FR3061216A1 - SUSPENSION ASSEMBLY FOR SUSPENDING A FALSE CEILING WITH SEALED MEMBRANE - Google Patents

Abstract

The invention relates to a suspension assembly for suspending a false ceiling from a floor wall, said false ceiling comprising a waterproof membrane (108). Said suspension assembly comprising: a longitudinal suspension member (10) having a hooking end (12), and an opposite anchoring end (14) for anchoring said hanger to said floor wall; a retaining member (84) having a peripheral portion and a central portion (92) engaging said latching end, while said sealing membrane (108) is held in a fixed position between said retaining member (84) and said hooking end (12). Said hooking end (12) has a locking hole (66), while said central portion (92) protrudes, and said central portion (92) is adapted to be driven to perforate said watertight membrane ( 108) and to be locked through said locking hole (66).

Description

© Holder (s): INDUSTRIAL PARTS AND ACCESSORIES - P.A.I. Joint stock company.

O Extension request (s):

© Agent (s): CABINET FEDIT LORIOT.

(54) SUSPENSION ASSEMBLY FOR SUSPENDING A FALSE CEILING WITH SEALED MEMBRANE.

FR 3,061,216 - A1 (57) The invention relates to a suspension assembly for suspending a false ceiling from a floor wall, said false ceiling comprising a waterproof membrane (108). Said suspension assembly comprising: a longitudinal suspension member (10) having a hooking end (12), and an anchoring end (14) opposite so as to be able to anchor said hanger to said floor wall; a retaining member (84) having a peripheral portion and a central portion (92) engaging said hooking end, while said waterproof membrane (108) is held in a fixed position between said retaining member (84) and said hooking end (12). Said hooking end (12) has a locking hole (66), while said central part (92) projects, and said central part (92) is intended to be driven to perforate said waterproof membrane ( 108) and to be locked through said locking hole (66).

Pr

Suspension assembly for suspending a waterproof membrane false ceiling

The present invention relates to a suspension assembly for suspending a false ceiling from a floor wall.

A false ceiling is a ceiling suspended from a floor wall, or main ceiling, and which makes it possible to include in particular, a layer of insulation and the cable trays or the air conditioning circuits, in addition to a plaster panel which comes hide.

Also, false ceilings have an airtight membrane which is extended between the insulation layer and the plasterboard, precisely to be able to make false ceilings more waterproof.

Also, the known suspension assemblies for suspending false ceilings include a rod having a hooking end and, opposite, an anchoring end capable of being anchored in the floor wall. The rod then comes to extend substantially vertically and its hooking end has a free pointed end. And behind the free end, the hooking end has a bulge in which is formed a groove. The rod then engages the insulation layer so that its attachment end comes to project from the layer. We then come back a conical washer mounted by force in the groove to allow to retain the insulation layer thus suspended. The conical washer is mounted so that its convexity is oriented towards the floor wall. Furthermore, the width of the groove is greater than the thickness of the conical washer. The floor wall is equipped with a plurality of suspension assemblies installed step by step.

Then, the waterproof membrane is applied against the insulation layer and it is force-driven at each of the attachment ends, so that their free pointed end punctures the membrane.

The suspension assembly also includes a retaining member having a central bore surrounded by a bearing face and a peripheral part intended to engage in a furring strip. The retaining member has a recess defining a shoulder inside the central bore in the vicinity of the bearing face. Thus, the retaining member is brought to the level of the free end at a point perforating the membrane so as to be able to engage the free end through the central bore. The retaining member is then force-driven so as to pinch the waterproof membrane between the bearing face and the conical washer and allowing the shoulder to come and engage in the groove of the bulge. Thus, the membrane remains engaged and sealingly between the conical washer and the retaining member.

The suspension assemblies thus described in the document FR 2 925 929 are installed step by step in the floor wall in order to be able to suspend the false ceiling.

Such suspension assemblies are difficult to install because they require a large number of manual operations carried out at arm's length by operators installed on stepladders or scaffolding.

Also, a problem which arises and which the present invention aims to solve is to provide a suspension assembly which is simpler to implement and also less costly to produce.

