FR2839820A1 - By-pass electrical junction box used in buildings, has pivoted clamps with pivoting units for rotation of each clamp - Google Patents

Abstract

There are a first pair of pivoted clamps (4), formed head-to-head on the wall (2) of the box, each pair of clamps situated in the plane having an axis of symmetry of the box, and each clamp subjected to a translation movement and a rotation movement, this translatory movement caused by screwing of a screw (5) in a threaded shaft (7) of the clamp. There is a pivoting unit (44) allowing rotation of each clamp, with guides (6,8) ensuring the guiding, in translation, of the each clamp when the screw is screwed. The by-pass box (1) includes a casing (2) with rounded corners (20), closed by a bottom (3) and an axis of symmetry perpendicular to the bottom, for connecting two electric wires assembled in a hollow closure.

Description

the hollow partition housing.

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  The present invention relates to a derivation box which is fixed in a hollow partition, intended in particular to receive and connect together a plurality of electrical conductors coming from different circuits. In a building, each dwelling is supplied with electrical energy by an electrical supply arriving at a so-called distribution table, allocated to said dwelling. This distribution table then constitutes the starting point for all of the electrical conductors supplying the different rooms of the accommodation. The distribution board also includes electrical circuit protection devices, circuit breaker type

or circuit breakers.

  Depending on the complexity of the circuit or the number of parts to be supplied with electrical energy, one or more junction boxes can be used, each junction box constitutes a local distribution point. The branch box is generally of a larger volume than the boxes for electrical equipment, such as switches and socket outlets, so as to house the electrical conductors and connectors therein. o It is known from many diversion boxes for hollow partitions. In general, the junction box is fixed in the partition with the aid of first screws, generally four in number, and the cover is fixed to the

  cas ^ 'tier using second screws, also generally four in number.

  The installation of a junction box of this type therefore requires eight operations

s of screwing.

  The object of the present invention is therefore to overcome certain drawbacks of the prior art by proposing a junction box for hollow partitions, which is simple and quick to install, and which is inexpensive to manufacture.

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  This object is achieved by a junction box comprising a square part with rounded corners, closed by a bottom and an axis of symmetry perpendicular to the bottom, to connect at least two electrical conductors together in a hollow partition, characterized in that 'it comprises at least a first pad of articulated flanges, formed vis-vis on the wall of the housing, each pad of flanges being located in a plane comprising the axis of symmetry of the housing and each flange being able to undergo a translational movement along the axis of symmetry of the housing eVou a rotational movement towards the inside or the outside of the housing, said translational movement being carried out by screwing a screw in a tap hole of the flange, which is substantially parallel to the axis of symmetry of said cylindrical part, and in that it comprises articulation means, allowing a rotational movement of each flange when the screw is only partially screwed into the tap well, so q eu guiding means, ensuring the guiding in translation of each flange when the screw, mounted in a manner, removable con in a part formed in the wall of the housing,

above the flange, is screwed.

  According to another particular feature, the casing comprises a second pad of articulated flanges formed in a plane perpendicular to the plane

  including the first padre of flanges.

  According to another particular feature, each flange, delimited by a U-shaped cutout extending to the bottom of the housing, is formed

in a rounded corner of the housing.

  According to another particular feature, the screwing of the flange screws, each inserted into a means for fixing a cover, simultaneously makes it possible to fix said cover on the housing and to sandwich the wall of the hollow partition between the face back of the cover and the upper surface of the flanges. According to another particular feature, the wind guiding means constituted o by the part formed above the flange, into which the screw can be snapped, and by a pad of pawns, formed on the upper surface of the flange, of each side of the tap hole, which penetrate into shapes

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  formed in the room to prevent rotation of the

flange when screwing the screw.

  According to another particularity, the wind articulation means constituted by a flexible arc-shaped piece connecting the bottom of the casing and the flange, with a radius of curvature determined to allow the elastic rotation and translation of the flange, the rotational movement of each flange being

  realized around an axis perpendicular to the axis of symmetry of the housing.

  According to another particular feature, each face of the housing comprises at least one detachable cover to allow the insertion of conductors

  o connect together in the box.

  According to another particular feature, the casing has pins on its outer periphery, near its open edge, to ensure its maintenance

  while waiting for the connection of the conductors and the fitting of the cover.

