FR3045706A1 - TRUNK FOR RECEIVING A CLOSURE AND / OR OCCULTATION SYSTEM, AND ITS SUBFACE WITH END CAP (S) - Google Patents

Abstract

The invention relates to a trunk (1) for receiving a closure and / or occultation system, intended to be recessed in a wall cavity (2) formed at the upper end of a switchboard. bay (3). The trunk (1) comprises an underside (6) which comprises a rectangular panel (10) and at least one finishing tip (11) equipping at least one of the side edges (103) of said rectangular panel (10). Said at least one finishing tip (11) cooperates with said rectangular panel (10) by means of assembly means (107, 115) which allow a maneuver in the deployed position of said finishing nozzle (11) with respect to said border lateral side (103), so as to close a lateral space (E) separating said lateral edge (103) of said rectangular panel (10) and a side wall (31) facing said array of bay (3).

Description

Technical field to which the invention relates

The present invention relates to the general field of the building. It relates in particular to the chests for hosting closing systems and / or occultation, intended to be embedded in a wall cavity formed at the upper end of an array of bay.

Technological background

Construction windows, in particular doors or windows, are conventionally equipped with closure systems (for example shutters) and / or concealment (for example sunshades or blinds).

These systems are advantageously adapted to retract entirely into a chest which is embedded in a wall cavity formed at the upper end of the array of bay.

Some types of chests, commonly referred to as "chests", are fully integrated into the receiving wall cavity. Other types of chests, usually called "half-lintel chests", are constituted by a half-lintel of brick or concrete, associated with a complementary partial formwork for example plastic, generally integral with the door or associated window .

Such safes generally have a removable underside, which remains apparent and accessible at the upper portion of the bay board, particularly for the control and maintenance operations of the shutter.

The side edges of this underside must then marry the side walls of the bay board, to ensure an optimal finish.

For this, the operator is nowadays commonly obliged to delign (cut) the soffit on the site, just before its assembly, such a cut-out also making it possible to recover any squared defects of the array of bay.

However, such cutting operations significantly increase the time required for complete assembly of the trunk. In addition, in the case of a cutting error or an approximate cut, there is a risk of day between the lateral border of this underside and the side wall opposite the array of bay.

There is therefore a need for new structures of chests that avoid deligning the soffit on the site, or even to resume the squareness defects of the array bay.

Object of the invention

The present invention relates to a new trunk structure, intended to be embedded in a wall cavity formed at the upper end of an array of bay. It also relates to new equipment for such a trunk structure, namely an underside provided with end cap (s).

This box includes an underside bounded by two longitudinal edges and two side edges; and according to the invention, this underside comprises: - a rectangular panel defined by two longitudinal edges and two side edges, and - at least one finishing piece equipping at least one of the lateral edges of said rectangular panel; which at least one end-piece cooperates with said rectangular panel by means of assembly means which allow a maneuver in the deployed position of said end-piece relative to said associated lateral edge, so as to close a lateral space intended to separate the side edge of the rectangular panel and a side wall facing the array of bay.

The underside equipping the trunk therefore avoids the usual operations delignage on the site, and possibly also to compensate for squareness defects of the array bay. Other non-limiting and advantageous features of the trunk according to the invention, taken individually or in any technically possible combination, are the following: said underside comprises two endpieces, each equipping one of the lateral edges of said rectangular panel; said at least one finishing nozzle comprises: an outer face, intended to bear on a side wall facing the array of bay, and a lower face, intended to extend at a lower face of said rectangular panel, and this at least between said side edge of said rectangular panel and said side wall facing the array of bay; said trunk comprises two lateral cheeks, and at least one of said lateral cheeks comprises a lower return cooperating with said at least one finishing nozzle in the deployed position by means of fixing means; the fastening means are then advantageously chosen from fasteners or interlocking means by elastic deformation; the trunk is chosen from a half-lintel box and a tunnel box; - The trunk has a closing system and / or occultation which is selected from a roller shutter, a sunshade and a blind.

