FR2839818A1 - Box with clamps used to embed an electric apparatus, e.g. switch or power outlet, into a hollow closure in a building, has pivoting clamps each allowed to move in translation and/or rotation - Google Patents

Abstract

The box (1) with clamps (4) has a cylindrical part (2) closed by a bottom (3). It has two pivoting clamps, each subjected to a translatory movement and/or a rotation movement, each clamp also activated by a screw (5) for fixing the box in the hollow closure (100), the screwing of this screw allowing the simultaneous fixing of the electrical apparatus in the box, and to grip the hollow closure between the facade (20) of the electrical apparatus and the clamps, the clamps and the box forming a mono-block assembly.

Description

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  The flanged bowl for hollow partitions The present invention relates to a flanged housing which is fixed in a hollow partition, in order to embed in this partition an electrical apparatus,

  s such as, for example, a switch or an electrical outlet.

  It is known from many flanged boxes for hollow partitions, intended for fixing the built-in electrical equipment and allowing the installation of the electrical equipment in a safe, secure and durable manner, in particular when the latter are windy. fixed by means of screws present on the boxes. The electrical equipment intended to be placed in the housing comprises, in general, a mechanism which is inserted in the housing, and a facade comprising an interface, and two oblong holes intended for fixing the switchgear on the housing. The interface consists, for example, of a button in the case where the electrical equipment is a switch, or

  s two wells in the case where the electrical equipment is an electrical outlet.

  The axis of symmetry of each oblong hole in the front, describes an arc of a circle.

  The two oblong holes are, in general, arranged facing each other on the front, face of the electrical equipment, the axis of this circular arc being orthogonal to the front, face of the electrical equipment, such so that the axes of the arcs of a circle described by the axes of symmetry of the oblong holes wind coincide along an axis, which will be called main, and wind orthogonal to the fagade of the electrical apparatus. At least one end of each oblong hole ends in a circular orifice of axis orthogonal to the front of the electrical equipment. The hole diameter is sufficient to allow a ViS head to pass through the circular hole. When the screws of the housing are partially unscrewed, the electrical equipment is inserted into the housing, the screws of the housing penetrating into the circular holes in the front of the electrical equipment. The electrical equipment is then easily set up in exer, cant a rotation of the latter around the main axis. The screws o of the boftier are then tightened to ensure a plumb position and a maintenance of the electrical equipment. The housings include means

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  for fixing to the partition, of the flange type, actuated by screws. The flanges are supported on the rear of the hollow partition after the partition has been

  drilled to the diameter of the case with, for example, a hole saw.

  In general, the electrical equipment is fixed to this type of housing with the aid of a first pad of screws, and the flanges of the housing are operated with the aid of a second pad of screws. to fix the housing on the partition. In this type of housing, the flanges are separate from the housing. The installer must, when installing the box, actuate the maneuvering screws of the flanges to fix the box to the partition, then after having connected the electrical equipment to the o electrical conductors emerging inside of the casing, fix the apparatus by the screws of the said casing. The installation of a box of this type therefore involves at least two operations, which results in a relatively complicated installation and a waste of time. From an industrial point of view, the manufacturers of such cases are forced to develop complex machines in order to assemble the two screw pads and the flanges to the housing.

  which causes significant costs impact on the sale price.

  Furthermore, many boxes with flanges for hollow partitions have, on their outer periphery, near the open edge of the housing, a collar making it possible to prevent the depression of the housing in the partition during its fixing. The presence of this flange leads to the existence of a space between the front of the electrical equipment and the partition. This has the drawback that the front of the electrical equipment is not correctly pressed against the partition, causing a clearance between the front of

  the electrical equipment and the partition.

