FR3060101A1 - DEVICE FOR CONNECTING LUMINAIRE - Google Patents

Abstract

The invention relates to a luminaire connection device (1000) comprising: - a box body (100) to be recessed which delimits an interior space (110) closed at the rear and open at the front, and - an axial element (150) which extends into the interior space between the rear and the front of the can body, and which comprises means for receiving and fixing, by the front of the can body, a longitudinal member (12). According to the invention, said receiving and fixing means are arranged to receive a portion (5B) of a free end portion (5A) of a holding cable (5) which enters said interior space via a first passage (350) provided at the rear of said connecting device, so that said longitudinal member is adapted to act on said portion of said free end portion of the holding cable to block the position of said box body on said cable of maintenance.

Description

Holder (s): LEGRAND FRANCE Public limited company, LEGRAND SNC General partnership.

Extension request (s)

Agent (s): JACOBACCI CORALIS HARLE Simplified joint-stock company.

FR 3 060 101 - A1 (54) LUMINAIRE CONNECTION DEVICE.

The invention relates to a luminaire connection device (1000) comprising:

- a box body (100) to be embedded which delimits an interior space (110) closed at the rear and open at the front, and

- An axial element (150) which extends in the interior space between the rear and the front of the box body, and which comprises means for receiving and fixing, from the front of the box body, d 'a longitudinal element (12).

According to the invention, said receiving and fixing means are arranged to receive a portion (5B) of a free end part (5A) of a retaining cable (5) which enters said interior space via a first passage (350) provided at the rear of said connection device, so that said longitudinal element is adapted to act on said portion of said free end portion of the retaining cable to block the position of said box body on said cable maintenance.

Technical field to which the invention relates

The present invention relates generally to the field of luminaire connection to a ceiling wall.

It relates in particular to a luminaire connection device comprising:

- a body of a built-in box which delimits an interior space closed at the rear and open at the front, and

an axial element which extends in the interior space between the rear and the front of the box body, and which comprises means for receiving and fixing, by the front of the box body, of an element longitudinal.

Technological background

The luminaire connection devices known to date, commonly called DCL, comprise a housing receiving electrical wires for the electrical supply of a luminaire and a hook attached to the housing for hanging a luminaire.

The housing is adapted, on the one hand, to be embedded in a ceiling wall, and, on the other hand, to be secured to the ceiling by means of a retaining cable.

The retaining cable forms a load take-up link between the housing and a fixed frame element such as a beam to which the cable is connected.

In general, the retaining cable is fixed to the rear of the housing before it is embedded in the ceiling wall.

Thus, once the housing is embedded in the ceiling wall, the retaining cable is no longer accessible to the user except by dismantling the housing from the ceiling wall, or passing through the attic to access the rear. of the housing, so that it is difficult to adjust the position of the housing relative to the retaining cable.

Documents FR2965419 and FR2932248 are known, two luminaire connection devices each comprising a cable release system accessible to the user from the front of the housing.

In the device according to document FR2965419, the cable release system comprises an operating member adapted to act on an elastic return spring, a first position of which corresponds to the cable blocking and a second position of which corresponds to the cable release, said member operation being accessible to the user from the front of the housing.

In this device, the cable release system requires many parts arranged in relation to each other, which makes the connection device and its manufacture complex.

In the device according to document FR2932248, the cable release system is arranged at the rear of the housing. It can be operated by the user from the front of the housing using a specific tool that can be inserted into an opening in the housing provided for this purpose.

In this device, the cable release system requires the use of a specific tool which can be lost by the user, and requires working blind at the back of the box mounted in the ceiling wall.

Object of the invention

In order to remedy the aforementioned drawbacks of the prior art, the present invention provides a simple to manufacture luminaire connection device, allowing access to the retaining cable from the front of said connection device, without having to dismantle said connection device. ceiling wall connection device, and without using specific tools.

More particularly, according to the invention, there is proposed a luminaire connection device as described in the introduction, in which said receiving and fixing means are arranged to receive a portion of a free end portion of a retaining cable. which enters said interior space via a first passage provided at the rear of said connection device, so that said longitudinal element is adapted to act on said portion of said free end portion of the retaining cable to block the position of said body box on said retaining cable.

Thus, thanks to the invention, the box body is held in position on said retaining cable thanks to said longitudinal element fixed in said means for receiving and fixing the axial element.

The longitudinal element is accessible to the user from the front of the connection device and its disassembly makes it possible to unlock the box body relative to the retaining cable.

SI is therefore easy for a user to modify the position of the box body on said retaining cable, by acting directly on the longitudinal element.

Advantageously, existing means of the connection device are used for blocking the retaining cable, which can be used for hanging the luminaire.

Other non-limiting and advantageous characteristics of the connection device according to the invention are as follows:

- Said receiving and fixing means comprise a sheath having an axial housing, a mouth of which opens at the front of said box body to receive said longitudinal element, said sheath being further arranged to receive said portion of said free end part retaining cable in said axial housing;

- Said sheath is arranged to receive said portion of the free end portion of the retaining cable in a direction parallel to the axis of said axial housing;

- Said sheath has an internal face delimiting said axial housing, and there is provided in the hollow of said internal face at least one axial groove extending at least over part of the length of said axial housing;

- There is provided at the front mouth of said axial housing at least one retaining notch for said retaining cable;

- It is provided near the front mouth of said axial housing, at least one clamp for retaining the retaining cable;

- Said sheath has two through openings facing each other so that it is arranged to receive said portion of the free end portion of the retaining cable in a direction transverse to the axis said axial housing;

