Pre-frame for a device for obstructing the opening of the facade of a building thermally insulated from the outside

Abstract

The invention relates to a pre-frame (10) for a device (4) for obstructing a facade opening of a building intended to be thermally insulated from the outside, the pre-frame comprising an upper crosspiece (12) and two lateral uprights (13, 14) mechanically connected to the latter, delimiting an interior space of the pre-frame, the pre-frame thus formed comprising a rear wall (16) and a front wall (17) extending opposite one another, and a central portion (18) connecting them, the pre-frame being configured to be mechanically fixed to the panels and / or to the lintel of the facade opening by its central portion, its front wall being configured to receive a thermal insulation panel (11); the pre-frame being further configured to receive in its interior space a frame (5) of said obstruction device, so that the pre-frame is arranged between on the one hand the panels and the lintel of the opening and on the other hand the frame of the obstruction device.figure for the abstract: figure 1.

Description

Title of the invention: Pre-frame for a device for obstructing the opening of the facade of a building thermally insulated from the outside TECHNICAL FIELD OF THE INVENTION

[0001] The field of the invention is that of devices for obstructing openings in facades, in particular in buildings intended to be thermally insulated from the outside. The invention relates in particular to the obstruction of openings such as windows, doors and French windows.

[0002] More specifically, the invention relates to a pre-frame for a device for obstructing the opening of the facade of a building thermally insulated from the outside.

[0003] The invention also relates to an assembly comprising such a pre-frame and an obstruction device, as well as a building comprising such a pre-frame and an obstruction device.

[0004] The invention further relates to the use of such a pre-frame in a building.

[0005] Furthermore, the invention relates to a method of installing an obstruction device in such a pre-frame, as well as a method of renovating a building comprising an obstruction device installed in such a pre-frame.

[0006] The invention finds applications in particular in the field of construction, whether for residential, industrial or tertiary use in particular. The invention finds a particular application in the field of external thermal insulation of buildings, whether in construction or renovation. STATE OF THE ART

[0007] External Thermal Insulation (ETI) is a high-performance technique for insulating buildings, which involves applying a layer of insulation to the exterior walls of a building. This step can be followed by the application of a decorative and protective coating. ETI helps to improve the energy efficiency of the building by limiting heat loss, while improving interior comfort and enabling significant energy savings.

[0008] This technique is suitable for both new construction projects and for facade renovations, i.e. for renovation projects.

[0009] In general, VITE involves installing insulating panels on the exterior walls of a building. The insulating panels are most often made of expanded polystyrene (EPS), which is a lightweight, economical and easy-to-handle material. These panels are generally fixed to the walls with mechanical fasteners and / or by gluing.

[0010] LTTE results in the increase in the thickness of the walls, which has the effect of limit heat loss in winter and prevent heat from entering the building in summer.

[0011] It is known that approximately 20% of heat loss from a building occurs through the walls and approximately 15% through the windows.

[0012] Thus, it is generally recommended to combine the insulation of facades with the installation of energy-efficient joinery, such as windows, doors and French windows (or the replacement of less efficient joinery with these) as well as the installation of efficient joinery obstruction devices (or the replacement of less efficient obstruction devices with these).

[0013] Various types of obstruction devices are known for totally or partially obstructing openings in facades, particularly in buildings, such as windows, doors and French windows.

[0014] On the one hand, there are sliding obstruction devices, for example sliding shutters, sliding folding panels, sliding folding shutters, etc., which can slide along a horizontal direction.

[0015] There are also swinging obstruction devices, such as swinging shutters which can pivot around a vertical axis.

[0016] Finally, there are also obstruction devices called roller shutters, made up of slats that can be rolled around a horizontal axis.

[0017] Known obstruction devices generally comprise fixed elements, such as a frame, and movable elements on the fixed elements, such as blades, allowing the obstruction to be varied.

[0018] There are mainly two known techniques for installing joinery and an obstruction device on a facade insulated from the outside.

[0019] A first installation technique involves fixing the joinery in the opening of the facade, followed by fixing the obstruction device either also in the opening or to the joinery. The installation of insulating panels is then carried out covering the frames of the joinery, and the obstruction device.

[0020] A second installation technique involves fixing the joinery in the opening of the facade, followed by the installation of insulating panels covering the frames of the joinery. The obstruction device is then installed on the insulating panels.

[0021] The first installation technique mentioned above has the significant disadvantage of enclosing the obstruction device with insulating material.

[0022] This makes the removal of the obstruction device, for example for its replacement during renovation or following deterioration, particularly complex, and involves the removal of the insulating material (and possibly the decorative coating).

[0023] The second aforementioned laying technique has the significant disadvantage that the di The dimensions of the obstruction device must be adapted to the resulting dimensions after installation of the insulation panels, which may themselves be of varying thickness. The installation of the insulation panels may also be imprecise or approximate.

[0024] This technique also has the disadvantage of fixing the frame of the obstruction device which is complex, the fixing having to be done through the thickness of the insulating panel into the facade.

[0025] Finally, such an installation technique is dependent on the progress of the facade insulation, which presents a major disadvantage, particularly when the installation of the insulation takes a long time, since the obstruction device can then only be installed long after the installation of the joinery.

