PRE-FRAME FOR SEALING BETWEEN A JOINERY AND A BUILDING

Abstract

A sealing subframe (30) between a window or door frame (10) and a frame (12), the subframe (30) defining a closed contour and comprising elongated profiles (32), at least some of which are joined to each other by their longitudinal ends (32a), characterized in that each profile (32) is produced by co-extrusion and comprises two longitudinal parts (34, 36) joined to each other by co-extrusion, a first part, called the fixing part (34), being made of a first plastic or composite material having a first hardness and being suitable for fixing the profile (32) to the frame (18), and a second part, called the sealing part (36), being made of a second plastic or composite material having a second hardness lower than the first hardness and being suitable for sealing between the frame (18) and the structure (12). Abbreviated figure: Figure 3

Description

Title of the invention: SEALING PRE-FRAME BETWEEN A JOINERY AND A FRAME Technical field of the invention

[0001] The invention relates in particular to a pre-frame for caulking between a joinery and a frame. Technical background

[0002] In the field of building work, the implementation of windows and exterior doors, commonly referred to as "joinery", is subject to numerous regulations or standards.

[0003] This is particularly the case in France where the NF DTU 36.5 standard applies. This standard provides several definitions that can be used in the context of the present invention.

[0004] A "sealing" is a filling of a joint separating two elements: for example, wall / window frame, whose main function is to ensure water and / or air tightness. Such a seal is also called a "sealing gasket".

[0005] A seal is therefore necessary between the frame of a joinery and a structure or building to ensure water and / or air tightness between the structure and the joinery, over the entire perimeter or surrounding area of ​​the joinery.

[0006] There are several types of caulking. Caulking can, for example, be carried out using a sealant, an impregnated foam or a sealing membrane.

[0007] In practice, there are two types of caulking application. According to the first type, after the window or door frame has been installed and secured to the frame, a sealant can be applied around the entire perimeter of the frame, between the frame and the jamb. Before applying this sealant, a foam gasket can be manually inserted between the jamb and the window or door frame to create a base for the sealant and thus prevent it from spreading.

[0008] According to a second type, before the window or door frame is installed, the impregnated foam or sealing membrane is glued to the frame around its entire perimeter. This operation is carried out manually by an operator and is relatively time-consuming. It is also complex because great care must be taken with the gluing to ensure optimal sealing with the frame. In particular, the sealant must be glued to a clean surface of the frame and must not be stretched excessively to maintain a certain degree of flexibility and elasticity under compression.

[0009] There is therefore a need to find an alternative to applying caulking around the perimeter of a joinery frame, before installing it on a frame.

[0010] The present invention proposes a simple, effective and economical solution to this need of the prior art. Summary of the invention

[0011] To this end, the invention proposes a sealing subframe between a window or door frame and a frame, the subframe being suitable for mounting on an external periphery of a window or door frame before the frame is installed on the frame, the subframe defining a closed contour and comprising elongated profiles, at least some of which are joined to each other by their longitudinal ends, characterized in that each of the profiles is made by co-extrusion and comprises two longitudinal parts joined to each other by co-extrusion, a first part, called the fixing part, being made of a first plastic or composite material having a first hardness and being suitable for fixing the profile to the frame, and a second part, called the sealing part,being made of a second plastic or composite material having a second hardness lower than the first hardness and being suitable for sealing between the frame and the structure.

[0012] The subframe according to the invention has many advantages. It is manufactured by coextrusion, and its two parts are joined together by coextrusion. The manufacture of the subframe, and in particular its profiles, is therefore relatively simple.

[0013] In contrast to the use of an adhesive, which creates an adhesive bond between two parts, co-extrusion of the two parts creates a cohesive bond between them. A cohesive bond is characterized by greater bond strength because it requires breaking the material of one of the parts at the interface, rather than simply separating the parts from each other at the interface. Separating two parts joined by a cohesive bond generally results in a residue of material from one part on the other, at the interface.

[0014] Furthermore, the co-extrusion process ensures that the profiles have the same shape and dimensions in cross-section along their entire length. Regardless of the frame and jamb material, both parts of each profile are made of plastic or composite materials, which also simplifies the use of the subframe, as a limited number of part numbers may be required to install different window and door units. The subframe can be pre-assembled and delivered pre-assembled, or it can be delivered as profiles to be assembled, some of which need to be joined at their ends.