- There is a retaining element attached to said sheath to clamp another portion of said free end portion of the retaining cable extending outside of said axial housing;

- The axial element is added through an opening provided in a bottom wall of said box body;

- Said first passage belongs to a mounting part of the body of the axial element on the box body;

- Said first passage is closed by a flexible, pierceable waterproofing membrane;

- The axial element is integrated into the base of an electrical connection module attached to said interior space from the front of said box body;

- Said first passage belongs to a bottom wall of said box body;

- a second passage is provided at the rear of said connection device for the exit of said free end portion of the retaining cable from the interior space towards the exterior of said box body, said second passage belonging to a wall bottom of said box body;

-a second passage is provided at the rear of said connection device for the exit of said free end part of the retaining cable from the interior space towards the outside of said box body, said second passage belonging to a part mounting the body of the axial element on the box body;

- The axial housing of the sleeve is adapted to receive the threads of a thread of the longitudinal element;

- There is provided in said axial housing of the sleeve a quarter-turn fixing ramp of a quarter-turn fixing element of the longitudinal element;

- The longitudinal element constitutes a longitudinal part of the body of a hook provided for the attachment of a luminaire; and

- The body of said hook comprises a curved part articulated pivotally on said longitudinal part.

Detailed description of an exemplary embodiment

The description which follows with reference to the appended drawings, given by way of nonlimiting examples, will make it clear what the invention consists of and how it can be carried out.

In the accompanying drawings:

- Figure 1 is a schematic view in partially exploded axial section of a first embodiment of a luminaire connection device according to the invention, embedded in a ceiling wall, receiving a retaining cable, in which the longitudinal element has not been shown;

- Figure 2 is a schematic view in assembled axial section of the device of Figure 1, embedded in the ceiling wall and receiving the retaining cable;

- Figure 3 is a schematic perspective view of three quarters partially exploded of the luminaire connection device of Figure 1 shown from a different angle;

- Figure 4 is a perspective view of the axial element of the luminaire connection device of Figure 1;

- Figure 5 is a cutaway perspective view of the axial element of Figure 4;

- Figure 6 is a partially exploded axial sectional view of an alternative embodiment of the device of Figure 1 in which the cover and the longitudinal element have not been shown;

- Figure 7 is a perspective view from above of the retaining element of the luminaire connection device of Figure 6;

- Figure 8 is an axial sectional view of the luminaire connection device of Figure 6 embedded in a ceiling wall and receiving a retaining cable;

- Figure 9 is a magnifying glass view of area B of Figure 8;

- Figure 10 is a perspective view of the axial element of the luminaire connection device of Figure 6;

- Figure 11 is a rear view of the axial element of Figure 10;

- Figure 12 is a sectional view along the plane E-E of the axial element of Figure 11;

- Figure 13 is a partially exploded axial sectional view of another embodiment of a luminaire connection device according to the invention, embedded in a ceiling wall, receiving a retaining cable, in which the cover and the longitudinal element has not been shown;

- Figure 14 is an assembled axial sectional view of the luminaire connection device of Figure 13 embedded in a ceiling wall and receiving the retaining cable, in which the cover has not been shown;

- Figure 15 is a detailed magnifying glass view of the axial element of the luminaire connection device of Figure 14;

- Figure 16 is a front view of the axial element of the connection device of Figure 14;

- Figure 17 is a front perspective view of an alternative embodiment of the device of Figure 13, receiving a retaining cable, in which the cover and the longitudinal element have not been shown;

- Figure 18 is a perspective view of the longitudinal element of the luminaire connection device of Figure 17;

- Figure 19 is a partial rear view of the luminaire connection device of Figure 17, in which the longitudinal element is in the locked position;

- Figure 20 is an overall view of the luminaire connection device of Figure 13 mounted in the ceiling wall and receiving the retaining cable forming a loop around a frame beam; and

- Figure 21 is a perspective view of a longitudinal element of a luminaire connection device according to the invention.

By convention, in the following description, the terms “front” and “rear” will be defined with respect to the gaze of a user turned towards the luminaire connection device embedded in a ceiling wall. Thus the term "front" will designate the side of the luminaire connection device facing the user and the term "rear" that facing away from the user.

Figures 1 to 20 show several embodiments of a luminaire connection device 1000; 2000 according to the invention. Such a device is commonly called DCL and we will call it in the following text for convenience.

As shown more particularly in Figures 2 and 14, the DCL 1000; 2000 according to the invention usually comprises a box body 100; 200 to be embedded in a cavity 2 provided in a ceiling wall 1, and a cover 130; 230 to be attached to the front of the box body 100; 200 so as to form a housing used for hanging and supplying power to a luminaire.

The box body 100; 200 and the cover 130; 230 are made of rigid plastic material (typically polypropylene). They may include portions of more flexible plastic material (typically SEBS, English acronym of polystyrene-b-poly (ethylene-butylene) -b-polystyrene).

In the position of use, as detailed in FIG. 20, the DCL 2000 according to the invention embedded in the ceiling wall 1, is retained by a retaining cable 5 which forms a loop around a beam 6 of the frame hidden behind the ceiling wall 1. This retaining cable 5 is a load recovery link which secures the DCL 2000 in the ceiling wall 1.

Conventionally, as shown in Figures 2 and 14, the box body 100; 200 (which will be described in detail later) defines an interior space 110; 210, closed at the back and open at the front. The cover 130; 230 covers the front opening of the box body 110; 210 to close the interior space 110; 210 and perform an apparent finish on the DCL 1000; 2000 (see Figures 2 and 20).

