. In the case of tongue-and-groove cladding boards, the at least one first connecting element 22 is preferably arranged on the groove edge parallel to the tongue 14 (see Fig. 4a, 4b, 4d).

[0084] The system 10 shown is formed dismantlable by virtue of the releasable interconnection of the first and second connecting elements 22, 24. The groove profile 20 of the associated cladding board 12 also contributes to this, since the cladding boards 12 are releasable from one another as a result of the simple interlocking of the groove 46 and tongue 14.

[0085] In the boundary region 32, the cladding boards 12 are here formed without joints by way of example, without limitation to the invention. Whilst in the embodiment shown the boundary region 32 is arranged centrally on the flange 28, in further embodiments (not shown) the boundary region 32 may be positioned on the flange 28 close to or away from the web, in other words on the end face of the flange 28. The intermediate region between the cladding boards 12 shown at the top of Fig. 1 and the cladding boards 12 shown below may expediently, in a known manner, be filled in with sound insulation boards or thermal insulation elements.

[0086] Fig. 2 is a section through a partition wall between two walls 11 as a possible embodiment of the invention during use of the dismantlable system 10 according to the invention.

[0087] The setup of the system 10 starts with a wall attachment profile 17, here to the right of the picture, which is fastened to a wall 11. The further frame assembly units 16 are attached thereto at the grid dimension. A wall attachment board 13 is cut to size and attached to the wall 11 using a sealing tape 15 (compriband). The wall attachment board 13 is connected to the wall attachment profile 17 by means of at least one first connecting means 22 along with at least one second connecting means 24 arranged on the wall attachment profile 17. The wall attachment board 13 is subsequently connected to a first frame element 16 using at least one further first connecting means 22. Subsequently, the further cladding boards 12 and frame elements 16 are mounted as described previously. For the second wall attachment, here to the left of the picture, a second wall attachment board 13, cut to size, is mounted on a further wall attachment profile 17, connected at a variable distance from the last frame element 16 and having at least one first connecting means 22, and is mounted on the last cladding board 12 analogously to the cladding boards 12 fastened at the grid dimension. In this case too, a sealing tape 15 is used for the lip.

[0088] Fig. 3a and 3b show different embodiments of frame assembly units 16, each having a support 34 formed from two telescopic rails 38 displaceable into one another. The telescopic rails 38 can be locked with respect to one another using a fastening element 42, in such a way that carriers 36 articulated to the support 34 can be locked at an adjustably variable distance from one another.

[0089] In the embodiment shown, the two carriers 36 are each fixed, positioned at the ends, to the support 34 by means of a hinge 40.

[0090] The carriers 36 are formed, by way of example and without limitation to the invention, as II profiles, which can be tilted around the hinge 40 in such a way that they can be orientated substantially parallel to the support 34 in a transport position (not shown). In the installation position shown in Fig. 3a and Fig. 3b, the carriers 36 form stop faces 44 which can press against a floor or ceiling of a building.

[0091] As a result of the clamp, clip or snap-in element, rudimentarily represented in the drawings by the fastening element 42, the frame assembly unit 16 can very easily be set up manually by a single individual.

[0092] In the embodiment shown in Fig. 3a, the frame assembly unit 16, if prefabricated, preferably has two, for attachment only to the front face, or four, for attachment to the front and rear faces, connecting elements 24, which are arranged on the two telescopic rails 38. This corresponds to what is illustrated in Fig. 1. This embodiment also corresponds to the embodiments shown in Fig. 4a, 4b and 4d of the cladding boards 12, along with the arrangement shown therein of the first connecting elements 22 substantially along the groove profile 20 of the first edge of the cladding board 12.

[0093] It is also possible, in the context of prefabrication, to omit the attachment of the at least one second connecting element 24 and only to attach it to the frame assembly unit after mounting in the installation situation. In this case, preferably one, for attachment only to the front face, or two, for attachment to the front and rear faces, connecting elements 24 are arranged on the supports 34.

[0094] Fig. 3b shows an alternative embodiment in which the second connecting elements 24 are arranged on the carriers 36. This embodiment is compatible in particular with the embodiment shown in Fig. 4c of the cladding board 12, which comprises horizontally extending first connecting elements 22.

[0095] The embodiments shown in Fig. 3a and Fig. 3b each have advantages and drawbacks. Whilst the functionality of the telescopic rails could be limited in adjustability by the second connecting elements 24 in particular for the prefabrication in Fig. 3a, the embodiment shown in Fig. 3b requires cladding boards 12 formed substantially as high as the frame assembly unit 16, since the cladding boards 12 are merely held in place at the upper and lower faces.

