Pre-frame for a facade opening obstruction device on a building with external thermal insulation

Abstract

The invention relates to a subframe (10) for a blocking device (4) for a facade opening of a building intended to be thermally insulated from the outside, the subframe comprising a top rail (12) and two side posts (13, 14) mechanically connected to the latter, delimiting an interior space of the subframe, the subframe thus formed comprising a rear wall (16) and a front wall (17) extending opposite each other, and a central portion (18) connecting them, the subframe being configured to be mechanically fixed to the jambs and / or the lintel of the facade opening by its central portion, its front wall being configured to receive a thermal insulation panel (11); the subframe being further configured to receive in its interior space a frame (5) of said blocking device, so that the subframe is disposed between on the one hand the jambs and the lintel of the opening and on the other hand the frame of the blocking device.Figure for the abbreviation: figure 1.

Description

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

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

[0002] More specifically, the invention relates to a pre-frame for a facade opening obstruction device 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 particular applications in the building sector, whether for residential, industrial, or commercial purposes. The invention has a specific application in the field of external thermal insulation of buildings, whether in new construction or renovation. STATE OF THE ART

[0007] External Thermal Insulation (ETI) is a high-performance technique for insulating buildings, which consists of 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 cladding. ETI helps to improve the building's energy efficiency by limiting heat loss, while also enhancing interior comfort and enabling significant energy savings.

[0008] This technique is suitable for both new construction projects and facade rehabilitations, 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] EWI results in an increase in the thickness of the walls, which has the effect of limiting heat loss in winter and preventing heat from penetrating the building in summer.

[0011] It is known that approximately 20% of the heat loss of 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 the latter) as well as the installation of efficient joinery blocking devices (or the replacement of less efficient blocking devices with the latter).

[0013] Various types of obstruction devices are known that allow for the total or partial obstruction of facade openings, particularly of buildings, such as windows, doors and French windows.

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

[0015] On the other hand, there are hinged obstruction devices, such as hinged shutters that can pivot around a vertical axis.

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

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

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

[0019] A first installation technique involves fixing the window or door frame in the facade opening, followed by fixing the blocking device either also in the opening or to the window or door frame. Insulating panels are then installed over the window or door frame and the blocking device.

[0020] A second installation technique involves fixing the window or door frame in the facade opening, followed by installing insulating panels over the frame's jambs. The blocking device is then placed on top of the insulating panels.

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

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

[0023] The second installation technique mentioned above has the significant drawback that the dimensions of the blocking device must be adapted to the resulting dimensions after the installation of the insulating panels, which themselves may be of varying thickness. The installation of the insulating panels may also be imprecise or approximate.

[0024] This technique also has the disadvantage of a complex fixing of the frame of the obstruction device, 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 significant drawback, particularly when the insulation installation is lengthy, as the obstruction device can only be installed long after the joinery has been installed.

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

[0027] The present invention aims to remedy all or part of the disadvantages of the prior art mentioned above.

[0028] To this end, the invention relates to a subframe for a facade opening obstruction device of a building intended to be thermally insulated from the outside, the subframe comprising a top rail and two lateral uprights mechanically connected to the top rail, delimiting an interior space of the subframe, the subframe thus formed comprising a rear wall and a front wall extending opposite each other, and a central portion connecting the front wall and the rear wall, the subframe being configured to be mechanically fixed to the jambs and / or 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 internal space a frame of said obstruction device, so that the pre-frame is disposed between on one side the jambs and the lintel of the opening and on the other side the frame of the obstruction device.

[0029] The pre-frame allows an obstruction device to be installed 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 subframe is also not dependent on the installation of the thermal insulation.

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

[0032] In addition, the subframe has predefined dimensions by the uprights and the crossbar, which allows a predefined-dimensioned obstruction device to be placed in the opening.

[0033] This allows for the standardization of the dimensions of the obstruction devices.

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

[0035] Other particularly simple and convenient features of the preframe according to the invention are described below.

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

[0037] This allows for a particularly simple, robust and discreet assembly of the side uprights with the top crossbar.

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

[0039] This ensures good robustness of the brackets and thus of the assembly of the subframe.

[0040] - The front wall has a longitudinal notch extending along the uprights lateral and / or upper crossbar.

[0041] This allows for fixing through the front wall of the subframe, via one of the inclined faces of the notch, into the jambs and / or lintel of the opening. Such fixing is advantageous when the inside of the side jambs and / or the top rail is not accessible during installation.