According to a preferred embodiment, said means for assembling between the finishing tip and the rectangular panel are arranged to allow the translational maneuver of said finishing nozzle with respect to said associated lateral edge of said rectangular panel, in a direction parallel to said longitudinal borders of said rectangular panel.

In this case, said translational assembly means advantageously comprise: at least one opening opening which opens out at one of the lateral edges of said rectangular panel, which at least one opening orifice comprises a longitudinal axis extending parallel to said longitudinal borders of said rectangular panel, and - at least one projecting member equipping said at least one finishing tip, introduced into said at least one opening opening and intended to slide along the length of the latter.

Preferably, firstly, the lateral edges of the rectangular panel each comprise two opening holes and, secondly, said at least one finishing tip comprises two projecting members complementary to said orifices.

Always preferably, said at least one finishing tip comprises two flaps at the square: - a side flap having an inner face provided with said at least one projecting member and said outer face intended to bear against the side wall of the table of bay, and - a lower flap, arranged subjacent and adjoining a lower face of said rectangular panel to form said lower face of said finishing tip.

Still more preferably, the assembly means are arranged to further allow rotation of said finishing tip relative to said associated lateral edge, so as to impart a free play in rotation, or quasi-rotation, to said at least one finishing tip, according to an axis of rotation perpendicular to a general plane of said rectangular panel.

In this case, said at least one opening opening advantageously comprises: a height dimension which corresponds, with play, to the height dimension of the complementary projecting element, and a dimension in width which is greater than the dimension in width of said complementary projecting member.

The present invention also relates to the soffit as such. This underside is delimited by two longitudinal edges and two lateral edges, and it comprises: a rectangular panel delimited by two longitudinal edges and two lateral edges, and at least one finishing piece equipping at least one of the lateral borders of said rectangular panel, which at least one finishing tip cooperates with said rectangular panel by means of assembly means which allow a maneuver in the deployed position of said finishing nozzle with respect to said associated lateral edge, so as to close a lateral space for separating said lateral edge of said rectangular panel and a side wall facing said array of bay. The invention also relates to the bay board whose upper end has a wall cavity in which is embedded a chest as defined above. The invention also relates to the process for finishing and laying a chest according to the invention, reported in an upper cavity of an array of bay.

This method of finishing and laying comprises the following successive steps: - the supply of an underside comprising the rectangular panel equipped with the at least one finishing tip, - the laying of said underside on the trunk, - the maneuver in the deployed position of said at least one finishing nozzle so as, on the one hand, to bring it into abutment against the side wall facing said array of bay and, on the other hand, to mask a space separating said lateral edge of said rectangular panel and said side wall opposite said array of bay, - and optionally the locking in the deployed position of said at least one end cap, advantageously by the implementation of the fastening means with said side cheek facing.

Detailed description of an example of realization

The following description with reference to the accompanying drawings, given by way of non-limiting examples, will make it clear what the invention consists of and how it can be achieved.

In the accompanying drawings: FIG. 1 is a schematic and partial view of an array of bay, oriented on the interior side of the building, which comprises a wall cavity in which is embedded a half-lintel box provided with an underside according to the invention; this view is accompanied by a partial and enlarged view showing the attachment of one of the end caps of the underside, in the deployed position, with one of the side cheeks of the trunk; FIG. 2 is a partial view of the bay board according to FIG. 1, oriented here on the external side and showing the arrangement of one of the finishing tips of the underside with respect to the side wall opposite the bay painting; FIG. 3 is a general and perspective view of the underside intended to equip the box according to FIGS. 1 and 2, in which the finishing tips are dissociated with respect to the rectangular panel; FIG. 4 is a general perspective view of one of the finishing tips; - Figure 5 is a side view of the finishing nozzle according to Figure 4, with a partial and enlarged view of one of its connecting projecting members; FIG. 6 shows the underside according to FIG. 3, in which the finishing tips are attached at each of the lateral edges of the rectangular panel and are arranged in the deployed position; - Figure 7 corresponds to the underside of Figure 6, wherein the end caps are now in the retracted position; - Figure 8 is a sectional view of the soffit according to Figures 6 and 7, according to a vertical sectional plane passing through the projecting members of one of the end caps; - Figures 9 and 10 illustrate two steps of the procedure of laying the underside, to obtain the safe according to Figures 1 and 2.

