FR2683619A1 - VERY LOW VOLTAGE LIGHTING DEVICE WITH SUPPORT RAIL. - Google Patents

Abstract

The rail (4) comprises a rigid profiled rod (5) and, on either side thereof, two electric power cables (8), linked together at both ends by connecting members (6, 7 ) which also ensure the fixing of the support on parallel support rods (11). An orientable lamp (1) can be mounted in an adjustable position along the rail by means of a connection member (3) comprising blades for contact with the cables (8).

Description

I Very low voltage lighting device with support rail

  The invention relates to a very low voltage lighting device comprising an elongated support along which two exposed electrical supply conductors extend, and at least one lamp provided with a connection member making it possible to fix it in an adjustable position along the support, and two own connection members to come into contact with the two conductors respectively. The object of the invention is to allow the integration of such a device in a system with load-bearing rods or with load-bearing cables

  also used to display objects or information.

  To this end, in the device according to the invention, the support comprises a profile on which the connection member can be fixed, and two connecting members ensuring the connection between the profile and the conductors at the two ends of the support respectively, l at least one of the connecting members being further able to fix the support on a carrier element

  elongated in the form of a rigid rod or tensioned cable.

  Advantageous optional features of the invention are set out below - The two connecting members are suitable for fixing the support

  respectively on two parallel elongated support elements.

  The profile extends along a longitudinal axis of the support, the

  two conductors extending parallel to this axis and symmetri-

  only from each other in relation to this one.

  The profile is a cylindrical rod of revolution.

  The connecting member and / or each connecting member are traversed in the longitudinal direction of the support by three openings for the passage of the profile and the conductors

respectively.

  The connecting member and / or each connecting member comprise two half-shells pinching between them the

  profile and conductors, through openings longitu-

  dinales being defined at least in part by notches in the half-shells. The connection members and the lamp are integral with one

  half-shells of the connecting member.

  The conductors are cables, at least one of the

  link comprising tensioning means for these cables.

  Other characteristics and advantages of the invention appear

  will review the detailed description below, and

  attached drawings, in which: FIG. 1 is a perspective view of an exemplary embodiment of a device according to the invention; Figures 2 and 3 are exploded perspective views showing two parts of the device of Figure 1; Figure 4 is a top view of an end region of the rail of the device; and Figure 5 is an axial half-section view of a part

constitutive of the rail.

  The illustrated device comprises a lamp or spot 1 suspended by a vertical rod 2 from a connection member 3 fixed on an elongated support or rail 4 The support 4 comprises a rigid horizontal profiled rod 5 in the form of a cylinder of revolution extending between two connecting members 6 and 7 respectively disposed at the two ends of the support Two flexible conductive cables 8 are stretched between the members 6 and 7 so as to extend parallel to the axis of revolution 9 of the

  profiled rod 5, in the horizontal plane of this axis and symmetri-

  only from each other with respect to the latter On each of the connecting members 6 and 7 protrudes, opposite the other connecting member, a hooking element 10, the two elements

  being clamped respectively on two vertical support rods

  the 11 which in the example illustrated are suspended from the ceiling, not shown in a room, by anchoring elements 12. FIG. 3 illustrates in more detail the connecting member 7 and the corresponding end regions of the rod 5 and cables 8 The connecting member comprises two molded plastic half-shells 13 and 14 which are identical except that the upper half-shell 13 has two non-threaded through holes 15 for the passage of two screws 16, having housings for the heads of these screws, while the lower half-shell 14 has two threaded blind holes 17 into which the screws 16 are screwed to ensure the mutual assembly of the two half-shells, which come to bear one on the other in the horizontal plane containing the two cables 8 From this plane are formed in each half-shell a central notch 18 and two lateral notches 19, the two notches 18 defining a transverse opening te in the direction of the axis 9 for the passage and immobilization of the rod 5, and the notches 19 defining two by two of the through openings extending in the direction of the axis 9 for the passage and the immobilization cables 8 Each half-shell has, respectively in the vicinity of its two ends in the lateral direction of the support, a cylindrical stud 20 protruding beyond the junction plane and a blind hole 21 formed from this same plane, each nipple 20 cooperating with the hole 21 of the other half-shell to ensure the mutual centering of these two parts and thus facilitate their assembly The shell formed by the assembly of the two half-shells has a generally cylindrical shape of substantially elliptical section

  whose generator is parallel to axis 9.