[0015] Sealing can be achieved by compressing the sealing portion between the frame and the structure. It is therefore understood that the sealing portion is compressible. The sealing portion compensates for any irregularities, particularly in the structure.

[0016] The fixing can be mechanical, either directly via the fixing part or via the inside of external elements. Advantageously, the fixing is free of any glue or adhesive. It is therefore understood that the fixing part is not intended to be glued to the frame, thus avoiding the drawbacks of the prior art.

[0017] The preframe according to the invention may comprise one or more of the following features, taken individually or in combination with each other:

[0018] — the fixing part is adapted to allow the profile to be fixed to the frame without adhesive or glue;

[0019] — the materials of the two parts are chemically compatible so that these parts are joined to each other solely by co-extrusion; • the subframe has a general rectangular shape and comprises three profiles joined together by their longitudinal ends, and a fourth independent profile; • the subframe has a general rectangular shape and comprises four profiles joined together at their longitudinal ends; • The second part is designed to be inserted between the frame and the soffit and comprises a first longitudinal face designed to come into contact with the soffit. • the second part includes a second longitudinal face suitable for coming into contact with the frame; • said first face is flat, concave, convex, or saw-toothed; • said second face is flat;

[0020] — the first and second faces are parallel;

[0021] — the second part comprises a third longitudinal flat face, parallel to the first and second flat faces, and to which the first part is connected;

[0022] — the third face is located in a recess or rebate of the second part ; • the first part is able to be fixed by itself, by hooking, snapping or pinching, to the frame; • the first part is suitable for being fixed to the frame by fasteners, such as screws;

[0023] — the first part comprises at least one first flat longitudinal wall of which a first longitudinal edge is connected to the second part;

[0024] — the first wall has a thickness less than the thickness of the second part, these thicknesses being measured in the same direction perpendicular to the plane in which the first wall extends;

[0025] — the first wall comprises a second longitudinal edge, opposite the first edge longitudinal, which is free;

[0026] — the first wall comprises a second longitudinal edge, opposite to the first longitudinal edge, which is connected to a first longitudinal edge of a second flat longitudinal wall perpendicular to the first wall;

[0027] — the second wall comprises, on the side of its second longitudinal edge opposite its first longitudinal edge, at least one longitudinal hook capable of cooperating with the fixed part;

[0028] — the first part has a general L-shaped cross-section;

[0029] — the second wall comprises a second longitudinal edge opposite to its first longitudinal edge, which is connected to a first longitudinal edge of a third flat longitudinal wall which is folded over and along the first wall to form a clamp;

[0030] — the first part has a general U-shaped cross-section; • the longitudinal ends of the profiles are joined together by overmolded angles; • the overmolded angles are made of the same material as the second part of each of the profiles;

[0031] — the first part is based on thermoplastic (TP); • the first part has a Shore D hardness greater than or equal to 40, preferably greater than or equal to 50, more preferably greater than or equal to 55; • the first part has a Shore A hardness greater than or equal to 85, preferably greater than or equal to 95, more preferably greater than or equal to 100;

[0032] — the first part is formed from a compact material, that is to say non alveolar;

[0033] — the second part is formed from a compact material, that is to say non alveolar;

[0034] — the first part is based on thermoplastic elastomer (TPE); • the second part has a Shore 00 hardness less than or equal to 100, preferably less than or equal to 50, and more preferably less than or equal to 30; • the second part has a Shore A hardness of less than or equal to 75, preferably less than or equal to 30, and more preferably less than or equal to 10;

[0035] — the preframe defines a closed contour.

[0036] The present invention also relates to an assembly comprising a joinery and a subframe as described above, the joinery comprising a frame around which the subframe is mounted before being placed on a frame.

[0037] The present invention further relates to a method of installing joinery on a frame by means of a subframe as described above, in which it comprises the following steps:

[0038] a) fixing the subframe around a fixed part of the joinery, so as to form an assembly, and

[0039] b) installation and fixing of the assembly on the frame, the second part of each of the profiles being inserted between the frame and the frame all around the perimeter of the joinery.

