FR2817675A1 - Clip for securing cable ways to support, comprises elastic wire member in one piece which has a first hooked section in one plane and second gripping section as open square in orthogonal plane - Google Patents

Abstract

The clip comprises a continuous member made from elastic wire which engages a cable way wire with a first hooked shaped section (4) in a first plane (P1), a transition section (6) and a second gripping section with segments (7,8,9) in an orthogonal plane (P2). The segments of the gripping section of the clip are arranged as the sides of an open square and engage with the cable way support plate. Independent claims are made for applications of the clip to various types of cable way.

Description

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WIRE ELASTIC FASTENER FOR FIXING
CABLE PATHS ON A SUPPORT
The invention relates to the technical field of cable trays, and more particularly relates to elastic wire fastening devices for fixing cable trays to their supports.

 The invention relates more particularly to the use of such elastic wire ties for fixing cable trays in wire mesh on their supports.

 As will be understood by a person skilled in the art, the fastener according to the invention can be implemented on cable trays other than wire trellises, in particular of the trunking type.

 Wire mesh cable trays are conventionally produced by assembling: longitudinal wires, commonly called warp wires, running longitudinally, typically straight or almost straight over their entire length; transverse threads, commonly called weft threads, established transversely, from place to place, along these warp threads.

 The warp threads and the weft threads are most often made of metal alloy and their assembly is conventionally carried out by welding.

 The weft threads are typically U-shaped, so that the trellis cable tray comprises a bottom panel and two side panels, commonly called wings.

 The term son used here for cable trays denotes both solid sections of substantially oval or circular cross section, as well as sections of square, rectangular or polygonal cross section.

 The weft threads may in particular be in the form of narrow strips, of rectangular cross section.

 Such wire mesh cable trays are commonly used to support, house and protect electrical cables, telecommunications cables or fibers or the like.

 Examples of such cable trays can be found in the following documents:

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French patent applications published under the numbers 2 376 539, 2 576 158, 2 599 906, 2 613 146, 2 617 341, 2 628 904,
2,634,600.2 645,359.2 652,206.2 652 142.2 669,708.2 686,393, 2,687,207, 2,691,590, 2,697,313, 2,697,690, 2,698,416, 2,706,973,
2,716,242.2 716,768.2 723,270.2 725,772.2 725,846.2 727,186,
2,728,649.2 734,503.2 737,355.2 750,754.2 766,897; European patent applications published under the numbers
0191667,0229544, 0275185,0298825, 0352191,0355081,
0390668.0399790, 0418167.0553039, 0556137.0571307,
0617493.0718944, 0818862, 0905843; international patent applications published under numbers
96 / 08063.99 / 06746; German patent applications published under the numbers
DE-A-2036325, DE-A-4037412, DE-4336168.

 For wire mesh cable trays, elastic thread ties are already known in the prior art.

 Thus, document FR-A-2 716 242 describes such a fastener comprising a central part and ends which are folded so as to constitute means for tensioning the fastener during its fixing, the central part being extended by on either side by horizontal parts, namely a first horizontal part connected to a vertical branch with a free end folded in a hook, and a second horizontal part connected to a vertical branch with a free end in a helix or pigtail, the assembly of the fastener extending substantially in the same plane.

 Reference may also be made to documents US-A-1,929,302, US-A-1,611,783, US-A-3,521,842.

 The invention aims to provide a new elastic wire fastener for fixing cable trays to their supports, this new fastener being at the same time less expensive, easier and quick to install, less visible after installation and therefore more aesthetic as the fasteners known to date, this new fastener also ensuring the adjustment of the alignment of the cable trays on their supports.

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 To this end, the invention relates, according to a first aspect, to an elastic wire tie for fixing cable trays to a wall of a support, this tie comprising, connected by a connecting section, a first section in hook shape extending along a first plane P1, a second section extending along a plane P2 substantially perpendicular to the plane P1, this second section comprising at least a first segment of wire extending perpendicular to the first section in the form of hook and next to it.

