SI20539A

SI20539A - Lightweight building panel with hidden way of fastening and process for carrying out the hidden joint thereof

Info

Publication number: SI20539A
Application number: SI200000093A
Authority: SI
Inventors: Andrej Novak; Silvo �TIH
Original assignee: Trimo D.D.
Priority date: 2000-04-07
Filing date: 2000-04-07
Publication date: 2001-10-31
Also published as: AU2421401A; DE60103153D1; EP1290288A1; SI20539B; WO2001077457A1; ATE266131T1; EP1290288B1

Abstract

A lightweight building panel with a hidden way of fastening and a procedure for carrying out a hidden joint of the lightweight building panels solve the problem of hidden fastening of two adjacent lightweight panels made of a softer core, the problem of insufficient mechanical properties of the hidden way of fastening as well as the fire resistance of such a way of fastening. The essentials of the invention are the use of an underlay element (5) and an overlapping joining part (4) as well as the shape of the joint, which enable the connection of the linings (e.g. sheet metal) of the left and the right panel to an additional joining element (10). The underlay element (5) and the additional bolt (10) improve the joint properties from the point of view of bearing capacity and fire safety.

Description

OPIS IZUMADESCRIPTION OF THE INVENTION

Področje tehnikeThe field of technology

Proizvodnja lahkih gradbenih plošč.Manufacture of lightweight building boards.

Prikaz problemaView the problem

Izum se ukvaija s problemom izvedbe spoja dveh sosednjih lahkih gradbenih plošč narejenih iz mehkejšega jedra, problemom pomanjkljivih mehanskih lastnosti skritega načina pritijevanja in problemom požarne odpornosti takega načina pritijevanja.The invention addresses the problem of designing a joint of two adjacent lightweight building boards made of a softer core, the problem of defective mechanical properties of the concealed way of fastening, and the problem of fire resistance of such a way of fastening.

Stanje tehnikeThe state of the art

V procesu montaže lahkih gradbenih plošč le-te sestavljamo tako, da se izpostavljeni rob ene prilega utoru druge plošče, s čimer dosežemo izravnavo vertikalne zamaknitve in oblikosklepno povezavo leve in desne plošče. Plošče učvrstimo s pomočjo razstavnega ali nerazstavnega spoja (npr. s pomočjo vijačne zveze).In the process of assembling lightweight building panels, they are assembled so that the exposed edge of one fits into the groove of the other panel, thereby achieving vertical offset and a shape-locking connection of the left and right panels. The plates can be fixed by means of an exhibition or non-disassembling joint (eg by means of a screw connection).

V svetu so na področju izdelave lahkih gradbenih plošč, izdelanih s poliuretanskim polnilom, znane rešitve t.i. skritega spoja, brez vidnih znakov pritrditvenih elementov. Le-te pa za spajanje lahkih gradbenih plošč, izdelanih z mineralnih vlaken (npr. kamena ali steklena volna) zaradi problema nosilnosti niso primerne. Oblikosklepna ali silosklepna povezava ene ali obeh pločevin s podlogo ali med seboj s prekritimi pritrdilnimi elementi pa ploščam daje bistveno izboljšanje požarne odpornosti. Znano je namreč, da pri pozam pride do deformacij plošč.There are well-known solutions in the field of manufacturing lightweight construction boards made with polyurethane fillers, i.e. hidden joint, with no visible signs of fasteners. However, they are not suitable for bonding lightweight building boards made of mineral fibers (eg stone or glass wool) due to the load bearing problem. The shape-locking or silo-locking connection of one or both sheets to the lining or to one another with covered fasteners gives the panels a significant improvement in fire resistance. Namely, it is known that the postures cause deformations of the plates.

Deformacija se v območju spoja odraža kot razklenitev spoja. V spoju pride do vstopa zunanjega zraka, ki je pogoj za napredovanje plamena. Daljši prekrivni del pa otežuje dostop zraku.Deformation in the area of the joint is reflected as a breakdown of the joint. External air enters the joint, which is a prerequisite for flame progression. The longer overlay makes it difficult to access the air.

