EP2530218B1 - Ceiling or wall panel and method for cladding a ceiling or wall area - Google Patents

Description

The invention relates to a panel, in particular a ceiling or wall panel, according to the features in the preamble of claim 1 and a method for covering a ceiling or wall area with such a panel according to the features of claim 14.

In addition to the purely color design of a space limiting ceiling or wall areas, these can also be covered or covered with suitable coverings. By means of suitable cladding elements almost perfect surfaces are created within a very short time, which offers various advantages especially on uneven ground or in the course of expansion or subsequent insulation measures.

For this purpose, elongated panels are usually used, which are completed only in their installation position to a surface paneling and require no reworking in addition to the high quality optics.

In order to create a durable and easy-to-produce connection between the individual panels, they have at least their own opposite longitudinal edges on a profiling, which engage in installation position with each other. The attachment to ceiling or wall areas requires appropriate measures to determine the panels in their respective installation position. Solutions customary in the state of the art provide for this that the individual panels are connected to the respective substrate via fixing means, the respective fixing means being arranged in the region of the profiling. Since the individual panels are completed one after the other in their installation position to a surface cladding, these systems provide that the respective panel are first used with one of its longitudinal edges in the profiling of an already defined panel, while the opposite longitudinal edge of the now used panel via a fixing is determined. This results in a successive structure of the surface covering during assembly.

The state of the art is the DE 20 2008 015 568 U1 to call. It is a panel assembly consisting of at least two juxtaposed, interconnected panels described, in particular wall, ceiling or floor panels, preferably made of wood, the panel an especially designed as a visible surface top and the top opposite bottom and the top and Has underside connecting end faces, wherein a first panel is provided on at least one of its end faces with a groove and a second panel on at least one of its end faces with a spring. At the groove a latching means and on the spring a latching element is provided. In the installed position of the panel arrangement, the panels may optionally assume a plurality of relative positions to each other, wherein at least in one of the relative positions, the latching means and the latching element cooperating latching in such a way that the spring at least partially in the groove. The tongue and groove arrangement is designed such that in particular by moisture, dryness or by heat-changing dimensions of the individual panels can be balanced each other. It should be prevented a gap formation. This is achieved by the interlocking latching means and latching elements.

The DE 100 64 280 C1 discloses a panel for interior work, which has on at least two of its opposite sides a profiling of the longitudinal edges, wherein at least a portion of the profilings is intended to bring in installation position a plurality of panels with each other. In order to fix the respective panel in its position, suitable fixing means are provided, which are arranged in the region of the profiling of the panel and connect it to the respective substrate. Adjacent panels come during their installation on the marginal profiles in engagement.

Especially in the case of the covering of ceiling areas, there is the need for safety reasons alone that the last used in the already fixed panel adjacent panel is so long held securely on this until it is set via a fixing in its installed position. Critical moments therefore always arise when the installer of the surface paneling unsupported hanging last panel in the profiling of the already defined panel to get, for example, new fixative.

For this purpose, the previously described DE 100 64 280 C1 arranged in the region of the profiling latching means over which the nested panels at least partially lock together. The latching takes place by the last inserted panel is pushed so far into the already fixed panel with appropriate force until the latching engage with each other.

If the resistance occurring in this case is not overcome, the required locking is not yet done, so that there is a risk of falling down the still hanging panel.

In addition, the latching between the individual panels is designed such that the impact between the individual panels of their profiled longitudinal edges presses them against one another in order to produce as closed a joint as possible. In an alternative embodiment, an at least partial bonding of the interlocking profiles is shown. Especially when using natural materials for the individual panels are due to Temperature and humidity fluctuations length and / or width strains, which sometimes lead to high voltages between the specified panels.

These stresses can become so high that individual panels are at least partially displaced from their position in the installation plane, whereby the overall aesthetic impression of the entire clad surface suffers.

Against this background, the design of the necessary in particular for security locking means still has room for improvement.

The present invention has for its object to improve a ceiling or wall panel to the effect that its coupling and latching with other panels is facilitated and the coupling required for tongue and groove connection is formed as free of stress as possible. Furthermore, a method for covering a ceiling or wall area with such a panel will be shown, which allows easy and safe installation of the individual panels.

