SECURE HANGING DEVICE FOR SUSPENDING AN ELECTRICAL BOX AND ELECTRICAL BOX EQUIPPED WITH SUCH A DEVICE

Abstract

A secure hanging device for suspending an electrical box from a structural element of an exhibition stand, such as a post, a cross member or a partition, which comprises an elongated body securely attached at one of its ends to means of attachment to the structural element and having at its other end, called the "free end", locking means complementary to locking means provided on the electrical box, the elongated body being configured to be inserted at least in part into a sleeve attached to the electrical box, up to a position called the "locking" position in which the locking means of the hanging device are in position to be locked with the locking means of the electrical box and in which the means of attachment of the hanging device to the structural element are inaccessible in the locking position.An electrical box and an assembly comprising a hanging device and an electrical box. Figure for the abbreviation: [Fig 2].

Description

Title of the invention: SECURE HANGING DEVICE FOR SUSPENDING AN ELECTRICAL BOX AND ELECTRICAL BOX EQUIPPED WITH SUCH A DEVICE TECHNICAL FIELD OF THE INVENTION

[0001] The present invention relates to a secure hanging device for suspending an electrical enclosure from a support. The present invention also relates to an electrical enclosure configured to be suspended by such a device. Said support is in particular a metal post or partition, of the type used in exhibition stands set up at trade fairs. STATE OF THE ART

[0002] An exhibition stand is a temporary structure, usually constructed from metal poles, partitions, and various furnishings and equipment. The exhibition stand is often located in a space rented from the owner of an exhibition building, among several others, in a hall designed to host events such as trade shows, seminars, conferences, or business operations. The function of a stand is to allow an exhibitor to attract the attention of visitors, to create an environment conducive to interaction, and most often to showcase a product, service, or organization.

[0003] Exhibition stands are commonly equipped with devices requiring a power supply. For practical, safety, or regulatory reasons, each stand may have its own independent electrical box, equipped with a main disconnect switch and residual current protection. This electrical box is most often placed directly on the floor, in the space reserved by the exhibitor.

[0004] This independent electrical cabinet encroaches on the usable floor space rented by the exhibitor. Furthermore, intermediate distribution cables and cabinets can also clutter the exhibitor's space or reduce the usable floor space available for rent to the building owner. To minimize this clutter, one solution is to miniaturize the electrical cabinets. Another solution, which can be combined with the first, is to conceal the electrical cabinet in specially designed booths inaccessible to the public, or to conceal the cabinet and other electrical equipment in a raised floor beneath the booth. These solutions are not entirely satisfactory because they clutter the space rented by the exhibitor and / or prevent the exhibition building owner from renting out part of the space. reserved for specially designed stands or because they complicate access to electrical equipment.

[0005] Another problem faced by exhibitors is the theft of electrical boxes. These thefts, which occur mainly at the end of the trade fair, are a recurring and costly problem for owners of electrical boxes. Electrical boxes, particularly miniaturized ones, are targeted by unscrupulous exhibitors or service providers operating around the event. One solution to this problem is to send electricians to remove the electrical boxes from the stands as quickly as possible before the stands are dismantled. However, this solution is not always practical, due to the unavailability of electricians, and not always feasible, depending on the stand's configuration and the electrical box's position within the stand. OBJECTS OF THE INVENTION

[0006] The present invention aims to resolve at least in part the defects detailed above, concerning electrical boxes known in the prior art.

[0007] To this end, according to a first object, the invention relates to a secure hanging device for suspending an electrical box from a structural element of an exhibition stand, such as a post, a crossbeam or a partition, the hanging device comprises an elongated body securely attached at one of its ends to means for attaching to the structural element and comprising at its other end, called the "free end", locking means complementary to locking means provided on the electrical box, the elongated body being configured to be inserted at least partially into a sleeve attached to the electrical box, up to a position called the "locking position" in which the locking means of the hanging device are in position to be locked with the locking means of the electrical box,and in which the means of attaching the fastening device to the structural element are inaccessible in the locked position.

