EP1710365B1 - Sealing device for building constructions and method of its manufacture - Google Patents

Abstract

The device has a cylindrical axial conduit (16), and a flexible radial membrane (19) whose annular part is adjacent to a central opening (21). The annular part is axially folded and placed between an interior surface of the conduit and an exterior surface of an interior ring (17) that is engaged in the conduit. An external ring (22) surrounds an end of the conduit, where the compression forces of the membrane between the conduit and the ring (17) and between flanges (18, 20) of the rings are such that the membrane is fixed on the conduit. An independent claim is also included for a method for manufacturing a sealing device for a roof of a building.

Description

The present invention relates to a sealing device for the building, in particular for a roof, and a method for its manufacture.

Roofs of buildings, including flat slabs of roofs, have through-passages of rainwater runoff or chimneys.

Currently, these passages are equipped with ducts that have an annular collar resting on the roof, placed below the final sealing layer. Until now, these pipes are monobloc and lead because this relatively malleable material allows a relatively good and durable seal. Nevertheless, these lead pipes are heavy and not healthy. In addition, the connection of their free ends to ducts for example made of plastic poses sealing problems.

The document DE-A-39 00 909 discloses a sealing device mounted in situ on a wall of a building and obtained by installing a vertical pipe, then a flexible membrane, annular and radial around the pipe, having a raised annular portion, then a cylindrical sleeve on the pipe , taking care that a lower end portion of this sleeve passes over the raised annular portion of the membrane.

The document EP 0 670 942 discloses a sealing device which comprises a duct and a radial membrane having an opening and an axial annular portion surrounding this opening is taken between the inner face of the end of said pipe and the outer face of an inner ring engaged in the driving.

The present invention aims to replace such known devices.

The present invention relates to a sealing device intended to be installed on a wall, in particular a roof of a building, comprising an axial duct, a flexible radial membrane having an opening and including an annular portion adjacent to this opening is folded axially and is sealed between one end of said conduit and a mounting ring.

According to the invention, the mounting ring comprises a radial annular peripheral flange, such that a radial annular portion of the membrane surrounding its axial annular portion is gripped between the radial annular peripheral flange of the mounting ring and an annular flange. radial device disposed at the end of the axial duct.

According to the invention, said annular portion is preferably taken between the inner face of the end of said pipe and the outer face of an inner ring engaged in the pipe.

According to the invention, the end of the duct and said ring preferably have peripheral flanges between which said membrane passes and is taken.

According to the invention, the device preferably comprises an outer ring surrounding the end of said pipe.

According to the invention, said inner ring and said outer ring preferably have peripheral flanges between which said membrane passes and is taken.

The present invention also relates to a method of manufacturing the sealing device for a wall, in particular a roof, of a building, comprising a conduit.

According to the invention, this method consists in providing an opening through a flexible membrane, this opening being smaller than the section of said duct; radially placing this flexible membrane on or a short distance from an end edge of the conduit, in a position such that the annular portion adjacent to its opening extends inwardly of the conduit; and to engage an inner ring in the end of the duct and deform radially outwardly this ring, so that the annular portion of the membrane passes and is taken between the inner face of the end of said pipe and the outer face of this inner ring.

According to the invention, the radial deformation towards the outside of the inner ring preferably generates a radial deformation towards the outside of the duct.

According to the invention, the method may advantageously consist, prior to the introduction of the membrane, in engaging an outer ring around the end of the duct and in radially inwardly deforming this ring, so that this ring outer encloses the end of the duct.

According to the invention, prior to its introduction around the pipe, the outer ring preferably has an internal diameter at least equal to the outer diameter of the pipe.

According to the invention, prior to its introduction in the conduit, the inner ring preferably has an outer diameter at most equal to the inner diameter of the pipe.

According to the invention, the method may advantageously consist, prior to its implementation, to provide radial cuts in said annular portion of the membrane.

According to the invention, the method may advantageously consist in generating said deformation by means of a deformable tool radially in the direction of a peripheral counter-tool.

According to the invention, said tool preferably has a projecting annular portion and said peripheral counter-tool preferably has a radially corresponding annular groove.