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

[0043] - The front wall has a free longitudinal edge comprising a chamfer longitudinally concave, configured to receive a sealing bead between the subframe and said thermal insulating material panel.

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

[0045] This allows a maximum axial position stop to be defined for the obstruction device on the subframe.

[0046] - The subframe further comprises at least one subframe mounting wedge in the opening, the mounting wedge having a groove and the rear wall and / or the central portion each have a longitudinal tenon configured to cooperate with the groove of at least one mounting wedge for its attachment to the subframe.

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

[0048] - The subframe comprises a plurality of positioning wedges, each positioning wedge furthermore also comprising a tenon opposite the groove and configured to cooperate with the groove of another setting wedge, so as to allow the joining of a plurality of setting wedges to each other.

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

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

[0051] - The upper crossbar and side uprights are made of polyvinyl chloride, known as PVC.

[0052] Thus, the subframe is shock resistant, does not yellow, can be treated with UV light, 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 standard thickness thermal insulation panel of 40 millimeters, so that the interior space of the subframe is not covered with thermal insulation.

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

[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 subframe as described above, the subframe being mounted in the opening and the obstruction device being mounted in the subframe.

[0057] For example, the building also includes 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 subframe.

[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 jambs 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 to block an opening in a facade that is thermally insulated from the outside, within a subframe as described above, comprising the steps of: - assembling the side uprights and the top rail to form the subframe; then - positioning and fixing the subframe in the opening; - installation and fixing of the obstruction device frame onto the subframe; - at least partial covering of the front wall of the subframe with at least one thermal insulation panel.

[0060] According to one embodiment, the subframe has a longitudinal notch extending along the side uprights and / or the top rail, the installation and fixing step including the step of screwing one or more fixing screws from the longitudinal notch through the front wall and the central portion into the jambs and / or the lintel of the opening.

[0061] According to one embodiment, the subframe includes one or more subframe positioning wedges in the opening, each positioning wedge having a groove and the rear wall and / or the central portion each having a longitudinal tenon configured to cooperate with the groove of at least one positioning wedge for its fixing on the subframe, the positioning and fixing step including the step of securing one or more positioning wedges to the subframe to adjust the plumb and level of the subframe.

[0062] According to a sixth aspect, the invention also relates to a method for renovating a building comprising a facade with 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 blocking the opening is mounted in a subframe as described above, the method comprising the steps of: - removal only of the obstruction device from among the obstruction device, the subframe and at least one thermal insulation panel; - fixing a new obstruction device on the subframe. BRIEF DESCRIPTION OF THE FIGURES

[0063] Other advantages, purposes and particular features of the present invention will become apparent from the following non-limiting description of at least one particular embodiment of the devices and methods of the present invention, with reference to the accompanying drawings, in which: • [Fig.1] is a schematic perspective and cross-sectional view of a building facade thermally insulated from the outside, including an opening and an opening obstruction device, mounted in a subframe which is fixed in the opening; • [Fig.2] is a schematic perspective view of the subframe comprising two side uprights and a top crossbar; • Figure 3 is a detailed perspective view of a section of a profile forming the side uprights and / or the top crossbar of the subframe; • [Fig.4] is a detailed perspective view of sections of two profiles as shown in [Fig.3] joined using a bracket; • [Fig. 5] is a cross-sectional view of a subframe upright installed in the opening; • [Fig.6] schematically represents a positioning wedge for the subframe; • [Fig.7] is a block diagram of a method for installing an obstruction device in a subframe; • [Fig. 8] is a block diagram of a renovation process for a facade including an obstruction device mounted in a subframe. DETAILED DESCRIPTION OF THE INVENTION

[0064] The present description is given by way of non-limiting grammar, each feature of an embodiment being able to be advantageously combined with any other feature of any other embodiment.

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

[0066] Fig. 1 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 façade 1 has an opening 2, which here is a window opening formed in the wall of the façade 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 includes a joinery placed in the opening 2, however the opening 2 may also be open and not include any joinery.

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

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

[0073] In the illustrated example, the obstruction device 4 is a horizontally sliding louver.

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

[0075] In addition, the obstruction device 4 comprises a sliding apron including 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 total or partial obstruction of the opening 2 by total or partial retraction 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 sliding folding panels, sliding folding shutters, etc., of the hinged type, for example hinged shutters that can pivot around a vertical axis, etc., or of the roller shutter type, comprising slats that can roll up around a horizontal axis.