[0008] Thanks to these provisions, the hanging device allows an electrical box to be suspended from a structural element of the stand such as a post, a partition, or a cross member. The electrical box can thus be suspended, preferably in a corner of the stand.

[0009] An electrical box or portable electrical box is a device that can be moved and lifted by hand and that provides electrical distribution to individual booths set up in exhibition buildings. The electrical box is usually powered by a three-phase electrical line and offers one or more three-phase and / or single-phase low-voltage (230 volts) electrical connection sockets and / or other connectors such as a Wieland socket for booth lighting. or a USB port, specifically a USB Type-A port for powering small electrical devices. The electrical box may be equipped with a main disconnect device (circuit breaker, switch, fuse) and a residual current device (RCD) to protect people against the risks of electric shock or electrocution.

[0010] According to the invention, the fastening device comprises means for attaching it to a structural element of the stand. When the electrical enclosure is placed in a so-called locked position, that is, when the elongated body of the fastening device is fully inserted into the enclosure's sleeve, these fastening means are rendered inaccessible. For the purposes of this application, the fastening means are "inaccessible" when it is not possible to access them to detach them without destructive action. For example, a fastening means using a screw is rendered inaccessible when it is not possible to place a tool against the screw head.

[0011] In other words, when the electrical box is put in a so-called locking position, the mechanical link connecting the electrical box and the hanging device is non-removable.

[0012] Thus, according to the invention, the fastening means that secure the attachment device to the structural element of the stand cannot be detached when the attachment device and the electrical box are arranged in the locked position. Furthermore, in the locked position, the locking means of the electrical box and the attachment device can be interlocked. Once this interlocking is achieved, the electrical box, the attachment device, and the structural element of the stand form a single, fixed unit, and it is not possible to detach the electrical box from the attachment device without the lock key (physical key, combination key, or electronic key), nor is it possible to detach the attachment device from the structural element of the stand, because the fastening means are inaccessible.

[0013] These arrangements prevent theft of electrical cabinets, while offering exhibitors a practical and aesthetically pleasing solution. Furthermore, access to the electrical cabinet for making electrical connections or operating the circuit breaker is facilitated when the cabinet is suspended from a structural element of the stand.

[0014] In embodiments, the attachment means comprise a spreader clamp configured to be fixed on a groove present on the structural exposure element, the spread of the clamp being adjusted by a screw positioned on a lateral face of the elongated body covered by the sleeve in the locking position.

[0015] The use of a spreader clamp is suitable for attaching the attachment device to a metal post of the type used in temporary structures for exhibition stands. The metal post is preferably an aluminum profile. These profiles have extensions around their circumference Radial extensions have flaps at their ends, configured so that the flaps of two successive radial extensions form longitudinal grooves that extend along the height of the profile. Advantageously, several grooves are provided around the circumference of the post; for example, the post may have two, four, six, or eight grooves. The metal post is, for example, an octagonal post from the Octanorm brand (registered trademark) or a so-called "multi-start" post from the SodemSystem brand (registered trademark). To assemble two structural elements of a stand together, or to mount equipment on the post, a spreader clamp, also called a tension lock, can be used. The spreader clamp has two jaws whose spacing can be adjusted by means of a screw.When the jaws are placed in one of the grooves of the profile and then spread apart, they rest on the radial extensions on either side of the groove, so that the spreading clamp remains locked in place in the groove.

[0016] The implementation of a spacer clamp in the hanging device of the invention makes it possible to attach the hanging device to the metal poles already widely used for temporary exhibition hall structures. Furthermore, the spacer clamp allows the hanging device to be positioned anywhere along the groove, thus enabling adjustment of the height at which the hanging device is placed.