Hereinafter, a ceiling or wall panel is proposed, which has an elongated panel body. At one longitudinal edge of which at least one groove is arranged, whereas at one of the groove opposite longitudinal edge of the panel body, a spring is formed. The arrangement of tongue and groove of the panel body can be coupled with at least one other similar panel body to form a tongue and groove connection. In the region of the groove and the spring latching means engageable with each other are arranged, through which the panel body in the coupled state are fixable to each other. According to the invention, the latching means are spaced apart in the coupled state of the panel body and form a parting plane between them. In this case, the respective levels of the opposing latching means are either in front of the parting plane or in parting plane, so that the latching means are not engaged with each other. The latching means are thus only by pivoting at least one of the coupled together Panel body around the longitudinal direction of the tongue and groove connection at least partially engageable with each other.

The particular advantage is that despite the possibility of locking during the coupling process no resistance must be overcome. In particular, the installation of long panels is associated with the well-known in the art tongue and groove connections with Verrastungsmitteln with increased effort, since the locking means over the entire length of the panel are to be coupled together with a corresponding effort with each other, since the prevailing resistance correspondingly large is.

The presented panel offers the advantage that the required locking is established by simply pivoting the last used panel within the tongue and groove connection as needed. In other words, the panel according to the invention offers the possibility of switching the latching function on or off in the coupled state with other panels.

Advantageous developments of the basic concept of the invention are the subject of the dependent claims 2 to 10.

In the usual way, the panel body has a visible side, wherein the first latching means is arranged on a side facing the visible side of the spring. In contrast, the second latching means is formed on a groove cheek of the groove. The arrangement of the respective latching means within the tongue and groove connection makes it clear that the locking function can be switched on solely on the basis of gravity, by the last inserted panel at its free end, closer to its longitudinal edge opposite the tongue and groove connection , unsupported hanging down. Preferably, the latching means are formed out of the panel body. In principle, their respective elevations can lie in a plane with the other course of the subregions of groove and / or spring surrounding the latching means. For this purpose, for example, only partial areas of the panel body would be removed. Alternatively, a shoulder may be formed in the groove cheek which springs back against the groove. The second latching means is here in the paragraph of Nutwange arranged so that their height levels jump back behind the surrounding portions of the groove cheek. By such a configuration, the activation range of the latching is adjustable, so that the last used panel, for example, must be more strongly pivoted relative to the already defined panel to activate them.

In an alternative, the groove cheek on an inclined surface, which is inclined relative to the groove, in particular of the surrounding portions of the groove. Here, the second latching means is formed in or on the inclined surface of the groove cheek. This also makes it possible to adjust the required pivoting in relation to the panel already set in order to activate the required locking, in particular the latching, within the tongue and groove connection.

Preferably, the first latching means is arranged at a defined distance from the front edge of the spring. As a result, the spring has a sufficiently long section, which can engage in the groove of the adjacent panel. Due to the distance of the first latching means to the front edge of the spring, the required insertion depth of the spring is determined in the groove before the latching can be activated by pivoting the last used panel. In order to achieve the best possible fit between the tongue and groove, the distance is preferably at least 20% of the length of the spring. In principle, the latching means may also extend to the leading edge of the spring for production reasons.

The spring has a bevel on its side facing the visible side of the panel body. Alternatively, the spring may have a rounding on its side facing the visible side. Both rounding and chamfer serve to facilitate insertion of the spring into the groove.

Advantageously, the panel bodies coupled to each other thus have no interference fit between them. As a result of the possibility of switching off the latching in the coupled state of the panels, no counter bearing of any voltage built up in the transverse direction of the panel body is consequently made possible. This allows the panel despite activatable locking during assembly in its end position in the installed state carry out possible stretching in the transverse direction, without building unnecessary and sometimes damaging or at least the overall visual impairment of tensions or bulges.

Furthermore, the panel body in the region of the groove may have a tongue opposite the tongue. This tongue can have a groove extending in the longitudinal direction of the groove, by means of which the position to be taken of a fixing means for fixing the panel body in its installed position is predetermined. The groove may serve to define a unique mark for the use of pin-shaped connecting means, such as screws or nails. Furthermore, the usual in the prior art brackets for fixing the panels may have a corresponding elevation, which correspond to the groove. As a result, the position of the clip on the panel body, closer to the tongue, set. In addition, the bump in combination with the groove may help to secure the clip to the panel body by engaging the projection of the clip into the groove, more specifically the undercut formed thereby.

With regard to the cross section of the spring, the latching means arranged on it can have various embodiments. In the form of a survey, the first latching means may be formed, for example, dome-shaped or rectangular. Preferably, the first latching means on at least one toothed element, which is engageable with the second latching means of the groove.

