Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/30—Installations of cables or lines on walls, floors or ceilings
  • H02G3/32—Installations of cables or lines on walls, floors or ceilings using mounting clamps
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
  • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
  • B60R16/0207—Wire harnesses
  • B60R16/0215—Protecting, fastening and routing means therefor

Definitions

• the present invention belongs to the field of supports used to attach bundles of electrical cables to structures. More particularly, the invention relates to a support model which makes it possible to reduce the length over which the bundles of electrical cables are not held between two adjacent supports and finds application in particular in vehicles for which the vibrations and the proximity of other structures or equipment could cause damage to the cables.
• electrical cable bundles are generally held by holding elements or supports 10, for example collars such as that illustrated in FIG. 1a, themselves fixed on structural elements, for example in an airplane, on fuselage frames or floor sleepers.
• elements or supports 10 for example collars such as that illustrated in FIG. 1a
• the structures on which these supports can be fixed are limited and spaced apart by a distance that can be significant given the low rigidity of the cables.
• This spacing between two structures, and therefore between two supports causes a deformation, or arrow, bundles of electric cables under the effect of their own weight.
• the spacing L between two structures, and therefore between two supports 10 is 450 mm
• the current distance between two frames of an aircraft fuselage, the arrow d of the cable harness is approximately 13 mm, as illustrated. in Figure 1b.
• the deformation involves an extension of the total length of the bundles of electric cables, which is disadvantageous for the control of the installation.
• the arrow may lead to contacts between the beams and said surrounding structures.
• Such contacts in particular in vibratory environment, can lead to wear of the insulators of the electric cables, and cause disturbances in the operation of the electrical circuits such as signal losses or short circuits.
• the paths of the bundles of cables are designed to maintain sufficient distances between the bundles of cables and said structures taking into account the possible deflection of said bundles.
• ramps rigid supports which follow the desired trajectory and which are fixed to the structure at several points.
• Such ramps are heavier than individual supports, more fragile and more difficult to install, and much more expensive to achieve especially as they must be adapted to each case of installation.
• the present invention proposes a support for fixing a bundle of electrical cables which provides better support of the beams than the existing supports and which reduces the deflection of the beams between two media attachment points without changing the number of supports required and without generating a penalty mass or significant cost.
• a support for the maintenance of a cable bundle able to be fixed on a structure to maintain in position and in orientation said bundle of electric cables with respect to said structure comprises first positioning and holding means of the beam near means of connection of the support with the structure and comprises at least a second means for positioning and maintaining the beam having the shape of a ramp extending on either side of the first means, substantially in the direction in which the direction in which the beam is to be maintained, said at least one ramp being integral with said first means at one end and free at the other end.
• the second means comprises at least two ramps, at least one of which is integral with said first means on one side and at least one other is secured to said first means on another side.
• the two ramps may be substantially aligned or at an angle to each other.
• the ramps are substantially of the same length which limits the risk of tearing at the fasteners of the support on the structure.
• the at least one ramp has an upper surface on which is placed the substantially plane or cylindrical beam whose generatrices rest substantially on a surface first means, on which said beam is held in position and orientation in said first means.
• the first positioning and holding means form a substantially closed surface such as a collar whose opening section is advantageously adapted to the section of the beam.
• the first positioning and holding means form a concave open surface, for example a V-shaped surface, said surface being closed by an attachment means, such as a hoop, keeping the bundle in said surface and whose tightening makes it possible to adapt to different sections of the beam.
• at least one ramp has on one face lower a reinforcement capable of increasing the rigidity of said at least one ramp. The section and the thickness of the assembly ramps and reinforcements are adapted to resist the weight of the beam.
• the reinforcement comprises means for positioning beam attachment means around at least one ramp and preventing slipping of said attachment means along the at least one ramp.
• the means may be for example a hole or a notch in the reinforcement.
• the support is made in one piece, for example by injection into a mold.
• the elements, first and at least one second positioning and holding means are made separately and then assembled, which makes it possible to produce modular supports by separately selecting the first means as a function of the diameter of the beam and the ramps according to the distance between two adjacent supports.
• FIG 1a a schematic perspective view of a support according to the prior art for fixing a bundle of electrical cables on structures
• Figure 1b a diagram of installation of a bundle of electrical cables between two supports according to the art previous and the resulting arrow
• FIG. 2 a schematic perspective view of a support according to the invention
• FIG. 3 a profile view of a support according to the invention
• Figure 5a, 5b, 5c, 5d different views of a support according to the invention illustrating examples of arrangement of ramps on the support
• Figure 6 a diagram of the installation of a cable harness between two supports according to the invention.
• a support 1 for fixing a bundle of electrical cables to structures according to the invention as illustrated in FIGS. 2, 3 and 4, which have different views of one and the same embodiment of a support and on which the cable bundle electrical equipment is not represented, consists of:
• a collar 2 capable of receiving the bundle of electric cables
• the beam is placed in the collar 2, on an inner surface 25, along an axis 24 of said collar.
• Said collar, of length I is open on the opposite side to the base 3 and the opening 21, of width e, has two ends 22 each with a rim having openings 23.