[0040] The preframe according to the invention may comprise one or more of the following features, taken individually or in combination with each other:

[0041] — step a) comprises the simultaneous fixing of the three integral profiles to the fixed, respectively on an upper horizontal post and on two vertical posts, and independently the fixing of the fourth profile on the fixed, in particular on a lower horizontal post;

[0042] — the three integral profiles are fixed by themselves to the frame, and the The fourth profile is fixed by fasteners such as screws to the frame;

[0043] — step a) comprises the simultaneous fixing of the four profiles joined together on the frame, one of these profiles can be fixed by fasteners such as screws on the frame. Brief description of the figures

[0044] Other features and advantages will become apparent from the following description of non-limiting embodiments of the invention with reference to the accompanying drawings in which:

[0045] [Fig-1] [Fig.1] is a schematic cross-sectional view of a joinery installed on a built with a rebate, with caulking between the frame of the joinery and the structure,

[0046] [Fig.2] [Fig.2] is a schematic cross-sectional view of a joinery unit mounted on a surface-mounted frame, with caulking between the joinery frame and the frame,

[0047] [Fig.3] [Fig.3] is a schematic perspective view of a caulking subframe according to a first embodiment of the invention,

[0048] [Fig.4] [Fig.4] is a schematic perspective view of a caulking subframe according to a second embodiment of the invention,

[0049] [Fig.5] [Fig.5] is a schematic cross-sectional view of a joinery mounted on a surface-mounted frame, with a pre-frame for sealing according to the invention,

[0050] [Fig.6] [Fig.6] is a schematic cross-sectional view of a profile of the caulking pre-frame of [Fig.5], on a larger scale,

[0051] [Fig.7] [Fig.7] is a view similar to that of [Fig.6] and showing dimensions of the profile,

[0052] [Fig-8] [Fig.8] is a schematic cross-sectional view of a joinery installed on a rebate frame, with a pre-frame for caulking according to an alternative embodiment of the invention,

[0053] [Fig.9] [Fig.9] is a schematic cross-sectional view of a profile of the caulking subframe of [Fig.8], on a larger scale, and shows the dimensions of the subframe,

[0054] [Fig. 10] [Fig. 10] is a schematic cross-sectional view of a joinery mounted on a surface-mounted frame, at the level of the lower rail of the joinery, with a pre-frame for caulking according to an alternative embodiment of the invention,

[0055] [Fig. 11] [Fig. 11] is a schematic cross-sectional view of a window or door frame mounted on a rebate, at the level of the bottom rail of the window or door frame, with a weatherstripping subframe according to the embodiment of the invention in [Fig. 10], e

[0056] [Fig. 12] [Fig. 12] is a schematic cross-sectional view of a profile of the caulking pre-frame of Figures 10 and 11, on a larger scale,

[0057] [Fig. 13] [Fig. 13] is a schematic cross-sectional view of a caulking subframe according to another embodiment of the invention, and

[0058] [Fig. 14] [Fig. 14] is a schematic cross-sectional view of a caulking pre-frame according to another embodiment of the invention. Detailed description of the invention

[0059] Figures 1 and 2 show two types of installation of a joinery 10 to which the present invention is particularly applicable. These are the rebate installation in [Fig. 1] and the surface-mounted installation (here interior) in [Fig. 2].

[0060] In the first type of [Fig.1], a frame 12 includes a rebate 14 in which the joinery 10 is mounted and fixed. In the second type of [Fig.2], the joinery 10 is applied and fixed against an external face 16 of the frame 12.

[0061] The frame 12 can be of any type. It could be a masonry or concrete frame, for example. It could also be a frame 12 made of wood or any other material.

[0062] The joinery 10 comprises at least one frame 18 and may include one or more sashes 20. The joinery 10 may include a pane of glass 22 carried for example by the sash 20.

[0063] The frame 18 can be made of any material and for example of plastic (PVC), aluminum, wood, etc.

[0064] As mentioned above, a seal 22 must be made between the frame 18 of the joinery 10 and the frame 12 to ensure air and / or water tightness between the frame 18 and the frame 12, all around the frame 18.

[0065] In the illustrated examples, the caulking 22 works in compression and is located in the case of [Fig.1] between the frame 18 and the rebate 14, and in the case of [Fig.2] between the frame 18 and the external face 16.

[0066] In the current technique, the sealing 22 is carried out by a sealant, an impregnated foam or a sealing membrane.

[0067] The present invention proposes a pre-frame for caulking 30, two examples of which are illustrated in figures 3 and 4.

[0068] Generally, the pre-sealing frame 30 is suitable for mounting on an external periphery of a joinery frame 18 10 before the frame 18 is installed on the frame 12. The joinery 10 and the frame 12 can be of the types shown in figures 1 and 2 or of different types.