[0017] In embodiments, the fastening means comprise a plate with holes provided to house screws for fixing the fastening means to a structural element of the stand, in particular a partition, the holes being positioned to be covered by the electrical box in the locked position.

[0018] By "covered" by the electrical enclosure, it is understood that the surface on which the holes are drilled is in contact with a surface of the electrical enclosure or adjacent to the electrical enclosure at a short distance, on the order of a few millimeters to a few centimeters, such that it is not possible to insert a tool to access the hole where the screw head is located. Thanks to these arrangements, it is not possible to detach the mounting device from a partition on which it is mounted without first detaching the electrical enclosure from the mounting device.

[0019] According to this embodiment, the attachment means for the hanging device uses, for example, a screw-nut type fastener, a screw type cooperating with a wall plug, or a screw screwed directly into a partition. This embodiment allows the hanging device to be fixed to any partition and has the advantage of allowing the user to position the hanging device wherever they wish.

[0020] In some embodiments, the locking means for the fastening device comprise: - a spreader placed at the free end of the elongated body, said spreader being configured to rotate a hooked cam around its axis when the cam is pressed against the spreader and - a latch configured to hold the cam hook in the locked position.

[0021] Thanks to these provisions, the locking of the electrical box with the hooking device can be easily achieved by engaging the elongated body of the hooking device in the sleeve of the electrical box, so as to bring the cam into contact with the spreader which rotates the cam on its axis and then allows the hook to engage in the strike plate.

[0022] In embodiments, the hanging device includes a cable gland having at least one fin configured to enclose a cable positioned in the cable gland between the at least one fin and the electrical box, when the hanging device is in the locked position with the electrical box.

[0023] The expression "enclosing the cable" means that, in the locked position, the cable is surrounded by at least one fin and by the electrical enclosure, such that it is not possible to separate the cable from the assembly formed by the attachment device and the electrical enclosure without damaging or destroying the cable, the attachment device, or the electrical enclosure. Preferably, the dimensions of at least one fin are designed to surround the cable without constricting it. Thus, it is possible to slide the cable through the cable gland, but it is impossible to slide the electrical connector located at the end of the electrical cable through the cable gland.

[0024] Preferably, the cable pass-through is designed to allow the passage of a single-phase power cable of type H07RNF 3G2.5, 3G4 or 3G6 intended to supply the electrical cabinet via an electrical connector located on the rear part of the electrical cabinet or a three-phase power cable of type H07RNF 5G2.5 intended to supply the electrical cabinet via a cable entry of the type cable gland.

[0025] Thanks to these features, the cable gland helps discourage theft of the cable, which cannot be easily separated from the electrical enclosure. Furthermore, the presence of a cable in the cable gland further discourages theft of the electrical enclosure, which would then require cutting or removing the cable while it is live.

[0026] According to a second aspect, the invention relates to an electrical enclosure configured to be suspended from a structural element of an exhibition stand, such as a post, a crossbeam, or a partition, by means of a secure hanging device. The electrical enclosure comprises a sleeve configured to be inserted around an elongated body of the hanging device, said elongated body being securely attached. at one end to means for attaching to the structural element and having at its other end, called the "free end", locking means the electrical box further comprising locking means complementary to those of the attachment device, so that the insertion of the elongated body into the sheath up to a position called the "locking" position puts the locking means of the electrical box in position to be locked with the locking means of the attachment device and in which the means of attaching the fastening device to the structural element are inaccessible in the locked position.

[0027] In embodiments, the locking means comprise a cam actuated by a lock and a window drilled in the sleeve allows the passage of the cam.

[0028] In some embodiments, the lock is mounted on a plate that is securely fixed to the electrical box. Preferably, an indexing screw fixed on one side to the sleeve and on the other side to the lock plate ensures correct positioning of the sleeve relative to the lock cam.

[0029] In some embodiments, the shape of the electrical box is configured to allow installation in a right angle formed by two partitions.