The trunk 1 according to the invention, shown in particular in Figures 1 and 2, is recessed and fixed in a wall cavity 2 formed at the upper end of a board array 3.

The bay table 3 corresponds to an opening of square or rectangular shape intended to receive a joinery 4, for example a window or a door, as partially shown in FIG. 2.

The array of bay 3 is formed by a wall M, possibly associated with insulation and a finishing facing.

This array of bay 3 comprises in particular two side walls 31 opposite, which preferably extend vertically and parallel to one another (only one of them is visible in Figures 1 and 2).

These side walls 31 are advantageously intended to receive in particular the frame of the joinery 4 and P profiles for vertical guidance of the closing / concealing system S for fitting the trunk 1 (Figure 2).

For its part, the wall cavity 2 is delimited by a lintel L, in this case a half-lintel.

As shown in FIG. 1, this wall cavity 2 comprises in particular: two lateral walls which advantageously extend vertically and in parallel with each other, each offset on the side with respect to one another; side walls 31 of the bay board 3, - a front wall 22, on the outside of the building, and - a lower opening 23, facing the ground and at the upper end of the side walls 31 of the bay board 3.

The chest 1, attached in this wall cavity 2, integrates the closing / concealing system S (not shown in detail, only a lower edge of this system is shown in Figure 2).

Such a trunk 1 can thus accommodate the following systems: a closure system, for example of the shutter type (that is to say a rolling shutter apron associated with a motorized drum), and / or occultation, for example type sunshade orientable (including various blades operable vertically and inclination) or a blind.

The trunk 1 has a general box shape, comprising the following different parts assembled together: - two lateral cheeks 5 (one of them is visible in Figure 1), each formed at one of the side walls 21 of the wall cavity 2, - a removable sub-face 6, forming the lower wall of the trunk 1 and formed at the lower opening 23 of the wall cavity 2, - a frontal longitudinal member 7, also called "longitudinal profile frontal >>, extending between the lateral cheeks 5 and formed at the level of the front wall 22 of the wall cavity 2, and - an inner closing wall 8 (visible in Figure 2), which extends between the side cheeks 5 and which is arranged at a distance and facing the front wall 22 of the wall cavity 2, in the extension of the joinery 4. The frontal longitudinal member 7 consists for example of a profile, advantageously made of a metallic material or plastic.

This frontal longitudinal member 7 is attached at the lower edge of the front wall 22 of the wall cavity 2 (visible in particular in Figures 1,9 and 10).

The inner closing wall 8 consists for example of a profiled panel, made of plastic material.

The underside 6 has a generally rectangular shape delimited by two longitudinal edges, one outside 61 and the other inside 62, and two lateral edges 63.

The outer longitudinal edge 61 is secured to the frontal longitudinal member 7, as described below in connection with FIG. 10.

The inner longitudinal edge 62 is itself free (extending at a distance from the lower edge of the inner closing wall 8 and the joinery 4), so as to delimit a passage G within the lower opening 23 of the wall cavity 2 which allows the circulation of the closing / occultation system S between the trunk 1 and the array 3 (Figure 2).

The lateral edges 63 of the sub-face 6 are each intended to fit one of the side walls 31 facing the array of bay 3 (Figures 1 and 2).

According to the invention, these lateral edges 63 of the underside 6 are able to conform to the side walls 31 of the bay board 3, without the need to delineate this sub-face 6 on site. The underside 6 is also able to take up any squareness defects of this array of bay 3. For this purpose, as shown in FIGS. 3 to 8, the underside 6 is composed here of a panel rectangular 10 equipped with two end pieces 11.

