WO2008043483A1 - Method for insert-mounting a spotlight, tool for realising said method and corresponding spotlight - Google Patents

Abstract

The invention relates to a mounting method that comprises inserting a spotlight (1) comprising a cylindrical body (2) including lighting members, and introduced into a holder (9) having a cylindrical portion (10) that comprises an essentially flat collar (12) with cut-outs (14, 15) to be installed in a reduced-depth bore (30) previously formed in a ceiling, a wall or a floor and to be covered with a plaster- or cement-type material. The spotlight is maintained in the holder by an O-ring. A specific tool is advantageously used for forming the bore with a reduced depth.

Description

 Description

METHOD FOR MOUNTING A SPOT BY RECESSING, TOOL FOR IMPLEMENTING THIS METHOD AND SPOT

CORRESPONDING Technical Area

The invention relates to a method of mounting a spot to be embedded in an implantation area defined in a fixed structure such as in a ceiling, a wall or a floor. It also relates to a tool for implementing the mounting method, and a spot to be mounted in an implantation area by this mounting method. State of the art

The mounting of spots by embedding, for example in false ceilings or in plaster or brick walls or in concrete requires relatively large masonry work. It is indeed necessary to practice bores in the ceilings, floors or walls followed by masonry or plaster work intended to make the spot or a spot support integral with the implantation area. This work, which involves handling cement or plaster are delicate, because they must be performed at the time when the building in which they are executed is almost completed, the operation of laying spots is at the last moment.

The patent application US 2004/0177572 describes a spot and its mounting method by embedding requiring the implementation of masonry operations or plastering. More specifically, this document provides that a bore is made in the spot implantation area, the latter being intended to be mounted in a support having a flange of diameter greater than that of the bore and intended to be covered with plaster after insertion of the support into the bore. The shape of the collar is such that, when the masonry or plastering operations are completed, the surface in the implantation area and around it does not have any discontinuity. Such a solution, however, remains complex to implement in particular because it requires an important knowledge of the fitter in masonry or plastering to ensure the desired effect. In addition, the region located directly around the spot has an extra thickness of material relative to the mean plane of the ceiling or wall in which the spot is mounted. Disclosure of the invention

A main object of the invention is to make the installation of spots by embedding easier for the workers who perform them, while ensuring a high quality of editing.

For this purpose, the invention provides a method of mounting a spot of the type comprising a support having a cylindrical portion of a first diameter and a flange of a second diameter, greater, and coaxial with the cylindrical portion being located at a predefined distance from one end of the cylindrical portion. The method comprises the steps of: providing a first bore having a diameter equal to or larger than the diameter of the flange and having a depth equal to or greater than the predetermined distance separating the flange from the end of the cylindrical portion; second bore whose diameter is greater than or equal to that of the cylindrical portion of the support and of sufficient depth to arrange the support in the implantation zone, the two bores being coaxial, arranging the support inside the second bore, its flange being housed in the first bore, filling the first bore with a material of the plaster or cement type to form a surface around the cylindrical portion of the support, located substantially in the middle plane of the ceiling, wall or floor in which the spot is intended to be mounted, make an electrical connection between a power source and the spot or its supp ort, assemble the spot in its support. The spot intended to be recessed in a ceiling, a wall or a floor, according to the mounting method of the present invention is characterized in that it comprises a body, generally cylindrical, containing lighting elements and adapted to be introduced into a support also cylindrical provided with a flange of generally planar shape, preferably circular and in which are formed cuts, the flange being intended to be placed in a shallow circular bore previously made in the ceiling, the wall or floor.

With such a spot, it is easy to put plaster in the circular or annular bore over the collar of the support and smooth the whole. The spot can then be secured to its support without providing additional fixing means.

The collar advantageously forms a grid surrounding the support.

The cutouts of the flange may be arranged in a radial orientation by being distributed over at least two annular rows surrounding the flange.

The cylindrical support may have at the bottom of its cylindrical part, namely on the side intended to be located towards the outside of the implantation zone, an annular flange placed under the collar and intended to receive and enclose the lateral periphery. an annular ring usually provided at the bottom of the cylindrical body of the spot.

The spot may have, on the casing of its cylindrical body, a groove for receiving an O-ring arranged to maintain the spot in its support. The present invention also relates to a tool for implementing the method of mounting a spot by embedding, as defined above. This tool is characterized by the fact that it comprises a disk-shaped plate, having a large radius R, integral with an axis intended to be coupled to the mandrel of a hand drill, the plate having a centering bit arranged in the alignment of the axis, of small radius r, and intended to pierce the ceiling, the wall or the ground and to guide the plate. The latter comprises at least one cutting surface, arranged on the same side as the centering bit and intended to perform a shallow bore, in the implantation zone, having the shape of a ring delimited by two circles of respective radii R1 and

R2, between the small and large r-rays and R.