  The purpose of the present invention is therefore to overcome certain drawbacks of the prior art by proposing a flanged housing for hollow partitions, which is simple and quick to install, which is inexpensive to manufacture, and which allows perfect plating of the 'electrical equipment against the partition. n / a This object is achieved by a flanged box comprising a cylindrical part closed by a bottom, for fixing an electrical apparatus in a hollow partition, characterized in that it comprises at least two flanges

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  articulated, each flange being able to undergo a translational movement and / or a rotational movement, and each flange being actuated by a screw to fix the casing in the hollow partition, the screwing of said screw simultaneously making it possible to fix the apparatus electric in the casing and pinch the hollow partition between the fa, cade of the electrical equipment and the flanges,

  flanges and the casing forming a monobloc assembly.

  According to another particular feature, each flange is located in an opening in the cylindrical part and delimited by a "U" cut, each flange being connected to the bottom by an arc-shaped piece which is o flexible, allowing the rotation of the flange towards the inside or the outside of the housing around the arc-shaped part, to allow the insertion of the housing in a per, cylindrical cage of the hollow partition, or to remove the housing from this per , cage, the diameter of said drilling being substantially equal to the diameter

  outside of the cylindrical part of the housing.

  s According to another particular feature, each flange comprises a tongue extending the arc-shaped part, said tongue being extended by a staircase part at the free end of which a shoulder is formed substantially parallel to the bottom of the housing, I tongue + staircase part being substantially parallel to the generator of the part

o cylindrical.

  According to another particular feature, each flange comprises at least one ramp formed perpendicular to the shoulder and to the tongue and staircase assembly to form an angle, the ramp making it possible to

  facilitate the insertion of the housing into the per, cage of the hollow partition.

  s According to another particularity, a well, tapped inside, is formed in the mass of the staircase part and of the tongue of each flange, and

accommodates a screw.

  According to another particularity, a pad of pawns is formed perpendicular to the shoulder of each flange, against the face opposite to that formed against the staircase part, each pawn of the pad of pawns

  being located on either side of the putts.

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  According to another particular feature, the casing comprises at least two rounded W-shaped parts, the central portion of a rounded W-shaped piece comprising two bosses to hold a screw housed in the space available in the central part, each of the bosses being located on either side of the opening of the central part, and each piece in

  rounded W shape being associated with a flange.

  According to another particular feature, the casing being at rest, the well of each flange is located in the axis of the central part of the associated W-shaped piece rounded, and the check flange pins are located in the axis of

  o extreme parts of the associated round W-shaped part.

  According to another particular feature, the rear of the electrical apparatus being inserted into the housing recessed in the hollow partition, each screw, inserted in a means of fixing the electrical apparatus, is screwed into the well associated with said screw, and each flange undergoes a translational movement along the axis of the screw, intermarn ['the insertion of each padre of pawns in the space available in the end parts of the piece in the shape of associated W rounded to ensure the grip in sandwich of the partition between the shoulders of the flanges and the rear face of the fa, cade of

electrical equipment.

  o According to another particularity, the means of fixing the electrical apparatus wind at least two oblong holes whose axis of symmetry describes an arc of a circle and whose end ends in a circular portion of diameter greater than the diameter of the head of screws, the distance between the oblong holes

  being substantially equal to the center distance of the screws.

  According to another particular feature, the casing has pins located on the outer periphery of the casing near its open edge to prevent it from turning relative to the hollow partition and ensuring its maintenance

  pending the installation of electrical equipment.

  According to another particular feature, the cylindrical part and / or the bottom of the housing includes one or more detachable lids to allow the connection of the electrical equipment to electrical wires located in the

hollow partition.

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  Another object of the invention is to provide a method for fixing an electrical apparatus in a hollow partition using the flanged casing.

according to the invention.