 According to various embodiments, the fastener has the following characters, possibly combined: your second section is U-shaped or V-shaped and comprises, in addition to said first segment of wire, a second and a third segment of wire; te first and third segment of wire, substantially parallel to each other, are of the same length; te second segment of wire is substantially the same length as the first and second segment of wire; your first hook-shaped section extends substantially mid-length of said first segment of wire, in a plane perpendicular thereto.

 The invention relates, according to a second aspect, to a device for mounting a cable tray using a clip as presented above, this device comprising a support surface for the base wall of a cable tray, this support surface being provided with a through hole whose opening is suitable for allowing the passage of the first hook-shaped section of the fastener, the width of the through hole being less than the length of said first wire segment.

 In one embodiment, the support surface is provided with two substantially parallel wings, thus forming a U-shaped profile with an opening facing away from the base wall of the cable tray, the distance between the wings being greater than the length. of said first segment.

 The invention relates, according to a third aspect, to the application of the device as presented above to the fixing of a cable tray in wire mesh on

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 the support surface of a console profile, a wire from the base wall of the cable tray being pressed, by elastic deformation of the fastener, against said support surface, the hook-shaped section and the first segment of wire acting in the manner of two jaws of an elastic clamp gripping the wire of the cable tray and the support wall of the console against each other.

 The invention relates, according to a fourth aspect, to the application of the device as presented above to the fixing of a rolled edge of sheet metal on the support surface of a console profile, this rolled edge being plated, by elastic deformation of the fastener, against said support surface, the hook-shaped section and the first segment of wire acting in the manner of two jaws of an elastic clamp pliers coming to grip the edge against each other rolled, of substantially cylindrical section, and the support wall of the console.

 Other objects and advantages of the invention will appear during the following description of embodiments, which description will be made with reference to the accompanying drawings in which: FIG. 1 is a side plan view of a fastener wire according to an embodiment of the invention; your Figure 2 is a partial cross-sectional view of a fastener of the type shown in Figure 1, this fastener being seen in Figure 2 when it is in place for fixing a cable tray in wire mesh on a console support, this cable tray and this console being shown partially in section along a plane substantially perpendicular to the warp threads; ta Figure 3 is a view similar to Figure 2, the fastener being seen in its mounted position; - Figure 4 is a side view along the plane IV-IV of Figure 3; ta Figure 5 is a view similar to Figure 1 of an alternative embodiment of the fastener; ta Figure 6 is a view of the mounting of the clip of Figure 5, in four successive states of the mounting operation; your Figure 7 is a view similar to Figure 1 of an alternative embodiment of the fastener;

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ta figure 8 est une vue du montage d'une attache telle que représentée en figure 5, pour la fixation d'un bord roulé de tôle sur une console support, ce bord roulé étant par exemple un rebord de goulotte.

your Figure 8 is a view of the mounting of a fastener as shown in Figure 5, for fixing a rolled edge of sheet metal on a support console, this rolled edge being for example a flange edge.

 The fastener 1 is made of an elastic material such as for example a metal alloy.

 In the embodiments shown, the wire is solid and of round section. It is understood, however, that the term wire used for the fastener designates profiles of substantially oval or circular cross section as well as profiles of square or rectangular or polygonal cross section, these profiles being solid or tubular.

 The fastener is intended for mounting cable trays on support brackets, these cable trays being in particular, but not exclusively in wire mesh.

 We first refer to Figure 1.

 When viewed in plan, the fastener is inscribed in a substantially square envelope E, in dashes in FIG. 1.

 Starting from its first free end 2 and going towards its second free end 3, the wire tie 1 comprises two main sections connected by a connecting section.

 More specifically, the fastener 1 comprises a first section 4 curved in a hook according to a first plane P1, and a second section 5 curved in a U according to a second plane P2 substantially perpendicular to the first plane P1, a connecting section 6 connecting the first section 4 and the second section 5.

 The second main section 5 comprises, starting from its free end 3 and going towards the connecting section 6: a first segment 7 extending in a direction D1; a second segment 8 extending in a direction D2 substantially perpendicular to the direction D1; a third segment 9 substantially parallel to the first segment 7.