[0069] The preframe 30 defines a closed contour and comprises elongated profiles 32, at least some of which are joined together by their longitudinal ends 32a.

[0070] In the examples shown, the pre-frame 30 has a general rectangular shape. It is understood that this shape is not limiting; any other geometric shape would be conceivable, for example triangular, square, trapezoidal, etc.

[0071] Since the subframe 30 has a rectangular shape and must be mounted around the perimeter of a frame 18, it is understood that this frame 18 has a rectangular perimeter or outline in the examples shown. The frame 18 can thus have two vertical lateral uprights and two horizontal rails, one upper and one lower, respectively.

[0072] Each of the profiles 32 is characterized by being produced by coextrusion and comprises two parts 34, 36 joined together by coextrusion ([Fig. 5]). It is therefore understood that they are produced simultaneously by coextrusion using a coextrusion die to obtain the two parts 34 and 36.

[0073] It is further understood that each of the profiles 32 has an elongated shape and that each of its parts 34, 36 also has an elongated shape.

[0074] A first part, called the fixing part 34, is made of a first plastic or composite material and has a first hardness. This fixing part 34 is suitable for fixing the profile 32 to the frame 18.

[0075] It is therefore understood that, whatever the material of the frame 18, the first fixing part 34 is made of plastic or composite material.

[0076] The fastening part 34 is, for example, made of thermoplastic (TP). Examples of usable thermoplastics include: PP, PPC, PE, SEBS, TPV and TPS.

[0077] The material of the fastening part 34 preferably has a melting temperature between 150 and 400°C, and preferably between 200 and 300°C.

[0078] The material of the fastening part 34 may include fillers, such as talc for example. The proportion of fillers may represent between 10 and 40% of the total weight of the fastening part, and preferably between 20 and 30% of this total weight.

[0079] The material of the fastening part 34 may have:

[0080] - a tensile modulus between 500 and 4000 MPa, preferably between 1000 and 3000 MPa, and more preferably between 2000 and 2500 MPa (ASTM D 638 or ISO 527-1,2), and / or a tensile strength between 10 and 50 MPa, and preferably between 15 and 30 MPa, and / or

[0081] - a flexural modulus between 500 and 4000 MPa, preferably between 1000 and 3000 MPa, and more preferably between 1800 and 2500 MPa (ISO 178).

[0082] The fastening part 34 preferably has:

[0083] - a Shore D hardness greater than or equal to 40, preferably greater than or equal to 50, more preferably greater than or equal to 55, or

[0084] - a Shore A hardness greater than or equal to 85, preferably greater than or equal to 95, more preferably greater than or equal to 100.

[0085] The fixing part 34 can have a density between 0.1 and 10g / cm3, preferably between 0.5 and 5g / cm3, and for example between 0.8 and 2g / cm3.

[0086] As an example, the material marketed by the company Taro Plast under the name HAIPLEN EP10 T5 can be used for the fixing part 34.

[0087] A second part, called the sealing part 36, is made of a second plastic or composite material and has a second hardness lower than the first hardness. This sealing part 36 is suitable for sealing between the frame 18 and the structure 12.

[0088] It is therefore understood that, whatever the material of the frame 18, the sealing part 36 is made of plastic or composite material.

[0089] The sealing part 36 is preferably made of a compact material with good residual strength.

[0090] The caulking part 36 is advantageously compressible.

[0091] The sealing part 36 is, for example, based on thermoplastic elastomer (TPE). The caulking part 36 is for example a TPS-SEBS.

[0092] The material of the caulking part 36 preferably has a melting temperature between 100 and 300°C, and preferably between 150 and 200°C.

[0093] The material of the caulking part 36 may have:

[0094] - a tensile strength between 0.2 and 10 MPa, preferably between 0.5 and 5 MPa, and more preferably between 0.8 and 2 MPa (ASTM D 638 or ISO 527-1,2), and / or

[0095] - an elongation at break greater than 400%, preferably greater than 600%, and more preferably greater than 800% (ASTM D 638 or ISO 527-1,2).

[0096] The caulking portion 36 preferably has:

[0097] - a Shore hardness of 100 or less, preferably 50 or less, and more preferably less than or equal to 30, or

[0098] - a Shore A hardness of 75 or less, preferably 30 or less, and more preferably less than or equal to 10.

