[0001] The present invention relates to a modular counter-frame for disappearing sliding
doors and relevant kit and assembling method.
[0002] More specifically, the invention concerns to a counter-frame that can be divided
into modular parts, which has been particularly studied and realised to be easily
transported and easily installed, particularly in plasterboard walls.
[0003] As it is well known, disappearing sliding doors are widely used in the building field,
said doors having a counter-frame, provided with a box, realising a space, and with
sliding means, so as to take a first opening position, in which it is fully or partially
inserted within said space, and a closure position, in which it is outside said space.
Usually said box replaces a portion of the wall on which said sliding door is installed.
[0004] It is also known in the above field that plasterboard walls are always more diffused.
In order to realise a plasterboard wall, it is usually provided a first horizontal
guide, having a "U" shaped cross-section on the floor, along the line on which it
is wished realising the wall, with its concavity faced upward, and a second "U" shaped
horizontal guide on the ceiling, with its concavity faced downward. Furthermore, a
plurality of uprights, with a "U" shaped cross-section, is provided vertically and
have their ends inserted and coupled, respectively, with said first and second guides.
Usually, said uprights are spaced each other of 60 cm. Finally, plasterboard panels
are fixed to said guides and to uprights by self-threading screws, to be then stuccoed
and finished.
[0005] A needing of those installing plasterboard walls is that of installing disappearing
sliding doors within plasterboard walls. Furthermore, it is also felt the needing
of reducing installation and transportation costs.
[0006] First solution providing a standard counter-frame requires a high precision when
realising the opening for positioning the counter-frame. This obviously increases
time required for realising plasterboard walls and for installing the door.
[0007] Further, the above counter-frames are sold packaged, each packaging containing a
box, sliding transverse bars and suitable members for permitting sliding of the wing.
However, they are well known in this field limits due to dimensions of said packaging.
This creates remarkable transportation problems and increases total costs of counter-frame,
as well as logistic complications.
[0008] It is also known in this field a wall structure for sliding doors described in Italian
patent n°
1.277.197, concerning a perimeter frame on which it is possible fixing the structure walls,
so as to define a space for inserting the sliding wall, and longitudinal elements
that can be fixed to the frame, comprising adhesive means, such as a bi-adhesive band,
for fixing said walls for keeping them before fixing the same to said frame.
[0009] If, on one side, the above solution overcomes the packaging dimension problems, on
the other side it has the technical problem of being very difficult to install, not
being a real counterframe that can be inserted within the wall, but only a frame on
which the containment space can be realised, and for coupling the sliding guide for
a sliding door. Therefore, the whole installation is even more complex and slow.
[0010] Counter-frame kit available has different installation problems, particularly when
coupling of different parts, which are often fixed not precisely, thus not ensuring
a proper manufacturing.
[0011] Finally, it must also be taken into consideration that at present different measures
exit for wings of sliding doors. Therefore, it would be suitable having a kit suitable
to wings having different sizes.
[0012] In view of the above, it is object of the present invention that of suggesting a
modular counter-frame for disappearing sliding doors that can overcome the above technical
problems.
[0013] Particularly, it is main object of the invention that of suggesting a modular counterframe
that can be precisely mounted, easily transported and easily installed.
[0014] It is further object of the present invention that of suggesting a counter-frame
that can be precisely conformed to the dimensions of different wings.
[0015] It is therefore specific object of the present invention a modular counter-frame
for disappearing sliding doors, of the type that can be installed in an opening of
a wall, comprising a base crossbeam, an upper crossbeam arranged parallel with respect
to said base crossbeam, two or more pairs of uprights, to which wall panels are fixable
by fixing means, such as screws and like, each upright of each pair being faced and
spaced with respect the upright of the same pair and coupled with said base crossbeam
and with said upper crossbeam, the assembly of said pairs of uprights, said base crossbeam
and said upper crossbeam defining a sliding cavity for a wing, and a linear sliding
guide inserted within said upper crossbeam in such way that the ends of said sliding
guide extend out from it, wherein sliding means, such as carriages are moving, couplable
with said wing,
characterized in that said base crossbeam and said upper crossbeam have respectively a "U" shaped and an
inverted "U" shaped cross section and comprise coupling elements on the lateral walls
of said two or more pairs of uprights, and in that said uprights are couplable by
snap-fit coupling with said coupling means of said upper crossbeam.