[0078] The facade 1 here includes 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 via the subframe 10.

[0080] In addition, the building includes external thermal insulation, known as EWI.

[0081] The EWI is here achieved using one or more thermal insulation panels 11, fixed to the outside of facade 1, for example directly onto the wall of facade 1.

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

[0083] In particular, the frames 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.1], the thermal insulation panels 11 cover at least partially the subframe 10, in other words, the latter is encased 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 preframe 10 taken in isolation.

[0090] The subframe 10 comprises an upper cross member 12 and two side uprights 13 and 14 mechanically connected to the upper cross member 12.

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

[0092] The side uprights 13 and 14 are mechanically connected each by one of their ends to respectively a distinct end of the upper cross member 12.

[0093] The subframe 10 may include at least two brackets 15 (shown in dashed line on [Fig.2]), which mechanically connect each of the side uprights 13 and 14 to the upper cross member 12.

[0094] The pre-frame 10 thus has a general shape substantially of U, and which is here arranged in reverse in the opening 2 on the [Fig.1].

[0095] The side uprights 13 and 14 and the upper cross member 12 together define an interior space 19 of the subframe, corresponding to the interior of the generally U-shaped subframe.

[0096] Each of the side uprights 13 and 14 and of the upper cross member 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 subframe 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 side uprights 13 and 14 and the upper cross member 12.

[0098] With reference to [Fig.2], the profiles forming the side uprights 13 and 14 and the top cross member 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 subframe 10, the front walls 17a, 17b and 17c together form the front wall 17 of the subframe 10, and the central portions.

[0100] As can be seen in [Fig.1] in particular, the subframe 10 is configured to be mechanically fixed to the frames and / or the lintel of the opening 2 by its central portion 18.

[0101] The rear wall 16 of the subframe 10 is thus oriented in relation to the opening 2, and here of the window 3.

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

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

[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 about 45 millimeters, while the thickness of the thermal insulation panel 11 is about 40 millimeters.

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

[0107] The profiles may have a substantially square cross-section, for example of about 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 honeycomb.

[0111] With reference to figures 3 to 5, an example of the geometry of a profile forming the side post 14 is described below, it being understood that such a profile can also form the side post 13 and / or the top cross member 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 post 14 comprises a rear wall 16b, a front wall 17b and a central portion 18b.

[0113] In the illustrated example, the rear wall 16b and the front wall 17b each have 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 an essentially U-shaped form.

[0116] The U shape can in particular be inscribed in a substantially square shape, that is to say that the side uprights and / or the top cross member have a cross section of generally square external shape.

[0117] In particular, the U-shaped opening is turned towards the interior space 19 of the preframe 10.

[0118] The rear wall 16b has an outer face 161b, oriented towards the outside of the subframe 10 and configured to be oriented towards the opening 2 and in particular towards 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, a terminal 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 preframe 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 the level of its free longitudinal edge 21, a terminal 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 preframe 10 and configured to be oriented towards the outside of the building and in particular towards a table 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 has, at its free longitudinal edge 20, a longitudinal tongue 24 which is free and which protrudes towards the interior space 19 of the subframe 10.

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

[0125] According to one variant, the longitudinal tongue 24 may have an L-shaped section, and protrude both from the terminal face 163b of the rear wall 16b into the interior space 19 of the subframe 10, and from the outer face 161b of the rear wall 16b.

[0126] In addition, the front wall 17b has 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 cross-section substantially in the shape of a V.

[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 about 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 inclined face 26, and include a 37-cell alveolus between the front wall 17b and the central portion 18b.

[0132] The cavity 37 may include two longitudinal partitions 38, which are here substantially parallel to each other and which extend substantially at a right angle from the inclined face 26. The longitudinal partitions 38 allow in particular to guide a fixing screw of the subframe passing through the inclined face 26, as described below.

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

[0134] In the illustrated example, the longitudinal chamfer 29 is formed at the edge between the outer face 171b and the terminal 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 include a longitudinal tenon 27.

[0137] In the illustrated example, 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 substantially trapezoidal in shape.

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

[0140] In the illustrated example, 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 illustrated example, the longitudinal recess on the outer face 181b is formed over substantially the entire outer face 181b.

[0142] The subframe 10 may further include one or more positioning wedges 30, as illustrated in [Fig.6] which shows a positioning wedge 30 taken in isolation.

[0143] The positioning wedge 30 has a first face 31 and a second face 32 opposite to 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 includes a groove 33 having a section whose shape corresponds substantially to the shape of the section of the longitudinal tenon 27.