  This object is achieved by a process, characterized in that it comprises the following stages: - per, cylindrical cage of a hollow partition with a diameter substantially equal to the outside diameter of the housing, - detachment of at least one cover detachable from the casing, and insertion into the casing, by the opening left by the detached cover, from where the end of a sheath containing electrical wires located in the partition, - insertion of the casing in drilling, the opening of the housing being oriented towards the installer, each flange undergoing a rotation movement towards the interior of the housing to allow the housing to pass through the per, cage, - positioning of the housing in the partition by rotation of each flange towards the outside of the housing, each flange being located behind the partition, - connection of the electrical equipment with the end of the electrical wires accessible in the housing , - insertion of electrical equipment in the opening of the housing, where fa, ca of electrical equipment comprising fixing means, - insertion of a screw of the box ^ in each means of fixing the electrical equipment, and rotation of the fa, electrical block around the axis of the box 'tier, of a determined angle, - tightening of each screw, causing a translation of the associated flange along the axis of the screw, so that the hollow partition is sandwiched between the flanges and the rear face of the fa, cade of electrical equipment. Other features and advantages of the present invention

  will appear more clearly on reading the description below, made in

  n / a reference to the accompanying drawings, in which: - Figure 1 shows a perspective view of the flanged housing for hollow partitions according to the invention, - Figure 2 shows a perspective view in section along ABCD of substantially the half of the flanged housing according to the invention, - Figure 3 shows a perspective view of the front, the electrical equipment in one embodiment, - Figure 4 shows a perspective view in section according to ABCD, the box and the electrical equipment according to the embodiment

  of figure 3, implants on a hollow partition.

  The housing (1) with flanges (4) according to the invention, represented in particular in FIGS. 1 and 2, comprises a cylindrical part (2), closed on one side by a bottom (3), and at least two flanges (4). Each flange (4) is located in an opening made in the cylindrical part (2) and delimited by a cutout (9) in the shape of a U. In the case where two flanges (4) are present on the housing (1) , the flanges (4) are substantially located opposite one another. Each flange (4) is held in the housing (1) only by an arc-shaped piece (44), located between the edge of the flange (4) located near the bottom (3) and the bottom (3), the trots other edges of the flange (4) being separated from the rest of the housing (1) by the cutout (9) in a U shape. Two rectangular plates (10), perpendicular to the bottom (3 ), wind formed on the inner part of the cylindrical part (2), each of the plates (10) being on either side of the cutout (9) U-shaped. A piece in the shape of a rounded W (6 ) is formed against each pad of plates (10), between the top of each cutout (9) and the edge (15) of the cabinet (1)., Each rounded W-shaped piece (6) is perpendicular to the plates (10 ) and located on the side of the plates (10) opposite the bottom (3). The central part (61) of each rounded W-shaped part (6) comprises two bosses (610) located near the opening of the central part (61), making it possible to hold a screw (5) in space available in the central part (61). At each flange (4) is

  associated with a rounded W-shaped part (6).

  Check flange (4), shown in particular in Figure 2, so includes, in the extension of the arc-shaped piece (44), a tongue (42) rectangular extended by a stepped part (43), I ' together formed by the tongue (42) and the stepped part (43) forming,

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  at rest, with the bottom (3) of the housing at an angle of substantially 90. The staircase part (43) allows claw inking, which blows the means of fixing certain electrical equipment. As an extension of each staircase part (43) is formed a shoulder (41), substantially parallel to the bottom (3) of the housing (1). The shoulder (41) is partly located outside the cylindrical part (2) when the flange (4) is at rest. Two ramps (45) parallel wind formed against each shoulder (41) and against each tongue assembly (42) + stepped part (43) to form an angle, each ramp (45) of the pad of ramps thus formed being located, o for example, near each leg of the "U" of the cutout (9). A well (7) is hollow in the mass of the tongue assembly (42) + staircase part (43), substantially in the center of this assembly. A screw (5) is partially screwed into each well (7), ideally before insertion of the housing (1) in the hollow partition (100). Each well (7) is tapped by the screw (5) during the manufacture of the housing (1). The upper part of each screw (5) is then located in the central part (61) of the rounded W-shaped part (6), the bosses of each central part (61) making it possible to keep each flange (4) substantially parallel. to the axis of the cylindrical part (2) of the housing (1). Each shoulder (41) comprises a pad of pins (8) on its upper face. A pin (8) of each pad of pins (8) is located on each side of the well (7), so that each pin can penetrate, by translation of the flange (4) along an axis parallel to the axis of the screw (5), in the space available in the end parts (62) of the rounded W-shaped part (6), associated with the flange (4). The presence of the pins (8) s limits the rotational movements of each flange (4) along the axis of the screw (5) during screwing efforts. The pawns (8) have, for example, a parallelepiped shape. The assembly comprising an arc-shaped part (44), a tongue (42), a staircase part (43), a shoulder (41), a pad of ramps (45), a well and a pad of pawns forms a flange (4). The length of the check flange (4) is less, at rest, than the distance between the bottom (3) of the cabinet (1) and the rounded W-shaped part (6) associated