For this purpose, it is proposed, a suspension assembly for suspending a false ceiling from a floor wall, said false ceiling comprising a waterproof membrane situated between a layer of insulation and a ceiling panel, said suspension assembly comprising: a longitudinal suspension member comprising an attachment end, and an opposite anchoring end so as to be able to anchor said hanger to said floor wall, while said suspension member extends through said layer of insulation; and, a retaining member having, a peripheral part intended to be connected to said ceiling panel, and a central part coming into engagement with said hooking end, while said waterproof membrane is held in a fixed position between said retaining member and said hooking end. Said hooking end has a locking hole, while said central part extends in projection, and said central part is intended to be driven to perforate said waterproof membrane and to be locked through said locking hole.

Thus, a characteristic of the invention resides in the implementation, unlike the devices of the prior art, of a locking orifice in the attachment end of the suspension member and a central part projecting from the retaining member so as to be able both to perforate the waterproof membrane and then to join, continuing the same gesture, the retaining member and the attachment end. It will be observed that the waterproof membrane is substantially transparent. In this way, the operator can grasp the retaining member with one hand and hold the membrane with the other in abutment against the attachment end of a suspension member. Then it comes to carry the central projecting end of the suspension member opposite the locking orifice in order to force it there by puncturing the membrane.

Thanks to the suspension assembly according to the invention, the work of the operator is greatly facilitated. In addition, it has less room to implement, and is less expensive.

According to a characteristic of the invention which is particularly advantageous, but in no way limiting, said suspension member has a first bearing surface extending around said locking orifice. The waterproof membrane is then applied against the bearing surface so as to be able to maintain the seal at the perforation.

In order to complete this seal, said retaining member has, in a particularly advantageous manner, a second bearing surface extending around said central part. Thus, the waterproof membrane can then be pinched between said two bearing surfaces, one of the attachment end, the other of the retaining member. Preferably, the bearing surfaces extend in a circular manner respectively around the locking orifice and around the central part so as to be able to seal all around the perforation.

Also, according to a particularly advantageous characteristic of the invention, said locking orifice is oblong. And in addition, said central part is flat. In this way, the flat central part is forcibly engaged through the oblong locking orifice while perforating the waterproof membrane.

In addition, and according to a preferred characteristic, said central part has a free pointed end and two opposite shoulders. Thus, the free pointed end of the central part makes it easier to perforate the membrane. In addition, the two opposite shoulders are intended to come to bear on the edge of the oblong locking orifice after the suspension member has been driven in rotation substantially by a quarter turn. This ensures the locking of the central part inside the locking hole in a simple manner, by linking a translational movement and a rotational movement of the single retaining member. Also, the retaining member having no orifice, when the bearing surfaces extend in a circular fashion respectively around the locking orifice and around the central part, the sealing of the membrane is preserved despite the perforation.

According to a preferred embodiment of the invention, said attachment end has two legs and a plate integral with said legs, said plate extending substantially perpendicular to said two legs. Thus, the two legs join the plate in its two opposite edges so as to be able to maintain it in a perpendicular position with great rigidity. The insulating layer is then held in abutment on the plates of the suspension assemblies installed step by step.

Also, and in a particularly advantageous manner, said locking orifice is formed in said plate between said legs. In this way, when the central protruding part is introduced into the locking hole while passing through the waterproof membrane, the longitudinal suspension member easily takes up the axial forces associated with this introduction, without deformation.

In addition, said longitudinal suspension member has a flat body between said anchoring and hooking ends, said flat body being divided into a plurality of successive frangible portions. In this way, the suspension members are produced with, for example, three successive frangible portions, so as to be able to adapt their length in situ as a function of the floor height, as will be explained below.

In addition, each of said portions has two opposite ends which are symmetrical to each other, each of said ends having pairs of lateral anchoring notches. Thanks to these lateral notches, the ends of the portions can be engaged inside a fur in order to be secured to it.