[0016] Always according to the invention, each one of said uprights is realized by two or
more vertical grooves and provides on each end at least one slot, that is made in
the re-entering portion between the said grooves, and each coupling element of said
upper crossbeam comprises two or more folded tabs, arranged projected outwardly with
respect to said lateral walls and each one capable of inserting in one corresponding
groove, one or more insertion tongues with a funnel-shaped end coupling with seats
arranged in the re-entering portions at the sides of the respective upright and at
least one insertion and blocking tongue comprising an elastically preloaded notching,
said insertion and blocking tongue coupling with the re-entering portion between said
grooves and said elastically preloaded notching coupling with said slot.
[0017] Still according to the invention, said uprights can be snap-fit coupled with said
coupling elements of said base crossbeam.
[0018] Advantageously, according to the invention, each one of said uprights has, on each
one of its ends, at least a slot, obtained in the re-entering portion between said
grooves, and each coupling element of said base crossbeam comprises two or more folded
tabs, arranged projected outwardly with respect to said lateral walls and each one
capable of inserting in one corresponding groove, one or more insertion tongues with
a funnel-shaped end, coupling with seats arranged in the re-entering portions at the
sides of the respective upright and at least one insertion and blocking tongue comprising
an elastically preloaded notching, said insertion and blocking tongue coupling with
the re-entering portion between said grooves and said elastically preloaded notching
coupling with said slot.
[0019] Furthermore, according to the invention, said base crossbeam can be provided with
threaded pins, to which said uprights can be fixed by nuts, and each one of said uprights
can have a plurality of notchings along its lower portion, along which said uprights
can be cut to adjust their length, said notchings being provided at different heights,
and a plurality of hole groups, each hole groups being placed at different heights
in correspondence of each notching, said threaded pins being able to be inserted within
said holes of said base crossbeam, to which they can be fixed by nuts.
[0020] Always according to the invention, said counter-frame can comprises means for coupling
with said wall, said coupling means comprising one or more fixation bridges, slidably
inserted on said sliding guide and fixed to the same by fixation means, such as screws
and like, and at least one fixation square fixed to an end of said sliding guide by
fixation means, such as screws and like.
[0021] Still according to the invention, said upper crossbeam comprises a reference tooth,
and said sliding guide is provided with: reference marks on the surface, for adjusting
its length according to the measurement of the width of the wing to be installed within
said counter-frame and/or according to the installation of said counter-frame for
a single or double wing door; and a notch with which said reference tooth interferes,
so as to set the reciprocal final assembly position of said sliding guide with said
upper crossbeam.
[0022] Furthermore, according to the invention, said counter-frame comprises thickness elements
made of plastic material coupled with each side of said sliding guide, arranged so
that the width of the portion of the sliding guide not inserted in said upper crossbeam
is substantially equal to the overall width of said wall.
[0023] Advantageously, according to the invention, said base crossbeam is selected among
one of the following groups: said base crossbeam has a length substantially equal
to the length of said upper crossbeam; said base crossbeam has a length greater than
the length of said upper crossbeam, said length being eventually adjustable by cutting
on the basis of the width of the wing to be installed within said counter-frame.
[0024] Always according to the invention, said counter-frame is couplable with a further
counter-frame arranged opposed for realizing double wing doors, the ends of the respective
sliding guides of said counterframes being fixed each other by coupling means, such
as bars.
[0025] It is further object of the present invention, a modular counter-frame as defined
in the above,
characterized in that it comprises: at least one base crossbeam; at least one upper crossbeam; two or more
pairs of uprights; at least one sliding guide; and coupling means such as one or more
fixation bridges and one or more fixation squares.
[0026] Still according to the invention, said kit comprises at least one rod, provided with
reference marks.
[0027] It is also an object of the present invention, a method for assembling a disappearing
sliding door comprising a counter-frame as defined in the above
characterized in that it comprises the following steps: arranging said base crossbeam and said upper crossbeam
; coupling said uprights with said base crossbeam and with said upper crossbeam by
snap-fit coupling; cutting said sliding guide and inserting the same within said upper
crossbeam; providing a rod provided with reference marks adjusting its length by cutting,
eventually coupling a square to an end of said rod, inserting said rod between said
uprights in said cavity and fixing said rod to said uprights preferably to the profiles
fixed to the pair of uprights which define the entrance of said cavity; fixing said
counter-frame to said wall by said coupling means; fixing the wall panels, preferably
plasterboard panels, to said uprights by fixing member, like screws and like; removing
said rod; and coupling a wing with said sliding means of said sliding guide.