[0099] The caulking part 36 can have a density between 0.1 and 10g / cm3, preferably between 0.5 and 5g / cm3, and for example between 0.8 and 2g / cm3.

[0100] In the embodiment shown in [Fig. 3], the subframe 30 has a generally rectangular shape and comprises three profiles 32b, 322, 323 joined together by their longitudinal ends 32a, and a fourth independent profile 324. In this case, it is understood that the subframe 30 is mounted in two stages around the perimeter of the frame 18. The three profiles 32b, 322, 323 can initially be mounted on three of the four sides of the frame 18. In the aforementioned case, these three profiles 32b, 322, 323 are preferably mounted respectively on one of the vertical stiles, the upper rail, and the other of the vertical stiles. The profile 324 is then subsequently mounted on the last side of the frame, at the level of its lower rail.

[0101] The longitudinal ends 32a of the profiles 32b 322, 323 can be joined together by overmolded angles 38. These angles 38 can be made of the same material as the sealing portion 36 of the profiles.

[0102] A sealing connection can then be provided between each of the longitudinal ends of the profile 324 and the corresponding longitudinal ends of the profiles 32b 323 in order to guarantee a continuous seal around the entire perimeter of the frame, between the frame and the structure.

[0103] In the embodiment shown in [Fig. 4], the subframe 30 has a generally rectangular shape and comprises four profiles 32b, 322, 323, 324 joined together by their longitudinal ends 32a. In this case, it is understood that the subframe 30 is mounted in one piece around the perimeter of the frame 18. The entire subframe 30 is mounted on the vertical stiles and the rails of the frame 18. The longitudinal ends 32a of the profiles 32b, 322, 323, 324 can also be joined together by molded corner brackets 38. These corner brackets 38 can be made of the same material as the sealing portion 36 of the profiles.

[0104] Several embodiments are conceivable for the profiles 32b 322, 323, 324 and in particular for their shapes and dimensions in cross section.

[0105] Figures 5 and following illustrate several embodiments of these profiles.

[0106] It should be noted that the profiles 32b 322, 323, 324 of the same subframe 32 may have the same shape and the same cross-sectional dimensions. Alternatively, at least some profiles 32b 322, 323, 324 of a subframe 32 may have the same shape and the same cross-sectional dimensions, which differ from the shape and dimensions of the other profile(s).

[0107] By way of example, Figures 5 to 7 illustrate a first embodiment of a subframe profile. This profile can be used for the production of profiles 32i, 322, 323, 324 of the same subframe 32, particularly in the embodiment shown in [Fig. 3]. Alternatively, this profile could be used for profiles 32b, 322, 323 only of a subframe 32, particularly in the embodiment shown in [Fig. 4]. The last profile 324 can then have the cross-sectional shape shown in Figures 10 and 12.

[0108] Figures 8 and 9 illustrate a second embodiment of a subframe profile. This profile can be used for the production of profiles 32b, 322, 323, and 324 of the same subframe 32, particularly in the embodiment shown in [Fig. 3]. Alternatively, this profile could be used for profiles 32b, 322, and 323 only of a subframe 32, particularly in the embodiment shown in [Fig. 4]. The last profile 324 can then have the cross-sectional shape shown in Figures 11 and 12.

[0109] Reference is made first to the embodiment shown in Figures 5 to 7. This embodiment is illustrated in the case where the installation is of the rebate type ([Fig.5]).

[0110] The sealing part 36 includes a first longitudinal face 36a suitable for contacting the frame 12. The sealing part 36 includes a second longitudinal face 36b suitable for contacting the frame 18 ([Fig.6]).

[0111] In the example shown, the two faces 36a, 36b are planar.

[0112] The first and second faces 36a, 36b are preferably parallel.

[0113] As in the example shown, the caulking portion 36 may include a third longitudinal flat face 36c, parallel to the first and second flat faces 36a, 36b, and to which the first part 34 is connected.

[0114] This third face 36c is preferably located in a recess 39 or a rebate of the caulking part 36.

[0115] The fixing part 34 is preferably able to be fixed by itself, by hooking, snapping or pinching, to the frame 18.

[0116] In the embodiment shown, the fixing part 34 includes at least a first flat longitudinal wall 40 of which a first longitudinal edge 40a is connected to the sealing part 36.

[0117] The first wall 40 preferably has a thickness (preferably maximum) El less than a thickness (preferably maximum) E2 of the caulking part 36, these thicknesses El and E2 being measured in the same direction perpendicular to the plane in which the first wall 40 extends.