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

[0147] The positioning wedge 30 can be inserted through its groove 33 onto the longitudinal tenon 27, and secured to the subframe 10.

[0148] In addition, the second face 32 of the positioning wedge 30 may include 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 tenon 34 is substantially trapezoidal in shape.

[0150] Thus, another positioning wedge 30 can be inserted through its groove 33 onto the tenon 34 of a first positioning wedge 30 attached to the subframe 10, and thus in turn be attached to the subframe 10.

[0151] In addition, the positioning wedge 30 may include a central opening 35, which is through.

[0152] The central opening 35 is provided to receive a fixing screw for the subframe 10, which also allows the positioning wedge 30 to be held in a predefined position.

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

[0154] The positioning wedge 30, for example, has a thickness of approximately 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 internal face 172b by means of a recess and / or an overthickness 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 cross member 12.

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

[0159] The shape of L 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 subframe 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-shaped 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 placement in an opening 2, will now be described in more detail.

[0165] The subframe 10 is formed by assembling the side uprights 13 and 14 and the top cross member 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 positioning wedges 30 secured to each other, to adjust the plumb and level of the pre-frame 10.

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

[0168] The subframe 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 subframe 10 towards the exterior, right up to facade 1, as illustrated by the fixing axis XI on [Fig.5].

[0169] In addition or as an alternative, the subframe 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 on the [Fig.5].

[0170] When the rear wall 16 is opposite a portion of the facade 1, the subframe 10 can also be fixed by a plurality of screws passing through the profile on both sides 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 inside of the subframe 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 terminal faces 163a to 163c and 173a to 173c.

[0175] The longitudinal tongue 24 allows the frame 5 to be positioned axially by defining a stop position of the frame 5 in the subframe 10.

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

[0177] The frame 5 is fixed to the subframe 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 particular in [Fig.5], and receives a seal or sealing cord (not shown) between the subframe 10 and the thermal insulation.

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

[0181] The [Fig.7] is a block diagram illustrating process 200.

[0182] Process 200 comprises the following steps:

[0183] - A step 201 of assembling the side uprights 13 and 14 and the cross member upper 12 to form the preframe 10.

[0184] - A step 202 of laying and fixing the subframe 10 in the opening 2.

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

[0186] Step 202 may optionally include step 2022 of fixing the subframe 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 positioning and fixing the frame 5 of the obstruction device 4 on the preframe 10.

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

[0189] It should be noted that steps 203 and 204 can be reversed, if necessary.

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

[0191] The pre-frame 10 allows an obstruction device 4 to be installed regardless of the stage of progress of the external thermal insulation of the building.

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

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

[0194] In addition, the invention also relates to the renovation of an opening comprising an obstruction device mounted on a subframe 10 as described above, i.e. 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] The [Fig.8] is a block diagram illustrating process 300.

[0197] Process 300 comprises the following steps:

[0198] A step 301 of removal only of the obstruction device 4 among the obstruction device 4, the preframe 10 and at least one thermal insulation panel 11.

[0199] A step 302 of fixing a new obstruction device 4 onto the subframe 10.

[0200] The process 300 therefore does not include any step of removing the thermal insulation panel 11 from the front wall 17 of the subframe 10, and no step of removing the subframe 10 from the opening 2.

[0201] The pre-frame 10 thus allows for 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 than a truck or mobile home, or even a ship for example.

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

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

[0207] - The subframe further comprises a lower cross member, connecting the uprights side.

[0208] - The subframe includes a lower cross member, connecting the side uprights, and does not does not include upper crossbar.

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

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

[0211] - The uprights and / or the crossbar are formed by profiles having a geometry different from that described, and in particular do not necessarily include a longitudinal tongue, and / or longitudinal groove, and / or longitudinal chamfer, and / or 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 cross member are joined together by means different from a square, for example by screwing, fitting, gluing, welding, etc.