[0026] Thus, there is a need for a simple and convenient technique for installing an obstruction device on a facade thermally insulated from the outside. Description of the invention

[0027] The present invention aims to remedy all or part of the drawbacks of the state of the art cited above.

[0028] For this purpose, the invention relates to a pre-frame for a device for obstructing the opening of a facade of a building intended to be thermally insulated from the outside, the pre-frame comprising an upper crosspiece and two lateral uprights mechanically connected to the upper crosspiece, delimiting an interior space of the pre-frame, the pre-frame thus formed comprising a rear wall and a front wall extending opposite one another, and a central portion connecting the front wall and the rear wall, the pre-frame being configured to be mechanically fixed to the panels and / or to the lintel of the facade opening by its central portion, its front wall being configured to receive a thermal insulation panel; the pre-frame being further configured to receive in its interior space a frame of said obstruction device, so that the pre-frame is arranged between on the one hand the panels and the lintel of the opening and on the other hand the frame of the obstruction device.

[0029] The pre-frame makes it possible to install an obstruction device in a facade opening intended to be thermally insulated from the outside without the frame of the obstruction device being made inaccessible by the installation of the thermal insulation.

[0030] Thus, the installation of the pre-frame is also not dependent on the installation of the thermal insulation.

[0031] In particular, the obstruction device can be replaced without removing either the pre-frame or the thermal insulation.

[0032] In addition, the pre-frame has dimensions predefined by the uprights and the crosspiece, which makes it possible to install an obstruction device with predefined dimensions. in the opening.

[0033] This makes it possible to standardize the dimensions of the obstruction devices.

[0034] The pre-frame thus presents numerous advantages, whether in terms of ease of installation and replacement of the obstruction device, as well as the provision of standardized obstruction devices for different opening dimensions.

[0035] Other particularly simple and convenient characteristics of the pre-frame according to the invention are described below.

[0036] - The pre-frame also includes two assembly brackets which each connect mechanically respectively a lateral upright to the upper crosspiece, the assembly brackets being housed between the front wall and the rear wall of the pre-frame and being configured to be covered by the frame of said obstruction device.

[0037] This allows a particularly simple, robust and discreet assembly of the side uprights with the upper crosspiece.

[0038] - The brackets are made of polyamide, and preferably of polyamide 6, known as PA6.

[0039] This ensures good robustness of the brackets and thus of the assembly of the pre-frame.

[0040] - The front wall has a longitudinal notch extending along the uprights side and / or top cross member.

[0041] This allows fixing through the front wall of the pre-frame, through one inclined face of the notch, into the panels and / or lintel of the opening. Such fixing is advantageous when the interior of the side uprights and / or the upper crosspiece is not accessible during assembly.

[0042] - The longitudinal notch comprises at least one face inclined at approximately 45° by relation to the front wall.

[0043] - The front wall has a free longitudinal edge comprising a long chamfer substantially concave horizontal, configured to receive a sealing bead between the pre-frame and said panel of thermal insulating material.

[0044] - The rear wall has a free longitudinal edge comprising a long tab horizontally projecting towards the interior space of the pre-frame.

[0045] This makes it possible to define a maximum axial position stop of the obstruction device on the pre-frame.

[0046] - The pre-frame further comprises at least one wedge for installing the pre-frame in the opening, the installation wedge comprising a groove and the rear wall and / or the central portion each comprises a longitudinal tenon configured to cooperate with the groove of the at least one installation wedge for its fixing on the pre-frame.

[0047] This allows the pre-frame to be correctly positioned in the opening, in particular by adjusting its level and / or its plumb.

[0048] - The pre-frame comprises a plurality of installation wedges, each installation wedge further comprising a tenon opposite the groove and configured to cooperate with the groove of another laying wedge, so as to allow the securing of a plurality of laying wedges to each other.

[0049] - In the pre-frame, on the one hand the longitudinal tenon(s) and / or the tenon of a laying wedge, and on the other hand the groove of a laying wedge together form a dovetail type connection.

[0050] For example, the tenons and the grooves are of complementary shape, for example of trapezoidal shape.

[0051] - The upper crosspiece and the side uprights are made of polyvinyl chloride, called PVC.

[0052] Thus, the pre-frame is shock-resistant, does not yellow, can be UV-treated, is rot-proof, and can be made of recycled and recyclable PVC material.

[0053] - The upper cross member and the side uprights have a cross section square, preferably about 45 millimeters on each side.

[0054] Such a dimension is advantageous in combination with a thermal insulation panel of standard thickness of 40 millimeters, so that the interior space of the pre-frame is not covered with thermal insulation.

[0055] According to a second aspect, the invention also relates to an assembly comprising a pre-frame as described above and an obstruction device mounted in the pre-frame.

[0056] According to a third aspect, the invention also relates to a building comprising a facade having an opening, a device for obstructing the opening and a pre-frame as described above, the pre-frame being mounted in the opening and the obstruction device being mounted in the pre-frame.

