FR2973175A1 - Electrical connection case for public lighting and road signs, has skirts arranged with mounting system for mounting skirt on housing, and tightening system for tightening skirt around cables extending into housing through openings - Google Patents

Abstract

The case (1) has a housing (4) and a set of openings (13) for passing cables (30) arranged in the housing. Flexible skirts (40) are provided near one of the set of openings or each opening. Each skirt is arranged with a mounting system (60) for mounting the skirt on the housing, and a tightening system (50) for tightening the skirt around the cables extending into the housing through the openings. The skirt is deformable between a set of different configurations.

Description

ELECTRICAL CONNECTION HOUSING FOR PUBLIC LIGHTING OR ROAD SIGNALING

The present invention relates to an electrical connection box for street lighting or road signs. The field of the invention is that of the sealing of the connection boxes provided with electrical or network cables. In known manner, such a housing comprises an enclosure in which are housed one or more electrical protection elements, for example a fuse, and a cable connection terminal block penetrating the envelope through an opening provided for this purpose. Depending on the application, the cables may have different configurations, namely a variable number and / or variable sections. In order to protect the internal elements of the housing, a sufficient seal must be made at the opening of the envelope through which the cables enter the housing, while allowing easy handling for a user, such as an installer or a maintenance operator. To achieve such a seal, existing devices are generally placed at the opening. Some devices are suitable for a limited number of configurations: a limited number of cables, and specific cable sections. This is the case for example rigid devices positioned on either side of the cables, as well as plastic blocks provided with openings, which are easy to handle but not very versatile. Flexible devices, such as pre-cut foam blocks, accept variable cable sections but are less resistant to aging and do not allow front insertion of the cables. The user must then pass each cable in a hole, which greatly complicates handling.

The object of the present invention is to provide an electrical connection box incorporating a reliable sealing device, versatile, easy to handle, resistant to aging and inexpensive. For this purpose, the subject of the invention is an electrical connection box for street lighting or road signs, comprising a casing shell, at least one cable opening provided in the casing, and a connecting device. disposed within the casing and adapted to receive the cables through the or openings. This housing is characterized in that it comprises at least one flexible skirt disposed near one or each opening, the or each skirt being provided with a mounting system of this skirt on the envelope and a clamping system of this skirt around cables entering the envelope through the opening.