The finishing tips 11, forming the lateral edges 63 of the sub-face 6, are movable apart and angularly relative to the associated rectangular panel 10.

This technical characteristic then allows the installer to directly and automatically adapt the lateral edges 63 of this sub-face 6, in length and angularly, with respect to the side walls 31 of the array of bay 3.

In this case, the rectangular panel 10 and the end caps 11 may (or may not) be made of the same material and with the same finish (including the same color), to ensure an optimal connection between them and an optimal perceived quality .

The rectangular panel 10 is here in the form of a profile obtained by extrusion. It is delimited by: two longitudinal borders, one outer 101 and the other inner 102, which are intended to form respectively the outer longitudinal 61 and inner 62 edges of the sub-face 6, and two lateral edges 103, each intended to come at or near one of the side edges 63 of the underside 6 and to cooperate with one of the finishing tips 11.

The rectangular panel 10 also has two opposite surfaces, one upper 104 and the other lower 105, extending parallel and at a distance from each other (Figure 8).

These two opposite surfaces 104, 105 are formed, respectively, by an upper skin 1041 and a lower skin 1051.

The outer longitudinal edge 101 of the rectangular panel 10 has a groove (or groove) longitudinal 106, extending over its entire length (Figure 8).

This longitudinal groove 106 is intended to cooperate with the frontal longitudinal member 7 above, here by interlocking, to participate in the assembly of the sub-face 6 on the trunk 1.

The lateral edges 103 of the rectangular panel 10 each comprise through-holes 107. Two of these outlets 107 are here intended to cooperate with complementary structures carried by the end-pieces 11.

For this, each opening opening 107 here has a section of generally rectangular shape, defining a longitudinal axis 107 'extending parallel to the longitudinal edges 101, 102 of the rectangular panel 10 (Figure 3).

Each opening orifice 107 extends along the length of the rectangular panel 10, between its two lateral edges 103.

Each opening opening 107 is further delimited by a set of surfaces (FIG. 8), namely: an upper surface 1071, formed by the upper skin 1041, a lower surface 1072, formed by the lower skin 1051, and two surfaces. 1073, which are formed by partitions extending between the two skins 1041, 1051 and perpendicular thereto.

Finishing tips 11, shown in more detail in Figures 3 to 5, each include a generally angled portion.

Each endpiece 11 thus comprises two flaps (or plates) which are arranged at right angles to one another and which are connected by an assembly line.

Each finishing tip 11 thus comprises a lateral flap 111 and a lower flap 112 arranged in planes perpendicular to each other.

The lateral flap 111 has a contour corresponding to the contour of the lateral edge 103 of the rectangular panel 10.

This lateral flap 111 comprises two opposite faces, namely: an inner face 1111 intended to come opposite one of the lateral edges 103 of the rectangular panel 10 (FIGS. 3 to 5), and an outer face 1112 (FIG. 3), here forming the lateral face of this finishing nozzle 11 and intended to bear on one of the side walls 31 of the rack board 3 (Figure 1).

The inner face 1111 of this side flap 111 is provided with a part of the means for its mobile assembly with the rectangular panel 10.

In this case, this inner face 1111 has salient members 115, here two in number, each extending from the inner face 1111 of the side flap 111.

The projecting members 15 are intended to be introduced into one of the through openings 107 of the rectangular panel 10 and are intended to slide over part of the length thereof.

For this, these projecting members 15 here each have a general shape of rectilinear rod, extending along a longitudinal axis 115 'which is perpendicular to the associated side shutter 111.

The projecting members 15 are arranged parallel to each other and at a distance from one another.

Each projecting member 15 thus has two opposite ends: a first end which is connected to the associated lateral shutter 111, and a second free end.

These projecting members 115 have an outer surface of rectangular constant section, comprising an upper face 1151, a lower face 1152 and two side faces 1153.