[0057] For example, the building further comprises external thermal insulation comprising one or more thermal insulation panels covering at least part of the facade, and covering at least part of the front wall of the pre-frame.

[0058] According to a fourth aspect, the invention also relates to the use of a pre-frame as described above in a building, the pre-frame being placed in a facade opening and a frame of an obstruction device being placed in the pre-frame, so that the pre-frame is arranged between, on the one hand, the panels and the lintel of the opening and, on the other hand, the frame of the obstruction device, the front wall of the pre-frame being covered at least partially by a thermal insulation panel.

[0059] According to a fifth aspect, the invention also relates to a method for installing a frame for a device for obstructing a facade opening thermally insulated from the outside, in a pre-frame as described above, comprising the steps of: - assembly of the side uprights and the upper crosspiece to form the pre-frame; then - installation and fixing of the pre-frame in the opening; - installation and fixing of the obstruction device frame on the pre-frame; - at least partial covering of the front wall of the pre-frame with at least one thermal insulation panel.

[0060] According to one embodiment, the pre-frame comprises a longitudinal notch extending along the side uprights and / or the upper crosspiece, the installation and fixing step comprising the step of screwing one or more fixing screws from the longitudinal notch through the front wall and the central portion into the panels and / or the lintel of the opening.

[0061] According to one embodiment, the pre-frame comprises one or more shims for installing the pre-frame in the opening, each installation shim comprising a groove and the rear wall and / or the central portion each comprising a longitudinal tenon configured to cooperate with the groove of the at least one installation shim for fixing it to the pre-frame, the installation and fixing step comprising the step of securing one or more installation shims to the pre-frame to adjust the plumb and level of the pre-frame.

[0062] According to a sixth aspect, the invention also relates to a method for renovating a building comprising a facade having an opening, the building being thermally insulated from the outside by means of at least one thermal insulation panel, and in which a device for obstructing the opening is mounted in a pre-frame as described above, the method comprising the steps of: - removal of only the obstruction device among the obstruction device, the pre-frame and the at least one thermal insulation panel; - fixing a new obstruction device on the pre-frame. BRIEF DESCRIPTION OF THE FIGURES

[0063] Other advantages, aims and particular characteristics of the present invention will emerge from the following non-limiting description of at least one particular embodiment of the devices and methods which are the subject of the present invention, with reference to the appended drawings, in which: • [Fig. 1] is a schematic perspective and sectional view of a building facade thermally insulated from the outside, comprising an opening and a device for obstructing the opening, mounted in a pre-frame which is fixed in the opening; • [Fig.2] is a schematic perspective view of the pre-frame comprising two side uprights and an upper crosspiece; • [Fig.3] is a detailed perspective view of a section of a profile forming the side uprights and / or the upper crosspiece of the pre-frame; • [Fig.4] is a detailed perspective view of sections of two profiles such as as shown in [Fig.3] assembled by means of a bracket; • [Fig.5] is a sectional view of an upright of the pre-frame placed in the opening; • [Fig.6] schematically represents a wedge for installing the pre-frame; • [Fig.7] is a block diagram of a method of installing a device obstruction in a pre-frame; • [Fig.8] is a block diagram of a facade renovation process including an obstruction device mounted in a pre-frame. DETAILED DESCRIPTION OF THE INVENTION

[0064] The present description is given without limitation, each characteristic of an embodiment being able to be combined with any other characteristic of any other embodiment in an advantageous manner.

[0065] It should be noted, from now on, that the figures are not necessarily to scale.

[0066] [Fig.l] schematically represents in perspective and in section a facade 1 of a building thermally insulated from the outside.

[0067] For example, the building is a residential building such as a house or an apartment building.

[0068] The facade 1 comprises an opening 2, which is here a window opening formed in the wall of the facade 1, but which could also be a door opening, a French window, a bay window, or any other type.

[0069] The opening 2 is for example rectangular in shape.

[0070] The facade 1 here comprises joinery placed in the opening 2, however the opening 2 can also be open and not comprise any joinery.

[0071] In the example illustrated, the joinery is a window 3.

[0072] The facade 1 also comprises an obstruction device 4, which is also placed in the opening 2, here on an exterior side of the window 3.

[0073] In the example illustrated, the obstruction device 4 is a shutter which can slide horizontally.

[0074] The obstruction device 4 here comprises a frame 5 comprising an upper rail 6 and a lower rail 7, connected by lateral profiles 8.

[0075] Furthermore, the obstruction device 4 comprises a sliding apron comprising a plurality of blades 9 articulated to each other, and capable of sliding in the upper rail 6 and lower rail 7.

[0076] The obstruction device 4 allows the total or partial obstruction of the opening 2 by total or partial pushing back of the blades 9.

[0077] The obstruction device may however be of any other type, whether it is of the sliding type, for example of the sliding folding panel type, sliding folding shutters, etc., of the hinged type, for example hinged shutters which can pivot around a vertical axis, etc., or of the rolling shutter type, comprising slats which can be rolled around a horizontal axis.

[0078] The facade 1 here comprises a pre-frame 10 placed in the opening 2, in which the obstruction device 4 is mounted.