Interior space 110; 210 generally accommodates the connection elements used for the electrical supply of the luminaire (not shown). These connection elements (described in more detail later, with reference to the various embodiments of the invention) are supplied with current directly or indirectly via electrical conductors coming from the electrical supply network. These electrical conductors usually circulate in sheaths running behind the ceiling wall 1.

The DCL 1000 connection elements; 2000 are accessible inside a well 137; 237 which opens onto the front face 130B; 230B of cover 130; 230 of DCL 1000; 2000 to receive a connection plug for the luminaire not shown (see Figures 4 and 20).

Interior space 110; 210 of the box body 100; 200 of DCL 1000; 2000 also encloses an axial element 150; 160; 250; 260, generally made of rigid plastic material, which extends between the rear and the front of the box body 100; 200 and which is used for mounting a longitudinal element 12; 22 reported from the front of the DCL 1000; 2000 through the cover 130; 230 (see Figures 2, 8, 14 and 17).

The longitudinal element 12; 22 here forms the longitudinal part of a hook 10; 20 for fixing a luminaire but it could be the threaded body of a screw or any other locking element of the cover 130; 230.

The axial element 150; 160; 250; 260 then comprises means for receiving and fixing the longitudinal element 12; 22.

According to a particularly remarkable characteristic of the DCL 1000; 2000 according to the invention, said receiving and fixing means provided on the axial element 150; 160; 250; 260 are arranged to receive a portion 5B of a free end portion 5A of the retaining cable 5 which enters said interior space 110; 210 via a first pass 350; 360; 450 provided on the back of the DCL 1000; 2000, so that said longitudinal member 12; 22 is adapted to act on said portion 5B of said free end portion 5A of the retaining cable 5 to block the position of said box body 100; 200 on said retaining cable 5.

More specifically, the DCL 1000, shown in FIGS. 1 to 12, comprises a completely conventional box body 100 which has a generally cylindrical shape.

As shown in Figures 1, 2, 3, 6 and 8, this box body 100 includes a tubular side wall 101 of revolution about a central axis AZ.

This side wall 101 is closed at the rear by a bottom wall 102 and open at the front. It thus delimits the interior space 110.

The side wall 101 of the box body 100 is also bordered at the front by a sidewalk 103 adapted to bear against the front face of the ceiling wall 1 when the box body 100 is inserted into the cavity 2 (see figure 2).

For fixing the box body 100 to the ceiling wall 1, the side wall 101 has on its external face two recesses 122 which are diametrically opposed and which receive claws 121 for fixing in abutment against a ramp 125 provided at the bottom of the reinforcements 122 (see figure 2). Each claw 121 for fixing is maneuverable along the ramp 125 by a user using a screw 123 inserted in a screwing well 124 (see FIGS. 1 and 2).

More specifically, each claw 121 is operable between a position in which said claw 121 is retracted into said recess 122, set back from the external face of the side wall 101 of the box body 100 in order to allow the insertion of the latter into the cavity 2, and a fixing position in which said claw 121 protrudes from the external face of the side wall 101 of the box body 100 inserted in said cavity 2, bearing against the rear face of the ceiling wall 1.

When the fixing claws 121 adopt their fixing position, the ceiling wall 1 is sandwiched between the claws 121 and the sidewalk 103 of the box body 100 so that the latter is fixed in this ceiling wall 1.

As shown in Figures 1, 2, 3, 6 and 8, the box body 100 conventionally has openings 107 which extend on the side wall

101 and the bottom wall 102. These openings 107 are closed by detachable or tear-off lids 108. Each cover 108, made of flexible plastic material, incorporates a tab 109 on which a user can pull to detach or tear said cover 108 from the rest of the box body 100 in order to open an opening 107 and insert through an electrical sheath (not shown ) in interior space 110.

As shown more particularly in FIG. 2, the interior space 110 of the box body 100 of the DCL 1000 houses a terminal block 135 comprising a plurality of connection terminals 136. This terminal block 135 belongs to a base secured to the internal face 130A of the cover 130. The connection terminals 136 are accessible to the connection elements of a plug of a luminaire (not shown) at the bottom of the well 137 provided in said base and opening onto the front face 130B of the cover 130 (see FIG. 3) .

The terminal block 135 is supplied with current by electrical wires extracted from an electrical sheath inserted into the interior space 110 through an opening 107 in the box body 100 of the DCL 1000.

As shown in Figures 1 and 2, the bottom wall 102 of the box body 100 has an opening 104 adapted to receive the axial element 150; 160 reported on this one.

This opening 104 is here generally centered on the central axis AZ of the box body 100.

The axial element 150; 160 attached to the box body 100 then extends along the central axis AZ of the box body 100.

As shown more precisely in FIGS. 4, 5, 10, 11 and 12, the axial element 150; 160 includes a body 170; 180 forming, at the rear, a mounting part 171; 181 of the axial element 150; 160 in the box body 100, and, in the front, a sheath 172; 182 constituting said means for receiving and fixing the longitudinal element 12; 22.

More specifically, the mounting portion 171; 181 of the axial element 150; 160 includes a flange 171A; 181A intended to bear against the external face of the bottom wall 102 of the box body 100 when the axial element 150; 160 is inserted through opening 104.

The mounting part 171; 181 also includes two grip handles 171B; 181B to facilitate the insertion of the axial element 150; 160 through opening 104.

This mounting part 171; 181 is extended at the front by the sheath 172; 182 which has a generally cylindrical shape.

The scabbard 172; 182 includes a hollow body 173; 183 internally delimiting an axial housing 175; 185, also of generally cylindrical shape, which extends along the central axis AZ of the box body 100 (see FIGS. 1 and 8).