Opis nove rešitveDescription of the new solution

Predmet predstavljenega izuma je Lahka gradbena plošča s skritim načinom pritrjevanja in postopek za izvedbo prikritega spoja lahke gradbene plošče ki rešuje zgoraj predstavljeni tehnični problem, pri čemer gre pri izumu zlasti za oblikovno prekritje pritrdilnih elementov sosednje plošče ob uporabi podložnih elementov z ustreznimi mehanskimi lastnostmi, ki služijo raznosu sil v primem obremenitve fasade zaradi srka vetra. Podložni element omogoči raznos sile na večjo površino, tako da na mestu pritrditve ne pride do preseganja tlačne trdnosti mehkejšega jedra. V primeijavi z do sedaj znanimi rešitvami na panelih iz trdega jedra (npr. poluretanska pena) ima predlagana rešitev veliko prednost glede požarnih karakteristik jedra.The object of the present invention is a lightweight construction panel with a concealed fastening method and a method for performing a concealed joint of a lightweight construction panel that solves the technical problem presented above, the invention being in particular the design of the adjacent panel fasteners using suitable mechanical elements that have appropriate mechanical properties that serve to spread forces in the prime of the load of the facade due to the heart of the wind. The support element allows the force to be spread over a larger surface so that the compressive strength of the softer core is not exceeded at the attachment point. Compared to the solutions so far known on hard core panels (eg polyurethane foam), the proposed solution has a major advantage over the fire characteristics of the core.

V bistvu gre za zaščito skritega pritrjevanja panelov, ki imajo polnilo iz stisljivega materiala, kar po podatkih izumitelja predstavlja novost na področju izdelave lahkih gradbenih plošč. Bistvo rešitve je uporaba ustreznega podložnega elementa, ki poveča nosilnost pritrdilnega mesta in s tem omogoči primernost obravnavanega skritega načina pritrjevanja za mehkejši tip polnila, kot je npr. volna iz kamenih ali steklenih vlaken.Basically, it is a protection of hidden fastening of panels, which have a filler made of compressible material, which according to the inventor is a novelty in the field of manufacturing lightweight construction panels. The crux of the solution is the use of a suitable washer that increases the load-bearing capacity of the attachment and thus makes the concealed concealed attachment suitable for a softer type of filler such as e.g. stone or glass fiber wool.

Lahke gradbene plošče so gradbeni elementi in se uporabljajo za fasade ali strehe in tipično obsegajo zunanjo plast (npr. vrhnji sloj), ki daje plošči obliko in jedro - polnilo iz materiala toplotno izolativnih (v nadaljevanju izolativnih) lastnosti, ki daje plošči trdnost in omejuje prenos toplote skoznjo. Tipično polnilo lahke gradbene plošče je mineralna ali steklena volna gostote do 150 kg/m³. Pri tem se lahko lahke gradbene plošče izdelujejo na kontinuirani proizvodni liniji, zunanja plast pa je lahko ravna ali kakor koli drugače oblikovana (manj ali bolj profilirana).Lightweight building panels are structural elements and are used for facades or roofs and typically comprise an outer layer (eg top layer) that gives the panel a shape and core - a material made of thermally insulating (hereinafter insulating) material that gives the panel strength and limits heat transfer through. A typical lightweight building block filler is mineral or glass wool with a density of up to 150 kg / m ³ . In this case, lightweight construction panels can be produced on a continuous production line, and the outer layer can be straight or otherwise shaped (less or more profiled).

Spoj dveh ali več sosednjih lahkih gradbenih plošč v procesu montaže je mogoče pokriti (in posledično zaščititi) oblikovno s prekrivanjem (kot primer zaščitnih sredstev). To pokritje oziroma zaščita, služi večim namenom. Zavoljo mehanskih lastnosti služi kot ojačanje spoja. Hkrati omogoča izvedbo spoja, kjer sta pločevini leve in desne plošče v spoju mehansko spojeni (npr. razstavno, z vijaki ali nerazstavno, s kovicami) in tako v primeru požara ne prihaja do zgodnje razklenitve spoja. Nevidna povezava obeh pločevin se lahko izvede s pritijevanjem z zadnje strani panela. Velika tesnost in labirintnost spoja v bistvu preprečuje dostop zraka v notranjost spoja in posledično oksidacijo in razvoj plamena v primeru požara. Prav tako je spoj oblikovan tako, da preprečuje dostop vode do mesta pritijevanja v primem dežja, zaradi česar ne potrebujemo dodatnih tesnil na pritrditvenem mestu. Za potrebe prijave je v nadaljevanju opisana vijačna zveza (kot primer pritrdilnih sredstev), a analogno je moč tu opisano funkcijo doseči tudi z drugimi pritrdilnimi elementi in velja v izogib ponavljanju opis vijačne zveze tudi za druge oblike pritrditve.The joint of two or more adjacent lightweight building boards during the assembly process can be covered (and subsequently protected) formally by overlapping (as an example of protective means). This coverage or protection serves several purposes. Due to its mechanical properties, it serves as a joint reinforcement. At the same time, it enables the connection of the sheets of the left and right panels in the joint to be mechanically jointed (eg exhibition, with screws or non-assembled, with rivets), so that in the event of a fire, the early separation of the joint does not occur. The invisible connection of the two sheets can be made by pressing in from the back of the panel. The great tightness and labyrinth of the joint essentially prevents air from entering the joint and the subsequent oxidation and development of the flame in the event of a fire. Also, the joint is designed to prevent water from reaching the place of attachment in the rain, so that no additional seals are required at the attachment site. For the purposes of the application, the screw connection (as an example of fasteners) is described below, but analogously, the function described here can also be achieved with other fasteners and, in order to avoid repetition, the description of the screw connection also applies to other forms of attachment.

