WO2014135207A1

WO2014135207A1 - System for attaching a stretched flexible membrane, and method for removal of a corresponding membrane

Info

Publication number: WO2014135207A1
Application number: PCT/EP2013/054500
Authority: WO
Inventors: René Philippe RUHLMANN
Original assignee: Advanced French Ceiling
Priority date: 2013-03-06
Filing date: 2013-03-06
Publication date: 2014-09-12

Abstract

The invention essentially relates to a system (1) for attaching a stretched flexible membrane (2), comprising: a basic profile member (5), made of at least two so-called basic profile member segments (7), each basic profile member segment (7) comprising a longitudinal cavity (8) having at least one shoulder (10) borne by an inner surface of a wall (11) defining the cavity (8); and a grapple (13) attached to the periphery of the flexible membrane (2) and intended for being inserted inside of the cavity (8) of the segments such as to bear on the shoulder (10), characterized in that the basic profile member segments (7) are separated therebetween by a longitudinal space (E), the space (E) allowing communication between the plenum and the part provided with the false ceiling, without perforating the basic profile member, and in that said system also comprises a connecting profile member (14) positioned on an edge of the wall located opposite the wall (11) having the surface which supports the shoulder (10), said connecting profile member (14) connects the basic profile member segments (7) therebetween. The invention also relates to the method for removing the corresponding membrane (2).

Description

FLEXIBLE MEMBRANE FIXING SYSTEM AND METHOD FOR REMOVING MEMBRANE THEREFOR

[01] TECHNICAL FIELD OF THE INVENTION [02] The invention relates to a fastening system of a tensioned flexible membrane and the associated removal method. The invention finds particular advantageous application in the field of so-called "snap-in" false ceilings in which the fixing of the membrane is performed by inserting a harpoon inside a housing of a profile. [03] STATE OF THE ART

[04] It is known that the snap fastening systems comprises a section called in the following document "basic section", this basic section being formed of segments, called "basic profile segments". Each base profile segment comprises a longitudinal housing provided with a shoulder carried by an inner wall of the housing and an edge harness attached to the periphery of the flexible material intended to engage inside the housing of the profile. base by coming to rest on the shoulder. To clean the plenum that corresponds to the space between the membrane and the ceiling, or more generally any surface covered by the membrane, as well as to balance the pressures between the plenum and the rest of the room, it is necessary to ensure a passage of air between the plenum and the rest of the room via the fixing device.

[05] In known systems having segments contiguous longitudinally to each other to traverse the perimeter of a part as described for example in the document FR2597906, it is necessary to punch the faces of the segments to ensure the passage of the 'air. Such a punching operation, the result of which is clearly visible in the figures of document FR2475093, makes it necessary to use a tool for perforating the segments, which makes their manufacture complex, time-consuming and expensive. [06] Also known document CH569163 which describes a fastening system using pads to create a gap between the fastening system and the wall to ensure an air passage over the entire perimeter of the membrane. However, in such a system, the installation and removal of the membrane is relatively complex to achieve.

[07] OBJECT OF THE INVENTION

[08] The invention aims to overcome the disadvantages of existing systems.

[09] For this purpose, the basic profile segments are separated from each other by a longitudinal space allowing communication between the plenum and the room equipped with the false ceiling. The invention also uses a connecting section located on an edge of the wall opposite to the wall carrying the shoulder connecting the profile segments to each other. This profile ensures continuity between the different segments used which may have different lengths and / or cross sections.

[010] In addition, in the invention, the removal of the membrane is easier than in existing systems, insofar as it is possible, thanks to the gaps between the segments, to deposit it by segment or groups of segments. passing a flat tool between the shoulder of a segment and a fin of the harpoon bearing against the shoulder and moving it along the length of the different segments to be deposited.

[011] The invention therefore relates to a fastening system of a stretched flexible membrane comprising:

a base profile formed of at least two segments called base profile segments, each base profile segment comprising a longitudinal housing provided with at least one shoulder carried by an inner face of a wall delimiting the housing;

a harpoon attached to the periphery of the flexible membrane intended to engage inside the housing of the segments to bear on the shoulder, characterized in that the base profile segments are separated from one another by a longitudinal space, the space allowing a communication between the plenum and the part equipped with the false ceiling without punching of the base profile,

- And in that it further comprises a connecting section positioned on an edge of the wall opposite to the wall whose side carries the shoulder, the connecting section connecting the segments of the basic profile.