In a preferred embodiment, the latching means arranged on the groove and on the spring are formed identically.

In an advantageous manner, the second latching means also has at least one toothed element in the cross-section of the groove. Preferably, the tooth elements of the latching means in cross section in each case two obliquely extending flanks. The flanks thus form at least one oblique surface of a triangle. Furthermore, the flanks can also be inclined in the same way. Basically, the obliquely running flanks close an angle between themselves. At least one toothed element of the spring may include a smaller angle between its flanks than the toothed element of the groove. In this embodiment, the locking means arranged on the spring is constructed finer, so that its tips formed from the converging flanks with respect to the tips of the tooth elements of the groove have smaller distances. By this smaller screening of the first latching means on the spring a finer division is made possible, so that the latching offers in itself a higher number of possible Verrastungsstellen.

The panel body advantageously has at least one of its longitudinal edges a chamfer arranged in the region of its visible side. In principle, the chamfer can be designed to be straight or rounded. Here are two chamfers in the coupled state of two panel body directly opposite and form a visually appealing and harmonious joint. Of course, any surface structure as well as coloring and decorating the visible side of the respective panel is also present on this bevel, creating a total of a high-quality impression.

The panel body has at its two longitudinal edges each have an end face. In the coupled state of two panel bodies, these end faces lie directly against one another and can have the chamfer described above. Alternatively, the opposite in the coupled state of the panel body end faces may also be spaced from each other. As a result, a visual range of the spring between the mutually spaced end faces of the panel body can be seen. For the design of the field of view of the spring, what has been said above applies, so that this also follows in its coloring and decoration or structuring of the surface of the field of vision on the visible side. Alternatively, the field of view of the spring may be different in color as well as in its decor or in the structuring, whereby an extremely distinctive visual joint is formed in the coupled state of the panel body.

The panel of the invention allows a very easy to install element, the coupling and locking with other panels is much easier. By means of pivoting on as well as ausstellbare locking In the region of the tongue and groove connection no resistance must be bridged during the insertion of the spring into the groove in order to lock the adjacent panels together. As a result, the locking is only active when it is really needed. In the present case this is always the case when the last hinged panel hangs freely on its longitudinal edge opposite the tongue and groove connection. Due to the usually disabled in the installed state locking and locking between the adjacent panel bodies a tension-free tongue-and-groove connection is possible, which easily allows any strains of the panel with temperature or humidity fluctuations. As a result, an easy to build and long-term stress-free arranged panel is created, the locking means are also economically easy to produce.

The procedural part of the object is achieved by a method for covering a ceiling or inclined wall portion having the features of claim 11.

Advantageous developments emerge from the measures of the dependent claims.

Hereinafter, a method for covering a ceiling or inclined wall portion is shown with at least two panels. First, the first panel is placed in its installation position by being fixed to the ceiling or wall area with at least one fixing agent. In principle, the respective ceiling or wall region can at least in some areas have a corresponding substructure, which can be produced in the usual way by a deflation. The fixing means used may be, for example, rod-shaped connecting means such as screws or nails. Furthermore, the use of known in the art brackets is also conceivable. These brackets are set with the help of screws or nails on the respective substrate. Following the second panel is at least partially inserted with its spring in the groove of the already established first panel. According to the invention, the second panel is now in its at least partially inserted state about the longitudinal direction of the tongue and groove connection in about a Verrastungslage pivots. In particular, in the arrangement in a ceiling area, the pivoting already takes place automatically due to gravity by the tongue-and-groove joint opposite longitudinal edge of the panel freely unsupported, whereby the spring of the last used second panel at least partially within the groove of the already established first panel canted. As a result, the latching means are at least partially engaged with each other. As a result, the second panel is held on the ready-set first panel. This state can be used, for example, for the respective fitter to leave the merely suspended second panel unattended in order to fill up his possibly assumed supply of fixing agents. Due to the non-existent to be bridged resistance when inserting the second panel in the already specified panel beyond the use of manpower is reduced, as this longer panels can be easily hooked by a single fitter.

In a further step, the second panel is preferably pivoted out of the latching position into an installed position about the longitudinal direction of the tongue and groove connection. As a result, the latching means are again separated from each other by releasing their holding function. If necessary, the second panel is moved in its now parallel to the already established first panel mounting position such in the transverse direction on the first panel until the required tongue and groove connection is completely formed. This can always be necessary if the spring of the last inserted panel is only partially disposed within the groove of the already defined panel and the latching means were already engaged. As a result, the panels are loosely coupled together. In particular, in the arrangement in a ceiling area, the latch would grab again immediately, provided that the groove-spring connection opposite longitudinal edge of the last hinged panel would be released, for example. The thus automatically adjusting locking between the panels increases the safety, so that the last hinged panel does not slip even with a sudden and unwanted unsupported storage from the already established panel.