Other particularities and advantages of the invention will emerge on reading the description given below of particular embodiments of the invention, given by way of non-limiting indication, with reference to the appended drawings in which:

- Figure 1 is a schematic perspective view of an element of the suspension assembly according to the invention;

- Figure 2 is a schematic detail view of the element shown in Figure 1;

- Figure 3 is a schematic bottom view of the element shown in Figure 1;

- Figure 4 is a schematic elevational view of another element of the suspension assembly according to the invention;

- Figure 5 is a schematic detail view in perspective showing the mode of cooperation of the element shown in Figures 1 to 3 and the other element shown in Figure 4;

- Figure 6 is a schematic detail view in axial section of the elements shown in Figure 5; and,

- Figure 7 is a schematic view in axial section partially showing a false ceiling and the suspension assembly according to the invention.

Figure 1 illustrates a longitudinal suspension member 10 having at the bottom, a hooking end 12 in the shape of an inverted T, and at the top, an anchoring end 14. The suspension member 10 is preferably obtained by series by cutting and stamping then folding strips of galvanized sheet metal. The suspension member 10 has a flat body 16 which extends longitudinally along a mean plane PM, while the hooking end 12 comprises a plate 18 connected to the flat body 16 by two opposite legs 20, 22. The plate 18 extends in a direction substantially perpendicular to the longitudinal flat body 16. The attachment end 12 will be detailed in the following description, with reference to FIGS. 2 and 3.

The flat body 16 has longitudinal and lateral silages 24, 26 then delimiting lateral edges 23, 25, and extending from the fastening end 12 to the anchoring end 14. These longitudinal silages make it possible to stiffen the flat body 16. The two lateral edges 23, 25 come to extend in the same plane, while the two longitudinal silken lines delimit a central strip 27 in an offset coming to extend in another plane substantially parallel to the plane of the lateral edges 23, 25.

In addition, the flat body 16 is precut into four successive elements, a first element 28 extending the attachment end 12 two intermediate elements 30, 32 and a free element 34 constituting the anchoring end 14. These successive elements 28 , 30, 32, 34 are precut in that they are separated from each other by pairs of opposite lateral notches 36, 38, formed in the lateral edges 23, 25, up to the longitudinal silks 24, 26. These lateral notches opposite 36, 38, are remarkable in that they are symmetrical, first of all from one another with respect to a median axial plane Pm perpendicularly cutting the central strip 27 in an offset. Also, each of these notches 36, 38 have two rounded sides 40, 42 symmetrical to each other with respect to a transverse plane Pt, perpendicular to the median plane Pm.

Furthermore, it will be observed that the central strip 27 in an offset, at the notches 36, 38, has a diamond-shaped lumen 44 extending from one run 24 to the other 26.

Also, it will be observed that at the level of the pairs of notches 36, 38, two pairs of notches, an upper pair 46, 48 and a lower pair 50, 52 are formed in the lateral edges 23, 25. The two notches 46 , 48 of the upper pair and the two notches 50, 52 of the lower pair are respectively symmetrical to each other with respect to the median plane Pm. In addition, the two notches 46, 50 made in the same border 23, just like the two notches 48, 52 made in the other border 25, are respectively symmetrical to each other with respect to the transverse plane Pt.

It will also be observed that the rounded flanks 40, 42 of the notches 36, 38 extend respectively and symmetrically up to the notches 46, 48; 50, 52.

Thus, despite the cuts 46, 48; 50, 52 and the notches 36, 38 the flat body 16 is rigid. It extends, for example, over a length of between 300 mm and 500 mm, while the pairs of notches 36, 38 extend from one another by a distance of, for example, between 80 mm and 100 mm. In addition, the flat body 16 has a width, for example between 40 mm and 50 mm.

An advantage of the structure of the flat body 16 thus described, is that it can be adjusted to a more suitable length because the successive elements 28, 30, 32, 34 are frangible with respect to each other at the level of the pairs of notches 36, 38 according to their respective transverse plane Pt which they define. Indeed, thanks to the two opposite notches 36, 38 doubled by the presence of the diamond-shaped light 44, a repeated double folding of the flat body 16 at the level of these notches, for example, causes the rupture of the flat body 16 along a connecting line substantially the hollow of the two opposite notches 36, 38. Any other cutting means is possible and is made easier at the transverse planes Pt, by the reduction of material along these planes.

It will then be observed that, thanks to the rounded flanks 40, 42 and the notches 46, 48; 50, 52 one obtains anchoring ends which can engage in a fur made of a U-shaped profile whose free ends of the wings have been bent towards one another.