[012] According to one embodiment, each base profile segment comprises a fixing zone, and in that each base profile segment has a recess between the fastening zone and the housing, this recess being substantially perpendicular to the plane in which extends the attachment area.

[013] In one embodiment, the edges of the base profile segments are perpendicular to the longitudinal direction of a base profile segment regardless of the inclination between two successive basic profile segments.

[014] In one embodiment, the fastening system comprises a holding part formed of two arms movable in rotation relative to each other, each arm being intended to cooperate with a base profile segment. [015] In one embodiment, each arm is recessed at its center to facilitate assembly between the holding member and the base profile segments.

In one embodiment, the base profile comprises a number of spaces between the basic profile segments adapted to the volume of the plenum.

[017] In one embodiment, the spaces are positioned at predefined locations to allow deformation of the connecting section to ensure passage of conduits and / or son through the fastening system. [018] In one embodiment, the basic profile segments have lengths and / or cross sections different from each other.

[019] The invention furthermore relates to a method for removing a membrane stretched out of a fastening system comprising a base profile formed of at least two basic profile segments, each base profile segment comprising a longitudinal housing provided with at least one shoulder carried by an inner face of a wall of the housing, a harpoon fixed to the periphery of the membrane being engaged inside the housing of the profile by bearing on the shoulder, the segments of a basic section being separated from each other by a longitudinal gap, a connecting section positioned on the wall opposite the wall carrying the shoulder connecting the base profile segments to one another,

characterized in that it comprises the following steps:

inserting, at one end of a base profile segment accessible through the space between two successive segments, a flat tool between the shoulder and a fin of the harpoon resting on said shoulder so as to locally disengage the harpoon from the housing a basic profile segment,

moving the tool along the length of the base profile segment so as to disengage the harpoon from the housing over the entire length of the base profile segment, and

- repeat the operation for the number of basic profile segments corresponding to the desired membrane removal length. [020] BRIEF DESCRIPTION OF THE FIGURES

[021] The invention will be better understood on reading the description which follows and on examining the figures that accompany it. These figures are given for illustrative but not limiting of the invention. They show: [022] FIG. 1: a view of a support equipped with the fastening system of a stretched flexible membrane according to the invention; [023] Figure 2: a detailed view of two basic profile segments of the fastening system of Figure 1;

[024] Figure 3a: a cross-sectional view along a plane passing through a segment of Figure 2 along the dashed line A-A; [025] Figure 3b: a cross-sectional view along a plane passing through a segment of Figure 2 along the broken line B-B showing the communication between the plenum and the room;

[026] Figures 4a-4b: views of an alternative embodiment of the fastening system implementing a holding part of two successive segments respectively for two segments forming an angle with respect to each other and for two aligned segments;

[027] FIGS. 5a-5d: detailed views, in particular in perspective, of the holding part shown in an unfolded position and in a folded position [028] FIGS. 6a-6b: sectional views of alternative embodiments of a profile connecting and attaching it to a basic profile segment;

[029] Figures 7a-7b: representations of steps of removing the membrane made using a flat tool such spatula type.

[030] The identical elements, similar, or the like retain the same reference from one figure to another.

[031] DESCRIPTION OF EXAMPLES OF CARRYING OUT THE INVENTION

[032] Figure 1 shows a fastening system 1 of a flexible membrane 2 tensioned installed on a support 3 taking for example the shape of a vertical wall defining a part of a building. This heat-shrinkable or heat-shrinkable membrane 2 has a horizontal orientation in the figures, but could alternatively have a vertical or inclined orientation or any other orientation. [033] The fastening system 1 comprises a base section 5 positioned along the perimeter of the ceiling. It is specified here that the base section 5 is the device to which is fixed the periphery of the membrane 2. This base section 5 is cut into several pieces 7, each piece 7 being called "basic profile segment".

[034] For this purpose, as shown in Figures 2 and 3a, each segment 7 of the base profile comprises a housing 8 provided with at least one shoulder 10 carried by an inner wall 1 1 of the housing 8. In addition, a harpoon 13 is attached to the periphery of the membrane 2. This harpoon 13 is intended to engage inside the housing 8 to bear on the shoulder 10.