In order to complete the process of covering the ceiling or wall area, the second panel is also fixed at its tongue and groove longitudinal edge opposite with at least one other fixing means on the ceiling or wall area.

Figur 1

zwei erfindungsgemäße Paneelen im miteinander gekoppelten Zustand in geschnittener Darstellungsweise;

Figur 2

einen Detailausschnitt der zwischen den Paneelen der Figur 1 ausgebildeten Nut-Feder-Verbindung in gleicher Darstellungsweise;

Figur 3

die Paneelen der Figur 1 während des Kopplungsvorgangs in gleicher Darstellungsweise;

Figur 4

die Paneelen der Figur 1 mit einer alternativen Befestigungsmethode in gleicher Darstellungsweise;

Figur 5

die Paneelen der Figuren 1 und 4 in einer alternativen Ausgestaltungsform in selber Darstellungsweise;

Figur 6

eine weitere Ausführungsform der erfindungsgemäßen Paneele während des Kopplungsvorgangs und

Figur 7

die Paneele aus Figur 6 im gekoppelten Zustand.

The invention will be explained in more detail with reference to some schematically illustrated in the drawings embodiments. Show it.

FIG. 1

two panels according to the invention in the coupled state in a sectional representation;

FIG. 2

a detail of the between the panels of the FIG. 1 trained tongue and groove connection in the same representation;

FIG. 3

the panels of the FIG. 1 during the coupling process in the same way;

FIG. 4

the panels of the FIG. 1 with an alternative attachment method in the same representation;

FIG. 5

the panels of the FIGS. 1 and 4 in an alternative embodiment in self-presentation;

FIG. 6

a further embodiment of the panels according to the invention during the coupling process and

FIG. 7

the panels off FIG. 6 in the coupled state.

FIG. 1 shows two panels 1, 1a coupled together according to the invention. Both the first panel 1 and the second panel 1a each have a similar panel body A, B on. The presentation of the FIG. 1 is to be understood that in the present case two identical panels 1, 1 a are coupled together, so that the different configuration of the opposite longitudinal edges 2, 2 a is apparent.

The panels 1, 1a have an elongated panel body A, B, on whose one longitudinal edge 2 a spring 3 is formed. In contrast, is at one of the spring opposite longitudinal edge 2a of the panel body A a groove 4 is arranged. In the present case, the two panel bodies A, B are coupled together to form a tongue and groove connection.

With reference to the representation of FIG. 1 the panel body A on the right is already fixed via a fixing means 5 to a ceiling or wall region C. The fixing means 5 has the shape of a retaining clip and is connected via a screw or a nail with the ceiling or wall portion C.

Opposite the ceiling or wall region C, the panels 1, 1a have a correspondingly configurable visible side D.

In the region of the groove 4 and the spring 3 locking means 6, 6a are arranged, which are engageable with each other, so that the panel body A, B are fixed to one another in the coupled state. The first latching means 6 is arranged on one of the visible side D facing region of the spring 3. In contrast, the second latching means 6a is formed on a groove cheek 7 of the groove 4.

At one of the groove cheek 7 opposite side of the groove 4, a tongue 8 is formed, which in this case the ceiling or wall portion C faces. The tongue 8 has a groove 9 extending in the longitudinal direction X of the groove 4. The groove serves to predetermine the position to be adopted of the fixing means 5 shown here in the form of a retaining clip. The retaining clip has for this purpose a corresponding survey, which engages in the groove 9 of the tongue 8.

FIG. 2 shows a set with a dash-dot circle detail of the FIG. 1 , In the presentation of FIG. 2 the tongue and groove connection between the panel bodies A, B is shown in more detail. In this view, it can be seen that the latching means 6, 6a have individual tooth elements 10, 10a. In the present case, the latching means 6, 6a are identical. Furthermore, it can be seen that the tooth elements 10, 10a each have two obliquely extending flanks 11, 11a, which enclose an angle E between them. The latching means 6 of the spring 3 is of the front edge 12 at a distance Y1 arranged. In the present case, the distance Y1 corresponds to approximately 36% of the length F of the spring 3.