[0118] The first wall 40 includes a second longitudinal edge 40b, opposite the first longitudinal edge 40a, which is connected to a first longitudinal edge 42a of a second planar longitudinal wall 42 perpendicular to the first wall 40. The second wall 42 extends on the side opposite the face 36a.

[0119] The second wall 42 includes a second longitudinal edge 42b opposite its first longitudinal edge 42a, which is connected to a first longitudinal edge 44a of a third flat longitudinal wall 44 which is folded down onto and along the first wall 40 to form a clamp.

[0120] The third wall 44 may have a shorter width than the second wall 42 as in the example shown.

[0121] The fastening part 34 then has in cross-section a general U-shaped or clamp-shaped form, as illustrated in the drawings.

[0122] It can also be seen in the drawings that the subframe 30 and in particular the profile 32 is suitable for being mounted on a partition 46 of the frame 18 by engaging this partition 46 in the clamp formed by the fixing part 34 ([Fig.6]).

[0123] The fixing portion 42 is advantageously elastically deformable. In particular, a certain degree of flexibility is provided by the second wall 42 to allow elastic separation of the walls 40, 44 relative to each other. Specifically, as can be seen in [Fig. 6], during the assembly of the subframe 30, the face 36b is applied against the frame 18, and the wall 44 is separated from the wall 40 in order to bear against the partition 46, on the side opposite the sealing portion 36, so that the partition 46 is clamped between the walls 40, 44.

[0124] In [Fig.7], dimensions have been indicated for this embodiment.

[0125] The width L1 of the profile is preferably between 10 and 30mm and preferably between 15 and 20mm.

[0126] The thickness (preferably maximum) E3 of the profile is preferably between 5 and 20mm and preferably between 8 and 15mm.

[0127] The width L2 of the sealing part 36 is preferably between 5 and 20mm and preferably between 8 and 15mm.

[0128] The thickness E2 of the sealing part 36 is preferably between 5 and 15mm and preferably between 6 and 10mm.

[0129] The width L3 of the fixing part 34 is preferably between 5 and 30mm and preferably between 10 and 20mm.

[0130] The thickness E5 of the fixing part 34 is preferably between 5 and 15mm and preferably between 6 and 10mm.

[0131] Each of the walls 40, 42, 44 preferably has a thickness El between 1 and 4 mm, and preferably between 1.5 and 2.5 mm. The walls 40, 42, 44 may have the same thickness El.

[0132] The wall 44 preferably has a width L4 between 5 and 15mm and for example between 6 and 12mm.

[0133] The wall 42 preferably has a height H1 between 2 and 5mm and for example between 3 and 4mm.

[0134] The recess 39 preferably has a depth H2 between 2 and 6mm, and for example between 3 and 5mm.

[0135] Reference is made to the embodiment shown in Figures 8 and 9. This embodiment is illustrated in the case where the installation is of the surface-mounted type ([Fig.8]).

[0136] The caulking part 36 is similar or identical to that described above in relation to the previous embodiment.

[0137] The fixing part 34 is preferably able to be fixed by itself, by hooking, snapping or pinching, to the frame 18.

[0138] In the embodiment shown, the fixing part 34 includes at least a first flat longitudinal wall 40 of which a first longitudinal edge 40a is connected to the sealing part 36.

[0139] The first wall 40 preferably has a thickness El less than a thickness E2 of the sealing part 36, these thicknesses El and E2 being measured in the same direction perpendicular to the plane in which the first wall 40 extends.

[0140] The first wall 40 includes a second longitudinal edge 50b, opposite the first longitudinal edge 40a, which is connected to a first longitudinal edge 42a of a second planar longitudinal wall 42 perpendicular to the first wall 40.

[0141] The second wall 42 includes, on the side of its second longitudinal edge 42b opposite its first longitudinal edge 42a, at least one longitudinal hook 50 capable of cooperating with the frame 18.

[0142] The fixing part 34 then has in cross-section a general L-shaped form, as illustrated in the drawings.

[0143] It can also be seen in the drawings that the subframe 30, and in particular the profile 32, is suitable for mounting in a groove 48 of the frame 18 by engaging the wall 42 in this groove 48 ([Fig. 8]). This groove 48 preferably includes retaining lugs 48a suitable for cooperating with the aforementioned hook 50.