Thus, the invention makes it possible to improve the tightness achieved around cables penetrating the envelope through the opening. The mounting system makes it possible to position the skirt on the envelope in a simple and effective manner. The clamping system makes it possible to tighten the skirt around the cables in order to seal at the opening, whatever the configuration of the cables, in a simple and effective manner. The mounting and clamping systems are advantageously integrated into the skirt. When installing the housing or during a maintenance operation, the skirt does not interfere with the handling of the cables by the user. According to other advantageous features of the invention, taken separately or in combination: the skirt is deformable between several configurations, including at least one non-use configuration in which the clamping system is released, and a configuration of use wherein the clamping system is tight and the skirt seals around cables penetrating the envelope through the opening. - The skirt in use configuration has a profile surrounding a central axis, in particular centered on this central axis, with a first side surrounding the envelope, delimiting a first section and comprising the mounting system, and a second side delimiting a second section and comprising the clamping system, the area of the first section being greater than or equal to the area of the second section. - The mounting system is at least partially removable and / or deformable and configured so that the attachment of the skirt to the envelope is reversible. - The mounting system includes a clamp, a cord or a strap, integrated into the skirt and able to be tightened around the envelope. - The mounting system of the skirt on the casing is constituted by a material of the skirt having elastic properties or by an elastic element integrated in this skirt. - The clamping system comprises a clamp, a cord or strap, integrated into the skirt and able to be clamped around cables penetrating the envelope through the opening. - The clamping system is constituted by a material of the skirt having elastic properties or by an elastic element integrated into this skirt - The skirt is made of synthetic or natural fabric, in particular coated polyester, or elastomer, in particular silicone or EPDM. - The skirt is in the form of a rectangular strip forming, in the configuration of use, a covering between two opposite edges. In configuration of use of the skirt, the edges are maintained by a reversible joining system between these opposite edges. - The skirt is in the form of a tubular sleeve. The invention will be better understood on reading the description which follows, given solely by way of nonlimiting example and with reference to the drawings, in which: FIG. 1 is a perspective view of a compliant electrical connection box; the invention, equipped with an envelope and a sealing skirt, shown in a non-use configuration; FIG. 2 is a view similar to FIG. 1 of the connection box shown in a configuration of use; - Figure 3 is an exploded perspective view of the housing of Figures 1 and 2, the skirt not being shown; - Figure 4 is a view similar to Figure 2, the skirt not being shown; - Figure 5 is a rear view of the housing according to the arrow V in Figure 4; - Figure 6 is a bottom view of the housing according to the arrow VI in Figure 4, showing cables penetrating through an opening in the casing; - Figure 7 is a view similar to Figure 6, showing a larger number of cables entering the opening; - Figure 8 is a front view of the skirt of Figure 1 in unfolded configuration; - Figure 9 is a perspective view of the skirt of Figure 8 in folded configuration; - Figure 10 is a perspective view similar to Figure 1, showing the attachment of the skirt, shown in the non-use configuration, on the envelope partially shown; - Figure 11 is a view similar to Figure 8 of a second embodiment of a sealing skirt fitted to a connection box according to the invention; - Figure 12 is a view similar to Figures 8 and 11 of a third embodiment of a sealing skirt fitted to a connection box according to the invention; - Figure 13 is a perspective view of the skirt of Figure 12 in folded configuration; - Figure 14 is a larger scale section along line XIV-XIV in Figure 12, when the skirt is mounted on the casing; Figure 15 is a view similar to Figure 9 of a fourth embodiment of a sealing skirt fitted to a connection box according to the invention; and Figure 16 is a view similar to Figures 9 and 15 of a fifth embodiment of a sealing skirt fitted to a connection box according to the invention. In Figures 1 to 10 is shown a connection box 1 according to the invention. The housing 1 comprises, inter alia, an envelope 4 and a sealing skirt 40. FIG. 1 shows the housing 1 in a non-use configuration, for example during assembly or maintenance, while FIG. 2 shows the housing 1 in a configuration of use, while the seal is provided by the skirt 40 mounted on the casing 4 at an opening 13. The casing 4 comprises a base 6 and a cover 8, defining together 9. The base 6 is intended to be fixed on or in a public lighting installation or road signs, not shown, for example a post standing upright ground. For this purpose, a rear face 7 of the base 6 is provided with an anchoring system, also not shown. In a conventional but not mandatory manner, the casing 4 of the casing 1 is elongate along a longitudinal axis X1 between two ends 11 and 12. To facilitate the identification of the different parts of the casing 1 in the space, an upper side corresponding to the end 11 and a lower side corresponding to the end 12.