This axial housing 175; 185 has a background 175B; 185B which separates said mounting portion 171; 181 of said sheath 172; 182, and, opposite the bottom 175B; 185B, a mouthpiece 175A; 185A which opens at the front of said box body 100 to receive the longitudinal element 12 (see FIGS. 1,4, 5, 8 and 9).

As shown in FIGS. 2, 8 and 21, the longitudinal element here forms the longitudinal part 12 of a hook 10 which comprises a curved part 11 used for hanging the luminaire (not shown).

The axial housing 175; 185 then has an internal diameter equal, apart from the clearance, to the external diameter of the longitudinal part 12 of the hook 10.

As shown in Figures 1, 2, 5, 6, 8 and 12, the internal face 173A; 183A of the hollow body 173; 183 of the sheath 172; 182 (which delimits the axial housing 175; 185) is adapted to receive the self-tapping threads 14 of a thread carried by the external face of the longitudinal part 12 of the hook 10 (shown in FIG. 21). The screwing of said self-tapping threads 14 in the axial housing 175; 185 taps said internal face 173A; 183A, so that the latter cooperates with said threads 14.

As shown in Figures 2 and 8, the axial housing 175; 185 of the axial element 150; 160 being centered on the central axis AZ of the box body 100, the longitudinal part 12 of the hook 10 fixed in the axial element 150; 160 is then itself centered on the central axis AZ of the box body 100 and the curved part 11 of the hook 10 is then placed in the center of the DCL 1000 for the attachment of the luminaire (not shown).

As shown in Figures 5 and 6, the outer face 173B; 183B of the hollow body 173; 183 of the sheath 172; 182 has notches 177; 187 intended for fixing the cover 130 to the box body 100.

In correspondence, the cover 130 carries on its rear face 130A a sleeve 131 adapted to be fitted on the sheath 172; 182 of the axial element 150; 160 (see Figure 1).

The sleeve 131 generally extends along the central axis AZ of the box body 100.

This sleeve 131 is terminated at the rear by teeth 132 engaging on said notches 177; 187 of the outer face 173B; 183B of the hollow body 173; 183 of the sheath 172; 182 when the cover 130 is attached to the front opening of the box body 100 (see FIG. 2).

The cover 130 also comprises a central opening 134 opening into said sleeve 131 and through which can be inserted by the front face 130B, the longitudinal part 12 of the hook 10, when the cover 130 is attached to the box body 100, such that the thread 14 of the thread of said longitudinal portion 12 of the hook 10 is screwed into the axial housing 175; 185 of the sheath 172; 182 (see Figures 2 and 8).

Advantageously, according to the embodiments shown in Figures 1 to 12, the first passage 350; 360 intended for the entry of the free end part 5A of the retaining cable 5 into the interior space 110 of the box body 100 belongs to the mounting part 171; 181 of body 170; 180 of the axial element 150; 160 on the box body 100 (see Figures 1 and 6).

More specifically, according to the first embodiment, as shown in Figures 1 and 2, the first passage 350 is formed by a central opening extending along the central axis AZ and passing right through the mounting part 171 to open into the axial housing 175 of the sheath 172.

As shown in Figures 1,2 and 5, the outlet of the first passage 350 is advantageously closed by a flexible waterproofing membrane 351. It is preferably carried out in SEBS.

According to this first embodiment, the sheath 172 is arranged to receive said portion 5B of said free end portion 5A of the retaining cable 5 in said axial housing 175 in a direction parallel to the axis of said axial housing 175 (see figures 1 and 2).

Thus, the free end part 5A of the retaining cable 5 forming a loop around a frame beam 6 can be inserted from the outside of the box body 100 towards the interior space 110 via the first passage 350 provided in the mounting part 171 of the body 170 of the axial element 150. The free end part 5A of the retaining cable 5 pierces the sealing membrane 351 and then runs longitudinally in the axial housing 175 of the sleeve 172 to open into the interior space 110 via the mouth 175A of the axial housing 175 (see FIG. 1).

Then, when the longitudinal part 12 of the hook 10 is inserted into the axial housing 175 of the sheath 172, it compresses the portion 5B of the retaining cable 5 against the internal face 173A of the hollow body 173 of the sheath 172 (see FIG. 2).

Advantageously, as shown in detail in FIG. 5, provision is made here, in the hollow of the internal face 173A of the hollow body 173 of the sheath 172, four axial grooves 179 which extend over the entire length of said axial housing 175 and which are distributed around the axis of said axial housing 175.

These grooves 179 have a dimension substantially equivalent, and preferably less, to the external diameter of the retaining cable 5 so that they are adapted to receive said portion 5B of the free end portion 5A of the retaining cable 5 which runs in a four grooves 179 to open at the mouth 175A of said axial housing 175.

Advantageously, the threads 14 of the threading of the longitudinal part 12 of the hook 10 screwed into said axial housing 175 compress the portion 5B of the free end part 5A of the retaining cable 5 in one of the grooves 179 without cutting into or shearing said cable holding 5, so as to block the position of the can body 100 on the holding cable 5.

Of course, according to a variant not shown, it could be provided that said grooves extend only over a part of the length of the axial housing.

In addition, a single groove could be provided on the internal face of the hollow body of the sheath.

Finally, it could be envisaged that the hollow body of the sheath is made of a deformable material so that despite the limited diameter of the axial housing, the latter can receive both the portion of the free end portion of the retaining cable and the longitudinal part of the hook so that the fixing of the longitudinal part of the hook in the axial housing of said axial element causes said retaining cable to jam in said axial housing.

As shown in FIGS. 1 and 3, the sleeve 131 of the cover 130 has at least one lateral window 133 through which the unused length of the free end part 5A of the retaining cable 5 leaves in the interior space 110 of the box body 100.