[0030] According to these provisions, two faces of the enclosure, intended to be positioned opposite or against said two partitions, form a right angle with each other. Positioning the electrical enclosure in a corner of the stand minimizes its overall size.

[0031] In some embodiments, the electrical enclosure comprises a protective shell having a housing configured to accommodate the sheath. The protective shell preferably has a shape complementary to the elements forming the body of the electrical enclosure. The shell is advantageously configured to house the body of the enclosure containing the electrical components of the electrical enclosure. The body of the electrical enclosure is preferably inserted into the shell through an opening provided on its front face. In addition, the shell has a housing configured to accommodate the sheath on the rear face of the shell. Permanent fastening means, such as rivets, are preferably used to secure the body of the electrical enclosure to the shell.

[0032] Preferably, the protective shell is formed from a shock-resistant material, for example, plastic or synthetic rubber. Preferably, the protective shell is a part obtained by rotomolding.

[0033] According to a third aspect, the invention relates to an assembly comprising a hanging device and an electrical box, which are the subject of the invention.

[0034] The aims, advantages and particular characteristics of the assembly comprising a hanging device which is the subject of the present invention being similar to those of the hanging device and the box which are the subjects of the present invention, they are not recalled here. BRIEF DESCRIPTION OF THE FIGURES

[0035] Other advantages, purposes and particular features of the invention will become apparent from the following non-limiting description of at least one particular embodiment of the hanging device and electrical box that are the subject of the present invention, with reference to the accompanying drawings, in which: [Fig. 1] schematically and in perspective view represents a first particular embodiment of an electrical box, partially engaged in a secure fastening device according to a first particular embodiment, [Fig.2] schematically represents, in side view, an electrical box according to the first embodiment, engaged in the locked position in a latching device according to the first embodiment, [Fig.3] schematically represents, in perspective, the hanging device according to its first embodiment, [Fig.4] schematically represents, in perspective, the hanging device according to its first embodiment, [Fig. 5] schematically represents, in perspective, a second particular embodiment of a hanging device, [Fig.6] schematically represents, in perspective, the fastening device according to the first embodiment, shown positioned opposite the locking means of an electrical box according to its first embodiment, [Fig.7] schematically and in perspective represents the locking means and the sheath of an electrical box according to its first embodiment. [Fig.8] schematically and in perspective represents a hanging device partially inserted into the sheath of an electrical box according to its first embodiment, and the locking means of said electrical box; [Fig.9] schematically and in perspective represents the first particular embodiment of an electrical box, partially engaged in a hanging device according to a third particular embodiment. [Fig. 10] schematically and in perspective represents the first particular embodiment of an electrical box, engaged in the locked position in a secure fastening device according to the third embodiment, [Fig. 1 1] represents, schematically and in perspective, the hanging device according to its third embodiment, [Fig. 12] schematically and in perspective represents the fastening device according to its third embodiment, inserted in the locking position in the sheath of an electrical box, and the locking means of the electrical box, [Fig. 13] schematically and in perspective view represents a part of the rear of an electrical box according to its first embodiment, engaged in the locking position in a fastening device according to the third embodiment.

[0036] The reference numbers mentioned in the figures refer to: 105 Electrical box 108 Body of the electrical box 110 Protective Case 111 Bearing surface of the housing on the post 112 Front of the case 115 Housing on the rear face of the case 130 Sheath 131 Side view of the sheath 132 Upper face of the sheath 133 Lower face of the sheath 134 Front view of the sheath 136, 137, 138, 139 Curved edges at the open end of the sheath 140 Slot 145 Grounding connection point for the conduit 150, 152 Lock body 151 Platinum 153 Key 154 Camshaft 155 Cam hook 156 Nut 371, 372, 373, 374 Cable grommet 375 Plate 180, 280, 380 Secure attachment device for a support 182, 282, 382 Elongated body of the secure attachment device 183, 184 First and second extremities of the elongated body 185, 186, 385 Latch 387, 388, 389 Screw hole 190, 290 Adjustment screw head for the spreader clamp 191, 291 First jaw of the spreading pliers 192, 292 Second jaw of the spreading pliers 196 Indexing screw 198, 398 Spreader 199, 299 Rivet 901 Metal Post 905 Wooden partition 910 Cable 912 Electrical Connector DETAILED DESCRIPTION OF THE INVENTION

[0037] The present description is given by way of non-limiting grammar, each feature of an embodiment being able to be advantageously combined with any other feature of any other embodiment.