The orientation of Figures 1 to 5 corresponds to a conventional vertical use of the housing 1, it being understood that alternatively, this housing 1 can be arranged in a horizontal or inclined position. As shown in FIGS. 1 and 3, an electrical protection element 23 and a connection device 26 are housed in the interior space 9 of the envelope 4. The base 6 has internal walls 15 between which fixing members are arranged. 14, provided to cooperate with fasteners 24 belonging to the element 23, which is for example a fuse holder. The walls 15 cooperate with the cap 8. The device 26 is configured to receive electrical wires 39 coming from cables 30. The element 23 and the device 26 are also connected by wires, not shown in FIG. 3 for the sake of clarity. drawing. As shown in Figures 3 and 4, the cover 8 comprises two distinct parts, namely a shell 16 of the lower side 12 and a cover 18 of the upper side 11. A clasp 19 is disposed between the shell 16 and the lid 18. The shell 16 is mounted on the base 6 cooperating with the walls 15 and comprises three walls 16a, 16b and 16c. Preferably, the base 6, the shell 16 and the lid 18 of the cover 8 are made of injected plastic, in particular polycarbonate (PC), polypropylene (PP) or acrylonitrile butadiene styrene (ABS). The cover 8 may be partially or entirely transparent, in order to facilitate the viewing of the elements 23 and 26 housed in the interior space 9. As a variant not shown, the envelope 4 of the housing 1 may have any configuration adapted to the present application . For example, the cover 8 can be monobloc. In another example, the outer shapes and dimensions of the envelope 4 may be different from those shown in Figures 1 to 7 and 10 and, in this case, the dimensions of the skirt 40 fitted to the housing 1 are adapted to this envelope 4.

In practice, the cables 30 penetrate into the casing 4 through a passage opening 13 delimited between the base 6 and the walls 16a, 16b and 16c of the lower side 12. The inside of the casing must be protected from any splashing water . A seal must therefore be made at the opening 13, However, a maintenance operator must be able to easily access the inside 9 of the casing 4, for example to change the element 23 or to handle the son 39 connected to the device 26. Moreover, as shown in Figures 6 and 7, the configuration of the cables 30 penetrating into the casing 4 of the housing 1 can vary significantly, especially depending on the available equipment. By way of example, for a public lighting installation, the housing 1 can receive between one and three network cables and up to two cables connected to the lamps. Considering the same housing 1, three cables 31, 32 and 33 enter the opening 13 in Figure 6, while five cables 31, 32, 33, 34 and 35 enter the opening 13 in Figure 7. Otherwise said, the sealing means used for the housing 1 must adapt to the number and dimensions of the cables 30, which are likely to vary.

Under these conditions, the sealing means associated with the casing 4 of the casing 1 must have effective protection, while being simple to handle and versatile to adapt to different cable configurations. For this purpose, the casing 1 is equipped with a sealing skirt 40. The skirt 40 is fixed to the casing 4 in a fastening zone 20 having holes 21 and 22 formed on the base 6. The skirt 40 is made of impervious flexible material, in particular synthetic or natural fabric, or elastomer. For example, the fabric may be polyester coated, while the elastomer may be a silicone or an EPDM. Thus, the skirt adapts easily to different cable configurations, while being resistant to aging and easy to handle.

As shown in FIGS. 1, 2 and 8 to 10, the skirt 40 comprises a rectangular fabric band 41, with two rectangular faces 41A and 41B, two long sides 42 and 43 and two short sides 44 and 45. Two housings 46 and 47 are delimited in the skirt 40 along the side 42, with a passage 48 open between these housings 46 and 47 on the side of the face 41A. A housing 49 is delimited in the skirt 40 along the side 43. When the skirt 40 is positioned on the envelope 4, the face 41A is turned towards the face 7 and is in contact with the envelope 4, the face 41 B is turned away from the face 7, the side 42 is oriented towards the upper side 11 of the housing 1, while the side 43 is oriented opposite the envelope 4. Regarding the housing 47 and 49, the openings formed on the face 41 B near the side 45 are slightly offset from the edge of the band 41. The skirt 40 comprises a mounting system 60 provided for reversibly securing the skirt 40 to the casing 4. More specifically, a Plastic collar 61 is inserted into the housings 46 and 47 of the skirt 40. The collar 61 has two ends 64 and 65 located outside the housings 46 and 47, respectively on the sides 44 and 45. The end 65 is shaped like a buckle with an orif passage, in which the end 64 can slide irreversibly due to the presence of raised notches, not shown, along the collar 61. The collar 61 also has a central portion 62 which passes through the passage 48 on the side of the face 41A, outside the housing 46 and 47. When the skirt 40 is mounted on the casing 4, the end 64 of the collar 61 passes successively through the housing 47, the holes 21 and 22 provided on base 6 then the housing 46 before emerging from the skirt 40 of the side 44. The portion 62 is then located between the holes 21 and 22, inside 9 of the casing 4, while the skirt 40 extends to the 4. The collar 61 of the system 60 thus makes it possible to secure the skirt 40 to the envelope 4. The collar 61 also makes it possible to tighten the skirt 40 around the envelope 4, so as to improve the seal between the envelope 4 and the side 42. When the end 64 is in troduced then pulled through the loop 65, the side 42 of the skirt 40 is tightened around the casing 4. The skirt 40 also comprises a clamping system 50 disposed near the side 43 and provided to tighten the skirt 40 around the cables 30. More specifically, the clamping system 50 comprises a clamping collar 51 made of plastic, which is arranged in the housing 49. The collar 51 is similar to the collar 61 and has two ends 54 and 55 located outside the housing 48, respectively on the sides 44 and 45. The end 55 is shaped like a clamping loop provided with a through hole, in which the end 54 can slide irreversibly. This system 50 is thus able to seal between the inside 9 and the outside of the casing 4, by tightening the skirt 40 on the cables 30 at the side 43.