[035] In addition, a connecting section 14 is located on an edge of the wall 17 opposite the wall January 1 carrying the shoulder 10. This connecting section 14 connects the segments 7 between them while providing protection of the membrane 2. This profile 14 may be flexible or rigid and has a length dimension of between a few centimeters and several meters.

[036] To allow communication between the plenum and the room equipped with the false ceiling without punching of the base profile, the segments 7 are separated from each other by a longitudinal space E, as shown in Figures 1 and 2. By " longitudinal space "means a space measured along the longitudinal direction D of the segments 7. It is also recalled that the plenum corresponds to the space between the membrane 2 and the ceiling or, more generally, the wall covered by the membrane 2.

[037] More precisely, a segment 7 of basic section comprises the housing 8 delimited by a wall 17 remote from the support 3 and the wall 1 1 close to the support 3 carrying the shoulder 10 connected transversely to each other by a bottom referenced 18 on the figures. This housing 8 is open on the opposite side to the bottom 18 to allow the insertion of the harpoon 13. The wall 17 also has a ramp 19 (see Figure 3a) to facilitate the guiding of the harpoon 13 inside the housing 8, so that the harpoon 13 comes to bear against the shoulder 10. Preferably, the shoulder 10 is formed by the wall 1 1 which has a rim directed towards the inside of the housing 8. [038] Each section segment 7 further comprises a fastening zone 21 by which a segment 7 is fixed to the support 3. This fastening zone 21 is intended to be traversed by fastening means (not shown), for example screw. This fastening zone 21 takes for example the shape of an elongate plate. To facilitate the making of the holes through the fastening zone 21, said fastening zone 21 may comprise a longitudinal groove 22 for guiding the drill bit of a drilling tool.

[039] As visible in Figure 3a in particular, there is also a recess 24 between the fastening zone 21 and the housing 8. This recess 24 extends substantially perpendicular to the plane in which the fastening zone 21 extends and therefore substantially perpendicular to the support 3. Such a recess 24 increases the volume of air exchanged between the plenum and the rest of the room. This recess 24 is in the extension of the bottom 18 of the housing 8. In a variant, the fastening zone 21 extends in a plane substantially perpendicular to the part comprising the housing 8.

[040] Where appropriate, each segment 7 comprises rails 26 for guiding a holding piece 32 detailed below in the case where this type of part is used to perform the assembly of the segments together. These rails 26 are formed here by two L-shaped parts integral with the fastening zone 21. The rail 26 remote from the housing 8 has a first portion perpendicular to the attachment zone directed on the side opposite to the support 3 and a second portion perpendicular to the first portion facing the groove 22. The rail 26 near the housing 8 is formed by the recess 24, a portion of the bottom of the housing 8 and a tongue extending perpendicularly to the bottom in the direction of the groove 22.

[041] The end edges of the segments 7 are cut straight, that is to say that they have a surface perpendicular to the longitudinal direction D of a segment 7 of the basic section, whatever the angle between two successive segments 7. In an exemplary embodiment, the segments 7 are made of metal. Alternatively, the segments 7 could also be made of a plastic material of PVC type for example or in any other suitable material. [042] The harpoon 13 comprises a first fin 28 and a second fin 29 shorter than the first fin 28 forming an angle with the first fin 28. The second fin 29 has at its end a V-shape, one of whose sides is intended to come bearing against the shoulder 10. At the junction between the two fins 28 and 29, the harpoon 13 has a longitudinal nose 30 to facilitate the guiding of the harpoon 13 inside the housing 8 by sliding on the ramp 19. The membrane 2 is fixed, for example by gluing, welding or any other means to ensure cohesion between the elements, at the middle portion of the first fin 28.