[0038] Figures 1 and 2 show perspective and side views of a first particular embodiment of an electrical box 105 and of a first particular embodiment of a hanging device 180, shown during the hanging of the electrical box 105 to a pole 901.

[0039] The 901 post is an aluminum profile from the supplier Sodemsystem (registered trademark). This "multi-start" post has eight radial extensions around its perimeter, each with flaps at its free end, so that the flaps of successive radial extensions form eight grooves in pairs.

[0040] The electrical enclosure 105 comprises a body, visible in Figures 10 and 11, protected by a plastic casing 110. The electrical connectors and control means for a circuit breaker, as well as any other control means, such as switches, or monitoring means, such as indicator lights, are also positioned on the front of the enclosure. The electrical enclosure 105 has a housing 115 on its rear face, formed within the casing 110, the dimensions of which are designed to accommodate a sleeve 130, which will be better understood with reference to Figures 8, 9, and 13.

[0041] The electrical box 105 has on its upper face a key lock 153 and a plate 151 riveted in place to keep the locking means of the electrical box 105 attached to the box.

[0042] When attaching the electrical enclosure 105 to the pole 901 using the attachment device 180, the jaws of a spreader clamp on the attachment device are first positioned in a groove in the pole 901. Then, the screw head 190 for adjusting the jaws is rotated by an Allen key to spread the jaws apart and clamp them against the edges of the groove. The attachment device 180 is thus reversibly secured to the pole 901. The conduit 115 of the electrical enclosure 105 is then slid into the attachment device 180 until it reaches the bottom of the conduit 115, in a so-called locking position, in which locking means of the attachment device 180 are in position to be locked with additional locking means provided on the electrical box 105.

[0043] In the locked position, the means of attaching the hooking device 180 to the post 901, i.e. the screw head 190, are inaccessible, because they are covered by the sleeve 115 of the electrical box 105.

[0044] Advantageously, the electrical box 105 has a substantially flat surface 111 at the rear of the box configured to be positioned against the post 901 when the electrical box 105 is suspended on the post 901.

[0045] Advantageously, the electrical box 105 is installed in a right-angled corner formed by two partitions (not shown). These partitions can be mounted on the same post 901 as the mounting device. The two lateral faces of the shell 110, designed to be positioned against one of said two partitions, form a right angle with each other.

[0046] Figures 3, 4 and 6 show perspective views, from the right side and the left side, of the first embodiment of a hanging device 180.

[0047] The attachment device 180 comprises an elongated body 182 configured to be inserted into the sleeve 115 of the electrical enclosure. The elongated body 182 is a hollow, rectangular parallelepiped-shaped piece having two open ends and four solid lateral faces. A first end 183 of the elongated body 182 includes a portion of the means for attaching it to a structural element of a stand. The said fastening means comprise two jaws, 191 and 192, configured to be brought together or apart by rotating the screw head 190 positioned on a lateral face of the elongated body 182. A second end 184 of the elongated body 182 comprises locking means, including a spreader 198 and a strike plate 185. The spreader 198 and the strike plate 185 are formed from a single flat metal piece, folded several times upon itself to form a pointed cross-section and pierced to form the strike plate 185.A rivet 199 secures the elongated body 182 to the folded metal piece forming the spreader 198 and the strike plate 185. Note that a window is drilled on the lateral face of the elongated body 182 to allow access to the strike plate 185 to the hook of a hook cam.