Opisana povezava pločevin leve (v prijavi imenovane tudi prve) in desne (v prijavi imenovane tudi druge) plošče posledično omogoča izboljšanje mehanskih karakteristik spoja. Večja nosilnost spoja je zagotovljena s podložnimi elementi večje površine, kateri služijo raznosu obremenitve z enega vijaka na večjo naležno površino (kot primer spajalnih sredstev). Podložni elementi so lahko na primer izdelani z hladnim preoblikovanjem pločevine in imajo lahko na robovih ali v osrednjem delu ojačitve, katere pripomorejo k večji togosti podložnega elementa in s tem zagotavljajo še enakomernejšo obremenitev po površini. Podložni element je lahko izdelan tudi iz drugačnega materiala. Spoj je koncipiran tako, da poteka prenos sil iz roba plošče, ki ni direktno pritijen na rob plošče, kije pritijen na podlago preko sistema peroutor (kot primer spajalnih sredstev), tako na notranji, kot na zunanji oblogi. Podložni element je lahko na sredinskem delu nekoliko prednapet, tako, da ob privitju vijaka pride do izravnave elementa in enakomernejšega raznosa pritrditvene sile.The described connection of sheets of the left (also called first in the application) and the right (also called second in the application) plates consequently enables to improve the mechanical characteristics of the joint. The greater load-bearing capacity of the joint is provided by the support elements of a larger surface, which serve to spread the load from one screw to a larger support surface (as an example of fasteners). For example, the support elements may be made by cold forming the sheet metal and may have at the edges or in the central part of the reinforcement, which help to increase the rigidity of the support element and thus provide even more uniform loading over the surface. The support element may also be made of a different material. The joint is designed in such a way that forces are transferred from the edge of the plate, which is not directly attached to the edge of the plate, which is attached to the substrate via a peroutor system (as an example of fasteners), both on the inner and outer liners. The base element may be slightly pre-stressed in the middle part, so that when the screw is screwed in, the element is leveled and the attachment force is more evenly distributed.

Prav tako je mogoče razen s pritrdilnimi elementi spoj učvrstiti z razstavnimi zvezami, npr. z vijačno zvezo.In addition to the fasteners, the joint can also be secured by means of exhibition joints, e.g. with a screw connection.

Nenazadnje prekrivni del profila v bistvu izravna površino obeh plošč in prekrije mesto spoja in tako pripomore k lepšemu, uniformnejšemu videzu površine, brez vidnih znakov pritrditve, z minimalno vidno širino fuge na spoju.Last but not least, the overlay portion of the profile essentially offsets the surface of the two panels and covers the joint, thus contributing to a more uniform appearance of the surface without visible attachment signs, with a minimum visible joint width at the joint.

Podrobneje je bistvo izuma pojasnjeno v nadaljevanju z opisom in s priloženimi slikami, pri čemer so slike del pričujoče patentne prijave in je na njih prikazano:The essence of the invention is explained in more detail below with the description and the accompanying drawings, the drawings being part of the present patent application and showing them:

Slika 1. Razstavljen spoj med dvema lahkima gradbenima ploščama, pri čemer je prikazano izolativno polnilo (1), zgornja (2) in spodnja pločevina (3) lahke gradbene plošče, prekrivni del plošče (4), podložni element (5), vijačni element (6), pritrdilni rob plošče (8) in podporna konstrukcija (9).Figure 1. Disassembled joint between two lightweight building boards, showing insulating filler (1), upper (2) and lower sheet (3) of lightweight building panel, panel overlay (4), washer element (5), screw element (6), plate mounting edge (8) and support structure (9).