The plate preferably has a plurality of cutting surfaces that can be made in the form of asperities occupying an annular surface of smaller diameter than the diameter of the disk, to reserve a peripheral bearing surface on the plate. The asperities can be achieved by means of radial portions cut and pushed or stamped to the side of the plate which is arranged the centering bit, so as to form scraping blades. The height of the asperities or scraping blades is preferably predetermined, depending on the depth of the annular bore to achieve. In a preferred embodiment, the scraping blades can be sharpened.

The tray can be made of stainless steel for example. Asperities or scraper blades present on the disc may optionally be covered with diamond powder. The drill on which the tool is mounted may have at least one spacer arm for adjusting or limiting the penetration of the tray in the implantation area. Finally, the mandrel of the drill and the tool may be enclosed in a bell whose circumference is arranged to come against the ceiling, the wall or the floor, the bell being connected to a suction device . This will prevent dust when mounting spots.

Brief description of the drawings

The drawing shows by way of example, an embodiment of the spot and the tool for mounting the spot according to the method of the invention.

In the drawing: [0024] FIG. 1 is a side view of a spot intended to be recessed in a ceiling, a wall or a floor, FIG. 2 is a section through a cylindrical support in which the spot will be introduced,

Fig. 3 3 is a bottom view of the support shown in FIG.

Figs. 4 and 5 show a view from above, respectively a side view of a tool intended to be mounted on the mandrel of a drill for mounting the spot shown in FIGS. 1 to 3 of the drawing in a ceiling, a wall or a floor,

Fig. 6 is a view of a conventional milling cutter intended to be used when mounting the spot of FIGS. 1 to 3, and [0029] FIG. 7 is a section through the spot of FIGS. 1 to 3 mounted by recess using the tools of fig. 4 to 6 in a false ceiling.

Mode (s) of realization of the invention

The spot 1 shown in FIG. 1 has a cylindrical portion 2 surmounted by an upper cover 3 on which is fixed a removable connection plug 4 connected to a power cable 5. The power cable 5 is intended to supply power to the lighting elements, for example halogen lamps or LEDs not shown in the drawing and located in the cylindrical portion 2.

At the bottom of the cylindrical portion 2, namely at its end intended to be located on the outside of the implantation area, is mounted a circular piece 6, for example by screwing, the latter supporting an annular ring 7. The circular piece 6 will support for example a not shown glass and / or a filter. Finally, an O-ring 8 is placed at the bottom of the cylindrical body 2, so as to frictionally retain the spot of FIG. 1 in its support of FIG. 2.

The support 9 shown in FIGS. 2 and 3 has a cylindrical portion

10 hollow ending at its lower end, namely that intended to be located on the outside, by an enlarged portion 11 supporting a circular flange 13 for enclosing the circular ring 7 of the spot 1 after it has been introduced into the support 9.

On the cylindrical portion 10 is placed a flange 12 which abuts on the circular flange 13 of the support 9. The flange 12 is rendered secured to the support 9 by means of weld points not shown or simply by gluing.

As shown in FIG. 3, which is a top view of the support 9, by way of nonlimiting illustration, the collar 12 has two rows of cutouts 14 and 15 arranged radially.

As mentioned above, when the collar is integral with a ceiling, a wall or a floor, the spot 1 of FIG. 1 can be introduced from below into the support 9 after the power plug 4 supporting the cable 5 has been connected. The spot 1 is then held by friction in the support 9 thanks to the O-ring 8.

The tool shown in Figs. 4 and 5 comprises a disc-shaped plate 20 provided, on a first face, with an axis 21 intended to be clamped in the mandrel of a drill, not shown.

On its second face, the plate 20 is provided with a wick 22 for centering, or guide, for drilling a hole in an implantation area of a ceiling, a wall or a floor in which the spot is intended to be mounted, and to guide the plate when it comes into contact with the surface of the implantation area.

In addition, the plate 20 has cut portions extending substantially in a radial direction and pushed or stamped to the side of the plate where the centering bit is located, so as to form scraping blades 23. The blades of scraping have a maximum height, with reference to the average plane of the tray, chosen so as to correspond to the predefined depth of an annular bore that is to be practiced in the area where the ceiling, wall or floor is which will serve to receive the flange 12 of the support 9 as shown in FIG. 7 of the drawing.