The height dimension of each protruding member 115 (distance between the upper faces 1151 and lower 1152) corresponds, with play, to the height dimension of its complementary opening orifice 107 (distance between the upper faces 1071 and lower 1072).

Such a dimension ensures optimal translation guidance of the finishing tip 11, in a direction D extending in a plane passing through the longitudinal axes 107 'of the through holes 107 (corresponding to the general plane of the rectangular panel 10).

The width dimension of each protruding member 115 (distance between the lateral faces 1153) is smaller than the width dimension of its complementary opening orifice 107 (distance between the lateral faces 1073).

Such a dimension gives the assembly means a maneuverability in the deployed position with a degree of freedom in rotation, that along an axis of rotation perpendicular to a general plane of the rectangular panel 10.

For its part, the lower flap 112 is intended to be arranged in an underlying way and adjacent to the lower face 105 of the rectangular panel 10.

It comprises in particular a front end conforming to the outer longitudinal edge 101 of the rectangular panel 10.

The bottom flap 112 has two opposite faces: - an upper face 1121, intended to come opposite (and to marry) the lower face 105 of the rectangular panel 10, and - a lower face 1122 opposite, forming the lower face of this endpiece finishing 11.

This lower flap 112, and in particular its lower face 1122, is intended to extend at the lower face 105 of the rectangular panel 10, at least in the space separating the lateral edge 103 of the rectangular panel 10 and the side wall. 31 next to Bay Table 3.

The length of this lower flap 112 is thus advantageously equal to, or at least approximately equal to, the width of the rectangular panel 10.

The upper face 1121 of this lower flap 112 extends opposite and at a distance from the lower face 1152 of the projecting members 115. The space F formed between the upper face 1121 of the lower flap 112 and the lower face 1152 of the projecting members 115 corresponds, advantageously to the game, to the thickness of the lower skin 1051 of the rectangular panel 10.

In practice, to obtain the underside 6, the two endpieces 11 are mounted on the rectangular panel 10.

For this, each endpiece 11 cooperates with the rectangular panel 10 through the assembly means 107, 115 above.

In this case, each end cap 11 is attached so that each of its projecting members 115 comes to be introduced into one of the through holes 107 of the rectangular panel 10.

Each protruding member 115 is thus slidably or translationally operated over a portion of the length of one of the through openings 107 of the rectangular panel 10.

During this assembly, the flaps 111, 112 of the finishing nozzle 11 cooperate with the lateral edge 103 of the rectangular panel 10, namely: the inner face 1111 of the lateral flap 111 extends opposite the lateral edge 103 of the rectangular panel 10, and - the upper face 1121 of the lower flap 112 is positioned underlying and adjacent to the lower face 105 of the rectangular panel 10.

Still during this assembly, the lower skin 1051 of the rectangular panel 10 is housed in the space F separating the upper face 1121 of the lower flap 112 and the lower face 1152 of the projecting members 115.

In this underside 6 according to the invention, the assembly means 107, 115 then confer a degree of freedom in translation to the finishing tip 11 relative to the associated lateral edge 103 of rectangular panel 10, as illustrated by FIG. arrow D (Figure 2). The end-piece 11 is thus operable between two positions with respect to the associated lateral edge 103: an extended position (FIG. 6), in which its lateral flap 111 extends at a distance from the associated lateral edge 103 of the rectangular panel 10, and a retracted position (FIG. 7), in which its lateral flap 111 bears against this lateral edge 103.

In the deployed position, the projecting members 115 extend, for a part, between said lateral flap 111 and the lateral edge 103 and, for another part, within the complementary through apertures 107 (to maintain the endpiece 11). In the retracted position, the projecting members 115 extend entirely within the complementary through apertures 107.

These assembly means 107, 115 thus allow an adjustment of the length of the sub-face 6, without requiring the usual operation of deliming once on the site.

The assembly means 107, 115 also allow here a maneuver in the deployed position of the projecting members 115 with a free play in rotation, along the vertical axis of rotation, so as to automatically recover the squareness defects of the array of bay 3 (if they exist).