SEka 2. Na sUki je prikazan isti spoj v sklopljenem stanju.SEQ 2. The sUki shows the same joint when folded.

SEka 3. Na sEki je prikazan podložni element z vidno gubo (7) po dolžini podložnega elementa (5) in prednapetostjo vzdolž elementa.SECTION 3. The axle shows a washer element with a prominent fold (7) along the length of the washer element (5) and a prestress along the element.

SEka 4. Na sEki je prikazan isti spoj z uporabo dodatnega pritrdilnega elementa (10), v izvedbenem primeru vijaka, z notranje strani, ki je dodatna opcija za izboljšanje karakteristik spoja, tako iz vidika nosilnosti in požarne varnosti, pri čemer so na sliki prikazani izolativno pokalo (1), zgornja (2) in spodnja pločevina (3) lahke gradbene plošče, podložni element (5), vijačni element (6), podporna konstrukcija (9), pritrdilni element (10).SECTION 4. The SECTION shows the same joint using an additional fastener (10), in the embodiment of the screw, from the inside, which is an additional option for improving the joint characteristics, both in terms of load capacity and fire safety, with the illustration insulating cup (1), upper (2) and lower sheet (3) lightweight building boards, washer element (5), screw element (6), support structure (9), fastener (10).

V izvedbenem primeru je spoj med dvema sosednjim lahkima gradbenima ploščama s polnilom iz mineralne aE steklene voEie izveden razstavno, s pomočjo vijaka, ki hkrati služi za pritrditev plošč na podlago. Obe lahki gradbeni plošči sta obEkosklepno v razstavljivem vprijemu, pri čemer seže vrhnji sloj (npr. primemo obEkovana pločevina) leve (2) lahke gradbene plošče s prekrivnim delom (4) čez vrhnji sloj desne lahke gradbene plošče in nanjo nalega. Hkrati je skozi desno lahko gradbeno ploščo izdelana izvrtina, v katero je vstavljen vijak (6), ki je uvijačen v podlogo (npr. nosilni kovinski profil), na kateri se obe plošči nahajata oziroma jo prekrivata. Glava vijaka (6), ki se nahaja v utoru, katerega dno tvori prej označeno prekritje, je pokrita z prekrivnim spojnim delom (4), kateri zagotavlja boljše estetske, trdnostne, in varovalne razmere. Za izvedbeni primer na sliki 4 je potrebno poudariti, da zavoljo mehanske povezanosti obeh pločevin tudi v primeru morebitnega požara zveza ne bo kompromitirana.In the embodiment, the joint between the two adjacent lightweight mineral-glass-fiber-glass building panels is exhibited by means of a screw which simultaneously serves to attach the panels to the substrate. The two lightweight building boards are flush-mounted in a detachable grip, extending the top layer (e.g., cladding sheet) of the left (2) lightweight construction panel with the overlay (4) over and over the top layer of the right lightweight construction panel. At the same time, a hole can be made through the right-hand panel of the building, in which a screw (6) is inserted, which is screwed into the lining (eg a supporting metal profile) on which both panels are located or overlapped. The head of the screw (6), which is located in the groove, the bottom of which forms the previously indicated overlay, is covered by the overlapping connecting part (4), which provides better aesthetic, solid and protective conditions. For the embodiment in Figure 4, it should be emphasized that due to the mechanical connection of the two sheets, the connection will not be compromised even in the event of a fire.

Po sestavljanju obeh plošč desno lahko gradbeno ploščo privijemo v podlago, tako da pero, ki v izvedbenem primem obsega podložni element (5) in pritrdilni rob plošče (8), nalega v utor leve lahke gradbene plošče in nanjo pritiska ter tako zagotovi primeren nivo vodotesnosti in/ali oblikosklepnega vprijema. Lahko pa bi pero obsegalo le pritrdilni rob plošče (8), če bi ta izkazoval ustrezne trdnostne lastnosti. Plošče v vprijemu so tako prikazane na sliki 2. Prekrivni del panela (4) tako preprečuje ali omejuje dostop vode na mesto pritijevanja, pritrdilni rob plošče (8) pa preprečuje ali omejuje dostop vode med plošči oziroma dostop zraka v spoj plošč in notranjost prostora, ki ga plošče omejujejo.After assembling the two panels to the right, the construction panel can be screwed into the substrate so that the pen, which in the embodiment comprises the base element (5) and the mounting edge of the panel (8), fits into the groove of the left light construction panel and presses it to provide an adequate level of watertightness and / or form-locking. However, the pen could only comprise the mounting edge of the plate (8), if the plate has adequate strength. The panels in the grip are thus shown in Figure 2. The overlapping part of the panel (4) thus prevents or restricts the access of water to the fixing point, and the fixing edge of the panel (8) prevents or restricts the access of water between the panels or the access of air to the joint of the panels and the interior, bounded by panels.