The scraping blades 23 are arranged on the plate 20 so that when the latter is rotated, they scan an annular surface coaxial with the centering bit and having an outer radius R2 smaller than the large radius R of the plate . The annular surface advantageously has an inner radius R1 equal to or greater than the small radius r of the centering bit. The difference between R2 rays scraping blades and R of the plate makes it possible to define a peripheral bearing surface of the plate 20, the function of which will be explained later.

The pushed parts 23 may advantageously be sharpened in the case where they are intended to work the plaster, or provided with diamond powder in the case where the spot must be installed in a ceiling, a wall or a harder ground, for example made of brick or concrete. The use of the tool described above in connection with a drill makes it possible to perform a first shallow bore in the implantation zone, intended to house the flange 12 of the spot support 9.

Once this first bore of shallow depth achieved, the installer can use a bur 25 as shown in FIG. 6. This mill 25 is known to those skilled in the art and will therefore not be described in detail. Its diameter is chosen to provide, in the area of implantation of the spot, a bore which can receive the cylindrical body 10 of the support 9 for holding the spot 1 of FIG. 1. For this purpose, the cutter 25 has teeth 26 on its periphery, which may optionally be provided with diamond powder in the case where the cutter is used to work ceilings, walls or very hard floors. The cutter 25 also has a guide wick 27 to be introduced into the hole made by the guide wick 22 of the tool shown in Figs. 4 and 5. Thus, the mounting of the support 9 of FIG. 2 is extremely easy and can be done by a non-specialized worker.

The overall mounting method of the spot described in relation to FIGS. 1 to 3 is explained in the following with reference to FIG. 7. [0047] We will assume that the spot must be mounted in a false plaster ceiling. To proceed with the assembly, the performer has the tool of Figs. 4 and 5 on the chuck of a drill as explained above. The drill is advantageously provided with a not shown protection bell surrounding the top of the drill and the tool of FIGS. 4 and 5. It will be connected to a vacuum cleaner also not shown. Thus all the dust caused by the tool of FIGS. 4, 5 or 6 will be sucked and we will avoid dirtying where the spot is mounted. The drill may also be provided with at least one spacer arm for adjusting and limiting the penetration of the tool into the implantation area.

The worker performing the assembly then places the centering bit 22 on a predefined implantation area of the ceiling and begins to press the tool against the ceiling by operating the drill to drive the centering bit in the ceiling. When the wick 22 has sufficiently penetrated the ceiling, the repelled portions 23 begin to scrape the ceiling and perform the shallow bore 30 shown to the left in FIG. 7.

When the peripheral support surface of the plate 20 comes into contact with the ceiling around the bore, the plate can not advance, which allows to define the depth of the bore 30.

The worker can remove the tool and replace it with the cutter shown in FIG. 6, to perform a second bore 31, central, allowing the establishment of the support 9. [0052] As shown in FIG. 7, the support 9 is placed inside the central bore 31 and the shallow bore 30. Plaster is then deposited in the annular bore 30 so as to cover the collar 12 of the support 9. plaster is introduced into the cutouts 14 and 15 of the collar to cover it and imprison it in the plaster as shown at 32 in FIG. 7. [0053] To smooth the plaster, the worker has the circular rim 13 as a marker, which allows him to perform his operation very easily, even if he is not an experienced plasterer. In addition, the result obtained has a perfect aesthetic because the spot support is completely integrated with the ceiling, ie the surface around the support is substantially coplanar with the fixed structure, here the ceiling, in and around the area of the ceiling. implantation. When the flange 12 is in place and trapped in the plaster, it is extremely easy to connect the spot 1 of FIG. 1 and introduce it into the holder.

Although the mounting of the spot described in FIGS. 1 to 3 of the drawing has been exposed in connection with a false ceiling made of plaster, it is obvious to those skilled in the art that the support and its spot can also be mounted in much harder walls, for example brick walls or concrete. In this case the tool described in fig. 4 and 5 will be adapted to harder materials and present roughness likely to scrape these harder materials, for example a stainless steel plate with or without diamond powder, without departing from the scope of the invention. Similarly, the tool of FIG. 6 will also be suitable for harder surfaces as described above.