• La figure 1 représente une coupe longitudinale d'un dispositif d'étanchéité selon l'invention, installé sur une dalle de toit ;
• La figure 2 représente une coupe longitudinale d'un second dispositif d'étanchéité selon l'invention, installé sur une dalle de toit dans une première position ;
• La figure 3 représente une coupe longitudinale d'un autre dispositif d'étanchéité selon l'invention, installé sur une dalle de toit dans une seconde position ;
• Les figures 4 à 8 représentent des coupes longitudinales d'une presse à différentes étapes de fabrication du second dispositif d'étanchéité ;
• La figure 9 représente une vue de dessus d'une membrane selon l'invention ;
• Et la figure 10 représente une vue en perspective d'un dispositif d'étanchéité selon l'invention.

The present invention will be better understood in the study of sealing devices described by way of nonlimiting examples and illustrated by the drawing in which:

• The figure 1 represents a longitudinal section of a sealing device according to the invention, installed on a roof slab;
• The figure 2 represents a longitudinal section of a second sealing device according to the invention, installed on a roof slab in a first position;
• The figure 3 is a longitudinal section of another sealing device according to the invention, installed on a roof slab in a second position;
• The Figures 4 to 8 represent longitudinal sections of a press at different stages of manufacture of the second sealing device;
• The figure 9 represents a top view of a membrane according to the invention;
• And the figure 10 represents a perspective view of a sealing device according to the invention.

Referring to the figure 1 it can be seen that there is shown a sealing device 1 which comprises a piece of axial cylindrical conduit 2 provided at one of its ends with a radial peripheral annular collar 3.

This sealing device 1 further comprises a radial flexible membrane 4 in the form of platinum, for example square, which has a central opening 5. The annular portion 6 adjacent to this opening 5 of the membrane 4 is folded axially and is engaged in the duct 2 on the side of the flange 3.

The sealing device 1 also comprises a cylindrical inner ring 7 which is also engaged in the duct 2 on the side of the collar 3, so that the annular portion 6 of the membrane 4 is gripped between the outer face of this ring 7 and the inner face of the duct 2.

In addition, the ring 7 has a radial peripheral annular flange 8, so that a radial annular portion 9 of the membrane 4 surrounding its axial annular portion 6 is taken between the annular peripheral flange 3 of the duct 2 and the annular flange 8 of the ring 7.

The compression forces of the membrane 4 between the duct 2 and the ring 7 and between their flanges are such that the membrane 4 is fixed on the duct 2 in a sealed manner and extends radially around the periphery of one of its ends. .

As shown in figure 1 , the sealing device 1 can be installed on a slab 10 of a flat roof to form a sealed connection of rainwater drainage, for example as follows.

Having formed a hole 11 through the slab 10, a sub-layer 12 of sealing is placed on the slab 10, close to this hole 11.

The duct 2 is substantially axially engaged in the hole 11, so that its collar bears against the slab and / or the underlayer 12. The membrane 4 then extends over this underlayer 12.

Then, an outer sealing layer 13 is placed on the underlayer 12, so that this layer 13 covers the membrane 4 and preferably the collar 8 of the ring 7.

It is then possible to connect a connection duct 14 to the lower end of duct 2.

Referring to the figure 2 it can be seen that there is shown a sealing device 15 which comprises an axial cylindrical duct 16, without flange, an inner ring 17 inserted into an end portion of the duct 16, provided with a radial peripheral annular collar 18 , and a flat radial membrane 19.

As in the previous example, the membrane 19 has an annular portion 20 adjacent to a central opening 21, folded axially and taken between the outer face of the inner ring 17 and the inner face of the duct 16.

The sealing device 15 further comprises an outer ring 22 which surrounds and encloses said end portion of the duct 16 and which has a radial peripheral annular flange 23. A radial annular portion 24 of the membrane 19, adjacent to its annular portion 20, is taken between the annular peripheral flange 18 of the inner ring 17 and the annular flange 23 of the outer ring 22, the annular portion of junction between the annular portion 20 and the radial annular portion 24 passing in front of the corresponding end of the duct 16.

The compression forces of the membrane 19 between the pipe 16 and the inner ring 17 and between the flanges 18 and 23 of the inner and outer rings 17 and 17 are such that the membrane 19 is fixed on the pipe 16 in a sealed manner and extends radially at the periphery of one of its ends.