[0144] The fastening portion 42 is advantageously elastically deformable. In particular, a certain degree of flexibility is provided by the connection between the walls 40, 42 to allow elastic bending of the wall 42 relative to the wall 40. In particular, as can be seen in [Fig. 8], the wall 42 is engaged in the groove 48 until face 36b comes into contact with frame 18, which can cause flexing of wall 42 relative to wall 40.

[0145] In [Fig. 9], dimensions for this embodiment are shown. The dimensions for the sealing portion 36 are those mentioned above in relation to [Fig. 7].

[0146] The width (preferably maximum) L1 of the profile is preferably between 10 and 30mm and preferably between 15 and 20mm.

[0147] The thickness (preferably maximum) E3 of the profile is preferably between 5 and 20mm and preferably between 8 and 15mm.

[0148] The width L3 of the fixing part 34 is preferably between 5 and 25mm and preferably between 10 and 20mm.

[0149] The thickness E5 of the fixing part 34 is preferably between 5 and 15mm and preferably between 6 and 12mm.

[0150] Each of the walls 40, 42, 44 preferably has a thickness El between 1 and 4 mm, and preferably between 1.5 and 2.5 mm. The walls 40, 42, 44 may have the same thickness El (except possibly at the hook 50).

[0151] The wall 42 preferably has a height H1 between 5 and 15mm and for example between 8 and 12mm.

[0152] Reference is made to the embodiments shown in Figures 10 to 12. The embodiment illustrated in [Fig. 10] corresponds to a surface-mounted installation, and that of [Fig. 11] corresponds to a rebate installation. In both embodiments, the same profile 32 is used, which is particularly suitable for use at the level of the lower rail of the frame 18.

[0153] The caulking part 36 is similar or identical to that described above in relation to the first embodiment.

[0154] The fixing part 34 is preferably suitable for being fixed by fixing elements, such as screws 52, to the frame 18.

[0155] In the embodiment shown, the fixing part 34 comprises a first flat longitudinal wall 40 of which a first longitudinal edge 40a is connected to the sealing part 36.

[0156] The first wall 40 preferably has a thickness (preferably maximum) El less than a thickness (preferably maximum) E2 of the sealing part 36, these thicknesses El and E2 being measured in the same direction perpendicular to the plane in which the first wall 40 extends.

[0157] The first wall 40 includes a second longitudinal edge 50b, opposite the first longitudinal edge 40a, which is free.

[0158] The wall 40 is applied to the frame 18 and the screw 52 is screwed into the frame through the wall 40, as illustrated in the drawing. The screw 52 can be self-drilling in the metal frame 18, for example.

[0159] The dimensions for the sealing part 36 are those mentioned above in relation to [Fig.7].

[0160] The width (preferably maximum) L1 of the profile is preferably between 10 and 30mm and preferably between 15 and 25mm.

[0161] The thickness (preferably maximum) E3 of the profile is preferably that E2 of the sealing part36.

[0162] The width L3 of the fixing part 34 is preferably between 10 and 25mm and preferably between 15 and 20mm.

[0163] The thickness El of the wall 40 is preferably between 1 and 4mm, and preferably between 1.5 and 2.5mm.

[0164] We now refer to the embodiment of [Fig. 13] which differs from the embodiment of figures 8 and 9 essentially by the shape of its face 36a which is here saw-toothed.

[0165] The sealing portion 36 comprises, at this face 36a, a series of longitudinal teeth separated from each other by longitudinal grooves. In the example shown, the number of teeth is four.

[0166] The sawtooth shape increases the compression range without increasing the force required to compress it. This has the advantage of improving sealing on very rough surfaces, such as cement and rubble, and facilitating the installation of the joinery on the frame.

[0167] Finally, reference is made to the embodiment of [Fig. 14] which differs from the embodiment of figures 8 and 9 essentially by the shape of its face 36a which is convex here.

[0168] The caulking part 36 may include an internal relief cavity to give this part some flexibility in compression.

[0169] The convex shape increases the compression range and the contact surface without increasing the force required to compress it. Indeed, when the convex part is compressed, the material "flashes" and expands at the sides (blue arrows). This has the advantage of improving sealing on smooth surfaces such as concrete or surfaces with variations in the contact plane such as brick, and of facilitating the installation of the window or door frame.

[0170] In yet another variant, face 36a could be concave. It could then be considered as a face having a single longitudinal groove separating two longitudinal teeth.