[043] Furthermore, according to a particular embodiment, a holding piece 32 formed of two arms 34 and 35 is furthermore used to facilitate the alignment of the different segments 7 and to stiffen the base section 5. These two arms 34, 35 are movable in rotation relative to each other along an axis X located in the plane of the segments 7 and perpendicular to the elongation direction D to allow the installation of the system in the corners of the room. The rotational mobility is obtained by a recess 50 at the junction zone 36 between the two arms 34, 35 or by means of a pivot hinge. For this purpose, each arm 34, 35 is intended to engage inside the rails 26 of the segment 7. Preferably, each arm 34, 35 is recessed at its center to facilitate assembly between the holding member 32 and a segment 7. In the figures, the arms 34 and 35 are substantially symmetrical with respect to each other. However, the arms 34, 35 could alternatively have different dimensions, in particular in length, one of the arms 34, 35 being shorter than the other arm 34, 35.

[044] As shown in Figures 5c and 5d, in one embodiment, the holding member 32 has a length L1 of the order of 120 millimeters, a width L2 of the order of 17 millimeters and a thickness L3 of the order of 3.5 millimeters. In this case, the junction zone 36 has a length L4 of the order of 20 millimeters.

[045] In the preferred embodiment shown in particular in Figures 2 and 3a, the section 14 made of plastic material has a U-shaped section. The gap between the two walls of the profile 14 opposite is less than the thickness of the wall 17, so that the wall 17 is forced into the profile 14.

[046] In another embodiment shown in Figure 6a, the wall 17 has at its edge remote from the bottom 18 of the housing 8 a cross section defining a groove 37. The profile 14 then has a portion 38 of semi-cylindrical shape and an elongated tongue 39 having a thickness greater than the width of the groove 37, so that the tongue 39 can be forcibly engaged within the groove 37 to secure the profile to the segment 7. [047] Alternatively, in another embodiment shown in FIG. 6b, the profile 14 has a J-shaped cross section provided at one of its ends with a portion 40 intended to surround the edge of the wall 17. By "surrounding the edge of the wall 17 "means that the portion 40 has a portion pressed against a portion of the inner face of the wall 17, a portion extending against the field of the wall 17 between the inner face and the outer face of the wall 17, ain if a portion pressed against the outer face of the wall 17. The profile 14 is provided at the opposite end with a hook 41 intended to be fastened by clipping on the outer face of the bottom of the housing 8. For this purpose, the hook 41 comprises a portion extending towards the support 3 substantially perpendicular to the portion pressed against the outer face of the wall 17, and a flange directed towards the housing 8. The outer face of the bottom 18 of the housing comprises a protrusion 43 longitudinal against which the edge of the hook 41 is supported. [048] In the embodiments described above, the connecting section 14 is a profile reported relative to the segments 7. Alternatively, in bi-material segments, the connecting section 14 is integrated for example by overmolding on the wall 17 of a segment 7 then comprising for example recesses or grooves on its surface to facilitate the attachment of the plastic of the profile 14.

[049] Here is described a step of installing the fastening system 1 according to the invention and a step of removing the membrane 2 facilitated by the invention. [050] In a step of installing the fastening system 1 shown in Figures 1 and 2, the segments 7 are fixed to the support 3 by means of fixing means via the fastening zone 21. The number of spaces E between the segments 7 is adapted to the volume of the plenum. Before the step of fixing the segments 7 to the support 3, it is possible but it is not mandatory to position the holding pieces 32 between two successive segments 7 by inserting the arms 34, 35 inside the rails 26 in order to facilitate the alignment of the segments 7. These parts 32 will allow, thanks to their mobility in rotation, to ensure that two segments 7 positioned on both sides of the corner of a room are located at the same level. The connecting section 14 is then pushed into force (or by clipping according to the chosen embodiment) on the edge of the wall 17 to ensure the connection between the different segments 7 as well as the protection of the membrane 2 at its bend. between the portion located in the housing 8 and the portion located outside the housing 8. Note that the use of the connecting section 14 allows the mixing of the segments 7, that is to say that it is possible to use a combination of segments 7 having different lengths and / or cross sections with respect to each other.

[051] The membrane 2 is then heated and the harpoon 13 is threaded inside the housing 8. During this operation, the spout 30 shifts the spear 13 transversely inside the housing 8, so that the fin 29 bears on the shoulder 10 when the membrane 2 is then tensioned during its cooling.

[052] As can be seen in FIG. 3b, such a configuration makes it possible to ensure a passage P of the air represented by arrows 52 between the support 3 and the harpoon 13 at the level of the space E between two successive segments 7 . The invention thus ensures air communication between the plenum and the rest of the room.