[0048] Advantageously, the elongated body has two strikes 185 and 186, symmetrically positioned on two opposite lateral faces of the elongated body 182. These arrangements allow the hooking device 180 to be placed indifferently according to the two possible vertical orientations, while retaining the locking functionality of the locking means, with either strike 185 or 186.

[0049] In [Fig. 6], the latching device 180 is shown positioned opposite the locking means of the electrical enclosure 105. The other elements of the electrical enclosure are not shown in this figure. The locking of the electrical enclosure 105 with the latching device 180 is achieved by engaging the elongated body 180 of the latching device into the sleeve of the electrical box 105. During this insertion, a hook-type cam, whose body 151 and 152 is attached to the electrical box by a plate 151, is brought into contact with the spreader 198. This contact causes the cam to pivot on its axis 154 while the leading edge of the cam slides along the spreader until the hook 155 engages in the strike plate 186.

[0050] A second particular embodiment of a latching device 280 is observed in [Fig. 5]. The latching device 280 comprises an elongated body 282 similar or even identical to the elongated body 182 described previously. The 280 attachment device is distinguished by the fact that it includes a spreader clamp with two jaws, 291 and 292, designed to cooperate with the grooves of the posts obtained from the supplier Octanorm (registered trademark).A screw 290 located on a lateral face of the elongated body 282 allows the two jaws, 291 and 292, to be opened or closed by rotating the screw head in one direction or the other. It should be noted that said screw head is inaccessible when the fastening device 280 is inserted into the sleeve 130 of an electrical box 105.

[0051] The latching device 280 further comprises a metal piece folded back on itself forming the strike plate 185 and a spreader. This metal piece is inserted into one of the open ends of the elongated body 282 and secured to the elongated body by means of a rivet 299.

[0052] It is noted that any other means of attachment known to the Man Skilled may be implemented on the hanging devices, 180 and 280, without deviating from the invention, provided that the means of attachment allows the hanging device to be attached to a structural element of the stand.

[0053] Figures 7 and 8 show the sheath 130 and the locking means of an electrical enclosure 150 according to its first embodiment. The other parts of the electrical enclosure 150 are not shown. In [Fig. 8], a shape corresponding to the profile of an elongated body of a latching device, 180 or 280, is also shown.

[0054] The sheath 130 is obtained by cutting and then folding a metal plate. The sheath 130 is an elongated piece of sufficient dimensions to be penetrated by the elongated body of the attachment device, 180 or 280. The sheath 130 is hollow and has the general shape of a rectangular parallelepiped with one end open and the other end closed. The sheath 130 has two lateral faces 131, an upper face 132, a lower face 133, and a front face 134.

[0055] The front face 134 is the closed end of the sleeve. When mounting the sleeve 130 in the housing 115 of the casing 110 of the electrical box 105, the sleeve 130 is inserted until it is fully seated in the housing 115. The sleeve thus positioned leaves the open end of the 130 conduit protruding at the rear of the 130 electrical box.

[0056] Advantageously, curved edges, 136, 137, 138 and 139, are provided at the open end of the sleeve 130. These curved edges bear against surfaces of the shell 110 provided for this purpose and are pierced with holes for passing fixing screws to the shell 110.

[0057] Advantageously, sheath 130 has a threaded stud 145 configured to receive an earthing connection from sheath 130.

[0058] The locking means for an electrical enclosure 150 shown in Figures 7 and 8 comprise a plate 151 fixed to the upper face of the electrical enclosure 150. The plate 151 is clamped by an upper portion of the lock body 150 and by a lower portion of the lock body 152. A bolt 156 secures the shaft 154 of a hook cam to the lock body, 150 and 152. The side face 131 and the front face 134 are pierced with a slot 140 sized to allow passage of the hook 155 of the cam. The slot 140 is located opposite the window cut into the elongated body of the latching device, 180 or 280, when the latching device is in the locked position in the sleeve 130.