As shown in Figure 9, when the collars 51 and 61 are tight, the skirt 40 is in folded configuration. The side 44 of the skirt 40 covers the side 45 to prevent any entry of water into the casing 4. The skirt 40 then has a tubular shape surrounding a central axis X40 which is superimposed with the axis X1. Due to the outer shapes of the casing 4, the tubular shape of the skirt 40 is even centered on this central axis X40. In this case, the side 42 delimits a section S42 whose area is substantially equal to the area of a section S43 delimited by the side 43, these sections S42 and S43 being considered in respective planes perpendicular to the axis X40 . In practice, as shown in Figure 1, the skirt 40 is first attached to the casing 4 through the collar 51 inserted into the holes 21 and 22. After positioning the various cables 30 and closed the casing 4, the The operator manipulates and deforms the skirt 40 to enclose the cables 30 and the envelope 4, thus passing from the unfolded configuration of FIGS. 1, 8 and 10 to the folded configuration of FIG. 9. The side 42 of the skirt 40 encloses the base 6 and the cover 8 forming the casing 4. The longitudinal axis X1 of the housing 1 is then located in the tubular space defined by the band 41, while the opening 13 is located between the sides 42 and 43 along this axis X1. The side 43 of the skirt 40 surrounds the cables 30 on the side 12 of the housing 1, but without tightening the cables 30 to seal at the opening 13. Then, the operator actuates the mounting system 60 on the envelope, then the clamping system 50, so that the side 43 is deformed by tightening on the cables 30, thereby achieving the desired sealing by protecting the opening 13. As shown in Figure 2, the housing 1 and the skirt 40 are then in use configuration, where the seal between the inside 9 and the outside of the casing 4 is ensured. Edges 44 and 45 overlap. The area of section S43 is less than the area of section S42. The clearance present in the section S43 between the side 43 of the skirt 40 and the cables 30 is reduced, or even zero, so that the housing 1 is effectively protected from splashing water and solid body intrusions. Alternatively not shown, when the cables 30 are more numerous and / or have a larger section than in Figure 2, the area of the section S43 may be equal to the area of the section S42. In practice, the sealing skirt 40 is deformable between several configurations. Firstly, during assembly of the casing 1, the skirt 40 is in unfolded configuration where the mounting system 60 and the clamping system 50 are released and the sealing at the level of the cables entering the casing 4 by opening 13 is not assured.

Then, the skirt 40 can be brought into folded configuration, where the skirt 40 surrounds the envelope 4 with its edges 44 and 45 which form an overlap: the skirt 40 is held by the mounting system 60 on the envelope 4, while that the system 50 is not tight. Finally, the skirt 40 can be brought into use configuration, where the system 50 is tightened and the sealing around the cables 30 penetrating into the envelope 4 through the opening 13 is ensured.