[0079] In other words, the obstruction device 4, and in particular the frame 5, is mounted in the opening 2 by means of the pre-frame 10.

[0080] In addition, the building has external thermal insulation, known as ITE.

[0081] The ITE is carried out here by means of one or more thermal insulation panels 11, fixed to the exterior of facade 1, for example directly to the wall of facade 1.

[0082] For example, the thermal insulation panels 11 are made of expanded polystyrene (EPS).

[0083] In particular, the panels and the lintel of the opening 2 (i.e. the upper and lateral frame of the opening 2) are also thermally insulated.

[0084] As shown in [Fig.l], the thermal insulation panels 11 at least partially cover the pre-frame 10, in other words the latter is enclosed on the outside by the thermal insulation.

[0085] However, the obstruction device 4 and in particular the frame 5 is not covered by the thermal insulation.

[0086] In other words, the obstruction device 4 is accessible through the opening 2 which is thermally insulated.

[0087] For example, the thermal insulation panels 11 are expanded polystyrene panels, known as EPS.

[0088] For example, the thickness of a thermal insulation panel 11 is approximately 40 millimeters.

[0089] [Fig.2] schematically illustrates the pre-frame 10 taken in isolation.

[0090] The pre-frame 10 comprises an upper crosspiece 12 and two lateral uprights 13 and 14 mechanically connected to the upper cross member 12.

[0091] The upper crosspiece 12 comprises two ends opposite each other, and the side uprights 13 and 14 each also comprise two ends opposite each other.

[0092] The lateral uprights 13 and 14 are each mechanically connected by one of their ends to a separate end of the upper crosspiece 12.

[0093] The pre-frame 10 may comprise at least two brackets 15 (shown in broken lines in [Fig.2]), which mechanically connect each of the lateral uprights 13 and 14 to the upper crosspiece 12.

[0094] The pre-frame 10 thus has a general shape that is substantially U-shaped, and which is here arranged in an inverted manner in the opening 2 in [Fig.l].

[0095] The lateral uprights 13 and 14 and the upper crosspiece 12 together delimit an interior space 19 of the pre-frame, corresponding to the interior of the general substantially U-shape of the pre-frame.

[0096] Each of the side uprights 13 and 14 and the upper crosspiece 12 comprises a so-called rear wall, a so-called front wall and a central portion connecting the rear wall and the front wall.

[0097] The pre-frame 10 itself comprises a rear wall 16, a front wall 17 and a central portion 18 connecting the rear wall 16 and the front wall 17, formed respectively by the rear walls, the front walls and the central portions of the lateral uprights 13 and 14 and the upper crosspiece 12.

[0098] Referring to [Fig.2], the profiles forming the lateral uprights 13 and 14 and the upper crosspiece 12 each comprise a rear wall 16a, respectively 16b, respectively 16c, a front wall 17a, respectively 17b, respectively 17c and a central portion 18a, respectively 18b, respectively 18c connecting their front wall and their rear wall.

[0099] The rear walls 16a, 16b and 16c together form the rear wall 16 of the pre-frame 10, the front walls 17a, 17b and 17c together form the front wall 17 of the pre-frame 10, and the central portions.

[0100] As can be seen in [Fig.l] in particular, the pre-frame 10 is configured to be mechanically fixed to the panels and / or to the lintel of the opening 2 by its central portion 18.

[0101] The rear wall 16 of the pre-frame 10 is thus oriented opposite the opening 2, and here the window 3.

[0102] The front wall 17 of the pre-frame 10 is oriented towards the outside of the facade 1.

[0103] The front wall 17 of the pre-frame 10 is configured to be covered at least by partially by at least one thermal insulation panel 11.

[0104] In particular, the front wall 17 is configured to receive at least part of the thermal insulation without the thermal insulation protruding inside the interior space 19 of the pre-frame 10.

[0105] For example, the width of the front wall 17 is approximately 45 millimeters, while the thickness of the thermal insulation panel 11 is approximately 40 millimeters.

[0106] The lateral uprights 13 and 14 and the upper crosspiece 12 are here formed by profiles of the same type.

[0107] The profiles may have a substantially square cross-section, for example approximately 45 millimeters on each side.

[0108] For example, the profiles are made of Polyvinyl Chloride, known as PVC.

[0109] The profiles are preferably obtained by extrusion.

[0110] In particular, the profiles can be honeycombed.

[0111] With reference to Figures 3 to 5, an example of the geometry of a profile forming the lateral upright 14 is described below, it being understood that such a profile can also form the lateral upright 13 and / or the upper crosspiece 12 (the references bearing the letter “b” below are then to be replaced by identical references followed by “a” and “c”, respectively).

[0112] As described above, the profile forming the side upright 14 comprises a rear wall 16b, a front wall 17b and a central portion 18b.

[0113] In the example illustrated, the rear wall 16b and the front wall 17b each comprise a free longitudinal edge 20, respectively 21, and a longitudinal edge 22, respectively 23, opposite the free longitudinal edge 20, respectively 21.

[0114] The central portion 18b connects the longitudinal edge 22 of the rear wall 16b and the longitudinal edge 23 of the front wall 17b.