As shown on the figure 2 , the sealing device 15 can be installed on a slab 25 of a flat roof to form a sealed connection of rainwater drainage. The device 15 is installed on this slab 25 as in the previous example, its membrane extending between an underlayer 26 which this time extends around the collar 23 and an outer layer 27 which covers the collar 18 and the 17. A connection duct 14 can then be connected to the lower end of the duct 16.

As shown on the figure 3 , the sealing device 15 can be installed on a slab 28 of a flat roof to form a sealed chimney connection. Compared to the assembly of the figure 2 the duct 16 this time extends upwards, in front of a passage 29 passing through the slab 28. The membrane 19 is taken between an underlayer 30 and an outer layer 31 which covers the flange 23 of the outer ring 22.

Referring to Figures 4 to 10 an embodiment of the sealing device 15 will now be described as an example.

For this, a press 32 is used which comprises a table 33 on which is installed a vertical cylindrical support 34 which carries on its upper end an annular counter-tool 35 having in its passage an annular groove 36. The press 32 further comprises a tool 37 mounted at the lower end of a piston 38 movable vertically. This tool 37 is constituted by a substantially cylindrical rubber block which has a peripheral annular portion 39 projecting.

In the support 34 is installed a cylindrical abutment support 40 bearing on the table 33 and whose upper face is located below the counter-tool 35.

As shown in figure 4 freely engaged, vertically, a conduit 16 through the counter-tool 35 and around the counter-support 40 until its lower edge bears on the table 33, its upper edge coming in the vicinity of the upper edge counter-tool 35.

An outer ring 22 is engaged vertically between the outer face of the duct 16 and the inner face of the counter-tool 35, its flange 23 bearing against the radial upper face of the counter-tool 35. The inside diameter of the ring 22 is slightly greater than the outside diameter of the duct 16 and the inside diameter of the counter-tool 35 is greater than the outside diameter of the ring 22 so as to constitute an annular clearance 41.

As shown in figure 5 a membrane 19 is placed on the flange 23 of the outer ring 22 in a position such that its opening 21 extends axially to the duct 16.

As shown in figure 9 , the membrane 19 preferably has cuts or radial marks 42 formed in its annular portion 20 surrounding its opening 21.

As shown in figure 6 an inner ring 17 is engaged in the duct 16 by folding the annular portion 20 of the membrane 19 axially, until its flange 18 bears against the flange 23 of the outer ring 22 via the part annular 24 of the membrane 19. The diameter of the inner ring 17 allows its placement without difficulty.

Then, as shown in figure 7 the press 32 is actuated so that the piston 38 moves downwards and engages, playfully, the tool 37 in the inner ring 22 so that it bears against the abutment 40.

Then, as shown in figure 8 continuing the actuation of the press 32, the tool 37 is crushed between the piston 38 and the abutment 40 and is deformed by swelling radially.

In doing so, the tool 37 fills the inner ring 17 and then deforms radially outwardly, compressing them on top of each other, this inner ring 17, the annular portion 20 of the membrane 19, the upper part of the duct 16, the outer ring 22 until the latter bears against the inner face of the counter-tool 35 and that this assembly takes annularly the shape of the groove 36 under the effect of the projecting annular portion 39 of the tool 37 radially corresponding. At the end of the stroke, the front face of the piston 38 surrounding the tool 37 compresses against each other the flange 18, the portion 24 of the membrane 19 and the flange 23.

Then, the press 32 is actuated in the other direction so that the tool 37 resumes its initial shape and disengages it.

The sealing device 15 shown in FIG. figures 2 , 3 and 10 , the diaphragm 19 being firmly attached, in a sealed manner, to the conduit 16.

The sealing device 1 could be manufactured using a suitable press 32.

The sealing devices 1 and 15 may be of materials commonly used in the field of construction and repair of buildings, the membrane being made of a material identical or equivalent to the material constituting the underlayer 12, 26 or 30 and the layer 13, 27 or 31 to form between them a tight connection.

Advantageously, the ducts 2 and 16 could be in a galvanized sheet or a plastic material, for example PVC, the rings 7, 17 and 22 could be in a galvanized sheet and the flexible membranes 4 and 19 could be in a bituminous material in an elastomer, a nonwoven polyester.