If this unused length is excessive, it is possible to cut part of this unused length.

As shown more particularly in FIG. 4, at least one retaining notch 550 of said retaining cable 5 is provided in the edge 174 delimiting the mouth 175A before said axial housing 175.

Here, as shown in FIGS. 4 and 5, each axial groove 179 is extended by a retaining notch 550.

This retaining notch 550 is adapted to pinch the retaining cable 5 for the time of fixing the hook 10 in the axial housing 175 of the sleeve 172, so that the position of the box body 100 on said retaining cable 5 is maintained on time of this fixation.

To install in the cavity 2 of the ceiling wall 1, the first embodiment of the DCL 1000, shown in Figures 1 to 5, it is first necessary to form a loop with the retaining cable 5 around the beam 6 of frame. The free end part 5A of the retaining cable 5 then extends through the cavity 2.

Then, it is necessary to pull the end of an electrical sheath (not shown), which circulates behind the ceiling wall 1 (housing the electrical wires), through the cavity 2, to introduce it into the interior space 110 of the box body 100 via an opening 7 from which the cover 8 has been removed.

The free end part 5A of the retaining cable is then inserted into the first passage 350 of the axial element 150 of the DCL, until it pierces the sealing membrane 351 to thread into the axial housing. 175 of the scabbard 172.

By pulling on said free end 5A of the retaining cable 5, a portion 5B of this free end 5A is placed in one of the grooves 179 provided on the internal face 173A of the sleeve 172. The retaining cable 5 is also introduced in one of the notches 550 provided at the mouth 175A of said sheath 172.

Then the box body 100 is fixed in the cavity 2 using the system of claws 121 and screws 123 of claws.

We can then connect the electrical wires from the electrical sheath to the connection terminals 136 of the terminal block 135 and pass the excess of retaining cable 5 coming out of the sheath 172 through a window 133 of the sleeve 131 of the cover 130 in order to direct this excess towards the interior space 110 of the box body 100. A part of the length of this excess is cut if this length is too great.

The cover 130 is clipped into the front opening of the box body 100 so that it comes to bear on the front face of the ceiling wall 1.

Then the longitudinal part 12 of the hook 10 is screwed into the axial housing 175 of the sleeve 172, via the opening 134 of the cover 130, in order to fix the hook 10 to the axial element 160 of the DCL 1000 and to tighten the portion 5B of the free end part 5A of the retaining cable 5 against the bottom of a groove 179 on the internal face 173A of the sheath 172. The position of the box body 1000 is thus blocked on the retaining cable 5.

If, later, the installer wishes to intervene on the retaining cable 5, it suffices that he simply unscrews the hook 10, that he removes the cover 130 and he has very easy access from the front of the DCL to the part of free end 5A of the retaining cable 5 housed in the interior space 110 of the box body 100.

The variant embodiment of the DCL 1000 shown in FIGS. 6 to 12 differs from that shown in FIGS. 1 to 5, in that said sheath 182 is arranged to receive said portion 5B of the free end part 5A of the cable. holding 5 in a direction transverse to the axis of said axial housing 185.

To do this, the hollow body 183 of the sheath 182 is traversed right through by two through openings 365 opposite one another.

In addition, the mounting part 181 of the body 180 of the axial element 160 has two passages 360, 361 for the free end part 5A of the retaining cable 5. The two passages 360, 361 are symmetrical with respect to the axis AZ of the axial element 160. They each comprise a straight part which is extended by a slanting part opening into the interior space 110 of the box body 100, near one of the through openings 365 (see FIG. 6) .

Thus, during assembly of the DCL 1000 shown in FIGS. 6 to 12, the free end part 5A of the retaining cable 5 is inserted via the first passage 360 in the interior space 110, outside said axial housing 185 , then borrows the transverse passage formed inside the axial housing 185 by the through openings 365 and spring from said axial housing 185 to engage in the second passage 361 and exit outside the box body 100, at the back of it (see Figure 8).

Advantageously, as shown in FIG. 8, the generally U-shaped shape adopted by the retaining cable 5 in the interior space 110 makes it possible to partially retain the box body 100 on the retaining cable 5, before the latter is compressed by the longitudinal part 12 of the hook 10.

It will be noted that the through holes 365 are located near the bottom 185B of said axial housing 185 so that it is the tip of the longitudinal part 12 of the hook, inserted in the axial housing, which will compress the portion 5B (passing through said housing axial) of the free end part 5A of the retaining cable 5, against the bottom 185B of said axial housing 185 (see FIG. 9).

According to this alternative embodiment, the first passage 360 and the second passage 361 can be interchanged for the entry and exit of the retaining cable 5 in the interior space 110 of the box body 100.

One could also consider that the second passage belongs to the bottom wall of the box body.

According to another variant not shown, one could provide a single passage for the retaining cable, the latter passing through the axial housing of said axial element and remaining housed in the box body.

Advantageously, according to this variant of the DCL 1000 shown in FIGS. 6 to 12, there is further provided a retaining element 560 adapted to be attached to said sheath 182.

This retaining element 560 is intended to clamp an external portion 5C of the U formed by the retaining cable 5 threaded into the axial housing 185 (see FIGS. 8 and 9).

As shown more particularly in Figures 6 and 7, the retaining element 560 comprises a sleeve 561 of generally cylindrical shape which carries four rear attachment wings 562.

The sleeve 561 of the retaining element 560 has an internal diameter slightly greater than the external diameter of the sheath 182 so that it is adapted to be fitted on the sheath 182 of the axial element 160.