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 In the embodiment shown, the three segments are substantially rectilinear and of the same length and are interconnected by connection fillets with substantially identical radius of curvature.

 In other embodiments, not shown, the first segment and the third segment are of different length from that of the second segment.

 Referring now to Figures 2 to 4 which illustrate the establishment of a fastener 1 as described above, for mounting on its support a cable tray in wire mesh.

 The structure of the wire mesh, known in itself and presented in the introduction, will not be described here.

 The support 10 such as a console or the like has a U-shaped section, the base wall 11 of which forms a support for the bottom wall of the cable tray, namely, in the case of a wire mesh cable tray, for warp threads 12.

 The base wall 11 of the support 10 is provided with at least one through hole 13 through which the first bent hook section 4 of the clip 1 can be introduced.

 During this introduction of the hook into the hole 13, as shown in FIG. 2, the first hook section 4 comes to bear on the part of a warp thread 12 which is located between two weft threads 14 of the wall of the cable tray.

 The plane P2 of extension of the second section 5 of the fastener is then inclined relative to the base wall 11 of the support 10 (of substantially 900 in the state shown in FIG. 2), and the first segment 7 is in look at the underside 15 of the wall 11.

 The length L7 of the first segment 7 being greater than the opening width 113 of the through hole 13, as it clearly appears in FIG. 4, the warp thread 12 will thus be able to be pressed against the support 10, by the rotation according to arrow R of the fastener 1, rotation leading to the deformation of the first section 2 of the fastener 1.

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This rotation R passes the fastener from the state of FIG. 2 to that of FIG. 3, in which the extension plane P2 of the second section 5 of the fastener 1 is substantially parallel to the base wall 11 support 10.

 As shown in Figures 2 and 3, the first hook-shaped section 4 includes two curved segments connected by a substantially straight segment. By this configuration, the fastener 1 easily pivots around the warp thread 12, the segment 7 forming a pivot axis and the segment 8 acting as a lever arm for the elastic deformation of the fastener.

 To increase this lever arm, in certain embodiments, the second segment 8 can be longer than that shown in FIG. 2 and thus be longer than that of the third segment 9.

 In the embodiment shown in FIG. 3, the through hole 13 extends over a length L13 such that the third segment 9 of the clip 1 is not opposite the opening of this hole 13, for the position drawn warp thread. However, as soon as the length L9 of this third segment 9 is greater than the opening 113 of the hole 13, it goes without saying that this hole 13 can extend over any length L13 compatible with the desired positions of the warp threads 12 .

 Advantageously, the lengths L7, L9 of the segments 7.9 are substantially equal and slightly less than the width L15 separating the two wings 15a, 15b forming with the wall 11 the U-shaped profile of the support 10. Thus, the operator can benefit from the guidance of the fastener 1 sliding in the U-shaped profile of the support 10, the two wings 15a, 15b being substantially parallel.

 As it appears in FIG. 4, the through hole 13 extends substantially at mid-width of the base wall 11, the first section 4 of the fastener extending substantially at mid-width of the segments 7, 9. Although this arrangement ensures a good distribution of forces, the first hook section 4 can extend in other embodiments not shown, closer or further from the second segment 8, in particular when the opening 13 of the wall 11 is not arranged at mid-width between the wings 15a, 15b.

 As will be understood by a person skilled in the art: your wall 11 may or may not be horizontal;

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 one, two or more than two fasteners can be placed on each support 10, the hooked sections 4 of the fasteners all being oriented in the same direction or at least two of the fasteners being arranged with their sections 4 facing one of the other ; - The fastener 1 can be used for any cable tray comprising holes on its bottom wall, holes allowing the passage of section 4 in the form of a hook. Thus, the fastener can be used for fixing cable trays in wire mesh or not; if, as shown, a warp thread can be used for mounting the fastener, it is understood that a similar mounting can be obtained with a weft thread, if necessary; if, as shown, an external warp thread can be used for mounting the fastener, it is understood that a similar mounting can be obtained with an internal warp thread.

 As it appears in FIG. 4, the fastener 1 is masked by the wings 15a, 15b and does not project over a great height below the wall 11, its masking thus being easily obtained.