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

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

Claims

Demands

1. Assembly comprising a subframe (10) and a sliding louver forming a blocking device (4) for a facade opening (2) (1) of a building intended to be thermally insulated from the outside, the blocking device (4) being mounted in the subframe (10), the subframe (10) comprising a top rail (12) and two side posts (13,14) mechanically connected to the top rail, delimiting an interior space (19) of the subframe, the subframe thus formed comprising a rear wall (16) and a front wall (17) extending opposite each other, and a central portion (18) connecting the front wall and the rear wall, the subframe (10) being configured to be mechanically fixed to the reveals and / or the lintel of the facade opening (2) by its central portion (18),its front wall (17) being configured to receive a thermal insulation panel (11) and its rear wall being configured to be oriented towards a joinery (3) installed in the opening (2); the subframe (10) receiving in its interior space (19) a frame (5) of said obstruction device (4), so that the subframe (10) is disposed between on the one hand the jambs and the lintel of the opening (2) and on the other hand the frame (5) of the obstruction device (4).

2. Assembly according to claim 1, the subframe (10) further comprising two assembly brackets (15) which each mechanically connect respectively a side post (13, 14) to the upper cross member (12), the assembly brackets (15) being housed between the front wall (17) and the rear wall (16) of the subframe and being configured to be covered by the frame (5) of said obstruction device (4).

3. Assembly according to claim 2, wherein the brackets (15) are made of polyamide, and preferably of polyamide 6, referred to as PA6.

4. Assembly according to any one of claims 1 to 3, wherein in the subframe (10), the front wall (17) has a longitudinal notch (25) extending along the side uprights (13, 14) and / or the top cross member (12).

5. Assembly according to claim 4, wherein the longitudinal notch (25) has at least one inclined face (26) at approximately 45° with respect to the front wall (17).

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

7. Assembly according to any one of claims 1 to 6, wherein in the subframe (10), the rear wall (16) has a free longitudinal edge (20) comprising a longitudinal tongue (24) projecting towards the interior space (19) of the subframe.

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

9. Assembly according to claim 8, comprising a plurality of positioning wedges (30), each positioning wedge further also comprising a tenon (34) opposite the groove (33) and configured to cooperate with the groove (33) of another positioning wedge, so as to allow the joining of a plurality of positioning wedges to one another.

10. Assembly according to any one of claims 8 or 9, wherein, on the one hand, the longitudinal tenon(s) (27) and / or the tenon (34) of a positioning wedge (30), and on the other hand, the groove (33) of a positioning wedge (30) together form a dovetail type connection.

11. Assembly according to any one of claims 1 to 10, wherein in the subframe, the upper cross member (12) and the side members (13, 14) are made of polyvinyl chloride, referred to as PVC.

12. Assembly according to any one of claims 1 to 11, wherein in the subframe, the upper cross member (12) and the side members (13, 14) have a square cross section, preferably of about 45 millimeters on each side.

13. Building comprising a facade (1) having an opening (2), and an assembly according to any one of claims 1 to 12, the preframe (10) of said assembly being mounted in the opening (2), and the obstruction device (4) of said assembly being mounted in the preframe (10).

14. Building according to claim 13, further comprising external thermal insulation comprising one or more thermal insulation panels (11) covering at least part of the facade (1), and covering at least part of the front wall (17) of the subframe (10).

15. Use of an assembly according to any one of claims 1 to 12 in a building, the subframe (10) being placed in a facade opening (2) and the frame (5) of the obstruction device (4) being placed in the subframe (10), so that the subframe (10) is arranged between, on the one hand, the jambs 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 subframe being covered at least partially by a thermal insulation panel (11).

16. Method (200) of installing an assembly according to any one of claims 1 to 12, comprising the steps of: - assembling (201) the side posts and the top rail to form the subframe (10); then - installing and fixing (202) the subframe (10) in the opening; - installing and fixing (203) the frame of the obstruction device on the subframe (10); - covering (204) at least partially the front wall of the subframe (10) with at least one thermal insulation panel.

17. Method (200) of installation according to claim 16, the subframe (10) having a longitudinal notch (25) extending along the side posts and / or the top rail, the step of installation and fixing (202) of the subframe (10) in the opening 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 jambs and / or the lintel of the opening (2).

18. A method (200) of installation according to any one of claims 16 or 17, the subframe (10) comprising one or more installation wedges (30) of the subframe in the opening, each installation wedge having a groove (33) and the rear wall (16) and / or the central portion (18) each having a longitudinal tenon (27) configured to cooperate with the groove (33) of at least one installation wedge (30) for its attachment to the subframe, the step of installation and attachment (202) of the subframe (10) in the opening comprising the step of securing one or more installation wedges to the subframe to adjust the plumb and level of the subframe.

19. 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 panel (11) of thermal insulation, and comprising an assembly 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 subframe (10) and the at least one panel (11) of thermal insulation; - fixing a new obstruction device on the subframe (10).

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