[0096] Of course, it is possible for the above-described embodiments to be combined with one another differently from what is shown in Fig. 3a and 3b or 4a, 4b, 4c and 4d. In further embodiments (not shown), the frame assembly units 16 shown in Fig. 3a and Fig. 3b may deviate considerably in dimensions from the drawings. In particular, the carriers 36 may be formed as large as or even larger than the supports 34 in size, where expedient and depending on statics requirements. In order to ensure that a carrier 36 is present at the boundary of the cladding board 12, the dimension of the carrier 36 is preferably adapted to the width of the cladding board 12. The latter is particularly relevant with regards to the embodiment shown in Fig. 3a.

[0097] Fig. 4a shows a cladding board 12 according to a first embodiment of the invention, having a peripheral tongue-and-groove profile for vertical standard mounting. The peripheral tongue-and- groove profile comprises two grooves 46, which meet at a corner. The tongue-and-groove profile further comprises two tongues 48, which likewise meet at two at a corner. In each case, the first connecting element 22 is arranged along one of the grooves 46 substantially over the entire height of the cladding board 12 in each case. The first connecting element 22 is by way of example a hook strip for forming a hook-and-loop fastener.

[0098] Fig. 4b shows a cladding board 12 according to a further embodiment of the invention, having a peripheral tongue-and-groove profile for unconventional horizontal mounting. It can clearly be seen that, by comparison with the configuration in Fig. 4a, the first connecting element is arranged rotated through 90° on a short edge. For bracing and connection to a further frame assembly unit 16, a further first connecting element 22 is provided centrally.

[0099] In the embodiment of Fig. 4c, two first connecting elements 22 are provided in the corner regions of the groove edge, and two further connecting elements 22 of the cladding board 12, which are set apart from the corner regions of the tongue edge, are provided. These extend substantially horizontally in the embodiment shown, and not vertically as in Fig. 4a. Here, the tongue-and- groove profile merely comprises a groove 46 on the long edge and a tongue 48 on the opposite long edge. Tongue-and-groove profiles of this type may also be provided in the embodiments shown in Fig. 4a and 4d. Likewise, a peripheral tongue-and-groove profile, shown in Fig. 4a and 4d, may be provided in the embodiment of Fig. 4c.

[0100] In the further embodiment shown in Fig. 4d, vertically extending first connecting elements 22 are provided on the groove edge, specifically a plurality of small-area first connecting elements 22 above one another to save material. The cladding board 12 is also shown in a typical wider variant, and comprises other further first connecting elements 22 in the centre for stabilisation. These may be connected to a further frame assembly unit 16.

[0101] Instead of the tongue-and-groove profiles shown in Fig. 4a to d, peripheral groove profiles may also be provided, in which case the cladding boards 12 are interconnected by means of external connecting rods 18, as shown in Fig. 1.

[0102] Fig. 5a is an enlarged view of a boundary region 32 of two cladding boards 12.

[0103] A first cladding board 12 is here provided with a groove profile 20, which comprises a groove 46 and two groove shoulders 50 delimiting the groove 46. The groove 46 and the groove shoulders 50 are each formed substantially equally thick, and extend over the thickness of the cladding board 12. The second cladding board 12 is provided with a tongue 14, the tongue 14 being inserted into the groove 46. At a front face 52, the cladding boards 12 adjoin one another without joints. A gap 56 is left in the contact region of the tongue 14 with the groove floor. Moreover, in the embodiment shown, a gap 56 is also left on the rear face 54. The tongue 14 is provided with expedient chamfers 58 on the front face so as to reduce undesirable breakage at the edges and reduce the risk of injury to the user. The groove shoulder 50 is also provided with a chamfer 58 to facilitate inserting the tongue 14 into the groove 46.

[0104] In the embodiment shown, on the rear face 54, a groove shoulder 50 delimiting the groove 46 protrudes further than a groove shoulder 50 delimiting the groove 46 on the rear face 52. At the same time, on the front face, a tongue shoulder of a second cladding board 12 projects past the rear-face tongue shoulder of the second cladding board 12. On the front face, a joint-free board formation is formed so as to form a joint on the rear face.

[0105] Fig. 5b shows an alternative embodiment of the boundary region 32 of two cladding boards 12 having an external tongue 14 in the form of a connecting bar 18. The two cladding boards 12 are provided with grooves 46. These may for example be formed peripherally. The front-face and rear-face edges of the cladding boards 12 are here provided with roundings 60 so as to reduce the risk of injury and avoid breakages. On the front face, the cladding boards 12 do adjoin one another, but a hair joint 62 is left. A gap 56 in the form of a joint [is left] on the rear face. In the embodiment shown, the groove shoulders 50 delimiting the groove 46 on the front face 52 of the cladding boards 12 each protrude further than the groove shoulders 50 delimiting the groove 46 on the rear face 54.