  Another object of the invention is to propose a method for installing an i5 branch box according to the invention in a hollow partition, characterized in that it consists in: - making a square opening with rounded corners, of substantially equal dimensions or slightly higher than those of the housing section, o - detach at least two detachable lids, and insert into the housing, through the openings left by the detached lids, the ends of the conductors to be connected, - insert the housing in the opening, each flange undergoing a rotation movement towards the inside of the housing to allow passage of the housing through the per, cage, - subject each flange to a rotation movement towards outside the casing to position each flange behind the partition, - connect the electrical conductors using connectors, - if necessary unscrew completely each screw of the flange well if it was partially screwed in, - insert each screw u bo ^ ^ tier in a means of fixing the cover, and engage each screw in the well of a flange,

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  - screw each screw to cause a translation of the flange along the axis of the housing, so that the hollow partition is sandwiched between the

  upper surface of the flanges and the rear face of the cover.

  Other features and advantages of the present invention

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

  reference to the accompanying drawings, in which: - Figure 1 shows a perspective view of the housing

  bypass for hollow partitions according to the invention.

  The junction box (1) according to the invention, represented in FIG. 1, comprises a square part (2) with rounded corners (20), closed in one side by a bottom (3), and at the at least two flanges (4), located opposite one another, each in a rounded corner (20). Preferably, the casing (1) comprises two pads of flanges (4), each of the flanges being formed in a rounded corner (20) of the casing, so that the planes comprising each padre of flanges are orthogonal between them and have for intersection the axis of symmetry of the bo ^ 'tier. Each flange (4) is delimited by a U-shaped cutout (9) extending as far as the bottom (3) of the housing. Each flange (4) is only held in the housing (1) by an arcuate piece (44), located between the edge of the flange (4) located near the bottom o (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 wall of the corner of the housing (1), each of the plates (10) being located on either side of the cutout (9) in the shape of a U. A piece in the shape of a W s rounded (6) is formed against each pad of plates (10), above each cut (9). 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) situated near the opening of the central part (61), making it possible to maintain a screw (5) in the available space in the central part (61). Each flange (4) is associated with a rounded W-shaped part (6). Each rounded W-shaped piece (6) s 2839820 constitutes an elastic piece allowing the latching of a screw (5) in its central part, the elasticity being given by the end parts of the piece

in the shape of a rounded W (6).

  Each flange (4) comprises, in the extension of the arc-shaped part (44), a rectangular tongue (42) extended by a stepped part (43), the assembly formed by the tongue (42) and the stepped part (43) forming, at rest, with the bottom (3) of the housing an angle of substantially 90. In extension of each staircase part (43) is

  forms a shoulder (41), substantially parallel to the bottom (3) of the housing (1).

  o The shoulder (41) is partly located outside the square part (2) with rounded edges (20) when the flange (4) is at rest. Two ramps (45) parallel wind formed against each shoulder (41) and against each tongue assembly (42) + staircase part (43) to form an angle iron, each ramp (45) of the pad of ramps thus formed being located, s 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) + stepped 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. Each well (7) is tapped by the screw (5) o 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 maintain

  each flange (4) substantially parallel to the axis of symmetry of the housing (1).

  Each shoulder (41) comprises a pad of pawns (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) makes it possible to guide the translation of the flange and to limit the rotational movements of the flange (4) along the axis of the screw (5) during the screwing efforts. The pawns (8) have, for example, a parallelepiped shape. The set including a

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  arch-shaped piece (44), a tongue (42), a stepped part (43), a shoulder (41), a pad of ramps (45), a well and a pad of pawns forms a flange (4 ). The length of each check flange (4) is less, at rest, than the distance between the bottom (3) of the cabinet (1) and the rounded W-shaped piece (6) associated with said flange (4). The housing and the flanges form a

monobloc assembly.

  The position of the flanges (4) at rest corresponds to the position of the flanges (4) for which the axis of each well (7) is substantially coincident with the axis of the central part (61) of the W-shaped part. rounded (6)

o associated.

  The housing (1) also comprises at least one detachable cover (11) per face, for example of circular shape. Preferably, each face comprises detachable trots (11). Each detachable cover (11) has a thinner thickness than the square part (2) with rounded corners (20), s and is precut, which allows it to be detached easily by a simple pressure of the finger exerted, while firmly holding the bo ^ 'tier. In an alternative embodiment, the lids (11) are detached using a

sharp tool.