[0059] Advantageously, an indexing screw 196 is provided to connect the plate 151 with the sleeve 130, in order to perfectly align the locking means of the electrical box 105 with the sleeve, in particular to allow good alignment of the cam with the strike plate of the latching device.

[0060] Figures 9 and 10 show the first embodiment of the electrical box 150, illustrated with a hanging device 380 according to a second particular embodiment.

[0061] The electrical box 105 comprises a body 108, a shell 110, a sheath and locking means including a plate 151 and a key 153, already described previously.

[0062] The hanging device 380 is distinguished by its configuration for attachment to a partition 905, preferably a partition made of wood. The hanging device 380 is attached to the partition 905 by means of a plate with four screw holes, two of which, 389 and 387, are arranged on a vertical axis. The hanging device comprises an elongated body 382 and a strike plate 385 configured to cooperate with the locking means of the electrical box 105. The hanging device 380 will also be better understood with reference to the description in Figures 11, 12, and 13 below.

[0063] In order to suspend the electrical box 150 from the partition 905, the hanging means was previously fixed to the partition 905 by means of screws, one screw of which was inserted into each of the screw holes 387 and 389.

[0064] The electrical box 150 shown in [Fig. 9] is shown partially inserted into the elongated body 392; it must still be pushed towards the partition in order to bring the elongated body 382 into contact with the sleeve of the electrical box 150. The electrical box 150 shown in [Fig. 10] is shown fully inserted, in a so-called locked position, in which the locking means of the electrical box 150 are in position to be locked with the locking means of the latching device 380. In this position, if the key 153 is removed, it is impossible to detach the electrical box 150 from the latching device 380 without destructive action.

[0065] It is emphasized that the screw holes 389 and 387 are positioned to be covered by the electrical box 105 in the locked position so that it is not possible to access the fastening means of the electrical box 150 when the electrical box and the fastening device are locked together.

[0066] Fig. 11 shows the second embodiment of the attachment device 380. The attachment device comprises a plate 375 with holes 387, 388, and 389, configured to receive screws for fixing the plate to a partition. It should be noted that the screws can advantageously be replaced by any other fastening system known to those skilled in the art, without departing from the invention. The plate 375 is fixed by rivets to an elongated body 382 configured to be inserted into the sheath of the electrical box 150. The elongated body 382 is formed from a metal strip folded several times to form a V-shaped point, extended from the point by two parallel lateral faces and folded again at their ends at 90 degrees to form a base configured for riveting the plate 375.The tip of the elongated body 382 forms a spreader 398 configured to rotate the pivoting hook cam of the electrical box 150.

[0067] Advantageously, the attachment device 380 includes a cable gland having at least one fin. For example, four fins 371, 372, 373, 374 are attached to the plate 375. The cable gland will be better understood with reference to [Fig. 13].

[0068] In [Fig. 12] we observe the locking means of the hooking device 380, including the spreader 398 and the strike plate 385, engaged in the locked position with the locking means of the hooking device 380. The interaction of the rotating hook cam with the spreader 398 and the strike plate 385 being similar to the interaction between the rotating hook cam with the spreader 198 and the strike plate 185 described opposite the previous figures, it is not described again here.

[0069] It is emphasized at this stage that the locking means of the electrical box and the hanging device given as examples in this description, which include a key lock system, could be replaced by any other locking means such as a mechanical code lock or a digital keypad.

[0070] Figure 13 shows the rear of an electrical enclosure 150 fixed to a partition wall by means of a mounting device 380. For clarity, the partition wall is not shown. The mounting device 380 includes a cable gland formed by the fins 371, 372, 373, and 374. The cable gland is configured to enclose a cable 910 positioned between said fins and the rear face of the electrical enclosure 150 when the mounting device 380 is in the locked position with the electrical enclosure 150.