to said flange (4).

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  The position of the flanges (4) at rest corresponds to the position of the flanges (4) where the axis each well (7) is substantially coincident with the axis of

  the central part (61) of the rounded W-shaped part (6) associated.

  The housing (1) also includes at least one detachable cover.

  (11, 12), for example in the form of an ear. In the embodiments of

  Figures 1 and 2, the cylindrical part (2) comprises four first detachable lids (11) and the bottom (3), four second detachable lids (12), so that each first detachable lid (11) is associated with a second detachable cover (12) located near the first detachable cover (11), the flat edges of the first detachable covers (11) being located near the flat edges of the second detachable covers (12). In this embodiment, each first detachable cover (11) is located substantially vis vis another another detachable cover (11). The plane of symmetry of two first detachable lids (11) facing each other is then substantially perpendicular to the plane of symmetry of the other two first lids

detachable (11) facing each other.

  The detachable lids (11, 12) have a thinner thickness than the cylindrical part (2) and the bottom (3) of the casing (1), and are pre-cut, which allows them to be easily detached by a simple pressure of the doipt exerted, while firmly holding the cas ^ 'tier, on the lids

detachable (1 1, 12).

  The housing (1) includes, optionally, two rods (14) formed

  on the cylindrical part (2) and parallel to the axis of the cylindrical part (2).

  The rods (14) are located opposite one another, so that the plane formed by the axis of the rods is substantially perpendicular to the plane formed by the axis of the screws (5) in the mode for carrying out FIGS. 1 and 2. The end of each rod (14), located on the side of the open edge (15) of the housing (1), forms a stop for a cabinet accessory, and is located on the same plan as the

  n the upper part of each rounded W-shaped part (6).

  The housing (1) comprises a plurality of pins (13) on the outer periphery of the cylindrical part (2), near the open edge (15) of the

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  housing (1) for, when the latter is embedded in a hollow partition (100), at the same time preventing the excessive insertion of the housing (1) in the hollow partition (100), and ensuring the maintenance boftier (1) in the partition

  hollow (100) while waiting for the installation of the electrical equipment.

  The installation of a case (1) with flanges (4) on a hollow partition (100) requires a preliminary step of drilling, cage of the partition, for example, by a hole saw. A hollow partition (100) is generally made up of at least one wall, for example made of plaster, arranged parallel to another wall, for example made of plaster, and supported by a metal or wooden frame, in such a way , with a space between the two walls. Another type of hollow partition consists of a wall, for example plaster, comprising an insulator on one of its faces, this wall being glued to a wall on the side of the insulator. The step of drilling, caged by a saw a bell removes a cylindrical piece from the hollow partition (100), over the entire thickness of the wall, the diameter of the cylindrical piece being substantially equal to or slightly greater than the outside diameter of the part

cylindrical (2) of the housing (1).