[0028] Always according to the invention, said method wherein said wall comprises horizontal
guides and vertical rods for fixing to them further wall panels, preferably plasterboard
panels, can comprises the following further step: arranging said base crossbeam so
as to superimpose on the same at least partially said horizontal guide of said wall
arranged on the floor.
[0029] Still according to the invention, said method can comprise the following further
step: cutting possible exceeding length of said base crossbeam on the basis of the
dimensions of the wing employed.
[0030] The present invention will be now described for illustrative but not limitative purposes,
according to its preferred embodiments, with particular reference to the figures of
the enclosed drawings, wherein:
figure 1 shows an exploded view of the modular counter-frame according to the invention;
figure 2 shows a perspective vied of a counter-frame according to figure 1, fully
assembled;
figure 3 shows a front view of a counterframe according to figure 2;
figure 4 shows a particular of a base cross-beam of counter-frame according to the
invention;
figure 5 shows a particular of an upper cross-beam of counter-frame according to the
invention;
figure 6 shows a portion of a sliding guide of the counter-frame according to the
invention;
figure 7 shows a particular of a fixing bridge of the counter-frame according to the
invention;
figure 8 shows a counter-frame according to the invention installed within the space
of a wall;
figure 9 shows a pair of counter-frames according to the invention for a double-wing
door;
figure 10 shows a double-wing door of figure 9 installed;
figure 11 shows coupling bars of counter-frames of figure 9;
figure 12 is an exploded view of a further embodiment of a modular counter-frame according
to the invention;
figure 13 shows some particulars of figure 12;
figure 14 shows a perspective view of counter-frame of figure 12 mounted; and
figure 15 shows particulars of figure 14.
[0031] Similar parts will be indicated in the various figures by the same reference numbers.
[0032] Making reference to figures 1-3, it is possible observing a modular counter-frame
1 for a disappearing sliding door (wing is not shown in the figures) to be installed
within a space obtained in a wall (not shown in the figure. In case of plasterboard
walls, the space can be realised by a first horizontal guide on the floor, possibly
a second horizontal guide fixed to the ceiling, and a plurality of vertical uprights,
the ends of which are inserted in, and coupled to, said first and second guides. Plasterboard
panels are fixed to said guides and to the uprights by self-threading screws, before
the finishing.
[0033] Modular counter-frame 1 mainly comprises a base crossbeam 20, an upper crossbeam
30, two pairs of uprights 40 and a sliding guide 50. Structure of counter-frame 1
will be described in the following, also following the main mounting steps.
[0034] Base crossbeam 20 has a "U" shaped cross section, and it can be placed on the floor,
while upper crossbeam 30 has an inverted "U" cross section, and it is substantially
parallel with respect to the base crossbeam 20. Concavity of said base crossbeam 20
and of said upper crossbeam 30 are faced each other. Each one of said uprights 40
is coupled at the ends of base crossbeam 20 and to the upper crossbeam 30.
[0035] Uprights 40 are secrion bars, preferably realised by forming. They can couple with
lateral walls 21 and 31, respectively, of said base crossbeam 20 and of said upper
crossbeam 30, by snap-fit with suitable coupling elements, respectively indicated
by reference numbers 22 and 32.
[0036] Figures 4 and 5 show in detail said coupling elements 22 and 32, respectively, of
said base crossbeam 20 and of said upper crossbeam 30, which, in the present embodiment
are the same; therefore, only the coupling element of said base crossbeam 20 will
be described in detail. Particularly, said coupling element 22 comprises a pair of
folded tabs, projecting outward with respect to said lateral walls 21, that can be
inserted into corresponding vertical grooves 43 of said uprights, so as to prevent
that the latter can move from the wished position. Said coupling element 22 also comprises
a pair of insertion tongues 24 with a funnel shape, coupling with seats realised in
re-entering parts aside the upright 40, and an insertion and blocking tongue 25, also
comprising an elastically preloaded notching 26, suitable to enter in a corresponding
slot 41 realised on upright 40 surface, in the re-entering portion between the two
grooves 43, so as to block upright in position once inserted and coupled with the
coupling element 22.
[0037] Once coupled uprights 40, said base crossbeam 20, said upper crossbeam 30 and said
uprights 40 define a space 60 that can receive a wing.
[0038] Profili 42 are fixed, by screws, on the uprights 40 defining entrance of space 60
for inserting the wing, and namely on their leading edges.