On the site, this underside 6 can then be reported on the chest 1 which is previously implanted in its upper cavity 2.

As schematically illustrated in FIG. 9, this pose is obtained here by a maneuvering of the underside 6 which aims to fit its outer longitudinal edge 101 (and in particular its groove 106) with the frontal longitudinal member 7.

Preferably, the finishing tips 11 have been previously operated in the retracted position (corresponding to Figure 7).

In addition, the rectangular panel 10 may be previously cut for a general adjustment in length.

Once properly nested, this underside 6 closes the lower opening of the chest 1 but also the lower opening 23 of the wall cavity 2 (Figures 1 and 10). At this moment, there is potentially a lateral space E separating, on the one hand, the lateral edge 103 of the rectangular panel 10 (and thus the lateral edge 63 of the sub-face 6) and, on the other hand, the lateral wall 31 next to Bay Table 3.

The installer can then maneuver the corresponding finishing tip 11, in the deployed position, so as to bring it into abutment against the side wall 31 opposite the array of bay 3 and thus to hide the lateral space E separating the lateral border 103 of the rectangular panel 10 and the side wall 31 facing the array of bay 3 (Figure 1).

This maneuver can possibly be carried out manually.

With this abutment: - the outer face 1112 of the side flap 111 bears against the side wall 31 opposite the array of bay 3, and - the lower face 1122 of the lower flap 112 extends, for a part, facing of the lower face 105 of the rectangular panel 10 and, for another part, in the lateral space E which separates the lateral edge 103 of the rectangular panel 10 and the side wall 31 facing the array of bay 3.

This lower face 1122 of the lower flap 112 is offset in height relative to the lower face 105 of the panel 10, a distance corresponding to the thickness of the lower flap 112.

Each finishing tip 11 is thus able to ensure the closure of one of the lateral spaces E, as illustrated in particular in FIG. 1. The finishing tips 11 also make it possible to take back any squaring defects in the bay board. 3.

Preferably, each finishing tip 11 is locked in its deployed position.

This locking is performed in this case by the implementation of fixing means V cooperating with the side cheek 5 opposite.

For this, as shown in Figure 1, each side cheek 1 has a lower return 51 having a plate 52 projecting from the side wall 31 of the associated array 3 array.

The fastening means V used then advantageously consist of pieces of hardware (at least one screw) which are attached through the lower flap 112 of the finishing endpiece 11 and the plate 52, and possibly also through the rectangular panel 10.

Alternatively, the fixing means could consist of an interlocking system by elastic deformation (or clipping).

In this case, the plate 52 of the lateral cheek 5 may for example comprise an interlocking structure by elastic deformation with the lateral flap 111 of the finishing tip 11.

Alternatively, not shown, the underside 6 according to the invention could equally well equip a tunnel box.

Claims (12)