Furthermore, the spring 3 on its side facing the visible side D has a rounding 13. In principle, this area may also have a chamfer instead of a rounding 13. The longitudinal edges 2, 2 a have directly opposite end faces 14, 14 a. Both end faces 14, 14a pass over a rounded chamfer 15, 15a into the visible region of the visible side D of the panels 1, 1a.

Good to see that the tongue 8 of the groove 4 has a shoulder 16, in which the fixing means 5 engages in the form of a retaining clip.

With respect to the latching means 6, 6a it is clear that these are spaced from each other here and form a separation plane G between them. Since none of the tooth elements 10, 10a pierces the parting plane G, they also do not engage with each other here.

FIG. 3 illustrates the coupling process between the panel bodies A, B. In this phase, the spring 3 is only partially suspended in the groove 4 of the already defined panel body A. The last inserted panel body B is pivoted relative to the already defined panel body A in a Verrastungslage Z1. As a result, the spring 3 is tilted within the groove 4. It can be clearly seen that the tooth elements 10 of the first latching means 6 of the spring 3 have pierced the parting plane G and thus at least partially engage with the toothed elements 10a of the second latching means 6a. In this position, the last hinged panel body B is held on the already defined panel body A.

To finally displace the last hinged panel body B in its intended mounting plane, this is pivoted from its latching position Z1 in an installation position Z2. The installation position Z2 is already in FIG. 1 shown. In the installed position Z2, the panel panels A, B lying directly opposite one another are aligned substantially parallel to one another.

FIG. 4 Here, a fixing means 5a in the form of a screw or a nail in the region of the not recognizable here groove 9 through the tongue 8 of the groove 4 is arranged therethrough, whereby the panel body A on the Ceiling or wall area C is fixed. As a result, the material required for fixing material is reduced to a minimum. In order to avoid possible stresses, the passage opening for the fixing means 5a required for this can have some play, so that the panel body A can move relative to the fixed fixing means 5a at least to a limited extent in the transverse direction Y. In any case, the fixing means 5a serves to hold the panel body A in its vertical direction Z immovably on the wall or ceiling area C.

FIG. 5 represents another alternative to those in the FIGS. 1 and 4 Here, a spring 3a is formed significantly longer, whereby the opposite end faces 14, 14a are significantly further apart. As a result, a field of view 17 of the spring 3a between the end faces 14, 14a from the visible side D can be seen.

The FIG. 6 shows a further variant of the panel body A, B according to the invention during the coupling process. The spring 3 is partially suspended in the groove 4. The panel body A has been previously fixed with a fixing agent 5a. The panel body B is pivoted relative to the panel body A in the Verrastungslage Z1, so that the spring 3 is tilted within the groove 4. In contrast to the previous embodiments are in FIG. 6 rounded tooth elements 10b, 10c used. The tooth elements 10b are at least partially in engagement with the tooth elements 10c. Since the areas with the tooth elements 10b, 10c are designed bevelled, coupling can only take effect if the panel body B is inclined in the latching position Z1. Of course, the tooth elements can also be made square in addition to a triangular or rounded configuration. Decisive is the holding function, as it comes in a depression and an increase in the form of, for example, a cam to fruition. In addition, all corners of the panel body A, B in FIG. 6 folded or rounded executed.

FIG. 7 shows the panel body A, B from the FIG. 6 in installation position Z2.

Reference numerals:

1 -

Panel, first

1a -

Panel, second

2 -

longitudinal edge

2a -

longitudinal edge

3 -

feather

3a -

feather

4

groove

5 -

fixer

5a -

fixer

6 -

Latching means, first

6a -

Latching means, second

7 -

cheek

8th -

tongue

9 -

groove

10 -

tooth element

10a -

tooth element

10b -

tooth element

10c -

tooth element

11 -

flank

11a -

flank

12 -

leading edge

13 -

curve

14 -

face

14a -

face

15 -

chamfer

15a -

chamfer

16 -

paragraph

17 -

viewing area

A -

panel body

B -

panel body

C -

Ceilings or wall area

D -

Main page

E -

angle

F -

length

G -

parting plane

X -

longitudinal direction

Y -

transversely

Z -

vertical direction

Z1 -

Verrastungslage

Z2 -

Mounting position

Claims (14)