  The through opening defined by the notches 18, which has a shape of revolution around the axis 9, is formed by several cylindrical regions One of these regions, referenced 22, extends over most of the length of the opening and opens towards the middle region of the support Its diameter corresponds to that of the rod 5 A second region 23, of larger diameter than the region 22, extends over a short length between the latter and a third region 24 also having a diameter smaller than that of region 23 The diameter of the opening increases again in a last region 25 which opens towards the outside of the support Regions 22, 23 and 25 respectively receive the end region of the rod 5, one

  lock washer 26 and a part 27 which is shown separately

  ment to FIG. 5 This part comprises a cylindrical body 28 which is partially housed in the region 25 of the opening and which projects beyond it, and two cylindrical bosses 29 and 30 of smaller diameter projecting from both sides. other of the body 28 in the direction of the axis 9, respectively inward and outward of the support 4, the boss 30 being threaded A notch 31 with a semi-cylindrical bottom is formed in a diametral plane from the free end of the boss 30 and extends to the body 28, and a hole axially passing through the part has a part of smaller diameter 32 opening through the boss 29 and a part of larger diameter 33 opening through the boss 30 , these two parts being connected by a radial shoulder 34 located between the boss 29 and the bottom of the notch 31 A screw 35 can engage in the hole 32, 33, its head resting on the shoulder 34, and in the central hole of the washer 26, and screw into an axial threaded hole 36 opening at the end of the rod 5 A cap nut 37 provided with two holes 38 allowing its operation by means of a special key can be screwed onto the boss 30 The parts 27 and 37 constitute the attachment element 10, the operation of which

will be described later.

  Each of the openings defined by the notches 19 also has

  a form of revolution, and is formed of two cylindrical regions

  ques, a region 40 of smaller diameter opening towards the inside of the support 4 and a region 41 of larger diameter opening towards the outside and extending over most of the length of the opening The diameter of the region 40 is sufficient to allow the passage of the cable 8, and that of the

  region 41 to accommodate a stop sleeve 42, in which the end

  Mity of the cable is immobilized by grub screws 43 screwing into the wall of the sleeve, and a tension helical spring 44 which surrounds the cable between the sleeve 42 and the shoulder connecting the regions 40 and 41 of the opening. The connecting member 6 is identical to the connecting member 7, under

  reserve of springs 44 which can be deleted there.

  The connecting member 3, illustrated in detail in FIG. 2, also comprises two half-shells 50 and 51, the general shape and the external dimensions of which are substantially the same as those of the half-shells 13 and 14 and which come to bear on the 'one on the other in the plane containing the two cables 8, these two half-shells having from this plane notches 52, 53 defining through openings for the passage of the rod 5 and the cable 8 Centering means similar to those of the half-shells 13 and 14 are provided on the half-shells 50 and 51 On the other hand, their mutual assembly is ensured by springs 54 which are housed in

  recesses 55, adjacent to the junction plane, provided outside-

  ment in the two half-shells, so as to allow easy assembly and disassembly The upper end of the rod 2 for hanging the lamp enters a threaded ring

  internally 56 o it is immobilized by a radial screw.

  The ring 56 is itself screwed onto a bush 57 having an externally threaded lower part and the enlarged upper part of which is retained inside the lower half-shell 51 which is hollow The assembly formed by the ring 56 and the socket 57 is mounted on the half-shell 51 by known means allowing pivoting around the axis of the rod 2 at an angle close to 3600 for the orientation of the lamp 1 The latter is supplied with electricity by two sheathed cables 58 which pass axially through the hollow rod 2, the ring 56 and the sleeve 57 and are connected by lugs 59 which they present at their ends to connection members 60 cut from sheet metal Each connection member 60 has a portion in the form of a strip 61 which extends in the longitudinal direction of the support 4 and is fixed elastically in the lower half-shell 51 by known means not shown in particular so as to rest on a bearing surface 62 of this half-shell and to project elastically into one of the through openings defined by the notches 53 for the

cable routing 8.

  The mounting of the support 4 is carried out as follows.

  The cables 8 being cut to the desired length, the springs 44 are threaded therein and one end of each of them is fixed in a sleeve 42 by means of the screws 43 The sleeves 42 and the

  springs 44 in the regions 41 of the notches 19 of the half

  lower shell 14, the cables passing through the regions 40, and the end of the rod 5 and the washer 26 respectively into the regions 22 and 23 of the notch 18 The upper half-shell 13 is then positioned on the half-shell lower 14 using the pins 20 and the holes 21, and these two parts are assembled by means of the screws 16 The part 27 is then engaged in the region 25 of the median through opening of the connecting member and the screw 35 through the part 27 and the washer 26 to screw it into the hole 36 of the rod 5 This screwing brings the end of the rod into abutment on the washer 26 and immobilizes the rod 5 and the part 27 relative to the two half -shells The same operations are then carried out at the other end of the support 4, a traction being exerted on the cables 8, by compressing the springs 44, to come and accommodate the sleeves 42 in

  the regions 41 of the notches at the second end.