Each fixing wing 562 has a fixing groove 562A, one of the edges of which is adapted to clip onto the flange 105A of a ring 105, engaged in the opening 104 of the bottom wall 102 of the box body 100, of so as to secure the retaining element 560 to the box body 100 and to the axial element 160 (see FIG. 8).

Thus, as shown in FIGS. 8 and 9, the retaining element 560 clipped onto the ring 105 after the complete passage of the retaining cable 5 in the box body 100 clamps the portion 5C of the retaining cable 5 outside the axial housing 185 against the external face of the mounting part 181 of the body 180 of the axial element 160.

Advantageously, the retaining element 560 makes it possible to temporarily retain the box body 100 on the retaining cable 5, before the hook 10 is fixed in the axial housing 185.

The installation of this variant of the DCL 1000 is identical to that shown in Figures 1 to 5 (as already described above), with the exception of the insertion of the free end part 5A of the retaining cable 5 in the axial housing 185 (see description above) and the pre-blocking of the box body 100 by means of the retaining element 560 threaded onto the sheath 182 of the axial element 160 until it is clipped onto the ring 105 of the box body.

In FIGS. 13 to 20, two other embodiments of the DCL 2000 according to the invention are shown, which comprises an assembly: box body 200 and electrical connection module 240, for simplified mounting.

Such a box body has already been described as an “electrical box” in French patent application FR3000310 belonging to the applicants.

We will therefore refer to the description of the request FR3000310 for more details on this connection assembly.

Essentially, the box body 200 comprises a tubular side wall 201 of revolution about a central axis AZ, closed at the rear by a bottom wall 202 and open at the front so as to delimit the space interior 210.

The side wall 201 of the box body 200 is also bordered at the front by a sidewalk 203 adapted to bear against the front face of the ceiling wall 1 when the box body 200 is inserted into the cavity 2.

The means for mounting the box body 200 in the cavity 2 of the ceiling wall 1 comprises four diametrically opposite bending tabs which are cut in the side wall 201 of the box body 200, and a latching tooth carried by each tab bending, at the rear of said bending tabs. When the box body 200 is inserted into the cavity 2 of the ceiling wall 1, the snap-in teeth make it possible to pre-hold the box body 200 in the ceiling wall 1.

As shown in FIG. 13, there is provided on the front face of the bottom wall 202 of the box body 200 a connection terminal block supplied by electric wires (not shown) reaching this terminal block by an electrical sheath (not shown) opening into an opening 207 for the arrival of an electrical sheath.

The interior space 210 of the box body 200 is intended to receive an electrical connection module 240. In other words, the electrical connection module 240 is attached to said interior space 210 from the front of said box body 200.

The electrical connection module 240 comprises an insulating base and connection plugs 236.

The connection plugs 236 are arranged at the rear of said electrical connection module 240 and are intended to be connected to the connection terminal block of the box body 200 to electrically connect said electrical connection module 240.

As shown in FIG. 13, the base of the electrical connection module 240 comprises a side wall 241 closed at the front by a front wall 243.

The base of the electrical connection module 240 comprises the well 237 adapted to receive the electrical connection plug of a luminaire (not shown) and at the bottom of which the connection means of the luminaire have access to the connection means of the outgoing connection module 240 at the rear by the 236 connection plugs. The well 237 opens onto the front face of the front wall 243 of the said base of the electrical connection module 240.

The front wall 243 of the base of the electrical connection module 240 also carries windows 246 adapted to receive locking teeth of the cover 230 to secure said cover 230 to the base (see FIGS. 17 and 20).

The side wall 241 of the base of the electrical connection module 240 is bordered at the front by a front sidewalk 244 adapted to bear against the front face of an internal edge of the box body 200 so that the front wall 243 of the base the connection module 240 comes to touch the front face of the sidewalk 203 of the box body 200 (see Figures 14 and 17).

For fixing the electrical connection module 240 to the box body 200, the side wall 241 is further provided with two bending tabs 245 diametrically opposed and cut in said side wall 241. These bending tabs 245 are terminated by teeth snap adapted to snap into corresponding windows 206 of the side wall 201 of the box body 200.

When the electrical connection module 240 is snapped into the box body 200, the bending tabs of the side wall 201 of said box body 200 move outward so that the box body 200 is then securely held in place. ceiling wall 1.

Advantageously, as shown in Figures 13, 14 and 17, here, the axial element 250; 260 is integrated into the base of said electrical connection module 240.

More specifically, the axial element 250; 260 includes a sheath 272; 282 constituting said means for receiving and fixing the longitudinal element 12; 22.

The scabbard 272; 282 has an axial housing 275; 285 of generally cylindrical shape, which extends along the central axis AZ of the box body 200.

The axial housing 275; 285 is closed at the back by a bottom 275B. This axial housing 275; 285 has a mouthpiece 275A; 285A which opens onto the front face of the front wall 243 of the base of the electrical connection module 240 (that is to say at the front of said box body 200) to receive the longitudinal element 12 from the front; 22.

There is provided on the cover 230 of the DCL 2000, an access opening opening into said axial housing 275; 285. Thus, when the cover 230 is in position on the base of the electrical connection module 240, the longitudinal element 12; 22 can be inserted into the axial housing 275; 285, from the front of the DCL 2000, via the opening of the cover 230.

Here too, as shown in FIGS. 14, 18, 20 and 21, the longitudinal element constitutes the longitudinal part 12; 22 of a hook 10; 20. This hook 10; 20 also includes a curved portion 11; 21 used to hang the luminaire.