1. Ceiling or wall panel, which has a long panel body (A) at the one longitudinal edge (2) of which is disposed a groove (4) and at a longitudinal edge (2a) being opposite to the groove (4) is formed a tongue (3, 3a), so that the panel body (A) can be coupled with at least one further panel body (B) of the same sort under the formation of a tongue-and-groove connection, wherein in the region of the groove (4) and the tongue (3, 3a) latching means (6, 6a) are disposed which can be brought into engagement with one another, by means of which the panel bodies (A, B) in coupled state can be fixed to one another, wherein the latching means (6, 6a) in coupled state of the panel bodies (A, B) are distanced from one another and form a plane of separation (G) between themselves, wherein the latching means (6, 6a) only through pivoting at least one of the panel bodies (A, B) coupled with one another around the longitudinal direction (X) of the tongue-and-groove connection can be brought at least sectionally into engagement with one another, wherein the panel body (A, B) has a viewing side (D) and wherein the second latching means (6a) is formed at a groove sidewall (7) of the groove (4), characterised in that the first latching means (6) is disposed at a region of the tongue (3, 3a) facing the viewing side (D) and wherein the second latching means (6a) is formed in a section of the groove sidewall (7), which recedes in respect to the groove (4) or is formed in an inclined surface of the groove sidewall (7) which is tilted with respect to the groove (4).
2. Panel according to claim 1, characterised in that the first latching means (6) is disposed at a distance (Y1) from the front edge (12) of the tongue (3, 3a).
3. Panel according to claim 1 or 2, characterised in that the tongue (3, 3a) at its region facing the viewing side (D) has a bevel or a rounding (13).
4. Panel according to one of claims 1 to 3, characterised in that the panel bodies (A, B) coupled with one another have no press-fitting between themselves.
5. Panel according to one of claims 1 to 4, characterised in that a lug (8) lying opposite the groove sidewall (7) has a corrugation (9) extending in longitudinal direction (X) of the groove (4), through which the position to be adopted of a fixing means (5, 5a) is predefined.
6. Panel according to one of claims 1 to 5, characterised in that the first latching means (6) in cross-section of the tongue (3, 3a) has at least one toothed element (10).
7. Panel according to one of claims 1 to 6, characterised in that the latching means (6, 6a) are formed identically.
8. Panel according to claim 6, characterised in that the second latching means (6a) in cross-section of the groove (4) has at least one toothed element (10a), wherein the toothed elements (10, 10a) in cross-section each have two flanks (11, 11a) extending at an angle to one another and the at least one toothed element (10) of the tongue (3, 3a) with respect to the toothed element (10a) of the groove (4) encloses a smaller angle (E) between its flanks (11, 11a).
9. Panel according to one of claims 1 to 8, characterised in that the panel body (A, B) at least one of its longitudinal edges (2, 2a) has a bevel (15, 15a) in the region of its viewing side (D).
10. Panel according to one of claims 1 to 9, characterised in that the panel body (A, B) at its two longitudinal edges (2, 2a) has in each case a front face (14, 14a), wherein the front faces (14, 14a) lie opposite one another in coupled state of the panel bodies (A, B) and are distanced from one another, so that a viewing area (17) of the tongue (3a) can be discerned between the front faces (14, 14a).
11. Method for cladding a sealing or inclined wall area with at least two panels (1, 1a) according to one of the preceding claims, wherein first the first panel (1) is disposed in its installation position, in that it is fixed with at least one fixing means (5, 5a) at the ceiling or wall area (C), whereafter the second panel (1a) is at least partially pushed in with its tongue (3, 3a) into the groove (4) of the already fixed first panel (1), characterised in that the second panel (1a) in its at least partially pushed in state is pivoted around the longitudinal direction (X) of the tongue-and-groove connection into a latching position (Z1), so that the latching means (6, 6a) are brought at least sectionally into engagement with one another, whereby the second panel (1a) is held at the already fixed first panel (1).
12. Method according to claim 11, characterised in that the second panel (1a) is pivoted out of the latching position (Z1) into an installation position (Z2) around the longitudinal direction (X) of the tongue-and-groove connection, as a result of which the latching means (6, 6a) are distanced from one another now that their holding function has been lifted.
13. Method according to claim 12, characterised in that the second panel (1a) in its installation position (Z2) until the complete formation of the tongue-and-groove connection is stored in perpendicular direction (Y) onto the first panel (1), so that the panels (1, 1a) are loosely coupled with one another.
14. Method according to claim 12 or 13, characterised in that the second panel (1a) is fastened at its longitudinal edge (2, 2a) lying opposite the tongue-and-groove connection, with at least one further fixing means (5, 5a) at the ceiling or wall area (C).

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