[0115] The cross-section of the profile thus has a substantially U-shape.

[0116] The U-shape may in particular be inscribed in a substantially square shape, that is to say that the lateral uprights and / or the upper crosspiece have a cross-section of a generally square external shape.

[0117] In particular, the opening of the U shape is turned towards the interior space 19 of the pre-frame 10.

[0118] The rear wall 16b has an outer face 161b, oriented towards the outside of the pre-frame 10 and configured to be oriented opposite the opening 2 and in particular opposite the window 3, and an inner face 162b, oriented towards the inside of the U-shape.

[0119] The rear wall 16b further has, at its free longitudinal edge 20, an end face 163b, oriented towards the interior space 19 of the pre-frame 10 and configured to be oriented towards the frame 5 of the obstruction device 4,

[0120] The front wall 17b has an outer face 171b, oriented towards the outside of the pre-frame 10 and configured to be oriented towards the outside of the building and in particular towards the thermal insulation panel 11, and an inner face 172b, oriented towards the inside of the U-shape.

[0121] The front wall 17b has, at its free longitudinal edge 21, an end face 173b, oriented towards the interior space 19 of the pre-frame 10 and configured to be oriented towards the frame 5 of the obstruction device 4.

[0122] The central portion 18b has an outer face 181b, oriented towards the outside of the pre-frame 10 and configured to be oriented towards the outside of the building and in particular towards a painting and / or the lintel of the opening 2, and an inner face 182b, oriented towards the inside of the U-shape.

[0123] The rear wall 16b comprises, at its free longitudinal edge 20, a longitudinal tongue 24 which is free and which projects towards the interior space 19 of the pre-frame 10.

[0124] In the example illustrated, the longitudinal tongue 24 is formed in the extension of the outer face 161b of the rear wall 16b, and projects from the end face 163b of the rear wall 16b towards the inner space 19 of the pre-frame 10.

[0125] According to a variant, the longitudinal tongue 24 may have an L-shaped section, and project both from the end face 163b of the rear wall 16b towards the interior space 19 of the pre-frame 10, and from the exterior face 161b of the rear wall 16b.

[0126] Furthermore, the front wall 17b comprises a longitudinal notch 25.

[0127] The longitudinal notch 25 is formed in the outer face 171b of the front wall 17b.

[0128] In particular, the longitudinal notch 25 has a substantially V-shaped cross-section.

[0129] The longitudinal notch 25 has in particular an inclined face 26 relative to the front wall 17b, and which is for example inclined at approximately 45° relative to the front wall 17b.

[0130] In particular, here, the inclined face 26 is proximal to the central portion 18b.

[0131] The front wall 17b may be honeycombed at the level of the inclined face 26, and comprise a cell 37 between the front wall 17b and the central portion 18b.

[0132] The cell 37 may comprise two longitudinal partitions 38, which are here substantially parallel to each other and which extend substantially at right angles from the inclined face 26. The longitudinal partitions 38 make it possible in particular to guide a screw for fixing the pre-frame passing through the inclined face 26, as described below.

[0133] The front wall 17b may further comprise, at its free longitudinal edge 21, a longitudinal chamfer 29.

[0134] In the example illustrated, the longitudinal chamfer 29 is formed at the edge between the outer face 171b and the end face 173b of the front wall 17b.

[0135] The longitudinal chamfer 29 is substantially concave in the illustrated example, and more particularly has a section substantially in the shape of a semicircle, without such a shape being limiting.

[0136] The rear wall 16b and / or the central portion 18b may each comprise a longitudinal tenon 27.

[0137] In the example illustrated, the outer face 161b of the rear wall 16b and the outer face 181b of the central portion 18b each have a longitudinal tenon 27.

[0138] The longitudinal tenon 27 has an enlarged head 28 whose section is of substantially trapezoidal shape.

[0139] The outer face 161b, respectively 181b, of the rear wall 16b and / or the portion central 18b, may comprise a longitudinal recess, in which the longitudinal tenon 27 may be formed.

[0140] In the example illustrated, the longitudinal recess on the outer face 161b is formed only on a part of the outer face 161b and opens onto the outer face 181b.

[0141] In the example illustrated, the longitudinal recess on the outer face 181b is formed over substantially the entirety of the outer face 181b.

[0142] The pre-frame 10 may further comprise one or more installation wedges 30, as illustrated in [Fig.6] which shows an installation wedge 30 taken in isolation.

[0143] The installation wedge 30 has a first face 31 and a second face 32 opposite the first face 31.

[0144] The first face 31 is configured to be oriented towards the pre-frame 10 while the second face 32 is configured to be oriented away from the pre-frame 10, towards the facade 1 and / or the window 3.

[0145] The first face 31 comprises a groove 33 having a section whose shape corresponds substantially to the shape of the section of the longitudinal tenon 27.

[0146] In the example illustrated, the section of the groove 33 is of substantially trapezoidal shape.

[0147] The installation wedge 30 can be introduced through its groove 33 onto the longitudinal tenon 27, and be secured to the pre-frame 10.