Moreover, it will be appreciated that those skilled in the art will be able to implement a variant of the tool described with reference to FIGS. 4 and 5 without departing from the scope of the invention. According to this variant, it can be provided that the plate 20 directly carries an additional cutting tool corresponding to the cutting element of the cutter 25, provided with the teeth 26, and arranged coaxially with the guide bit 22. Thus, the guide will be provided initially by the wick 22 and the cutting edge of the cutter 25 once the latter has begun to penetrate the implantation area. The shallow bore will be made last, when the plate reaches the surface of the implantation area.

By way of example, it may be noted that the spot installer will in this way have a complete range of tools of this type, having various dimensions and, allowing him to make the two bores necessary for the installation of a spot by embedding, as described above, by implementing a single drilling operation.

Claims

claims 1. Method of mounting by embedding, in a given implantation area of a fixed structure, a spot (1) of the type comprising a support (9) having a cylindrical portion (10) of a first diameter and a flange (12) coaxial with the support, of a second diameter greater than the first diameter, and located at a predefined distance from one end of the cylindrical portion, the method comprising the steps of: producing a first bore (30) whose diameter is equal to or greater than the diameter of the flange (12) and whose depth is equal to or greater than the predetermined distance separating the flange from the end of the cylindrical portion, making a second bore (31) having a diameter greater than or equal to equal to that of the cylindrical portion (10) of the support and of sufficient depth to arrange the support in said implantation zone, said first and second bores being coaxial, arranging the support (9) at the end interior of the second bore (31), its flange (12) being housed in the first bore (30), filling the first bore (30) with a plaster or cement-like material to form a surface around the cylindrical portion (10) of the support, substantially coplanar with the fixed structure in the implantation area, making an electrical connection (4, 5) between a power source and the spot (1) or its support (9), assemble the spot (1) in its support (9). 2. Method according to claim 1, characterized in that said first and second bores are made during a single drilling operation. 3. Method according to claim 1 or 2, characterized in that the realization of said bores is implemented with a bell whose periphery is applied against the fixed structure at the implantation area, the bell being connected to a device suction. 4. Tool for implementing the method according to claim 1 or 2, characterized in that it comprises a disk-shaped plate (20) having a large radius R, integral with an axis (21) intended to be coupled at the mandrel of a hand drill, the plate having a centering bit (22) arranged in alignment with said axis (21), of small radius r, and intended to pierce the implantation zone, said plate (20) comprising at least one cutting surface (23), arranged on the same side as the centering bit (22) and arranged to allow the realization of a shallow bore, in the implantation zone, having the shape of a ring delimited by two circles of respective radii R1 and R2, between said small and large r-rays and R. 5. Tool according to claim 4, characterized in that said cutting surface is in the form of asperities (23) distributed on the plate (20) in a ring delimited by circles of radii R1 and R2. 6. Tool according to claim 5, characterized in that said asperities (23) are made by means of portions, oriented substantially in a radial direction, cut and pushed or stamped on the side of said wick (22), so as to form scraping blades. 7. Tool according to claim 6, characterized in that said scraping blades are sharpened. 8. Tool according to claim 5 or 6, characterized in that said asperities (23) or scraping blades have a predetermined maximum height depending on the depth of the bore to shallow depth to achieve. 9. Tool according to claim 5 or 6, characterized in that said asperities (23) or scraping blades are covered with diamond powder. 10. Tool according to claim 4, characterized in that said plate (20) is stainless steel. Spot (1) intended to be embedded in a given implantation zone of a fixed structure by the implementation of the method according to claim 1 or 2, characterized in that it comprises a cylindrical body (2) containing lighting elements and disposed in a support (9) having a cylindrical portion (10) carrying a substantially flat collar (12), located at a determined distance from one end of the cylindrical portion, and provided with cutouts (14, 15), said flange (12) being intended to be placed in a first shallow bore (30) made in the implantation zone and coaxial with a second bore in which the carrier is to be introduced. 12. Spot according to claim 11, characterized in that the cutouts (14, 15) of the flange (12) form a grid surrounding the flange. 13. Spot according to claim 12, characterized in that the cutouts of the collar are arranged in a radial configuration being distributed in at least two annular rows of the collar. 14. Spot according to claim 11, characterized in that the support has, on the side of its end intended to be located towards the outside of the implantation zone, an annular flange (13) extending from the collar (12). ) to the outside for receiving and enclosing the lateral periphery of an annular ring (7) provided at the end of the cylindrical body (2) of the spot (1) intended to be visible. 15. Spot according to claim 11, characterized in that the spot has on its cylindrical body a circular groove for receiving an O-Ring (8) arranged to maintain the spot in its support (9).