Advantageously with respect to the existing devices, this sealing can be achieved whatever the number and the section of the cables 30, so that the operator can use the same housing 1 provided with the same skirt 40 for a significant number of applications. In variant not shown, the mounting system 60 may have a different configuration. For example, the clamp 61 of the system 60 may be replaced by an annular elastic band, by a strap provided with a clamping loop or by a cord provided with a clamping member, adapted to tighten the skirt 40 around In another example, the system 60 may comprise a pressure button, a clipping mechanism or self-gripping strips arranged between the skirt 40 and the envelope 4. According to another example, the system 60 of fixation on the envelope may comprise a layer of glue or staples joining the skirt 40 to the envelope 4 in a non-removable manner. According to another variant not shown, the clamping system 50 may have a different configuration. For example, the collar 51 may be replaced by an annular elastic band, by a cord provided with a clamping member or by a strap provided with a clamping loop. According to another variant not shown, when several openings 13 for the passage of cables 30 are formed in the casing 4, for example an opening provided at each of its ends 11 and 12, then the casing 1 can be provided with several skirts 40. In Figure 11 is shown partially a second embodiment of a housing 1 according to the invention. More precisely, FIG. 11 shows a skirt 40 'in the non-use configuration, adapted to equip the casing 4 of FIGS. 1 to 10, not shown in this FIG. 11.

Some constituent elements of the skirt 40 'are identical to the constituent elements of the skirt 40 of the first embodiment described above, and bear the same reference numeral. This is the cylindrical strip 41 of axis X40 provided with faces 41A and 41B, the upper side 42, the lower side 43, sides 44 and 45, housings 46, 47 and 48, clamping systems 50 and 60 constituted by collars 51 and 61, and the end 64 and the loop 65 of the collar 61.

Unlike the first embodiment, the band 41 of the skirt 40 'comprises a junction system 70. This system 70 consists of two self-gripping strips 74 and 75 provided with loops and hooks, respectively arranged on the side 44 on the face 41A and the side 45 on the face 41 B of the band 41. Tapes of the type 74 and 75 are marketed under the trademark "VELCRO". In practice, when the skirt 40 is attached to the envelope 4 and the strip 41 is developed with a rectangular shape, the strip 74 is turned towards the face 7, while the strip 75 is turned away from the face 7. Then, when the end 64 passes through the loop 65 of the collar 61 and the band 41 is wrapped around the envelope 4, then the strips 74 and 75 come into contact with each other and become solidary. . The skirt 40 is then in folded configuration, in which the band 41 has a tubular shape. The system 70 makes it possible to reinforce the seal between the skirt 40 and the casing 4, at the junction of the edges 44 and 45. In a variant that is not shown, the joining system 70 may have a different configuration. For example, the system 70 may comprise a slide fastener arranged between the sides 44 and 45 of the band 41. In FIGS. 12 to 14 is partially shown a third embodiment of a casing 1 according to the invention. More specifically, Figures 12 to 14 show a skirt 140 adapted to equip the casing 4 of Figures 1 to 10, not shown. Some constituent elements of the skirt 140 are similar to the constituent elements of the skirt 40 of the first embodiment described above, and have the same numerical reference increased by 100. This is the cylindrical strip 141 of axis X140 provided with faces 141A and 141B, sides 142, 143, 144 and 145, housing 149, clamping systems 150, mounting 160 and junction 170, strips 174 and 175, and sections S142 and S143. The skirt 140 comprises a mounting system 160 disposed in a central zone 148 near the side 142 and provided to reversibly connect the skirt 140 to the envelope 4. More precisely, as shown in FIG. 14, the system 160 comprises a support 161 connected to a harpoon tip 162 by a rod 163. The tip 162 is in the form of two lateral fins or a cone of revolution. The elements 161, 162 and 163 are made of a deformable material, for example elastomer, and are preferably monobloc. Alternatively, only the tip 162 is deformable.