• Said openings 23 are used for the passage of a hoop or other fastening means which makes it possible to tighten the collar 2 by bringing the flanges closer to the opening 21 and to keep the bundle in the collar 2.
• the choice of collar depends both on the diameter of the bundle and on the of his weight.
• the width e of the opening 21 of the collar 2 is adapted as a function of the diameter of the bundle and the length I of the collar 2 is adapted as a function of the weight of the bundle.
• Other shapes or means equivalent to the collar 2 as shown, for example V-shaped collars, can also be used.
• the base 3 comprises a lower surface 31, advantageously flat, intended to be placed against the structure (not shown) on which the support is fixed and to ensure stability. Said base is fixed to the structure by any conventional means, in particular by bonding the lower surface, screwing or clipping.
• the two lateral ramps 4a, 4b are arranged on either side of the collar 2. Each ramp is fixed to the collar at one end and free at the other end. Said lateral ramps are of elongate shape. Each ramp has an upper surface 41a, 41b, located on the side of the collar. Said surfaces are substantially flat or cylindrical corresponding to extensions of all or part of the inner surface 25 of the collar 2 located on the side of the base 3. In the embodiment shown in Figures 2, 3 and 4, the ramps 4a, 4b are substantially aligned, with axes 43a, 43b substantially in the axis 24 of the collar. Thus a bundle of electrical cables which is placed in the collar is naturally in the axes of said ramps, on the side of the upper surface 41a, 41b of each ramp. In an alternative embodiment, as shown in the figures
• the ramps 4a, 4b are not aligned but form an angle between them in any plane.
• the ramps 4a, 4b form an angle ⁇ in the plane formed by said two ramps.
• the ramps 4a, 4b form an angle ⁇ in the plane formed by said two ramps.
• the collar 1 comprises three ramps 4a, 4b, 4c, with, for example, a Y shape with a ramp 4a on one side of the collar and two ramps 4b. , 4c on the other side of the necklace.
• the support 1 consists of a single lateral ramp 4a.
• This particular asymmetrical shape is mainly adapted to supports 1 positioned at the ends of the cables.
• the present invention is not limited to the examples of ramps described above by way of non-limiting examples. Those skilled in the art are able to adapt the invention to a number of ramps on the support and angles between said undescribed ramps.
• said ramps have a width substantially constant, in order to present a sufficient surface on which the beam rests.
• each ramp 4a, 4b is adapted according to the spacing between two structures. In an exemplary embodiment, it represents approximately one third of the average distance between two supports so that each free end of the ramp determines an intermediate point substantially halfway between the point of attachment of the support and the free end of the ramp of the nearby support.
• said ramps have a symmetry with respect to the collar 2 so as to balance the weight of the beam on either side of said collar.
• the ramps on a lower face 42a, 42b, comprise reinforcements 5a, 5b, having the form of stiffeners, secured to the base 3. Said reinforcements make it possible to obtain a satisfactory rigidity of the ramps which support the weight of the beam without it being necessary to increase the thickness of the ramps excessively.
• Each reinforcement 5a, 5b extends over all or part of the length of its associated ramp 4a, 4b.
• the ramp assembly 4a, 4b and reinforcements 5a, 5b in fact behaves as a beam, embedded at one end, subjected to bending forces.
• the thickness and the section of the assembly ramps and reinforcements are determined so that the set ramps and reinforcements is resistant to the weight of the beam subjected to various accelerations of the structure to which the support is attached.
• the reinforcement in order to withstand relatively small bending forces, has a trapezoidal shape, with a greater height at its root at the base than at the free end of the ramp. This example makes it possible to minimize the mass of the support.
• the reinforcement in order to withstand greater bending forces in the case of a heavier beam, has a hollow parallelepipedal shape or any other section of inertia adapted.
• the present invention is not limited to the examples described above.
• the person skilled in the art is able to adapt the shape and the section of the set of ramps and reinforcements to undescribed shapes and sections, in particular according to the weight of the beam to which the set of ramps and reinforcements must withstand. material used for the realization of ramps and reinforcements.
• the reinforcements 5a, 5b comprise means 61a, 61b, 62a, 62b for example a recess 61a, 61b, or a notch, 62a, 62b for positioning said attachment means.
• the number of means is adjusted, if necessary, according to the length of the ramps.
• the supports 1 are made in one piece, comprising the collar 2, the base 3, the ramps 4a, 4b and the reinforcements 5a, 5b.
• said supports are made of a plastic material, for example nylon, preferably by injection.
• Another mode is to separately realize the ramps 4a, 4b with the reinforcements 5a, 5b, then to assemble the two ramp elements and reinforcements on either side of the base 3.
• This mode is suitable for the realization of modular supports in which the diameter of the collar, the resistance and or the length of the ramps are chosen according to the application to be made.
• the spacing l_2 where the bundle of electric cables is subjected to its own weight , ie between the free ends of each ramp, is reduced to 210mm, as shown in Figure 5.
• the arrow becomes negligible.
• the invention therefore makes it possible to obtain a support 1 for fixing a beam electrical cables that allows a better maintenance of the beam and reduces the deflection of the beam between two supports, without the need to change the number of supports.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Mechanical Engineering (AREA)
• Installation Of Indoor Wiring (AREA)
• Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
• Clamps And Clips (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (9)

Families Citing this family (10)

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• 2006
  • 2006-08-17 FR FR0653393A patent/FR2905039B1/fr not_active Expired - Fee Related
• 2007
  • 2007-08-17 WO PCT/FR2007/051821 patent/WO2008020147A2/fr not_active Ceased
  • 2007-08-17 CA CA002660492A patent/CA2660492A1/fr active Pending
  • 2007-08-17 JP JP2009524220A patent/JP2010501157A/ja not_active Ceased
  • 2007-08-17 RU RU2009109416/07A patent/RU2452069C2/ru not_active IP Right Cessation
  • 2007-08-17 EP EP07823722A patent/EP2052449A2/de not_active Withdrawn
  • 2007-08-17 US US12/376,639 patent/US20100238642A1/en not_active Abandoned
  • 2007-08-17 BR BRPI0715787-8A patent/BRPI0715787A2/pt not_active IP Right Cessation
  • 2007-08-17 CN CN2007800366618A patent/CN101523677B/zh not_active Expired - Fee Related

Non-Patent Citations (1)

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