FR2883585A1 - Sealing device for e.g. rain water evacuation, on flat roof, has membrane with annular part, where compression forces of membrane between conduit and one ring and between flanges of two rings are such that membrane is fixed on conduit - 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

Sealing device for the building

  and a method for its manufacture.

  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 present invention aims to replace such lead pipes commonly used.

  The present invention relates to a sealing device for a wall, in particular a building roof, which comprises an axial duct.

  According to the invention, this device further comprises a flexible radial membrane having an opening and whose annular portion adjacent to this opening is mounted sealingly integral with an end of said conduit.

  According to the invention, said annular portion of the membrane is preferably taken between the conduit and a ring. According to the invention, said annular portion is preferably folded axially and is preferably taken between the inner face of the end of said conduit. 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 a sealing device for a wall, in particular a roof, of a building, comprising a duct.

  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.

  The present invention will be better understood with the study of sealing devices described by way of nonlimiting examples and illustrated by the drawing in which: FIG. 1 represents a longitudinal section of a sealing device according to the invention, installed on a roof slab; Figure 2 shows a longitudinal section of a second sealing device according to the invention, installed on a roof slab in a first position; Figure 3 shows a longitudinal section of another sealing device according to the invention, installed on a roof slab in a second position; Figures 4 to 8 show longitudinal sections of a press at different stages of manufacture of the second sealing device; FIG. 9 represents a view from above of a membrane according to the invention; And Figure 10 shows a perspective view of a sealing device according to the invention.

  Referring to FIG. 1, it can be seen that a sealing device 1 is shown 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 portion of conduit 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 4 and the ring 7 and between their flanges are such that the membrane 4 is fixed on the duct 4 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, an underlayer 12 sealing is placed on the slab 10, near this hole 11.

  The duct 2 is substantially axially engaged in the hole 11, so that its flange 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 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 diaphragm 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 16, 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 22 are such that the membrane 19 is fixed on the pipe 4 in a sealed manner and extends radially. on the periphery of one of its extremities.

  As shown in FIG. 2, the sealing device 15 can be installed on a slab 25 of a flat roof to form a sealed connection for evacuating rainwater. 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 in Figure 3, the sealing device 15 can be installed on a slab 28 of a flat roof to form a tight chimney connection. With respect to the assembly of FIG. 2, the duct 16 this time extends upwards, opposite a passage 29 passing through the slab 28. The membrane 19 is sandwiched between an underlayer 30 and an outer layer 31 which covers the flange 23 of the outer ring 22.

  Referring to FIGS. 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 FIG. 4, a duct 16 is engaged freely, vertically, through the counter-tool 35 and around the counter-support 40 until its lower edge bears on the table 33, its upper edge coming from in the vicinity of the upper edge of the 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 FIG. 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 FIG. 9, the membrane 19 preferably has cutouts or radial marks 42 formed in its annular portion 20 surrounding its opening 21.

  As shown in FIG. 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 collar 23 of the outer ring 22. through the annular portion 24 of the diaphragm 19. The diameter of the inner ring 17 allows its placement without difficulty.

  Then, as shown in FIG. 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 counterforce 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 counter-support 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 FIGS. 2, 3 and 10 is then obtained, the membrane 19 being fixed tightly 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 in 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 (14)

  1. Sealing device for the building, comprising an axial duct, characterized in that it further comprises a flexible radial membrane (4, 19) having an opening (5, 21) and whose annular portion (6, 20) adjacent to this opening is mounted sealingly to one end of said conduit (2, 16).   2. Device according to claim 1, characterized in that said annular portion of the membrane is taken between the conduit and a ring 3. Device according to one of claims 1 and 2, characterized in that said annular portion is folded axially and is taken between the inner face of the end of said pipe and the outer face of an inner ring (7, 17) engaged in the conduit.   4. Device according to one of claims 1 and 2, characterized in that the end of the conduit and said ring have peripheral flanges (3, 8) between which said membrane passes and is taken.   5. Device according to one of claims 3 and 4, characterized in that it comprises an outer ring (22) surrounding the end of the conduit.   6. Device according to claim 5, characterized in that said inner ring and said outer ring have peripheral flanges (18, 23) between which said membrane passes and is taken.   7. A method of manufacturing a sealing device for a wall, in particular a roof, of a building, comprising a duct characterized in that it consists in providing an opening through a flexible membrane ( 4,19), this opening being smaller than the section of said duct; radially placing this flexible membrane over or at a short distance from an end edge of the duct, in a position such that the annular portion (6, 20) adjacent to its opening extends towards the inside of the duct; - And to engage an inner ring (7, 17) in the end of the duct and to 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.   8. Method according to claim 7, characterized in that the radially outward deformation of the inner ring generates a radially outward deformation of the conduit.   9. Method according to one of claims 7 and 8, characterized in that it consists, prior to the establishment of the membrane, to engage an outer ring (22) around the end of the conduit and to deform radially inwardly this ring, so that the outer ring encloses the end of the conduit.   10. The method of claim 9, characterized in that prior to its introduction around the pipe, the outer ring (22) has an inner diameter at least equal to the outer diameter of the pipe.   11. Method according to any one of claims 7 to 10, characterized in that, prior to its introduction into the conduit, the inner ring (7, 17) has an outer diameter at most equal to the inner diameter of the conduct.   12. Method according to any one of claims 7 to 11, characterized in that it consists, prior to its introduction, to provide radial cuts (42) in said annular portion of the membrane.   13. Method according to any one of claims 7 to 12, characterized in that it consists in generating said deformation using a tool (37) radially deformable in the direction of a peripheral against-tool (35). ).   14. The method of claim 13, characterized in that said tool (37) has a projecting annular portion (39) and that said peripheral against tool (35) has a radially corresponding annular groove (36).