Also, it will be observed that for each of the successive elements 28, 30, 32, 34, the central strip 27 in an offset exhibits, at the intersection with the median plane Pm, two opposite fixing orifices 54, 56 at the ends, and a slot upper axial 58 as well as two intermediate fixing holes 60, 62. These fixing holes 54, 56,

60, 62 and this axial slot 58 offers multiple fixing possibilities as will be explained below.

Reference will now be made to FIGS. 2 and 3 illustrating in detail the essential elements of the attachment end 12.

We find in Figure 2 the plate 18 retained by the two legs 20, 22. It will be observed, that the two legs 20, 22 respectively have two curved edges 61, 63 which extend back respectively in the edges of the plate 18 These curved edges 61, 63 then form reinforcing ribs making it possible to improve the rigidity of the plate 18 relative to the flat body 16.

The plate 18 has a circular recess of support 64 directly above the flat body 16, in which an oblong orifice 66 is formed which extends substantially perpendicularly to the mean plane PM, and therefore, along the median plane Pm. The oblong orifice 66 and thus delimited by an internal edge 68 and it extends between two opposite ends 70, 72 which are symmetrical to one another with respect to the mean plane PM. It will be observed that the plate 18 has two curved tongues 74, 76 from the internal edge 68, parallel to the legs 20, 22, one 74 in a lateral portion of one of the ends 70 of the oblong orifice 66, the another 76, in an asymmetrical lateral portion of the other of the ends 72 of the oblong orifice 66.

Conversely, the circular recess of support 64 has two embossments, one 78 on the same side as the tongue 74 near the other end 72 of the oblong orifice 66, the other 80 on the same side as the tongue 76, near the ends 70 of the oblong orifice 66. The two embossings 78, 80 are also asymmetrical to one another.

Found in Figure 3 in bottom view, the plate 18 and precisely the circular recess 64 defining a first bearing surface 82 substantially planar around the oblong orifice 66. We also find the two imprints of the embossings 78, 80 , as well as the two tongues 74, 76, which are asymmetrical to one another with respect to the mean plane PM.

Reference will now be made to FIG. 4 presenting a retaining member 84 which is advantageously obtained from a single molded part.

The retaining member 84 has a head 86, and opposite a bearing and locking end 88. The head 86 is substantially flattened axially and it is of substantially circular shape around an axis A of the member retaining 84. In addition, it has a groove 90 so as to be able to engage the head 86 inside a fur as will be explained below.

The bearing and locking end 88 has a projecting central part 92 made of a triangular flat cutting element 94, in the shape of an arrow, having a free end with a point 96 along the axis A and defining two opposite shoulders 98 , 100. The flat triangular element 94 is sharp in that the two opposite sides, on either side of the tip 96, are made sharp by sharpening.

Behind the triangular cutting element 94, in the shape of an arrow, a support disc 102 defines a second bearing surface 104 extending circularly around the triangular cutting element 94 and facing the opposite shoulders 98, 100. It will be observed that the diameter of the support disc 102 is substantially equal to the diameter of the first support surface 82, of the plate 18, so as to be able to cooperate with each other as will be explained below. -after. In addition, the width of the triangular cutting element 94, taken between the two vertices opposite to that forming the free tip end 96, is substantially less than the length of the oblong orifice 66, but greater than its width. Its thickness is, in turn, significantly less than said width.

Also, the bearing and locking end 88 is connected to the head 86 by means of an axial trunk 106.

We will now describe in detail, the mode of cooperation of the retaining member 84 and the suspension member 10 firstly, with reference to FIGS. 3, 4, 5 and 6.

FIG. 3 thus illustrates a bottom view of the plate 18 which then extends substantially horizontally and against which a waterproof membrane 108 will be applied. It will be explained with reference to FIG. 7, to what extent this waterproof membrane 108 is Implementation.