1. Safe for receiving a closure and / or concealment system, intended to be embedded in a wall cavity (2) formed at the upper end of an array of bay (3), which chest (1) comprises an underside (6) delimited by two longitudinal edges (61, 62) and two lateral edges (63), characterized in that said underside (6) comprises: - a rectangular panel (10) ) delimited by two longitudinal edges (101, 102) and by two lateral edges (103), and - at least one finishing tip (11) equipping at least one of the lateral edges (103) of said rectangular panel (10) for forming one of said side edges (63) of the underside (6), which at least one finishing endpiece (11) cooperates with said rectangular panel (10) by means of assembly means (107, 115) which allow a maneuver in the deployed position of said finishing nozzle (11) with respect to said lateral edge ( 103) associated. 2. Chest according to claim 1, characterized in that said underside (6) comprises two finishing tip (11), each equipping one of the side edges (103) of said rectangular panel (10). 3. Chest, according to any one of claims 1 or 2, characterized in that said at least one finishing tip (11) comprises: - an outer face (1112) intended to bear on a side wall (31) facing the bay table (3), and - a lower face (1122), intended to extend at a lower face (105) of said rectangular panel (10), and this at least between said side edge ( 103) of said rectangular panel (10) and said side wall (31) facing the array of bay (3). 4. Chest, according to any one of claims 1 to 3, characterized in that the connecting means (107, 115) are arranged to allow the translational maneuvering of said finishing nozzle (11) relative to said side edge (103) associated in a direction (D) parallel to said longitudinal edges (101, 102) of said rectangular panel (10). 5. Safe, according to claim 4, characterized in that said connecting means (107, 115) in translation comprise: - at least one opening opening (107) which opens at one of the side edges (103) said rectangular panel (10), which at least one opening hole (107) has a longitudinal axis (107 ') extending parallel to said longitudinal edges (101, 102) of said rectangular panel (10), and - at least one projecting member (115) equipping said at least one finishing nozzle (11), introduced into said at least one opening hole (107) and intended to slide along the length thereof. 6. Safe according to claim 5, characterized in that, on the one hand, the lateral edges (103) of the rectangular panel (10) each comprise two opening holes (107) and, on the other hand, said at least one finishing tip (11) comprise two projecting members (115) complementary to said orifices (107). 7. Chest, according to any one of claims 5 or 6, characterized in that said at least one finishing tip (11) comprises two flaps to the square: - a side flap (111) having an inner face (1111 ) provided with said at least one protruding member (115) and said outer face (1112) intended to bear against the side wall (31) of the bay board (3), and - a lower flap (112), arranged under jacent and adjoining a bottom face (105) of said rectangular panel (10) to form said bottom face of said finishing tip (11). 8. Safe, according to any one of claims 4 to 7, characterized in that the connecting means (107, 115) are arranged to allow further maneuver in rotation of said end cap (11) relative to said border lateral member (103) associated so as to impart a free play of freedom in rotation to said at least one end-piece (11), along an axis of rotation perpendicular to a general plane of said rectangular panel (10). 9. Safe, according to any one of claims 1 to 8, characterized in that it comprises two side flanges (5), and in that at least one of said side flanges (5) has a lower return (51). ) cooperating with said at least one finishing nozzle (11) in the deployed position by means of fixing means (Y). 10. Safe, according to any one of claims 1 to 9, characterized in that it comprises a closure system and / or occultation which is selected from a roller shutter, a sunshade and a blind. 11. Subframe for a trunk for receiving a closure and / or concealment system for sealing a lower opening of a wall cavity (2) located at the upper end of a panel bay (3), which underside (6) is delimited by two longitudinal edges (61, 62) and by two lateral edges (63), characterized in that said underside (6) comprises: - a rectangular panel (10) delimited by two longitudinal edges (101, 102) and by two lateral edges (103), and - at least one finishing tip (11) equipping at least one of the lateral edges (103) of said rectangular panel (10). ) to form one of the lateral edges (63) of said sub-face (6), which at least one end-piece (11) cooperates with said rectangular panel (10) by means of assembly means (107, 115) which allow a maneuver in the deployed position of said finishing nozzle (11) relative to said border lateral re (103) associated. 12. Process for finishing and laying a trunk (1) according to any one of claims 1 to 10, reported in a wall cavity (2) of an array of bay (3), which finishing process and laying method comprises the following successive steps: - the supply of an underside (6) comprising the rectangular panel (10) equipped with the at least one end-piece (11), - the laying of said underside (6) on the trunk (1), - the maneuver in the deployed position of said at least one finishing nozzle (11) so, on the one hand, to bring it into abutment against the side wall (31) facing said array of bay (3) and, on the other hand, to mask a lateral space (E) separating said lateral edge (103) of said rectangular panel (10) and said lateral wall (31) facing said array of bay (3), - and optionally locking in the deployed position of said at least one finishing piece (11) movable, preferably by the implementation of the means of e fixation (V) with said lateral cheek (5) facing.