The internal face 273A of the axial housing 275 of the sleeve 272 is adapted to receive the self-tapping threads 14 of the longitudinal part 12 threaded of the hook 10. The screwing of said self-tapping threads 14 in the axial housing 257 taps said internal face 273A, so that the latter cooperates with said threads 14.

The axial element 250 and the axial housing 275 being centered on the central axis AZ of the box body 200, the longitudinal part 12 of the hook 10, fixed in the axial element 250, is then itself centered on the axis central AZ of the box body 200.

Advantageously, the luminaire attached to the hook 10 is then centered on the DCL 2000.

According to the variant embodiment shown in FIG. 19, the hook fastening means 20 are quarter-turn fastening means 24.

There is then provided in said axial housing 285 of the sleeve 282 a quarter turn fixing ramp 287 adapted to cooperate with said quarter turn fixing means of the longitudinal part 22 of the hook 20.

Here, the quarter-turn fastening means 24 are provided at the rear end of the longitudinal part 22 of the hook 20.

Alternatively, they could be provided at another location along said longitudinal part of the hook.

The quarter-turn fixing ramp 287 has, over the entire length of the axial housing 285, a shape which corresponds to the shape of the quarter-turn fixing means 24 of the longitudinal part 22 of the hook 20.

Here, the quarter-turn fastening ramp 287 and the quarter-turn fastening means 24 have an oblong shape.

Furthermore, as shown in Figures 13 to 19, here there is provided in the bottom wall 202 of the can body 200 two passages 450, 451, parallel to the axis AZ, and intended respectively for the entry of the free end portion 5A of the retaining cable 5 in the interior space 210 of the box body 200 as well as at its exit from the interior space 210 of the box body 200 towards the outside.

The first and second passages 450, 451 are formed by two conduits passing right through the bottom wall 202 of the box body 200. The internal ends (that is to say those opening into the interior space 210) of the first and second passages 450, 451 can advantageously be closed off with pierceable waterproofing membranes made of SEBS.

The first through conduit, corresponding to the first passage 450, extends in a direction parallel to the central axis AZ, near said central axis AZ in the extension of said axial housing 275; 285 of the sheath 272; 282, while the second conduit, corresponding to the second passage 451, is offset relative to the axial housing 275 (see FIG. 14).

Here, the sheath 272; 282 is arranged to receive said portion 5B of said free end portion 5A of the retaining cable 5 in said axial housing 275; 285 parallel to the AZ axis (see Figure 14).

In correspondence, the second passage 451 communicates with an additional through duct 454; 464 provided in the base of the electrical connection module 240, parallel to the axis AZ (see Figures 14 and 19).

There is a through opening in the bottom 275B of said axial housing 275, in correspondence with said through conduit forming the first passage 450, so that the free end part 5A of the retaining cable 5 introduced in said first passage 450 can open out in said axial housing 275.

The internal face of the sheath 272; 282 has, in hollow, at least one axial groove 279; 289 extending at least partially along said axial housing 275; 285, to receive said portion 5B of the free end part 5A of the retaining cable 5 (see FIGS. 15, 16 and 19).

As shown in Figures 15 and 16, here the axial groove 279 extends over the entire length of the axial housing 275.

In the variant shown in Figures 17 and 19, the axial groove 289 extends only over a rear portion of the axial housing 285, located at the quarter-turn locking means of the quarter-turn ramp 287.

This axial groove 289 is extended forward by a conduit 463 provided in the base of the electrical connection module 240 and opening out at the front of said base, near the mouth 285A of the axial housing 285.

The free end part 5A of the retaining cable 5 can be inserted from the outside of the box body 200 to the interior space 210 via the through duct 450 provided in the bottom wall 202 of the box body 200. It pierces the possible sealing membrane and is introduced into the axial housing 275; 285, runs along said axial housing, and leads to the mouth

275A; 285A of said axial housing 275; 285.

The free end part 5A of the retaining cable 5 is then introduced into the through conduit 454; 464 additional from the base of the electrical connection module 240 then passes through the second passage 451 to exit outside the box body 200.

Advantageously, on the front face of the base of the electrical connection module 240, the retaining cable 5 forms a U which makes it possible to retain the box body 200 on the retaining cable 5 before the longitudinal part 12 is fixed; 22 of hook 10; 20 in the axial housing 275; 285.

Advantageously, according to the variant shown in FIG. 17, there is also provided on the front face of the base of the electrical connection module 240, near the front mouth 285A of the axial housing 285, at least one retaining flange 580 of the retaining cable 5.

When the retaining cable 5 is inserted through this retaining flange 580, said retaining cable 5 is forced to form a baffle at the front of the base of the electrical connection module 240, which reinforces the retention of the box body 200 on the retaining cable 5 both before the fixing of the longitudinal part 22 of the hook 20 in the axial housing 285 and after this fixing.

When the longitudinal part 12; 22 of hook 10; 20 is screwed or locked a quarter of a turn in the axial housing 275; 285 this compresses the portion 5B of the retaining cable against the bottom of the groove 279; 289 provided in the internal face of the sheath 272; 282.

The different elements of the DCL 1000; 2000 according to the invention are simple to manufacture by molding synthetic materials. They are simple to assemble.

They allow access to the retaining cable 5 from the front of said DCL 1000; 2000, without having to dismantle it from the ceiling wall 1, and without using specific tools.

The present invention is not limited to the embodiments described and shown, but the skilled person will be able to make any variant according to his spirit.

In particular, it is conceivable that the curved part 11 of the body of the hook 10 is pivotally articulated on said longitudinal part 12 of the body of the hook 10.

For example, as shown in FIG. 21, this articulation can be produced by a pivot axis 15 connecting the curved part 11 to the longitudinal part 12.