Usually, the waterproof membrane 108 is substantially transparent. As a result, when it is kept applied against the plate 18, as illustrated in FIG. 3, the oblong orifice 66 is easily identified through the waterproof membrane 108. Consequently, by grasping the retaining member 84 by its head 86, the free end is brought in a point 96 against the waterproof membrane 108 in the center of the oblong orifice 66. The triangular flat cutting element 94 is then angularly oriented so as to be able to cross the oblong orifice 66. Thus, the triangular flat cutting element 94 is forced into force through the oblong orifice 66, thereby perforating the waterproof membrane 108, and until the second bearing surface 104 of the support disc 102 is applied against the first bearing surface 82 of the circular recess 64 as illustrated in FIG. 5. In this FIG. 5, the hand of the operator who maintains the retaining member 84 by his head 86 is not shown. However, it exerts an axial isostatic force on the retaining member 84.

Thus, the waterproof membrane 108, although perforated, has edges 110, 112 around the perforation which are sandwiched between the two bearing surfaces 104, 82 as illustrated in Figures 6. From this position , the retaining member 84 is rotated by the operator by a quarter turn, clockwise with respect to FIG. 3, around its axis of symmetry A. Consequently, the shoulders 98, 100 come respectively , firstly on the face of the circular recess of support 64 opposite the first bearing surface 82, then on the embossings 78, 80. In this way, the edges 110 are compressed axially, 112 of the waterproof membrane 108 between the bearing surfaces 104, 82. It will be observed that the rotation of the retaining member 84 is then limited by the tongues 74, 76 shown in FIG. 2, and that the central projecting part 92 is then locked. Thus, the retaining member 84 is not only integral with the plate 18, but moreover it keeps the membrane 108 tightly against the plate 18.

Referring to Figure 7, illustrating a suspension assembly 10 according to the invention, the anchoring end 14 is anchored in a floor wall element 114, the plate 18 retains a layer of insulation 116 and the retaining member 84 of which makes it possible both to hold the waterproof membrane 108 in a fixed position by cooperating with the plate 18, and a ceiling panel 118, for example in plaster, by means of a fur 120.

Thus, by gradually installing a plurality of suspension assemblies 10 according to the invention, it is possible to suspend the false ceiling equipped with its waterproof membrane.

Claims (10)

1. Suspension assembly for suspending a false ceiling from a floor wall, said false ceiling comprising a waterproof membrane (108) located between a layer of insulation (116) and a ceiling panel (118), said suspension assembly comprising : - a longitudinal suspension member (10) having a hooking end (12), and an anchoring end (14) opposite so as to be able to anchor said hanger to said floor wall, while said suspension member (10) s 'extends across said insulating layer (116); - a retaining member (84) having, a peripheral part intended to be connected to said ceiling panel (118), and a central part (92) engaging with said hooking end, while said waterproof membrane (108) is held in a fixed position between said retaining member (84) and said hooking end (12); characterized in that said hooking end (12) has a locking orifice (66), while said central part (92) projects, and in that said central part (92) is intended to be driven to perforate said waterproof membrane (108) and to be locked through said locking orifice (66). 2. Suspension assembly according to claim 1, characterized in that said longitudinal suspension member (10) has a first bearing surface (82) extending around said locking orifice (66). 3. Suspension assembly according to claim 1 or 2, characterized in that said retaining member (84) has a second bearing surface (104) extending around said central part (92). 4. Suspension assembly according to any one of claims 1 to 3, characterized in that said locking orifice (66) is oblong. 5. Suspension assembly according to any one of claims 1 to 4, characterized in that said central part (92) is flat. 6. Suspension assembly according to any one of claims 1 to 5, characterized in that said central part (92) has a free tip end (96) and two opposite shoulders (98, 100). 7. Suspension assembly according to any one of claims 1 to 6, characterized in that said hooking end (12) has two legs (20, 22) and a plate (18) integral with said legs, said plate (18 ) extending substantially perpendicular to said two legs (20, 22). 8. Suspension assembly according to claim 7, characterized in that said locking orifice (66) is formed in said plate (18) between said legs (20, 22). 9. Suspension assembly according to any one of claims 1 to 8, characterized in that said longitudinal suspension member (10) has a flat body between said anchoring (14) and hooking (12) ends, said flat body being divided into a plurality of successive frangible portions (30, 32, 34). 10. Suspension assembly according to claim 9, characterized in that each of said portions (30, 32, 34) has two opposite ends symmetrical to each other, each of said ends having pairs of lateral anchoring notches (36, 38). 1/4 2/4