 FIG. 5 illustrates an alternative embodiment of the fastener, a variant in which the connecting section 6 is inclined relative to the plane P2 of the second section 5.

 When the fastener shown in Figure 5 is used for fixing a cable tray, as shown in Figure 6, the connecting section 6 and the second section 5 come, by elastic deformation, to be placed in substantially the same plane.

 Referring now to Figure 7 which illustrates an alternative embodiment of the fastener.

P1 ; Starting from its first free end 2 and going towards its second free end 3, the fastener shown in FIG. 7 comprises: a first section 4 bent in a hook along a first plane

P1;

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une seconde section 5 courbée en V selon un deuxième plan P2 sensiblement perpendiculaire au premier plan P1, cette deuxième section comprenant un premier segment 7 formant pivot lors de la mise en place de l'attache.

a second section 5 curved in V according to a second plane P2 substantially perpendicular to the first plane P1, this second section comprising a first segment 7 forming a pivot during the positioning of the fastener.

 FIG. 8 illustrates the use of a fastener as shown in FIG. 5, for mounting a rolled edge of sheet metal 20 on a support 10.

 The fastener 1 is shown in an assembly stage identical to that referenced-b-in FIG. 6.

 The rolled edge 20 can, for example, be the edge of a cable tray of the trunking type.

 The fastener 1, inexpensive is easy to set up, especially when the U-shaped support allows its guiding in translation.

 The free end portions of the fastener are arranged in such a way, when the fastener is mounted, that they cannot injure the cables contained by the cable tray.

Claims (9)

 1. Elastic wire tie for fixing cable trays to a wall of a support, characterized in that it comprises, connected by a connecting section (6), a first section (4) in the form of a hook s extending along a first plane P1, a second section (5) extending along a plane P2 substantially perpendicular to the plane P1, this second section (5) comprising at least a first segment of wire (7) extending perpendicular to the first hook-shaped section (4) and facing it. 2. elastic fastener according to claim 1, characterized in that the second section (5) is U-shaped or V-shaped and comprises, in addition to said first wire segment (7), a second (8) and a third wire segment (9). 3. Elastic fastener according to claim 2, characterized in that the first (7) and the third wire segment (9), are substantially parallel to each other and are of the same length. 4. Elastic fastener according to claim 3, characterized in that the second segment of wire (8) is substantially the same length as the first and the second segment of wire (7,9). 5. elastic fastener according to any one of claims 1 to 4, characterized in that the first hook-shaped section (4) extends substantially mid-length of said first segment of wire (7), in a perpendicular plane to this one. 6. Device for mounting a cable tray using a fastener as presented in any one of claims 1 to 5, characterized in that it comprises a support surface (10) for the wall of base of a cable tray, this support surface (10) being provided with a through hole (13) whose opening is adapted to allow the passage of the first hook-shaped section (4) of <Desc / Clms Page number 11>  the fastener (1), the width (113) of the through hole (13) being less than the length (L7) of said first segment of wire (7). 7. A mounting device according to claim 6, characterized in that the support surface (10) is provided with two wings (15a, 15b) substantially parallel, thus forming a U-shaped profile with opening facing away from the wall of base (11) of the cable tray, the distance between the wings being greater than the length of said first segment (7). 8. Application of the device, as presented in claims 6 or 7, to the fixing of a wire mesh cable tray on the support surface of a console profile, a wire from the base wall of the cable tray being pressed, by elastic deformation of the fastener (1), against said support surface (10), the hook-shaped section (4) and the first segment of wire (7) acting in the manner of two jaws of a elastic clamp gripping the cable tray wire and the console support wall against each other. 9. Application of the device, as presented in claim 6 or 7, to the fixing of a rolled edge of sheet metal on the support surface of a console profile, this rolled edge (20) being pressed, by elastic deformation of the fastener (1), against said support surface, the hook-shaped section (4) and the first segment of wire (7) acting in the manner of two jaws of an elastic clamp pliers coming to grip one against the other the rolled edge, of substantially cylindrical section, and the support wall of the console.