[0039] Sliding guide 50, realised as well by extrusion, defines an inner channel 51, within
which carriages (not shown in the figures) can be inserted, to which a wing is coupled,
so that the latter can slide to enter/exit from space 60.
[0040] Sliding guide 50, made up of a section bar, preferably realised by extrusion, can
be sliding inserted in said upper crossbeam 30. The latter has a reference tooth 37,
that can interfere with a corresponding notch (not shown in the figures) obtained
on said sliding guide 50, so as to determine final position of each one of the parts.
[0041] Sliding guide 50 is also provided with reference notches 52, for adjusting its length
according to the width of the wing employed (e.g. for a size standard set of 80 cm,
90 cm and 100 cm), and on the basis of installation of counter-frame 1 for a single-
or double-wing door. By said reference notches 52, an operator can properly cut sliding
guide 50 by a standard cutting tool (not shown in the figures). Thus, when reference
tooth 37 interferes with said notch, said space 60 defined by said base crossbeam
20, by said upper crossbeam 30 and by uprights 40, besides by the opening of wall
in which counter-frame 1 is installed, is already conformed to the wing size.
[0042] At the sliding end of sliding guide 50 (reference is made also to figure 6), fixing
square elements 53 are coupled by screws or like, also suitable to permit fixing of
counter-frame 1 with said front opening. Further, square element 53 coupling with
the eventually cut end for adapting the sliding guide to the wing size, also permits
compensating possible imprecision due to the same cutting.
[0043] One or more fixing bridge 54 (see also figure 7) are sliding coupled, and then fixed,
to said sliding guide 50, and are also suitable to fixing of counter-frame 1 to the
opening edge wherein installing counter-frame 1.
[0044] Finally, once inserted the sliding guide 50 in upper crossbeam 50, plastic thicknesses
5 that can be suitably cut, are coupled to each side of said sliding guide 50. Said
thicknesses 55 substantially make width of sliding guide 50 portion not inserted within
upper crossbeam 30 equal to the whole width of wall.
[0045] As it can be noted from figures, base crossbeam 20 is larger than upper crossbeam
30. As it will be clearer in the following, this is useful for an alternative mounting
of counter-frame 1. In any case, said base crossbeam 20 can, with respect to the upper
crossbeam 30:
- have the same length;
- be longer, being it necessary adapting its length by cutting the possible exceeding
part, to the dimension of the specific wing;
- be longer and partially juxtaposed to the horizontal guide on the floor of the plasterboard
wall. This opportunity also permits a higher precision when realising the whole plasterboard
wall within which the door is inserted.
[0046] Before installing the counter-frame 1, it is also provided a rod 70. Length of the
latter is adjusted on the basis of the wing width by reference notches 71, by which
operator cuts the possible exceeding part. A fixing square element is preferably coupled
to the end 72 of said rod 70. Then, said rod 70 is inserted, as shown in the figure,
within space 60 and fixed to section bars 42 by two holes realised on the same.
[0047] Then, it is possible installing counter-frame 1. Particularly, making reference to
figure 8, operator realising plasterboard wall makes opening A perimeter for counter-frame
by horizontal guides 81 and uprights 82 (to which panel 83 will be coupled). Then,
counter-frame 1 is placed within opening A, fixing it by fixing square elements 53,
bridges 54 and possible square element fixed to rod 70. Said rod 70 keeps fixed distance
between uprights 40 in a point which is substantially at half of their length. Thus,
when plasterboards panels are fixed to uprights 40 by self-threading screws, their
flexion is prevented. After fixing of plasterboards panels to uprights 40, rod 70
is removed.
[0048] Figures 12 - 15 show a further embodiment of modular counter-frame 1 according to
the invention, providing only the upper crossbeam 30, the uprights of which couple
by snap-fit coupling described in the above, while at the bottom it is provided an
"U" shaped base crossbeam 20', provided with threaded pins 27, to which said uprights
can be fixed by nuts 27'.
[0049] In the present embodiment, uprights 40 have laterally, and in their lower portion,
a plurality of notches 45 at different heights, for adjusting cutting, and a plurality
of holes groups 44, each hole group 44 being placed at different heights, in correspondence
of each notch 45. Said threaded pins 27 of said base crossbeam 20' is can enter within
each one of said hole groups 44.