The skirt 140 also comprises a clamping system 150 disposed near the side 143 and provided to reversibly tighten the skirt 140 around the cables 30.

More specifically, the clamping system 150 comprises a cord 153 disposed in the housing 147. This cord 153 has a first end 154 and a second end 155, which are formed as a node out of the housing 147, respectively on the side 144 and the side 145 Thus, the ends 154 and 155 can not slide in the housing 147. The cord 153 is thus integral with the skirt 140, while sliding in the housing 147. A clamping member 151 of the "stop-cord" type, known in itself, is arranged on the cord 153 at its end 154. The member 151 is usually clamped on the cord 153, but can be released by pressure and thus slide on the cord 153. When the member 151 is actuated and slides on the cord 153 away from the end 154, then the side 143 of the band 141 is deformed and contracted. This clamping system 150 is thus able to provide a seal between the inside 9 and the outside of the casing 4, by tightening the skirt 140 on the cables 30 at the side 143. In practice, as shown in FIG. 14, the skirt 40 is fixed to the casing 4 in the zone 20 during assembly of the casing 1. For this purpose, an orifice 23 is formed in this zone 20, on the rear face 7 of the base 6. The tip 162 is introduced into the orifice 23 by elastically deforming, thus making a reversible clipping connection between the skirt 140 and the casing 4. The tip 162 is locked inside 9 of the casing 4, the rod 163 is housed in the orifice 23, while the support 161 is pressed against the face 7. Once mounted on the casing 4, the skirt 140 can be disassembled by the operator with the aid of a simple tension exerted in the zone 148. In this case, the tip 162 is deformed and extracted from the orifice 23. The tension exerted on the zone 148 and the tip 162 must be greater than a threshold value so that the tip 162 is deformed, which prevents accidental disassembly of the skirt 140. Thus, the skirt 140 may be cleaned or replaced, especially after a period of time. prolonged use. Also, the skirt 140 may be spaced from the opening 13 and / or the cover 8 to facilitate access to the inside 9 of the envelope 4, but the presence of the system 170 makes it possible to avoid complete disassembly of the skirt 140 separating the sides 144 and 145.