  The housing (1) with flanges (4) is inserted in place of the cylindrical piece which has been removed from the hollow partition (100) using the hole saw, the open edge (15) of the housing '^ tier (1) being turned towards the installer. The housing (1) is inserted into the hollow partition (100), for example by simultaneously pulling with the fingers each screw (5) partially screwed in the flange (4), towards the interior of the housing ( 1), so that the casing (1) can penetrate into the hollow partition (100). Each flange then undergoes a rotation relative to the bottom (3) of the housing (1) and each screw (5) comes out of the central part (61) of the rounded W-shaped part (6). The flanges (4) can also be pushed into the interior of the housing (1) without the intervention of the installer, by contacting the thickness of the hollow partition (100) on the ramps (45) of the flanges (4 ). The open edge (15) of the casing (1), after insertion of the casing (1) or into the partition, is then located near the outside face of the hollow partition (100). The distance between each shoulder (41) and the open edge (15) of the housing (1) is equal to or slightly greater than the thickness of

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  the hollow partition (100). The thickness of a hollow partition (100) being typically between 10 and 13 mm, the distance between each shoulder (41) and the open edge (15) of the housing (1) is slightly greater than 13 mm to allow free rotation of each flange (4) behind the thickness of the hollow partition. When the housing (1) is sufficiently inserted into the hollow partition, each flange (4) is pushed back with the fingers to its rest position by rotation towards the outside of the housing (1). The shoulders (41) are then substantially parallel to the interior face of the hollow partition (100) in which the housing has been fitted (1), and located near the interior face of this wall. Each screw (5) partially screwed in the pu its (7) is then again inserted into the central part (61) of the rounded W-shaped part (6). The well (7) of each flange (4) is then again substantially in the axis of the

  central part (61) of the associated rounded W-shaped part (6).

  At least one detachable cover (11, 12) is detached before the insertion of the housing (1) into the hollow partition (100). Just before the insertion of the housing (1) in the hollow partition, the housing (1) is brought close to the hole left in the partition after removal of the cylindrical piece, so that the sheath containing the ends of the electric wires present in the partition (100), to which the electrical equipment is to be connected, or inserted into the openings left at the location of the parts

  detachable (11, 12) which have been previously detached.

  The electrical equipment comprises two rigidly fixed parts: the mechanism (55) of the electrical equipment and the facade (20). Only the mechanism (55) is inserted in the housing (1), as shown in FIG. 4. The fa, block (20), represented in particular in FIG. 3, comprises an interface (50) consisting, for example, in two holes if the electrical equipment is an electrical outlet (see Figure 4), or in a button if the electrical equipment is a switch. The facade (20) also includes two openings (21) arranged opposite each other on the facade (20), each opening (21) being constituted by an oblong hole (215) whose axis of symmetry describes an arc of a circle. At least one end of each opening (21) ends in a circular orifice (210). The diameter of each circular orifice (210) is greater than the diameter of the screw head of the screws (5) of the housing (1). The distance between the screws (5) of the housing (1) is the same as the distance between the two openings (21). The surface of the facade (20) s of the electrical apparatus being larger than the section of the cylindrical part (2) of the casing (1), at least a fraction of the rear face of the facade ( 20) is located against the outer face of the wall of the hollow partition (100) in which the housing is inserted (1), when the apparatus

  electric is inserted in the box (1).

  o After insertion of the box (1) in the hollow partition (100), the electrical equipment is brought close to the box (1) so that the ends of the electric wires accessible in the box are connected to the electrical equipment. The next step is to insert the mechanism (55) of the electrical equipment into the housing (1). Each screw (5) of the housing (1), partially screwed, then penetrates into a circular orifice (210) of the facade (20) of the electrical equipment. The electrical equipment is then easily put in place in exer, cant a rotation of the latter around the axis of the housing (1). Each screw (5) is then screwed. The length of each screw (5) is at least equal to the distance between the edge (15) of the housing

  o (1) and the shoulder (41), increased by the length of the associated well (7).