  The casing (1) comprises a plurality of pins (13) on the periphery or outside of the casing, near the edge (15) so that, when the latter is embedded in a hollow partition, both prevent the pushing the housing too far (1) into the hollow partition, and ensuring that the

  cas ^ 'tier (1) in the hollow partition while waiting for the fitting of the cover.

  The installation of a junction box (1) of bypass according to the invention on a hollow partition requires a preliminary step consists in making a square-shaped opening with rounded corners in the partition, of dimensions adjusted to those of the box. 'tier (1). A hollow partition is generally made up of at least one wall, for example of plaster, arranged parallel to another wall, for example of plaster, and supported by a metal or wooden frame, in such a way that space is 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.

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  on the insulation side. In one embodiment, the opening is made using a cutting tool, such as a saw blade, following a line previously marked in pencil on the partition following the outside outline of the casing. In another embodiment, the opening is made by drilling four holes using a hole saw, with a curvature equal to that of the rounded corners, in the places hosting said corners, then eliminating the excess of partition near the sides of the housing using

  of a cutting tool type saw blade.

  The junction box (1) according to the invention is inserted into the opening made in the hollow partition, the open edge (15) of the box (1) being turned towards the installer. The installer makes each flange undergo a rotation movement towards the interior of the housing (1), by pulling it for example with the finger, so that the flanges no longer protrude towards the exterior of the housing ^ tier (1) so that it can be inserted into the opening made in the partition. To be able to carry out this rotational movement, each screw (5) partially screwed into the well (7) of the flange (4) is released from the central part (61) of the piece in the shape of a rounded W (6). The flanges (4) can also sink towards the inside of the housing (1) without the intervention of the installer, by pressing the thickness of the hollow partition on the ramps (45) of the flanges (4) . The open edge (15) of the casing (1), after insertion of the casing (1) into the partition, is then close to the outer face of the hollow partition. 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 the hollow partition. The thickness of a hollow partition 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 in the hollow partition, each flange (4) is pushed back with the fingers towards 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 in which the housing (1) has been fitted, and

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  located near the interior face of this wall. Each screw (5) partially screwed into the well (7) is then snapped back 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 piece in the shape of a rounded W (6) associated. At least two detachable lids (11) are detached from the housing, preferably before the insertion of the housing (1) into the hollow partition. Just before the insertion of the box (1) into the hollow partition, the electrical conductors to be connected are brought near the opening made in where the partition. The electrical conductors are inserted into the junction box according to the invention through the holes left by the detachment of the lids (11). After insertion of the housing in the partition, the conductors are connected by means of one or more connectors, even before the housing is fixed, the latter being held in the opening of the

  partition in particular thanks to the pins (13) forms on its periphery.

  After connection of the conductors, a cover (not shown) is placed on the housing. The cover is a square plate with rounded corners. The perimeter of the cover is greater than that of the edge (15) of the housing, so as to be able to sandwich the wall of the hollow partition between the flanges o (4) and the cover. The cover is provided with holes, of number equal to the number of flanges of the housing (1), which each have a diameter less than the

head of screws (5) of housing (1).

  After insertion of the housing (1) in the hollow partition, and connection of the conductors, each screw (5) of the housing (1), which was partially screwed, is completely unscrewed. The installer inserts one of these screws (5) in each per, cage of the cover, then ['engaged in the well (7) of the flange (4) located in correspondence of the per, cage located on the cover. 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 (1) and the shoulder (41), o increased by the length of the associated well (7). Thus, as soon as the cover is sandwiched between the partition and the parties of the screws, when lton continues to screw each screw, the flange (4) undergoes a movement of

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  translation 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, flange being linearly guided by the penetration of the pins (8)

  in the end parts (62) of the W-shaped part (6).

  s The screwing is stopped when each flange shoulder (41) (4) arrives against the internal wall of the hollow partition. The hollow partition, into which the housing is inserted (1), is then sandwiched between the flanges (4) on the one hand, and the rear face of the cover on the other hand. The cover is

  also perfectly plate against the partition.

  o If an electrical intervention is necessary, the junction box (1) can easily be removed from the hollow partition. The cover is first removed from the housing (1) after the screws (5) have been completely unscrewed. The ends of the electrical conductors can be disconnected. If it is necessary to remove the housing from the partition, for example to add conductors to be connected, the installer can make the flanges (4) undergo a translational movement towards the bottom of the housing, for example by pressing the pins with a point to extract them from the extreme parts of the W-shaped part then subject the flanges (4) to a rotation movement towards the inside of the housing (1), for example a ['using fingers, and o possibly by partially screwing the screws (5) in the wells (7) of the flanges (4) to facilitate the grip of the flanges, finally pull the housing towards it. Note that the housing (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

  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.