[0050] By said embodiment, it is possible adjusting length of said uprights 40. Particularly,
it is sufficient cutting said uprights 40 along said notches 45, in order to select
the (same) measure of all the uprights 40, fixing each upright 40 to the threaded
pins 27 of the "U" shaped base crossbeam 20', inserting said threaded pins 27 within
holes 44 of the corresponding upright 40 and screwing nuts 27' on said threaded pins
27.
[0051] Thus, it is possible easily adjusting height of modular counterframe 1.
[0052] As it can be noted, counterframe 1 according to the invention can be mounted to be
then inserted within opening A of a wall. However, it is also possible assembling
counterframe 1 and the inserting the same within the wall while the same is realised.
For example, while installer places horizontal guide on the floor, it is possible
juxtaposing the latter to the base crossbeam 20, coupling them, thus limiting the
risk of misalignment of the wall. Only then it will be placed and fixed the upper
horizontal guide to counterframe 1, to define opening A. In other words, it is first
assembled counterframe 1, and then the wall.
[0053] Making reference to figures 9 - 11, it is observed that counterframe 1 according
to the invention is also prepared for installation of double wing doors, so that two
counterframes 1 are provided opposed each other, and coupled at the ends of the relevant
sliding guides 50 by bars 56 that can be fixed by suitable screws without passage
interruption of the sliding guides.
[0054] The present invention has been described for illustrative, but not limitative purposes,
according to its preferred embodiments, but it is to be understood that variations
and/or modification can be introduced by those skilled in the art without departing
from the relevant scope, as defined in the enclosed claims.
1. Modular counter-frame (1) for disappearing sliding doors, of the type that can be
installed in an opening (A) of a wall, comprising
a base crossbeam (20),
an upper crossbeam (30) arranged parallel with respect to said base crossbeam (20:
20'),
two or more pairs of uprights (40), to which wall panels (83) are fixable by fixing
means, such as screws and like, each upright (40) of each pair being faced and spaced
with respect the upright (40) of the same pair and coupled with said base crossbeam
(20) and with said upper crossbeam (30), the assembly of said pairs of uprights (40),
said base crossbeam (20) and said upper crossbeam (30) defining a sliding cavity (60)
for a wing, and
a linear sliding guide (50) inserted within said upper crossbeam (30) in such way
that the ends of said sliding guide (50) extend out from it, wherein sliding means,
such as carriages, are moving couplable with said wing,
characterized in that
said base crossbeam (20) and said upper crossbeam (30) have respectively a "U" shaped
and an inverted "U" shaped cross section and comprise (21, 31) coupling elements (22,
32) on the lateral walls of said two or more pairs of uprights (40),
and in that said uprights (40) are couplable by snap-fit coupling with said coupling means (22,
32) of said upper crossbeam.
2. Counter-frame (1) according to claim 1, characterized in that each one of said uprights (40) is realized by two or more vertical grooves (43) and
provides on each end at least one slot (41), that is made in the re-entering portion
between the said grooves (43),
and in that each coupling element (22, 32) of said upper crossbeam comprises two or more folded
tabs (23, 33), arranged projected outwardly with respect to said lateral walls (21,
31) and each one capable of inserting in one corresponding groove (43),
one or more insertion tongues (24, 34) with a funnel-shaped end coupling with seats
arranged in the re-entering portions at the sides of the respective upright (40) and
at least one insertion and blocking tongue (25, 35) comprising an elastically preloaded
notching (26, 36), said insertion and blocking tongue (25, 35) coupling with the re-entering
portion between said grooves (43) and said elastically preloaded notching (26, 36)
coupling with said slot (41).
3. Counter-frame (1) according to anyone of the preceding claims, characterized in that said uprights (40) is snap-fit coupled with said coupling elements (22) of said base
crossbeam (20).
4. Counter-frame (1) according to claim 3, characterized in that each one of said uprights (40 have, on each one of its ends, at least a slot (41),
obtained in the re-entering portion between said grooves (43),
and in that each coupling element (22) of said base crossbeam (40) comprises
two or more folded tabs (23), arranged projected outwardly with respect to said lateral
walls (21) and each one capable of inserting in one corresponding groove (43),
one or more insertion tongues (24) with a funnel-shaped end, coupling with seats arranged
in the re-entering portions at the sides of the respective upright (40) and at least
one insertion and blocking tongue (25) comprising an elastically preloaded notching
(26), said insertion and blocking tongue (25) coupling with the re-entering portion
between said grooves (43) and said elastically preloaded notching (26) coupling with
said slot (41).