[053] In addition, the spaces E are positioned at predefined locations for deformation of the connecting section 14 to allow the passage of ducts and / or son.

[054] As shown in Figures 7a and 7b, to perform the total or partial removal of the membrane 2 tensioned, that is to say disengage the harpoon 13 of the housing 8, a flat tool 44, for example a screwdriver or a spatula, is inserted between the bearing shoulder 10 and the harpoon fin 13 resting on the shoulder 10 at one end of a segment 7 accessible thanks to the spaces E between the segments 7. This insertion of the tool 44 makes it possible to locally disengage the harpoon 13 from the housing 8. The tool 44 is then moved along the arrow 53 along a segment 7 so as to disengage the harpoon 13 of the housing 8 over the entire length of a segment 7. The operation is repeated for the number of segments 7 corresponding to the length of removal of the desired membrane 2.

Claims

1. System for fastening (1) a flexible stretched membrane (2) comprising:

- a base profile (5) formed of at least two segments (7) called base profile segments, each segment (7) of basic profile having a longitudinal housing (8) provided with at least one shoulder (10). ) carried by an inner face of a wall (1 1) delimiting the housing (8),

a harpoon (13) fixed to the periphery of the flexible membrane (2) intended to engage inside the housing (8) of the segments to bear on the shoulder (10),

characterized in that

the segments (7) of the basic profile are separated from each other by a space (E) measured in a longitudinal direction of the segments (7) of the profile, the space (E) allowing a communication between the plenum and the room equipped with false ceiling without punching of the basic profile,

- And in that it further comprises a connecting section (14) positioned on an edge of the wall opposite the wall (1 1) whose side carries the shoulder (10), this connecting section (14). interconnecting the segments (7) of the basic profile.

Fastening system according to claim 1, characterized in that each base profile segment (7) has a fastening zone (21), and in that each segment (7) of the base profile has a recess (24). ) between the fastening zone (21) and the housing (8), this recess (24) being substantially perpendicular to the plane in which the fastening zone (21) extends.

System according to Claim 1 or 2, characterized in that the edges of the base profile segments (7) are perpendicular to the longitudinal direction of a base profile segment (7) irrespective of the inclination. between two segments (7) of successive basic profile.

4. System according to one of claims 1 to 3, characterized in that it comprises a holding part (32) formed of two arms (34, 35). movable in rotation relative to each other, each arm (34, 35) being intended to cooperate with a segment (7) of basic section.

5. System according to claim 4, characterized in that each arm (34, 35) is recessed at its center to facilitate assembly between the retaining piece (32) and the segments (7) of the basic profile.

6. System according to one of claims 1 to 5, characterized in that the base profile (5) has a number of spaces (E) between the segments (7) of basic profile adapted to the volume of the plenum.

7. System according to one of claims 6, characterized in that the spaces (E) are positioned at predefined locations to allow deformation of the connecting section (14) to ensure a passage of conduits and / or son through the fastening system.

8. System according to one of claims 1 to 7, characterized in that the segments (7) of the basic section have lengths and / or cross sections different from each other.

9. A method of removing a tensioned flexible membrane (2) from a fastening system comprising a base profile (5) formed of at least two segments (7) of basic profile, each segment (7) of base profile comprising a housing (8) longitudinally provided with at least one shoulder (10) carried by an inner face of a wall of the housing (8), a harpoon (13) fixed to the periphery of the membrane being engaged to the interior of the housing (8) of the profile being supported on the shoulder (10), the segments (7) of the basic profile being separated from each other by a longitudinal space (E), a connecting section (14) positioned on the wall opposite the wall carrying the shoulder (10) connecting the base profile segments to each other,

characterized in that it comprises the following steps:

inserting, at one end of a segment (7) of basic profile accessible through the space (E) located between two successive segments (7) in a longitudinal direction of said profile segments, a flat tool (44) between the shoulder (10) and a fin (29) of the harpoon (13) bearing on said shoulder (10) so as to locally disengage the harpoon (13) from the housing of a segment (7) of the basic section,

moving the tool (44) along the length of the base profile segment (7) so as to disengage the harpoon (13) from the housing (8) over the entire length of the base profile segment (7), and

- repeat the operation for the number of segments (7) of basic profile corresponding to the desired length of the membrane (2).