[0148] Furthermore, the second face 32 of the laying wedge 30 may comprise a tenon 34 having a section whose shape is similar to the shape of the section of the enlarged head 28 of the longitudinal tenon 27.

[0149] In other words, the section of the tenon 34 is of substantially trapezoidal shape.

[0150] Thus, another installation wedge 30 can be introduced by its groove 33 onto the tenon 34 of a first installation wedge 30 secured to the pre-frame 10, and thus in turn be secured to the pre-frame 10.

[0151] Furthermore, the laying wedge 30 may comprise a central opening 35, which is through.

[0152] The central opening 35 is provided to receive a screw for fixing the pre-frame 10, which also makes it possible to maintain the installation wedge 30 in a predefined position.

[0153] The installation wedge 30 is for example made of polyamide, and preferably of polyamide 6, known as PA6.

[0154] The installation wedge 30 has, for example, a thickness of the order of 5 millimeters.

[0155] In addition, the front wall 17b may have an internal shoulder 36.

[0156] For example, the internal shoulder 36 is formed on the inner face 172b by means of a recess and / or an excess thickness of the front wall 17b.

[0157] The internal shoulder 36 forms a positioning stop for the brackets 15, used to secure the side uprights 13 and 14 respectively with the upper crosspiece 12.

[0158] The brackets 15 may have a substantially L-shaped cross-section, as can be seen in [Fig.4] in particular.

[0159] The L shape is preferably conformed to the angle formed by the internal shoulder 36, so that the brackets 15 can be positioned axially and transversely.

[0160] The brackets 15 are preferably housed entirely inside the U shape of the profile.

[0161] In other words, the brackets 15 are thus integrated, that is to say “embedded”, in the profile and thus in the pre-frame 10.

[0162] The frame 5 of the obstruction device 4 can be placed on the longitudinal edges 20 and 21 of the pre-frame 10, covering the opening of the U-shape of the profiles, and thus covering the brackets 15.

[0163] The brackets 15 are for example made of polyamide, and preferably of polyamide 6, known as PA6.

[0164] The operation of the pre-frame 10, that is to say in particular its installation in an opening 2, will now be described in more detail.

[0165] The pre-frame 10 is formed by assembling the lateral uprights 13 and 14 as well as the upper crosspiece 12, for example by means of the brackets 15 described above.

[0166] The pre-frame 10 thus formed is placed in the opening 2, possibly using one or more installation wedges 30 secured to each other, to adjust the plumb and level of the pre-frame 10.

[0167] The pre-frame 10 is fixed by its central portion 18 to the panels and / or to the lintel of the opening 2, for example by means of suitable screws.

[0168] The pre-frame 10 can be fixed in the opening 2 by a plurality of screws passing transversely through the central portion 18 from the interior space 19 of the pre-frame 10 towards the exterior, into the facade 1, as illustrated by the fixing axis XI in [Fig.5].

[0169] In addition or as an alternative, the pre-frame 10 can be fixed by a plurality of screws passing through the inclined face 26 of the longitudinal notch 25 formed on the front wall 17, and passing through the front wall 17 as well as the central portion 18, as illustrated by the fixing axis X2 in [Fig.5].

[0170] When the rear wall 16 is located opposite a portion of facade 1, the pre-frame 10 can also be fixed by a plurality of screws passing through the profile on either side from the front wall 17 to the rear wall 16, as illustrated by the fixing axis X3 in [Fig.5].

[0171] These last two fixing configurations are particularly suitable when the interior of the pre-frame 10 is not accessible during assembly.

[0172] The frame 5 of the obstruction device 4 is then placed in the pre-frame 10.

[0173] In particular, it is provided that the frame 5 of the obstruction device 4 rests on the free longitudinal edge 20, respectively on the free longitudinal edge 21, of the profiles forming the pre-frame 10.

[0174] In other words, the frame 5 rests on the end faces 163a to 163c and 173a to 173c.

[0175] The longitudinal tab 24 makes it possible to axially position the frame 5 by defining a stop position for the frame 5 in the pre-frame 10.

[0176] It should however be specified that the frame 5 is not necessarily in abutment against the longitudinal tongue 24 in a mounting configuration, as illustrated in [Fig.5] in particular.

[0177] The frame 5 is fixed to the pre-frame 10, for example by means of PVC fixing screws, as illustrated by the fixing axis X4 in [Fig.5].

[0178] The front wall 17, and in particular the outer faces 171a, 171b and 171c, receive a thermal insulation panel 11 which covers them.

[0179] Preferably, the longitudinal chamfer 29 is not covered by the thermal insulation, as illustrated in [Fig.5] in particular, and receives a seal or sealing bead (not shown) between the pre-frame 10 and the thermal insulation.

[0180] The invention also relates to a method 200 for installing a frame for a device for obstructing a facade opening thermally insulated from the outside, in a pre-frame, for example as described above.

[0181] [Fig.7] is a block diagram illustrating the method 200.

[0182] The method 200 comprises the following steps:

[0183] - A step 201 of assembling the side uprights 13 and 14 and the crosspiece su upper 12 to form the pre-frame 10.