Alternatively, the tip 162 can be configured so that its extraction from the orifice 21 is possible only with the aid of a tool handled by the operator, and not manually. In this case, the dimensions and / or the material of the tip 162 are adapted for this purpose. At this stage, when the skirt 140 is fixed on the envelope 4 thanks to the system 160, the operator manipulates and deforms the skirt 140 in order to envelop the envelope 4, thus passing from the unfolded configuration of FIG. FIG. 13 is a collapsed configuration. The self-gripping strips 174 and 175 of the system 170 come into contact with each other, so that the side 142 of the skirt 140 encloses the base 6 and the cover 8 forming the base. envelope 4. The longitudinal axis X1 of the housing 1 is then located in the tubular space defined by the band 141, while the opening 13 is located between the sides 142 and 143 along this axis X1. The side 143 of the skirt 140 surrounds the cables 30 on the side 12 of the casing 1, but without tightening the cables 30 to seal at the opening 13. Thanks to the junction system 170, the operator not to perform the manipulation of inserting the cables into a grommet, which saves time. Then, the operator actuates the clamping system 150, so that the side 143 is deformed by tightening on the cables 30, thereby achieving the desired sealing around the cables 30, thus protecting the opening 13. In a comparable manner in Figure 2, the housing 1 and the skirt 140 are then in the configuration of use, where the seal between the inside 9 and the outside of the casing 4 is ensured. In Figure 15 is partially shown a fourth embodiment of a housing 1 according to the invention. More precisely, FIG. 15 shows a skirt 240 in the non-use configuration, adapted to equip the casing 4 of FIGS. 1 to 10, not shown in this FIG. 15. Certain elements constituting the skirt 240 are similar to the constituent elements of FIG. the skirt 40 of the first embodiment described above, and have the same reference numeral increased by 200. This is the cylindrical strip 241 of axis X240, sides 242, 243, 244 and 245, of the housing 249, of the clamping system 250, the mounting system 260 and the joining system 270. Unlike the first embodiment, the clamping system 250 comprises a strap 253 slidably mounted in the housing 249. The strap 253 has two ends 254. and 255 located out of the housing 249, the end 254 being provided with a clamping loop 251. Thus, when the end 255 is pulled through the buckle 251, the side 243 of the skirt 240 can be tightened tightly. In addition, the mounting system 260 comprises a cord 263 disposed in a housing 246 which goes around the belt 241 on the side 242. The cord 263 has two ends 264 and 265 shaped in a node and located outside the housing 246. A clamping member 261 of the "stop-cord" type is arranged on the cord 263 at its end 264. By manipulating the member 261, the operator can tighten the side 242 of the skirt 240 on the In addition, the junction system 270 is configured as a zipper. The sides 244 and 245 of the band 241 can be secured by a band 272 provided with teeth, with a connecting element 271 located on the side 243 and a slider 273 sliding between the side 243 and the side 242. Thus, the operator can manipulating the skirt 240 between its folded and unfolded configurations. As a variant not shown, the mounting and clamping systems of the skirt may consist of two similar cords, or two similar straps, provided with their respective clamping members. In Figure 16 is shown partially a fifth embodiment of a housing 1 according to the invention. More precisely, FIG. 16 shows a skirt 340 in the non-use configuration, adapted to equip the casing 4 of FIGS. 1 to 10, not shown in this FIG.

Some constituent elements of the skirt 340 are similar to the constituent elements of the skirt 40 of the first embodiment described above, and bear the same numerical reference increased by 300. This is the cylindrical strip 341 of axis X340, the upper side 342, the lower side 343, the sections S342 and S343, the housing 347, the clamping system 350, the clamping member 351 slidably mounted on the cord 353 provided with two ends 354 and 355, and the system Unlike the previous embodiments, the band 341 is in the form of a tubular sleeve centered on the axis X340 and devoid of junction system. The sleeve 341 in non-use configuration has a cylindrical profile, while the sleeve 341 in use configuration has an approximately frustoconical profile tightened at its side 343. Furthermore, the mounting system 360 comprises an elastic band arranged in an annular housing 348 formed in the vicinity of the side 342 of the sleeve 341. This elastic band 360 of substantially annular shape is provided to tighten around the casing 4, so that the section S342 matches the contours of the casing 4. The elastic band 360 makes it possible to position the skirt 340 on the envelope 4 and then to easily move the skirt 340 away from the opening 13 during a maintenance operation. Thus, the skirt 340 can be attached to a casing 4 of casing 1 already installed without requiring an adjustment of the zone 20. If necessary, the skirt 340 can slide around all the cables 30, which is simpler than the independent passage of each cable imposed by certain existing sealing devices. Then, the seal can be achieved by actuating the clamping system 350 fitted to the skirt 340, with the 343 side section S343 which is clamped around the cables 30, similarly to the previous embodiments.

Alternatively, when the sleeve 341 is elastomeric material, the skirt 340 does not comprise an elastic band forming the mounting system. In this case, because of its intrinsic properties of elastic deformation, the sleeve 341 constitutes the mounting system of the skirt 340 on the casing 4. Also, the sleeve 341 is likely to constitute the clamping system of the skirt 340 on the cables 30. Whatever the embodiment, the skirt comprises mounting means on the casing 4, as well as clamping means on the cables 30. The dimensions of the sides 42 and 43 of the skirt 40, as well as the constituent elements of the systems 50 and 60 are adapted to the configuration of the envelope 4, in particular its shape and its external dimensions. In addition, the technical characteristics of the various embodiments may be, in whole or for some of them, combined with each other. In particular, the skirt can be equipped with different mounting and clamping systems. Thus, the housing incorporating the sealing skirt can be adapted in terms of functionality and cost.