Moč pa je spoj izvesti tudi ob nižjih zahtevah glede tesnosti (labiritnosti), kar omogoča uporabo manj natančnih orodij.However, the power can also be made with lower labyrinthine requirements, making it possible to use less precise tools.

Material vrhnjega sloja lahkih gradbenih plošč (2, 3) je lahko različen, od črne ali barvne pločevine, lahko so uporabljeni drugi kovinski materiali, lahko pa tudi plastične mase in drugi nekovinski materiali. Materiale je moč kombinirati, tako da je npr. uporabljena pločevina, prevlečena s plastično maso ipd.The material of the top layer of lightweight building boards (2, 3) may be different from that of black or colored sheet metal, other metal materials may be used, and plastics and other non-metallic materials may be used. Materials can be combined so that e.g. used plastic coated sheet, etc.

Nadalje je mogoče spoj še dodatno ojačati z ojačitvenimi sredstvi, npr. s podložkami, podložnimi profili, rebri ali s polnilom in tako trdnost in nosilnost spoja še povečati. V teh primerih se vstavlja ojačitveno sredstvo pod prekrivni spojni del (4). Tako prikrita ojačitvena sredstva dodatno prispevajo k raznosu pritrditvene sile na večjo površino in s tem posledično k večji nosilnosti plošč, ob tem da estetika spoja in plošč ni zmanjšana. Spoj je tako v izvedbenem primeru izveden z vijakom (6) in dodatnim podložnim elementom (5), ki služi kot ojačitveno sredstvo, pri čemer je prednostna oblika podložnega elementa razvidna na sliki 3.Further, the joint can be further strengthened with reinforcing agents, e.g. with washers, washers, ribs or filler to increase the strength and load-bearing capacity of the joint. In these cases, a reinforcing agent is inserted under the cover coupling part (4). The concealed reinforcement means additionally contribute to the spread of the fixing force over a larger surface area and, consequently, to the increased load-bearing capacity of the plates, without reducing the aesthetics of the joint and plates. In this embodiment, the joint is made with a screw (6) and an additional washer element (5) which serves as a reinforcing means, the preferred shape of the washer element being shown in Figure 3.

Podložni element (5) je lahko v izvedbenem primeru na robovih ojačen s primernim preoblikovanjem, doseženim v procesu njegove izdelave, npr. s postopkom hladne preoblikovanje materiala, iz katerega je narejen, prednostno jeklene pločevine. Ojačitev je lahko izvedena še z izvedbo gube (7), kar omogoča zadovoljivo togost podložnega elementa in ustrezno porazdelitev sile, povzročene z vijačenjem vijaka, po celotni površini podložnega elementa. Guba je lahko izvedena z upogibanjem ali z ustrezno mehansko obdelavo v stiskalnici (hladnim preoblikovanjem).In the embodiment, the base element (5) can be reinforced at the edges by a suitable transformation achieved in the process of its manufacture, e.g. by the process of cold forming the material of which it is made, preferably of steel sheet. The reinforcement may also be provided by the construction of a crease (7), which allows for a satisfactory rigidity of the washer element and an adequate distribution of the force caused by the screwing of the bolt over the entire surface of the washer element. The crease can be made by bending or by proper mechanical processing in the press (cold forming).

V posebnem izvedbenem primeru je podložni element (5) v svojem osrednjem delu nekoliko upognjen, tako da ob pritijevanju pride do izravnave podložnega elementa (5) in enakomernejše porazdelitve sile zavoljo vijačenja vijaka. Dosežen je torej efekt prednapetosti.In a particular embodiment, the washer element (5) is slightly bent in its central part, so that when pressed, the washer element (5) is aligned and the force is distributed more evenly due to the screwing of the screw. Therefore, the prestressing effect is achieved.

Oblika površine pločevine (2,3) leve in desne lahke gradbene plošče izven zgoraj opisanega sistema pero-utor je prilagojena zahtevam tržišča in ni predmet te patentne prijave ter je prikazana zavoljo lažjega razumevanja.The shape of the sheet surface (2,3) of the left and right light construction panels outside the pen-groove system described above is adapted to market requirements and is not the subject of this patent application and is shown for ease of understanding.