[0184] - A step 202 of installing and fixing the pre-frame 10 in the opening 2.

[0185] Step 202 may optionally include step 2021 of securing one or more installation wedges 30 to the pre-frame to adjust the plumb and level of the pre-frame 10.

[0186] Step 202 may optionally include step 2022 of fixing the pre-frame 10 in the opening 2 by screwing one or more screws from the inclined face 26 of the longitudinal notch 25 through the front wall 17 and the central portion 18.

[0187] - A step 203 of laying and fixing the frame 5 of the obstruction device 4 on the pre-frame 10.

[0188] - A step 204 of at least partial covering of the front wall 17 of the pre-frame 10 with a thermal insulation panel 11.

[0189] It should be noted that steps 203 and 204 can be reversed, in the event of need.

[0190] - An optional step 205 of laying a sealing cord or joint in the longitudinal chamfer 29.

[0191] The pre-frame 10 makes it possible to install an obstruction device 4 regardless of the progress of the external thermal insulation of the building.

[0192] The dimensions of the opening 2 and the pre-frame 10 are predetermined, thus the dimensions of the obstruction device 4 are also predetermined, without depending on the installation of the external thermal insulation.

[0193] If necessary, the obstruction device 4 can also be installed only when the external thermal insulation has been installed.

[0194] Furthermore, the invention also relates to the renovation of an opening comprising an obstruction device mounted on a pre-frame 10 as described previously, that is to say the replacement of an old obstruction device with a new obstruction device.

[0195] Thus, the invention also relates to a method 300 for renovating a building thermally insulated from the outside comprising a facade having an opening and a device for obstructing the opening mounted in a pre-frame, for example as described above.

[0196] [Fig.8] is a block diagram illustrating the method 300.

[0197] The method 300 comprises the following steps:

[0198] A step 301 of removing only the obstruction device 4 from among the obstruction device 4, the pre-frame 10 and the at least one thermal insulation panel 11.

[0199] A step 302 of fixing a new obstruction device 4 on the pre-frame 10.

[0200] The method 300 thus does not include any step of removing the thermal insulation panel 11 from the front wall 17 of the pre-frame 10, and no step of removing the pre-frame 10 from the opening 2.

[0201] The pre-frame 10 thus allows particularly simple and convenient renovation by removing only the obstruction device 4 from the pre-frame 10.

[0202] According to other variants not illustrated:

[0203] - The building is an industrial or commercial building.

[0204] - The building is a vehicle structure, for example a land vehicle such as than a truck or mobile home, or even a ship for example.

[0205] - The opening is a door opening, garage door opening, French window opening, bay window opening glass, etc.

[0206] - The insulating panels are made of a material other than expanded polystyrene (EPS), for example fiberglass, rock fiber, wood fiber, etc.

[0207] - The pre-frame further comprises a lower crosspiece, connecting the uprights lateral.

[0208] - The pre-frame comprises a lower crosspiece, connecting the side uprights, and does not does not include a top crossbar.

[0209] - The obstruction device is other than sliding, and in particular other than sliding horizontally.

[0210] - The uprights and / or the crosspiece are formed by profiles having a shape of section different from a U-shaped section, for example a closed rectangular section.

[0211] - The uprights and / or the crosspiece are formed by profiles having a geometry different from that described, and in particular do not necessarily include a longitudinal tongue, and / or a longitudinal groove, and / or a longitudinal chamfer, and / or a longitudinal tenon.

[0212] - The profiles are made of a material other than PVC, for example metal or drink.

[0213] - The side uprights and / or the crosspiece are secured to each other by means different from a bracket, for example by screwing, fitting, gluing, welding, etc.

[0214] - The longitudinal tenons of the profiles, and / or the tenons and grooves of the installation wedges have sections of a shape other than trapezoidal, for example any other polygonal shape allowing a mechanical connection to be made.

[0215] It is recalled that the invention is not limited to the examples described and illustrated.

Claims

Claims

1. Pre-frame (10) for a device (4) for obstructing an opening (2) of a facade (1) of a building intended to be thermally insulated from the outside, the pre-frame (10) comprising an upper crosspiece (12) and two lateral uprights (13, 14) mechanically connected to the upper crosspiece, delimiting an interior space (19) of the pre-frame, the pre-frame thus formed comprising a rear wall (16) and a front wall (17) extending opposite one another, and a central portion (18) connecting the front wall and the rear wall, the pre-frame (10) being configured to be mechanically fixed to the panels and / or to the lintel of the opening (2) of the facade by its central portion (18), its front wall (17) being configured to receive a panel (11) of thermal insulation;the pre-frame (10) being further configured to receive in its interior space (19) a frame (5) of said obstruction device (4), so that the pre-frame (10) is arranged between on the one hand the panels and the lintel of the opening (2) and on the other hand the frame (5) of the obstruction device (4).;

2. Pre-frame (10) according to claim 1, further comprising two assembly brackets (15) which each mechanically connect respectively a lateral upright (13, 14) to the upper crosspiece (12), the assembly brackets (15) being housed between the front wall (17) and the rear wall (16) of the pre-frame and being configured to be covered by the frame (5) of said obstruction device (4).