[0106] Of course, it is possible for the features to be combined with one another differently from in Fig. 5a and Fig. 5b.

[0107] EXAMPLE

[0108] The sound reduction index describes the capacity of a component or medium for insulating sound. In a test, the sound reduction index of a system according to the invention was determined and compared with that of a control system.

[0109] For the system according to the invention, a system “JuuNoo SilentClick-wall” was used, having adjustable supports and carriers and having a CW profile (C wall profile) of approximately 75 mm web width.

[0110] For the control system, a frame assembly unit in the form of a metal stand wall having a CW profile (C wall profile) of approximately 75 mm web width was used.

[0111] The flange of the frame assembly units was planked vertically on the front and rear faces with room-height cladding boards, with approximately 12.5 mm thick construction plasterboard “Rigips Habito 12,5” in each case on the front and rear face. Further, in each case a “Saint- Gobain Akustic TP 1” mineral wool inlay of 60 mm width in accordance with the conventional dimensioning in practice was inserted between the construction plasterboards. The board width is tuned to the 600 mm grid dimension of the “JuuNoo SilentClick-wall” system.

[0112] In the control system, vertically room-height construction plasterboards without edge profiling and having a 600 mm grid dimension were fixed to the frame assembly units in a known manner using quick-fix screws, specifically at a flange at the boundary between two construction plasterboards. In the system according to the invention, the construction plasterboards were provided with a groove profile on the first longitudinal edge and with a tongue profile on the second longitudinal edge, and fixed to the frame construction system using a hook-and-loop fastener as shown in Fig. 1.

[0113] Fig. 6 is a logarithmic graph for determining an evaluated sound reduction index RW (in decibels, dB) for a partition wall region, in other words for a wall system, when the system according to the invention and the control system from the example are used.

[0114] Fig. 6 shows the result of measuring the air sound insulation. A sound reduction index R (in decibels, dB) is plotted on the y-axis. A one-third octave band centre frequency f (in Hertz, Hz) is plotted on the x-axis. For the measurement, the sound reduction index R was measured for the individual frequencies at one-third octave intervals and the average taken in each case.

[0115] Line (1) shows the result for the system according to the invention, and line (2) for the control system. From 125 Hz, the system according to the invention clearly has a consistently somewhat higher sound reduction index than the control system. The fall in the range of 160 Hz for the control system is missing entirely for the system according to the invention, and this has particular advantages in the field of low-pitch footfall sound. In the range from 200 Hz to 315 Hz, the value is consistently approximately 5% better. In the range from 400 Hz to 2500 Hz, the value is approximately 10% higher, and then in the range above 2500 Hz the value is approximately 20% higher.

[0116] The evaluated sound reduction index Rw was determined in accordance with DIN EN ISO 717- 1 :2021-05.

[0117] For this purpose, the lines were aligned using a predetermined reference line, and the value taken by the shifted reference line at 500 Hz was determined. The evaluated sound reduction index Rw is corrected by spectrum adaptation values (in this case) C and Ctr. These values take account of the frequency characteristic of various sound sources, the sound reduction index being reduced by this value. Moreover, the method for determining the evaluated sound reduction index Rw is a standardised test which is routine to a person skilled in the art. The measurement data shown in Fig. 6 give the following for the evaluated sound reduction index:

[0118] Rw (C; Ctr) = 49.3 (-6, -14) dB for the system according to the invention (1);

[0119] Rw (C; Ctr) = 44 (-3, -7) dB for the control system (2), where

[0120] Rw is the evaluated sound reduction index in dB, and

[0121] C, Ctr are spectrum adaptation values in dB.

[0122] The system according to the invention thus has much better sound insulation.

[0123] REFERENCE NUMERALS

[0124] 10 System; 11 Wall; 12 Cladding board; 13 Wall attachment board; 14 Tongue; 15 Sealing tape;

[0125] 16 Frame assembly unit; 17 Wall attachment profile; 18 Connecting bar; 20 Groove profile; 22 First connecting element; 24 Second connecting element; 26 Web; 28 Flange; 30 Beading; 32 Boundary region; 34 Support; 36 Carrier; 38 Telescopic rail; 40 Hinge; 42 Fixing element; 44 Stop face; 46 Groove; 50 Groove shoulder; 52 Front face; 54 Rear face; 56 Gap; 58 Chamfer; 60 Rounding; 62 Hair joint