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Claims (9)

  1. Junction box (1) comprising a square part (2) with rounded corners (20), closed by a bottom (3) and an axis of symmetry perpendicular to the bottom, for connecting at least two electrical conductors together in s a hollow partition, characterized in that it comprises at least a first pad of articulated flanges (4), formed opposite on the wall (2) of the housing, each pad of flanges being located in a plane comprising the 'axis of symmetry of the housing ^ and each flange t4) being able to undergo a movement of translation along the axis of symmetry of the housing (1) and / or a movement of o rotation towards the interior or the exterior of the housing, said translational movement being carried out by screwing a screw (5) into a well (7) tap of the flange (4), that i is substantially parallel to the axis of symmetry of the lad ite pa cylindrical rtie (2), and in that it comprises articulation means (44), allowing a rotational movement of each flange (4) when the screw (5) s is only gone actually screwed into the well (7) tap, as well as guide means (6, 8), ensuring the guiding in translation of each flange (4) when the screw (5), removably mounted in a piece (6)   formed in the wall of the casing, above the flange (4), is screwed.   2. Bo ^ ^ tier (1) bypass according to claim 1, characterized in that it comprises a second padre of articulated flanges (4) formed in a   plane perpendicular to the plane including the first padre of flanges (4).   3. Bo ^ 'tier (1) bypass according to claim 1 or 2, characterized in that each flange (4), delimited by a U-shaped cutout (9) extending to the bottom of the bo ^ tier ( 1), is formed in a corner s rounded (20) of the housing.   4. Bo ^ 'tier (1) derivation according to one of claims 1 to 3,   characterized in that the screwing of the screws (5) of the flanges (4), each inserted into a means for fixing a cover, simultaneously makes it possible to fix the said cover on the housing and to sandwich the wall of the partition 11 2839820   hollow between the rear face of the cover and the upper surface (41) of the flanges (4).   5. j ^ 'tier (1) derivation according to one of claims 1 to 4,   characterized in that the guide means (6, 8) are formed by the part (6) formed above the flange (4), in which the screw (5) can be clicked, and by a pad of pins (8 ), formed on the upper surface (41) of the flange (4), on each side of the taphole, which penetrate into complementary forms formed in the part (6) to prevent rotation of the   flange when screwing the screw (5).   o 6. shunt box (1) according to one of claims 1 to 5,   characterized in that the articulation means (44) are constituted by a flexible arc-shaped piece (44) connecting the bottom (3) of the housing and the flange (4), with a radius of curvature determined to allow the elastic rotation and translation of the flange, the rotational movement of each flange (4) being   performed around an axis perpendicular to the axis of symmetry of the housing (1).   7. case (1) of derivation according to one of claims 1 to 6,   characterized in that each face of the housing (1) comprises at least one detachable cover (11) to allow the insertion of conductors connect together in the case.   8. Boftier (1) derivation according to one of claims 4 to 7,   characterized in that it has pins (13) on its outer periphery, near its open edge (15), to ensure its maintenance while waiting for the   connecting the conductors and fitting the cover.   9. Method for fitting a shunt box according to one of the   Claims 1 to 8 in a hollow partition, characterized in that it consists   a: - make a square opening with rounded corners, of dimensions substantially equal to or slightly larger than those of the bolt section (1), 12 2839820   - detach at least two detachable lids (11), and insert into the housing (1), through the openings left by the detached lids, the ends of the conductors to be connected, - insert the housing (1) into the opening, each flange (4) undergoing a movement of rotation towards the interior of the housing (1) to allow the passage of the housing in the per, cage, - subject each flange (4 ) a rotational movement towards the outside of the housing (1) to position each flange behind the partition, - connect the electrical conductors using connectors, o - if necessary completely unscrew each screw (5) partially screwed into the well ( 7) with a flange (4), - insert each screw (5) of the housing (1) in a means of fixing the cover, and engage each screw (5) in the well (7) of a flange (4), - tighten each screw (5) to bring about a translation of the flange (4) s along the axis of the housing, so that the hollow partition is sandwiched between