5. Counter-frame (1) according to claim 1 or 2, characterized in that
said base crossbeam (20') can be provided with threaded pins (27), to which said uprights
(40) can be fixed by nuts (27'), and
each one of said uprights (40) have a plurality of notchings (25) along its lower
portion, along which said uprights (40) can be cut to adjust their length, said notchings
(45) being provided at different heights, and a plurality of hole groups (44), each
hole groups (44) being placed at different heights in correspondence of each notching
(45), said threaded pins (27) being able to be inserted within said holes (44) of
said base crossbeam (20'), to which they can be fixed by nuts (27').
6. Counter-frame (1) according to anyone of the preceding claims, characterized in that it comprises means (53, 54) for coupling with said wall, said coupling means (53,
54) comprising one or more fixation bridges (54), slidably inserted on said sliding
guide (50)and fixed to the same by fixation means, such as screws and like, and at
least one fixation square (53) fixed to an end of said sliding guide (50) by fixation
means, such as screws and like.
7. Counter-frame (1) according to anyone of the preceding claims,
characterized in that said upper crossbeam (30) comprises a reference tooth (37), and said sliding guide
(50) is provided with:
- reference marks (52) on the surface, for adjusting its length according to the measurement
of the width of the wing to be installed within said counter-frame (1) and/or according
to the installation of said counter-frame (1) for a single or double wing door; and
- a notch with which said reference tooth (37) interferes, so as to set the reciprocal
final assembly position of said sliding guide (50) with said upper crossbeam (30).
8. Counter-frame (1) according to anyone of the preceding claims, characterized in that it comprises thickness elements (55) made of plastic material coupled with each side
of said sliding guide (50), arranged so that the width of the portion of the sliding
guide (50) non inserted in said upper crossbeam (30) is substantially equal to the
overall width of said wall.
9. Counter-frame (1) according to anyone of the preceding claims,
characterized in that said base crossbeam (20) is selected among one of the following groups:
- said base crossbeam (20) has a length substantially equal to the length of said
upper crossbeam (30);
- said base crossbeam (20) has a length greater than the length of said upper crossbeam
(30), said length being eventually adjustable by cutting on the basis of the width
of the wing to be installed within said counter-frame (1).
10. Counter-frame (1) according to anyone of the preceding claims, characterized in that it is couplable with a further counter-frame (1) arranged opposed for realizing double
wing doors, the ends of the respective sliding guides (50) of said counterframes (1)
being fixed each other by coupling means, such as bars (56).
11. Kit of a modular counter-frame (1) as defined in preceding claims,
characterized in that it comprises:
- at least one base crossbeam (20; 20');
- at least one upper crossbeam (30);
- two or more pairs of uprights (40);
- at least one sliding guide (50); and
- coupling means (53, 54) such as one or more fixation bridges (54) and one or more
fixation squares (53).
12. Kit according to claim 11, characterized in that it comprises at least one rod (70), provided with reference marks (71).
13. Method for assembling a disappearing sliding door comprising a counter-frame (1) as
defined in claims 1-10,
characterized in that it comprises the following steps:
- arranging said base crossbeam (20) and said upper crossbeam (30);
- coupling said uprights (40) with said base crossbeam (20) and with said upper crossbeam
(30) by snap-fit coupling;
- cutting said sliding guide (50) and inserting the same within said upper crossbeam
(30);
- providing a rod (70) provided with reference marks (71) adjusting its length by
cutting, eventually coupling a square to an end of said rod (70), inserting said rod
(70) between said uprights in said cavity (60) and fixing said rod (70) to said uprights
(40) preferably to the profiles (42) fixed to the pair of uprights (40) which define
the entrance of said cavity (60);
- fixing said counter-frame to said wall by said coupling means (53, 54);
- fixing the wall panels, preferably plasterboard panels, to said uprights (40) by
fixing member, like screws and like;
- removing said rod (70); and
- coupling a wing with said sliding means of said sliding guide (50).
14. Method according to claim 13, wherein said wall comprises horizontal guides and vertical
rods for fixing to them further wall panels, preferably plasterboard panels,
characterized in that it comprises the following further step:
- arranging said base crossbeam (20) so as to superimpose on the same at least partially
said horizontal guide of said wall arranged on the floor.
15. Method according to anyone of claims 13 or 14,
characterized in that it comprises the following further step:
- cutting the eventual exceeding length of said base crossbeam (20) according to the
dimension of the employed wing.