Prav tako je možna izvedba, ki zagotavlja mehansko povezavo dveh plošč. Taka izvedba prikazana na sliki 4 daje spoju Še večjo požarno odpornost kot izvedba, kjer je mehansko pritijena na podlago le ena plošča. V tem izvedbenem primem pritrdilna sredstva po izumu obsegajo vsaj en vijak za pritrditev vsake od plošč na podlago, pri čemer eden od pritrdilnih elementov (10) sega skozi podporno konstrukcijo (9) ter skozi vezni pločevini obeh lahkih gradbenih plošč in hkrati tudi skozi podložni element (5).It is also possible to provide a mechanical connection of the two panels. Such an embodiment shown in Figure 4 gives the joint even greater fire resistance than an embodiment where only one panel is mechanically attached to the substrate. In this embodiment, the fastening means according to the invention comprise at least one screw for attaching each of the plates to the substrate, with one of the fasteners (10) extending through the supporting structure (9) and through the connecting sheets of the two lightweight building boards and simultaneously through the supporting element (5).

Razumljivo je, da je mogoče opisane rešitve izvesti tudi v drugačnih oblikovnih izvedenkah, kar pa ne spreminja vsebine izuma.It is to be understood that the solutions described can also be implemented in other design embodiments, which does not alter the content of the invention.

Claims

1. A lightweight construction panel with a concealed fixing method comprising a filler, wherein at least one side of the lightweight construction panel is constructed so that at least two of the lightweight construction panels in contact with the sides are in contact with one another and are attached to a base (9) with an exhibit or non-exhibit link, characterized in that the filler comprises compressible material, preferably mineral wool, and that the concealed support element (5), the attachment element (6) and the attachment edge (8) connect the light construction panel.

2. Lightweight construction panel according to claim 1, characterized in that at least one hidden fastening element (5,6,8) forms a light construction connection with the lightweight construction panel.

3. A lightweight construction panel with a concealed fixing method comprising a filler, wherein at least one side of the lightweight construction panel is constructed so that at least two of the light construction panels in contact with the sides of the contacting lightweight panel attach to each other a base (9) having an exhibition or non-exhibiting connection, characterized in that it comprises a compressible material of a compressible material, preferably mineral wool, fasteners, joint protection means and attachment means attached thereto.

Lightweight construction panel according to any one of the preceding claims, characterized in that the fastening element is covered by an overlapping connecting part (4).

Lightweight construction panel according to any of the preceding claims, characterized in that the switching of the panels, using the overlapping part of the joint (4), the fixing edge of the panel (8) and its fitting to the adjacent panel, significantly limits the access of water in case of rain to the place of attachment, at the same time it also restricts air access, preventing the development of flames in the event of a fire.

Lightweight construction board according to any of the preceding claims, characterized in that it is designed to allow both vertical and horizontal laying of the panels.

Lightweight construction board according to any one of the preceding claims, characterized in that the fixing of the panels is carried out with screws (6) and additional support elements (5), the purpose of which is to distribute the load from one screw to a larger bearing surface.

8. Lightweight construction panel comprising a support element (5) of a lightweight construction board joint, characterized in that the support element (5) is bent in the central part so that, when the screw is tightened, the element is compensated for a more uniform distribution of the fixing force. .

A lightweight construction panel comprising a washer element (5) according to any preceding claim, characterized in that the washer element (5) is reinforced at the edge and / or in the central part.

10. Lightweight construction panel according to any one of the preceding claims, characterized in that it is designed to transfer forces from the edge of the non-directly attached panel to the edge of the panel attached to the substrate via a pen-groove system to the inner and / or the outside of the board.

Lightweight building board according to any one of the preceding claims, characterized in that reinforcements are provided along the joint with reinforcing means.

Lightweight construction panel according to any one of the preceding claims, characterized in that a single concealed fastening element (10) can extend through both lightweight construction panels and the fastening element (5).

A method for performing a concealed joint of a light building panel, comprising performing the joint of at least two in the assembly process essentially with the sides of the interconnecting light building panels, made to fit one another and attached to the base (9) by an exhibition or non-disjoint connection, characterized in that the filler comprises compressible material, preferably mineral wool, and that the process comprises steps for the use and / or manufacture of a joint plate according to the invention as defined in any preceding claim.