[0171] In the various embodiments, the fixing parts 34 and the sealing parts 36 are connected to each other and supported against each other on a first surface 39a which has a width L5, or even on a second surface 39b which has a height H3. The surfaces 39a, 39b are here located in the rebate 39 and are perpendicular to each other.

[0172] The width L5 is preferably between 2 and 10mm and preferably between 3 and 8mm.

[0173] The height H3 is preferably between 1 and 5mm, and for example between 2 and 4mm.

[0174] The present invention offers several advantages such as:

[0175] - the application of a seal at the interface between the frame and the joinery,

[0176] - compensation for defects in the frame,

[0177] - improving the quality of joinery installation,

[0178] - improving the seal at the frame / joinery interface,

[0179] - the removal of sealants and adhesives,

[0180] - the simplification of the recycling of the subframe after removal of a joinery, due to the nature of these materials, etc.

Claims

Demands

1. A sealing subframe (30) between a window / door frame (10) and a frame (12), the subframe (30) being able to be mounted on an external periphery of a frame (18) of the window / door frame (10) before the frame (18) is installed on the frame (12), the subframe (30) defining a closed contour and comprising elongated profiles (32), at least some of which are joined to each other by their longitudinal ends (32a), characterized in that each of the profiles (32) is made by coextrusion and comprises two longitudinal parts (34, 36) joined to each other by coextrusion, a first part, called the fixing part (34), being made of a first plastic or composite material having a first hardness and being able to allow the fixing of the profile (32) to the frame (18), and a second part, called the sealing part (36),being made of a second plastic or composite material having a second hardness lower than the first hardness and being suitable for sealing between the frame (18) and the structure (12).

2. Preframe (30) according to claim 1, wherein the preframe (30) has a general rectangular shape and comprises three profiles (32b, 322, 323) joined together by their longitudinal ends (32a), and a fourth independent profile (324).

3. Preframe (30) according to claim 1, wherein the preframe (30) has a general rectangular shape and comprises four profiles (32i, 322, 323, 324) joined together by their longitudinal ends (32a).

4. Pre-frame (30) according to any one of claims 1 to 3, wherein the second part (36) is adapted to be interposed between the frame (18) and the frame (12) and comprises a first longitudinal face (36a) adapted to come into contact with the frame (12), and a second longitudinal face (36b) adapted to come into contact with the frame (18).

5. Preframe (30) according to claim 4, wherein the first face (36a) is flat, concave, convex, or saw-toothed, and / or the second face (36b) is flat.

6. Preframe (30) according to any one of claims 1 to 5, wherein the first part (34) is capable of being fixed by itself, by hooking, snapping or pinching, to the frame (18).

7. Pre-frame (30) according to any one of claims 1 to 5, wherein the first part (34) is suitable for being fixed by fasteners, such as screws (52), to the frame (18).

8. Preframe (30) according to any one of the preceding claims, wherein the longitudinal ends (32a) of the profiles (32) are joined together by overmolded angles (38).

9. Preframe (30) according to claim 8, wherein the overmolded angles (38) are made of the same material as the second part (36) of each of the profiles (32).

10. Preframe (30) according to any one of the preceding claims, wherein the first part (34) has: - a Shore D hardness greater than or equal to 40, preferably greater than or equal to 50, more preferably greater than or equal to 55, or - a Shore A hardness greater than or equal to 85, preferably greater than or equal to 95, more preferably greater than or equal to 100.

11. Preframe (30) according to any one of the preceding claims, wherein the second part (36) has: - a Shore 00 hardness less than or equal to 100, preferably less than or equal to 50, and more preferably less than or equal to 30, or - a Shore A hardness less than or equal to 75, preferably less than or equal to 30, and more preferably less than or equal to 10.

12. Assembly comprising a joinery (10) and a pre-frame (30) according to any one of the preceding claims, the joinery (10) comprising a frame (18) around which the pre-frame (30) is mounted before being placed on a frame (12).

13. Method of installing a joinery (10) on a frame (12) by means of a subframe (30) according to any one of claims 1 to 11, wherein it comprises the following steps: a) fixing the subframe (30) around a frame (18) of the joinery (10), so as to form an assembly, and b) installing and fixing the assembly on the frame (12), the second part (36) of each of the profiles (32) being interposed between the frame (18) and the frame (12) all around the joinery (10).