According to an exemplary embodiment, the duct 2 and the ring 7 of the sealing device 1 and the duct 16 and the rings 17 and 22 of the sealing device 15 could be made of galvanized sheet and the membranes 4 and 19 could be in one. bituminous material. Such sealing devices are particularly suitable for being associated with sub-layers and sealing layers of bituminous materials, placed by heating these sub-layers and layers at relatively high temperatures.

According to another exemplary embodiment, the sealing device 15 is particularly suitable for presenting a pipe 16 made of a plastics material that is well suited for connection to a plastic connecting pipe. It can advantageously include a flexible membrane 19 of an elastomer or a nonwoven polyester.

As an indication, the length of the sides of the membranes 4 and 19 may be between 4 and 6 times the diameter of the ducts 2 and 16.

The present invention is not limited to the examples described above. Many variations are possible without departing from the scope defined by the appended claims.

Claims (13)

1. Sealing device intended to be installed on a wall, in particular a roof of a building, comprising an axial duct (2, 16), a flexible radial membrane (4, 19) having an opening (5) and of which an annular part (6, 20) adjacent to this opening is folded axially and is held in a sealed manner between an end of the said duct (2, 16) and a mounting ring (7, 17), characterized in that the mounting ring (7, 17) comprises a radial annular peripheral collar (8, 18), such that a radial annular part (9, 24) of the membrane (4, 19) surrounding its axial annular part (6, 20) is held between the radial annular peripheral collar (8, 18) of the mounting ring (7, 17) and a radial peripheral annular collar (3, 23) arranged at the end of the axial duct (2, 16).
2. Device according to Claim 1, characterized in that the said annular part (6, 20) is held between the inner face of the end of the said duct (2, 16) and the outer face of an inner ring (7, 17) engaged in the duct.
3. Device according to either of Claims 1 and 2, characterized in that the end of the duct (2) and the said inner ring (7, 17) have peripheral collars (3, 8) between which the said membrane (4) passes and is held.
4. Device according to either of Claims 2 and 3, characterized in that it comprises an outer ring (22) surrounding the end of the duct (16).
5. Device according to Claim 4, characterized in that the said inner ring (17) and the said outer ring (22) have peripheral collars (18, 23) between which the said membrane (19) passes and is held.
6. Method for manufacturing a sealing device according to one of Claims 1 to 5, comprising a duct (2, 16), characterized in that it consists

   - in forming an opening (5) through a flexible membrane (4, 19), this opening (5) being smaller than the cross section of the said duct (2, 16);

   - in radially placing this flexible membrane (4, 19) on or at a slight distance from an end edge of the duct (2, 16), in a position such that the annular part (6, 2) of the membrane (4, 19) adjacent to its opening extends towards the inside of the duct (2, 16);

   - and in engaging an inner ring (7, 17) in the end of the duct and in deforming this ring radially outwardly, such that the annular part (6, 20) of the membrane (4, 19) passes and is held between the inner face of the end of the said duct (2, 16) and the outer face of this inner ring (7, 17).
7. Method according to Claim 6, characterized in that the outward radial deformation of the inner ring (7, 17) produces an outward radial deformation of the duct (2, 16).
8. Method according to either of Claims 6 and 7, characterized in that it consists, prior to placing the membrane (19), in engaging an outer ring (22) around the end of the duct (16) and radially inwardly deforming this ring (22), such that this outer ring (22) grips around the end of the duct (16).
9. Method according to Claim 8, characterized in that, prior to placing it around the duct (16), the outer ring (22) has an inside diameter at at least equal to the outside diameter of the duct (16).
10. Method according to any one of Claims 6 to 9, characterized in that, prior to placing it in the duct, the inner ring (7, 17) has an outside diameter at least equal to the inside diameter of the duct (2, 16).
11. Method according to any one of Claims 6 to 10, characterized in that it consists, prior to placing it, in forming radial cutouts (42) in the said annular part (6, 20) of the membrane (4, 19).
12. Method according to any one of Claims 6 to 11, characterized in that it consists in producing the said deformation with the aid of a tool (37) which is radially deformable in the direction of a peripheral counter-tool (35).
13. Method according to Claim 12, characterized in that the said tool (37) has a projecting annular part (39) and in that the said peripheral counter-tool (35) has a radially corresponding annular groove (36).

Images