  Thus, when each screw (5) is pressed until the head of the screw (5) reaches the front, block (20) of the electrical equipment, when one continues to screw, the flange (4) undergoes a translational movement along the axis of the screw (5) in the direction of the open edge (15) of the housing (1), thanks to the presence of the

  arc-shaped part (44), which deforms.

  During the screwing of each screw (5), the pad of pins (8) penetrates into the extreme parts (62) of the rounded W-shaped part (6) associated. The screwing is stopped when each shoulder (41) arrives against the internal wall of the hollow partition (100). The hollow partition (100), in which the housing (1) is inserted, is then sandwiched between the flanges (4) on the one hand, and the rear face of the facade (20) of the electrical equipment d 'somewhere else. The electrical equipment is also perfectly

plate against the partition.

  If an electrical intervention is necessary when the electrical equipment is in place in the casing (1), the casing (1) can easily be removed from the hollow partition. The electrical equipment is first of all removed from the housing (1) after a partial loosening of the screws (5) and a rotation of the fagade (20), so that each screw (5) of the housing with a circular orifice (210) from the front, cade (20). The ends of the electrical wires are disconnected from the electrical equipment. Finally, the flanges (4) can be

  o brought back inside the housing (1), for example using the fingers.

  Note that the case (1) is made, for example, of motile plastic. It must be obvious to those skilled in the art that the

  present invention allows embodiments under many

  ts other specific forms, without departing from the scope of the invention as claimed. Therefore, the present embodiments should be considered by way of illustration, but may be

  modified in the field defined by the scope of the appended claims, and

  The invention should not be limited to the details given above.

Claims (13)