[0071] Advantageously, the dimensions of the electrical box 150 and the fins 371, 372, 373, 374 which together form the cable pass-through are provided sufficiently wide to allow the cable 910 to slide in the cable pass-through, but too narrow to allow an electrical connector 912 which is at the end of the electrical cable 910 to pass through, so as to block said connector and the cable in the electrical cable pass-through 910 to which it is attached in the cable pass-through.

Claims

Demands

1. A secure hanging device (180, 280, 380) for suspending an electrical enclosure (105) from a structural element (901, 905) of an exhibition stand, such as a post, crossbeam, or partition, characterized in that it comprises an elongated body (182, 282, 382) rigidly attached at one of its ends to attachment means (186, 187, 188, 191, 291, 292) to the structural element (901, 905) and comprising at its other end, referred to as the "free end," locking means (185, 198) complementary to locking means (152, 153, 154, 155) provided on the electrical enclosure (105), the elongated body (182, 282, 382) being configured for a being inserted at least partially into a sheath (130) integral with the electrical box, up to a so-called "locking" position in which the locking means of the hanging device are in position to be locked with the locking means of the electrical box,and in which the means of attaching the fastening device to the structural element are inaccessible in the locked position.

2. Secure fastening device (180, 280) according to claim 1, wherein the fastening means comprise a spreader clip (191, 291, 292) configured to be fixed on a groove present on the structural element of the stand, the spread of the clip being adjusted by a screw positioned on a lateral face of the elongated body covered by the sleeve in the locked position.

3. Secure fastening device (380) according to claim 1, wherein the fastening means comprise a plate (375) with holes (387, 389) provided to house screws for fixing the fastening means to a structural element of a stand, in particular a partition (905), the holes being positioned to be covered by the electrical box (105) in the locked position.

4. A latching device (180, 280, 380) secured according to any one of claims 1 to 3, wherein the locking means of the latching device comprise: - a spreader (198) located at the free end of the elongated body, said spreader being configured to rotate a cam at hook (155) around its axis (154) when the cam is pressed on the spreader and - a latch (185) configured to retain the hook of the cam beater in the locked position.

5. Secured hanging device (180, 280, 380) according to any one of claims 1 to 4, comprising a cable gland having at least one fin (371, 372, 373, 374) configured to enclose a cable (910) positioned in the cable gland between the at least one fin and the electrical box, when the hanging device is in the locked position with the electrical box.

6. An electrical enclosure (105) configured to be suspended from a structural element (901, 905) of an exhibition stand, such as a post, crossbeam, or partition, by means of a secure hanging device (180, 280, 380), characterized in that it comprises a sleeve (130) configured to be inserted around an elongated body (182, 282, 382) of the hanging device, said elongated body being securely attached at one of its ends to attachment means (387, 388, 389, 191, 192, 291, 292) to the structural element and comprising at its other end, referred to as the "free end," locking means (185, 198), the electrical enclosure further comprising locking means (152, 153, 154, 155) complementary to those of the hanging device,so that the insertion of the elongated body into the sheath until it reaches a so-called "locking" position puts the locking means of the electrical enclosure in a position to be locked with the locking means of the fastening device, and in which the means of attaching the fastening device to the structural element are inaccessible in the locked position.

7. Electrical box (105) according to claim 6, in which the locking means comprise a hook-type cam (155) actuated by a lock (150, 152) and in which a window cut into the sleeve allows the passage of the cam.

8. Electrical cabinet (105) according to any one of claims 6 or 7, wherein the shape of the electrical cabinet is configured to install it in a right angle formed by two partitions.

9. Electrical box (105) according to any one of claims 6 or 8, which includes a protective shell (110) having a housing (115) configured to house the sheath (130).

10. Assembly comprising a hanging device (180, 280, 380) according to any one of claims 1 to 5 and an electrical box (105) according to any one of claims 6 to 9.

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