Claims

CLAIMS1 . Dismantlable system (10) for constructing partition walls, shaft walls or facing shells, in particular in the interior of a building, comprising- plaster-based cladding boards (12) and- frame assembly units (16) for holding the cladding boards (12), wherein the cladding boards (12) each have a groove profile (20), at least on a first edge, so as to be releasably interconnected to form a board formation, preferably joint-free on the front face, and wherein the frame assembly units (16) comprise systems of supports (34) and carriers (36), a support (34) connecting at least two mutually opposite carriers (36) in each case, and wherein the cladding boards (12) each have at least one first connecting element (22) on a rear face, and wherein the frame assembly units (16) each have, preferably on their supports (34), at least one second connecting element (24) suitable for cooperating with the at least one first connecting element (22) of the cladding boards (12) to releasably interconnect the cladding boards (12) and the frame assembly units (16), and / or wherein the at least one first connecting element (22) cooperates with the supports (34) and / or carriers (36) to releasably interconnect the cladding boards (12) and the frame assembly units (16).

2. System (10) according to claim 1 , wherein the system (10) comprises connecting bars (18), preferably plastics- based, which correspond to the groove profile (20), in such a way that the connecting bars (18), as tongues (14), can be releasably inserted into the groove profile (20), and / or wherein the cladding boards (12) each comprise, at least on the edge opposite the groove profile (20), a tongue profile which corresponds to the groove profile (20).

3. System (10) according to either of the preceding claims, wherein the cladding boards (12) each have a peripheral groove profile (20) or a peripheral tongue-and-groove profile.

4. System (10) according to any of the preceding claims,wherein the supports (34) comprise telescopic rails (38), in particular formed from sheet steel profiles which can be slid into one another, to position the carriers (36) at an adjustably variable distance from one another, and wherein the distance between the carriers (36) is adjustable, preferably releasably, preferably via first clamp, clip or snap-in elements, which fix the telescopic rails (38) with respect to one another.

5. System (10) according to any of the preceding claims, wherein the carriers (36) have stop faces (44), which can be positioned perpendicular to the supports (34) and by means of which the frame assembly units (16) can be braced against floor or ceiling surfaces of a building, and wherein the carriers (36) are preferably articulated to the supports (34) via hinges (40) so as to have at least one, in particular exactly one, degree of freedom with respect to the supports (34).

6. System (10) according to any of the preceding claims, wherein the groove profiles (20) of the cladding boards (12) are configured in such a way that the groove shoulders (50) delimiting grooves (46) on the front face (52) of the cladding boards (12) protrude further than the groove shoulders (50) delimiting grooves (46) on the rear face (54), a joint-free board formation being formed on the front face while forming a rear-face joint.

7. System (10) according to any of preceding claims 1 to 5, wherein the groove profiles (20) of the cladding boards (12) are configured in such a way that the groove shoulders (50) delimiting grooves (46) on the rear face (54) of the cladding boards (12) protrude further than the groove shoulders (50) delimiting grooves (46) on the front face (52), and a tongue shoulder projects on the front face beyond a rear-face tongue shoulder, a joint-free board formation being formed on the front face while forming a rear-face joint.

8. System (10) according to any of the preceding claims, wherein the front-face and / or rear-face edges of the cladding boards (12) are formed rounded and / or chamfered preferably to a width of up to 10 mm, more preferably up to 5 mm, even more preferably up to 3 mm and even more preferably up to 2 mm.

9. System (10) according to any of the preceding claims,wherein the first and second connecting elements (22, 24) together form a hook-and-loop fastener or magnetic connector, or wherein the first connecting elements and the supports (34) and / or carriers (36) together form a magnetic connector.

10. System (10) according to any of the preceding claims, wherein the system (10) has a dismantlable wallpaper on the board formation, which is preferably joint-free on the front face.

11. System (10) according to any of the preceding claims, wherein the plaster-based cladding boards (12) are plasterboards, drywall boards or gypsum fibreboards.

12. Method for constructing partition walls, shaft walls or facing shells, in particular in the interior of a building, using a system (10) according to any of the preceding claims, wherein the cladding boards (12) are releasably connected to the frame assembly units (16) and put together to form a board formation, preferably free of joints on the front face.

13. Method according to claim 12, wherein the first and second connecting elements (22, 24) are connected using a hook-and- loop fastener or a magnetic connector or wherein the first connecting elements (22) and the supports (34) and / or carriers (36) together form a magnetic connector.

14. Method according to either claim 12 or claim 13, wherein a dismantlable wallpaper is fixed to the board formation, which is preferably joint-free on the front face.

15. Plaster-based cladding board (12) comprising a groove profile (20) at least on a first edge, for use in a system (10) according to any of preceding claims 1 to 11.

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