  1. Tiered box (1) with flanges (4) comprising a cylindrical part (2) closed by a bottom (3), for fixing an electrical apparatus in a hollow partition (100), characterized in that it comprises at least two articulated flanges (4), each flange (4) being able to undergo a movement of translation eVou a movement of rotation, and each flange (4) being actuated by a screw (5) to fix the cas ^ 'tier (1) in the partition hollow (100), the screwing of said screw (5) simultaneously allowing to fix o the electrical equipment in the cas ^ 'tier (1) and pinch the hollow partition (100) between the fa, cade (20) of l '' electrical equipment and flanges (4),   flanges (4) and the housing (1) forming a one-piece assembly.   2. Bo ^ tier (1) flanges (4) according to claim 1, characterized in that each flange (4) is located in an opening in the cylindrical part (2) and delimited by a cut in "U" ( 9), each flange being connected to the bottom (3) by an arc-shaped piece (44) which is flexible, allowing the rotation of the flange (4) around the arc-shaped piece (44) to allow ['insertion of the housing (1) in a per, cylindrical cage of the hollow partition, or to remove the housing (1) of this o per, cage, the diameter at said per, cage being substantially equal to the diameter   outside of the cylindrical part (2) of the housing (1).   3. Case (1) with flanges (4) according to claim 2, characterized in that each flange (4) comprises a tongue (42) extending the arc-shaped part (44), said tongue (42) being extended by a stepped part (43) at the free end of which is formed a shoulder (41) substantially parallel to the bottom (3) of the housing (1), the tongue assembly (42) + stepped part ( 43) being substantially   parallel to the generator of the cylindrical part (2).   4. Bo ^ 'tier (1) flanges (4) according to claim 3, characterized in that each flange (4) comprises at least one ramp (45) formed perpendicular to the shoulder (41) and [' together tongue (42) + staircase part (43) to form an angle iron, the ramp (45) s facilitating the insertion of the housing (1) in the per, cage of the hollow partition.   5. Case (1) with flanges (4) according to one of claims 3 or 4,   characterized in that a well (7), tapped inside, is formed in the mass of the stepped part (43) and of the tongue (42) of each   o flange (4), and accommodates a screw (5).   6. Boftier (1) with flanges (4) according to claim 5, characterized in that a pad of pins (8) is formed perpendicular to the shoulder (41) of each flange (4), against the face opposite to that formed against the staircase part (43), each pawn of the padre of pawns   s (8) being located on either side of the well (7).   7. Bo ^ 'tier (1) flanges (4) according to claim 6, characterized in that it comprises at least two pieces in the shape of a rounded W (6), the central part (61) of each piece shaped of rounded W (6) comprising two bosses (610) for holding a screw (5) housed in the space available in the central part (61), each of the bosses (610) being located on either side of the opening of the central part (61),   and each rounded W-shaped part being associated with a flange (4).   8. Bo ^ 'tier (1) flanges (4) according to claim 7, characterized in that, the bo ^' tier being at rest, the well (7) of each flange (4) is located in the axis of the central part (61) of the associated rounded W-shaped part (6), and the pins (8) of each check flange (4) are located respectively in the axes of the end parts (62) of the shaped part from W rounded (6) associated.   i 15 2839818 9. Box ^ (1) flanges (4) according to claim 8, characterized in that, the rear of the electrical equipment being inserted in the box ^ tier recessed in ia hollow partition, each screw (5) , inserted in a fixing means (213 of the electrical equipment, is screwed into the well (7) associated with said screw (5), and each flange (4) undergoes a translational movement along the axis of the screw ( 5), entraining the insertion of each pad of pins (8) in the space available in the end parts (62) of the piece in the shape of a rounded W, to ensure the sandwiching of the partition (100) between the shoulders ( 41) flanges (4) and the rear face   o from the front, block (20) of the electrical equipment.   10. Bo '^ tier (1) flanges (4) according to claim 9, characterized in that the fixing means (21) of the electrical equipment wind at least two oblong holes (215) whose axis of symmetry describes an arc of a circle and one end of which ends in a circular portion (210) of diameter greater than the diameter of the screw head (5), the spacing of the oblong holes (215) being substantially equal to the spacing of the screws (5) .;   11. Bo ^ 'tier (1) flanges (4) according to one of claims 1 to 10,   characterized in that the casing (1) has pins (13) located on the outer periphery of the casing (1) near its open edge (15) to prevent it from rotating relative to the hollow partition (100) and ensure its   maintenance pending the installation of electrical equipment.   12. Bo ^ 'tier (1) flanges (4) according to one of claims 1 to 11,   characterized in that the cylindrical part (2) eVou the bottom (3) of the housing (1) comprises one or more detachable lids (11, 12) to allow the connection of the electrical equipment to electrical wires   located in the hollow partition (100).   13. Method for fixing an electrical apparatus in a hollow partition (100) using the housing (1) with flanges (4) according to a r 1 16 2839818   any of claims 1 to 12, characterized in that it comprises   the following stages: - per, cylindrical cage of a hollow partition (100) of diameter substantially equal to the outside diameter of the housing (1), detachment of at least one detachable cover (11, 12), and insertion into the box ^ tier (1), through the opening left by the detachable ltopercule, at the end of a sheath containing electrical wires located in the partition (1 oo), - insertion of the box {tier (1) in the per, cage, the opening of the box being oriented towards the installer, each flange (4) undergoing a movement of rotation towards the inside of the box (1) to allow the passage of the cabinet in the per, cage, - position of the box ^ tier (1) in the partition (100) by rotation of each flange (4) towards the outside of the box 'tier (1), check flange (4) being located behind the partition (100), - connection of the electrical equipment with the end of the electrical wires accessible in the housing (1), - insertion of the electrical equipment into the opening of the housing (1) , the fa, cade of electrical equipment comprising fixing means (21)   - insertion of a screw (5) of the housing (1) in each fixing means (21) of the electrical equipment, and rotation of the front, block (20) of the electrical equipment around the axis of the housing (1), at a determined angle, - tightening of each screw (5) causing a translation of the flange (4) associated along the axis of the screw (5), so that the hollow partition ( 100) or sandwiched between the flanges (4) and the rear face of the front, cade (20) of