  The support 4 is attached to the support rods 11 by inserting the latter into the notches 31 of the parts 27 and by screwing the nuts 37 on the bosses 30 to tighten each rod 11 between the nut and the bottom of the notch 31 Previously, the orientation of each connecting element 6, 7 with respect to the corresponding notch 31 can be adjusted by slightly loosening the screw 35 to allow the part 28 to pivot,

  the screw then being tightened in the desired position.

  In normal use, all the components described in relation to FIG. 2 remain integral with each other, with the exception of the upper half-shell 50 and the two assembly springs 54 To put the lamp on the support, the remove or move it along it, just disassemble these last three components When placing on the support, we bring the two half-shells on either side of it so that the rod 5 and the cables 8 are housed in the notches 52 and 53 The contact blades 61 are then elastically deformed by the cables and ensure good electrical contact with them The diameters of the notches 52 and 53 correspond to those of the rod and cables so as to ensure a slight tightening thereof and a

  stable position of the lamp on the support.

  The power cables 8 can be connected to a very low voltage source not shown by sheathed wires 70 (FIG.

  1) which can each engage in a sleeve 42, from the outside

  free mite thereof projecting from the connecting member 6 or 7 as shown in Figure 4, and be fixed and electrically connected by that of the screws 43 closest to this end, the other screws 43 being used for tightening and electrical connection of the cable 8 The two wires 70 can be connected to the cables at the same end of the support,

  as shown in Figure 1, or at its two ends respectively-

  They can then pass inside the support rod (s) 11, which are then hollow, or be fixed on the outside and along these to be connected to the ceiling to a

power circuit.

  The supporting rods 11, instead of being suspended from the ceiling as shown, can rise from the ground, or extend

  from floor to ceiling They can also be placed horizontally-

  mentally or obliquely If necessary, the position of the support 4 along the support rods can be adjusted by loosening and tightening the nuts 37 One of the rods 11 can be removed, the support 4 being mounted in cantilever on a single rod Two supports 4 or more can also be mounted on the same support rod in identical or different longitudinal directions, two supports being able in particular

  be arranged substantially in line with one another.

  Finally the two carrying rods 11 can be replaced by carrying cables stretched vertically, provided that the center of gravity of the device is placed in the plane containing these cables so that they do not undergo bending stresses The cables 8 can as for them to be replaced by rigid profiled conductors, in particular in the case of a support

  or rail several meters in length.

Claims (7)

Claims   1 Very low voltage lighting device comprising an elongated support (4) along which two exposed electrical supply conductors (8) extend, and at least one lamp (1) provided with a connection member (3 ) allowing it to be fixed in an adjustable position along the support, and of two   connection (60) suitable for coming into contact with the two conduc-   teurs respectively, characterized in that the support comprises a profile (5) on which can be fixed the connection member, and two connecting members (6,7) ensuring the connection between the profile and the conductors at the two ends of the support respectively, at least one of the connecting members being further able to fix the support on an elongated support element   (11) in the form of rigid rod or tensioned cable.   2 Device according to claim 1, characterized in that the two connecting members (6,7) are adapted to fix the support respectively on two parallel elongated support elements (11).   3 Device according to one of claims 1 and 2, character-   risé in that the profile extends along a longitudinal axis (9) of the support, the two conductors extending parallel to this   axis and symmetrically to each other with respect to it.   4 Device according to one of the preceding claims,   characterized in that the profile is a cylindrical rod of revolution.   Device according to one of the preceding claims,   characterized in that the connecting member and / or each connecting member are traversed in the longitudinal direction of the support by three openings for the passage of the profile and conductors respectively.   6 Device according to claim 5, characterized in that   the connecting member and / or each connecting member comprises   two half-shells (13,14; 50,51) are pinched between them the profile and the conductors, the longitudinal through openings being defined at least in part by notches   (18,19; 52, 53) arranged in the half-shells.   7 Device according to claim 6, characterized in that the connection members and the lamp are integral with one (51)   half-shells of the connecting member.   8 Device according to one of the preceding claims,   characterized in that the conductors are cables, at least one of the connecting members comprising tensioning means (44) for these cables.