3. Pre-frame (10) according to claim 2, in which the brackets (15) are made of polyamide, and preferably of polyamide 6, known as PA6.

4. Pre-frame (10) according to any one of claims 1 to 3, in which the front wall (17) comprises a longitudinal notch (25) extending along the side uprights (13, 14) and / or the upper crosspiece (12).

5. Pre-frame (10) according to claim 4, in which the longitudinal notch (25) comprises at least one inclined face (26) at approximately 45° relative to the front wall (17).

6. Pre-frame (10) according to any one of claims 1 to 5, wherein the front wall (17) comprises a free longitudinal edge (21) comprising a substantially concave longitudinal chamfer (29), configured to receive a sealing bead between the pre-frame (10) and said panel (11) of thermal insulating material.

7. Pre-frame (10) according to any one of claims 1 to 6, in which the rear wall (16) comprises a free longitudinal edge (20) comprising a longitudinal tongue (24) projecting towards the interior space (19) of the pre-frame.

8. Pre-frame (10) according to any one of claims 1 to 7, further comprising at least one installation wedge (30) for the pre-frame in the opening, the installation wedge comprising a groove (33) and the rear wall (16) and / or the central portion (18) each comprising a longitudinal tenon (27) configured to cooperate with the groove (33) of the at least one installation wedge (30) for its attachment to the pre-frame.

9. Pre-frame (10) according to claim 8, comprising a plurality of installation wedges (30), each installation wedge further comprising a tenon (34) opposite the groove (33) and configured to cooperate with the groove (33) of another installation wedge, so as to allow the securing of a plurality of installation wedges to each other.

10. Pre-frame (10) according to one of claims 8 or 9, in which, on the one hand the longitudinal tenon(s) (27) and / or the tenon (34) of a laying wedge (30), and on the other hand the groove (33) of a laying wedge (30) together form a dovetail-type connection.

11. Pre-frame (10) according to any one of claims 1 to 10, in which the upper crosspiece (12) and the side uprights (13, 14) are made of polyvinyl chloride, known as PVC.

12. Pre-frame (10) according to any one of claims 1 to 11, in which the upper cross member (12) and the side uprights (13, 14) have a square cross section, preferably approximately 45 millimeters on each side.

13. An assembly comprising a pre-frame (10) according to any one of claims 1 to 12 and an obstruction device (4) mounted in the pre-frame.

14. Building comprising a facade (1) having an opening (2), a device (4) for obstructing the opening and a pre-frame (10) according to any one of claims 1 to 12, the pre-frame (10) being mounted in the opening (2) and the obstruction device (4) being mounted in the pre-frame (10).

15. Building according to claim 14, further comprising external thermal insulation comprising one or more panels (11) of thermal insulation at least partly covering the facade (1), and at least partly covering the front wall (17) of the pre-frame (10).

16. Use of a pre-frame (10) according to any one of claims 1 to 12 in a building, the pre-frame (10) being placed in a facade opening (2) and a frame (5) of an obstruction device (4) being placed in the pre-frame (10), so that the pre-frame (10) is arranged between on the one hand the panels and the lintel of the opening (2) and on the other hand the frame (5) of the obstruction device (4), the front wall (17) of the pre-frame being covered at least partially by a panel (11) of thermal insulation.

17. Method (200) for installing a frame (5) of an obstruction device (4) of an opening (2) of a facade (1) thermally insulated from the outside, in a pre-frame (10) according to any one of claims 1 to 12, comprising the steps of: - assembling (201) the lateral uprights and the upper crosspiece to form the pre-frame (10); then - installing and fixing (202) the pre-frame (10) in the opening; - installing and fixing (203) the frame of the obstruction device on the pre-frame (10); - covering (204) at least partially the front wall of the pre-frame (10) with at least one thermal insulation panel.

18. A method (200) of installation according to claim 17, the pre-frame (10) comprising a longitudinal notch (25) extending along the side uprights and / or the upper crosspiece, the installation and fixing step (202) comprising the step of screwing one or more fixing screws from the longitudinal notch (25) through the front wall (17) and the central portion (18) into the panels and / or the lintel of the opening (2).

19. Method (200) of installation according to one of claims 17 or 18, the pre-frame (10) comprising one or more installation wedges (30) of the pre-frame in the opening, each installation wedge comprising a groove (33) and the rear wall (16) and / or the central portion (18) each comprising a longitudinal tenon (27) configured to cooperate with the groove (33) of the at least one installation wedge (30) for its fixing on the pre-frame, the installation and fixing step (202) comprising the step of securing one or more installation wedges to the pre-frame to adjust the plumb and level of the pre-frame.

20. Method (300) for renovating a building comprising a facade (1) having an opening (2), the building being thermally insulated from the outside by means of at least one thermal insulation panel (11), and wherein an obstruction device (4) for the opening is mounted in a pre-frame (10) according to any one of claims 1 to 12, the method comprising the steps of: - removing only the obstruction device (4) from among the obstruction device (4), the pre-frame (10) and the at least one thermal insulation panel (11); - fixing a new obstruction device on the pre-frame (10).

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