Claims (12)

CLAIMS1.- Electrical connection box (1) for street lighting or road signs, comprising: a casing (4) housing, at least one opening (13) for passage of cables (30) formed in the casing, and a connection device (26) disposed inside (9) of the casing and adapted to receive the cables through the aperture (s) (13), characterized in that the casing (1) comprises at least one skirt flexible member (40; 40; 140; 240; 340) disposed near one or each opening (13), the or each skirt being provided with: - a system (60; 160; 260; 360) of mounting this skirt on the envelope (4) and - a system (50; 150; 250; 350) for clamping this skirt around cables (30) penetrating the envelope through the opening (13). 2. A connection box according to claim 1, characterized in that the skirt (40; 40 '; 140; 240; 340) is deformable between several configurations, including: at least one non-use configuration (FIG. 9) in which the clamping system (50; 150; 250; 350) is released, and a configuration of use (Fig. 2) in which the clamping system (50; 150; 250; 350) is clamped and the skirt (40; 40 '; 140; 240; 340) sealing around cables (30) penetrating the envelope (4) through the opening (13). Connection box according to claim 2, characterized in that the skirt (40; 40 '; 140; 240; 340) in use configuration has a profile surrounding a central axis (X40; X140; X240; X340). , in particular centered on this central axis, with: a first side (42; 142; 242; 342) surrounding the envelope (4) delimiting a first section (S42; S142; S342) and comprising the mounting system (60) and a second side (43; 143; 243; 343) delimiting a second section (S43; S143; S343) and including the clamping system (50), the area of the first section (S42; S142; S342) being greater than or equal to the area of the second section (S43; S143; S343). 4. Connection box according to one of the preceding claims, characterized in that the mounting system (60; 160; 260; 360) is at least partially removable and / or deformable and configured so that the attachment of the skirt ( 40; 40 '; 140; 240; 340) to the envelope (4) is reversible. Connection box according to one of claims 1 to 4, characterized in that the mounting system (60; 160; 260) comprises a clamp (60), a cord (260) or a strap, integrated to the skirt (40; 240) and able to be tightened around the envelope (4). 6.-junction box according to one of claims 1 to 4, characterized in that the mounting system (360) of the skirt (340) on the casing (4) is constituted by a material of the skirt (340). ) having elastic properties or by an elastic element integrated in this skirt (340). 7. Connection box according to one of claims 1 to 6, characterized in that the clamping system (50; 150; 250; 350) comprises a clamp (50), a bead (150; 350) or a strap (250), integrated in the skirt (40; 40 '; 140; 240; 340) and able to be clamped around cables (30) penetrating the envelope (4) through the opening (13). 8.- junction box according to one of claims 1 to 6, characterized in that the clamping system (350) is constituted by a material of the skirt (340) having elastic properties or by an elastic element integrated in this skirt (340). 25 9. Connection box according to one of the preceding claims, characterized in that the skirt (40; 40 '; 140; 240; 340) is made of synthetic or natural fabric, in particular coated polyester, or elastomer, in particular silicone or EPDM. 10. Connection box according to one of claims 1 to 9, characterized in that the skirt (40; 40 '; 140; 240) is in the form of a rectangular band (41; 141; 241). forming, in use configuration, an overlap between two opposite edges (44, 45; 144, 145; 244; 245). 11. Connection box according to the preceding claim, characterized in that in the use configuration of the skirt (40 '; 140; 240), the edges (44, 45; 144, 145; ) are held by a reversible junction system (70; 270) between these opposite edges. 12. A connection box according to one of claims 1 to 9, characterized in that the skirt (340) is in the form of a tubular sleeve (341).