Advantageously, the unused part 11 of the body of the hook 10 5 can then be folded down in a recess 239 provided for this purpose on the front face 230B of the cover 230 of the connection device 2000 (see FIG. 20).

According to a variant not shown of the invention, it could be provided that the longitudinal element which wedges the retaining cable is a simple screw body, or a simple quarter-turn fixing element without hook.

The box body of the connection device could also have a different shape, in particular parallelepiped rather than cylindrical.

Claims (19)

1. Luminaire connection device (1000; 2000) comprising: - a box body (100; 200) to be embedded which delimits an interior space (110; 210) closed at the rear and open at the front, and - an axial element (150; 250) which extends in the interior space (110; 210) between the rear and the front of the box body (100; 200), and which comprises means for receiving and fixing, from the front of the box body, of a longitudinal element (12; 22), characterized in that said receiving and fixing means (172; 182; 272; 282) are arranged to receive a portion (5B ) a free end part (5A) of a retaining cable (5) which enters said interior space (110; 210) via a first passage (350; 450) provided at the rear of said connection device , so that said longitudinal element (12; 22) is adapted to act on said portion (5B) of said free end portion of the retaining cable (5) to block the position of said box body on said retaining cable. 2. A luminaire connection device (1000; 2000) according to claim 1, wherein said receiving and fixing means comprise a sheath (172; 182; 272; 282) having an axial housing (175; 185; 275; 285 ) a mouth (175A; 185A; 275A; 285A) opens at the front of said box body (100; 200) to receive said longitudinal element (12; 22), said sheath being further arranged to receive said portion (5B ) of said free end part (5) of the retaining cable (5) in said axial housing. 3. A luminaire connection device (1000; 2000) according to claim 2, wherein said sheath (172; 272; 282) is arranged to receive said portion (5B) of the free end part (5) of the cable. holding (5) in a direction parallel to the axis AZ of said axial housing (175; 275; 285). 4. luminaire connection device (1000; 2000) according to claim 3, wherein said sheath (172; 272) has an internal face (173A; 273A) delimiting said axial housing (175; 275), and it is provided in hollow of said internal face (173A; 273A) at least one axial groove (179; 279) extending at least over part of the length of said axial housing (175; 275). 5. luminaire connection device (1000) according to one of claims 2 to 4, wherein there is provided at the mouth (175A) before said axial housing (175) at least one retaining notch (550) of said cable holding (5). 6. luminaire connection device (2000) according to one of claims 2 to 4, in which there is provided near the mouth (285A) before said axial housing (285), at least one cable retaining flange holding. 7. A luminaire connection device (1000) according to claim 2, wherein said sheath (182) has two through openings (365) facing each other so that it is arranged for receiving said portion (5B) of the free end portion (5A) of the retaining cable (5) in a direction transverse to the axis AZ of said axial housing (185). 8. A luminaire connection device (1000) according to claim 7, in which there is provided a retaining element (560) attached to said sheath (182) to clamp another portion (5C) of said free end part ( 5A) of the retaining cable (5) extending outside said axial housing (185). 9. luminaire connection device (1000) according to one of claims 1 to 8, wherein the axial element (150; 160) is attached through an opening (104) provided in a bottom wall (105 ) of said box body (100). 10. A luminaire connection device (1000) according to claim 9, wherein said first passage (350; 360) belongs to a mounting part (171; 181) of the body (170; 180) of the axial element (150 ; 160) on the box body (100). 11. Luminaire connection device (1000) according to any one of the preceding claims, in which said first passage (350) is closed by a flexible, pierceable sealing membrane (351). 12. Luminaire connection device (2000) according to any one of claims 1 to 8, in which the axial element (250; 260) is integrated into the base of an electrical connection module (240) added in said space. interior (210) through the front of said box body (200). 13. A luminaire connection device (2000) according to claim 12, wherein said first passage (450) belongs to a bottom wall (202) of said box body (200). 14. luminaire connection device (1000; 2000) according to one of claims 1 to 13, in which a second passage (361; 451) is provided at the rear of said connection device for the exit of said part d the free end (5A) of the retaining cable (5) from the interior space (110; 210) towards the exterior of said box body (200), said second passage belonging to a bottom wall of said box body. 15. luminaire connection device (1000) according to one of claims 9 to 11, in which a second passage (361) is provided at the rear of said connection device for the exit of said free end part ( 5A) of the retaining cable (5) from the interior space (110) to the exterior of said box body (100), said second passage (361) belonging to a mounting part (181) of the body (180) of the axial element (160) on the box body (100). 16. luminaire connection device (1000; 2000) according to one of claims 2 to 15, in which the axial housing (175; 185; 275) of the sleeve (172; 182; 272) is adapted to receive the threads ( 14) of a thread of the longitudinal element (12). 17. luminaire connection device (2000) according to one of claims 2 to 15, wherein there is provided in said axial housing (285) of the sleeve (282) a quarter-turn fixing ramp (287) of a quarter-turn fixing element (24) of the longitudinal element (22). 18. luminaire connection device (1000; 2000) according to one of claims 1 to 17, in which the longitudinal element (12; 22) constitutes a longitudinal part of the body of a hook (10; 20) provided for hanging a light fixture. 19. A luminaire connection device (1000; 2000) according to claim 18, in which the body of said hook (10) comprises a curved part (11) pivotally articulated on said longitudinal part (12). 2/7 130 171A 171B 174 175A 351 ¹⁷⁵⁶ 170 50 172 3/7 181B ¹⁰⁹ 1000 XV 562A 4/7 181B E 5/7 451 2000