FR3004067A1 - PROFILE, IN PARTICULAR METALLIC, FOR ALLOWING A FIXATION OF A FILM ON A GREENHOUSE STRUCTURE AND A SYSTEM FOR FIXING A FILM ON A GREENHOUSE STRUCTURE COMPRISING SUCH A PROFILE - Google Patents

Abstract

The present invention relates to a profile (7), in particular metal, intended to allow a fixing of a film (2) of coverage on a greenhouse structure (3), the profile (7) extending along a longitudinal axis (X and comprising: - a groove (11) for insertion of a film portion (2), the groove (11) extending along the longitudinal axis (X); - openings (12) in the form of orifices made in the profile (7) so as to allow the attachment of the profile (7) to a profile (7), in particular similar, adjacent and the attachment to a structural element of the greenhouse (3) with fixing means; a cross section of the profile (7) taken in a zone devoid of openings (12) being closed.

Description

Profiled, in particular metal, intended to allow a fixing of a film on a greenhouse structure and a system for fixing a film on a greenhouse structure comprising such a profile 1. The field of the invention The invention relates to the field greenhouses, in particular greenhouses, in particular metal covered with a cover film of flexible material, for example polymer, in particular translucent. The invention is more particularly the profiles, in particular metal, such greenhouses, intended to allow a fixing of a film on the greenhouse structure, as well as the film fixing system on the greenhouse structure comprising such profiles. 2. Solutions of the Prior Art There are known profiles having a groove for receiving the cover film of the greenhouse, intended to cooperate with fixing elements of the film inside the groove such as a lyre and a ring. Profiles are also known comprising not one groove but three identical grooves, arranged parallel to each other, also intended to cooperate with fixing elements of the film. When installing the film, the film is held in the throat using the lyre and the ring. Then the profile with the groove is moved so as to stretch the film to maintain it on the greenhouse structure. These profiles may comprise complementary means in the form of a longitudinal groove intended to cooperate with a profile, for example a T-shaped profile, so as to fix the profile comprising the groove to the greenhouse structure. The tensioning of the film and the tension applied by the film on the sections that hold it are very important mechanical forces applied to the profiles comprising the groove or grooves. However, the profiles of the prior art do not allow to withstand such efforts and may, at the time of tensioning the film or later or under certain climatic loads such as the wind pressure or the weight of the snow, to deform, for example arc-shaped, between two attachment points. 3. OBJECTIVES OF THE INVENTION The invention aims in particular to overcome all or part of these disadvantages of the prior art. More specifically, an object of the invention is to provide a resistant metal section that allows a fixing of a cover film on a greenhouse structure. Another object of the invention is to provide a metal profile which can be easily attached to a similar, adjacent metal profile and to a greenhouse structure. Another object of the invention is to provide a system for fixing a film to a greenhouse structure comprising at least one profile that is resistant to the tension forces applied by the film. 4. SUMMARY OF THE INVENTION All or some of these objectives, as well as others which will appear more clearly later on, are achieved by the invention with the aid of a profile, in particular a metal profile, intended to allow a fixing of a cover film, especially of flexible material, for example polymer or woven, in particular translucent, on a greenhouse structure, the profile extending along a longitudinal axis and comprising: a groove for the insertion of a portion of film the groove extending along the longitudinal axis; apertures in the form of orifices made in the profile so as to allow the attachment of the profile to a profile, in particular similar, adjacent and attachment to a structural element of the greenhouse by means of fixing means; a cross section of the section taken in a zone devoid of openings being closed, in particular by welding.

Thanks to the invention, there is a profile that allows, thanks to the presence of the groove, to fix a film on a greenhouse structure while being adapted, through the openings, to be attached to the structure of greenhouse and also to a similar profile adjacent. In addition, thanks to the invention, the shape of the closed section profile, excluding zones with presence of openings, makes it possible to obtain a reinforced profile, resistant to the tension of the film during and after its tensioning on the structure of the greenhouse, and therefore less subject to deformation than the profiles of the prior art. The groove advantageously extends over the entire length along the longitudinal axis of the profile, so as to allow the fixing of the film over the entire length of the profile.

The openings may have an oblong shape. In this case, the fixing can be performed with different fixing means and / or adapt to different forms of greenhouse structures, without having to modify the profile. An inner portion of the profile is for example hollow at least on a portion of the length of the profile along the longitudinal axis. The profile can be opened at the longitudinal ends. Thus, the profile has a rigidity conferred by the closed cross section (except in areas with openings). However, according to this embodiment, the profile is hollow at least in places, or even in its entire length, so for example to adjust the attachment means to another profile or to the greenhouse structure, for example. This internal cavity of the profile reduces the amount of material required, while the closed periphery of the profile increases the resistance to deformation of the profile, despite the tension of the film. The profile according to the invention may comprise, in cross section, two inner regions, namely a film attachment region having the groove and a region to allow the reception of a connecting splice to an adjacent similar profile. With this aspect of the invention, the profile has in cross section a first portion for attachment to another element, including the attachment to an adjacent profile via a link splice. The profile also comprises a second portion for fixing the film having the recess groove in the profile, towards the inside of the profile. Each portion of the cross section of the profile therefore plays a distinct role.

The profile may have essentially four sides of which one side accommodates the groove and at least two sides of the four sides have openings, at least a portion of the openings being arranged so that an opening on one side faces the other side. a corresponding opening on an opposite side, two corresponding openings forming a pair of openings. According to this feature, the openings are evenly distributed on the sides, in particular two by two, so as to allow the passage of the screw of a bolt through the profile through two corresponding openings. The screw, anchored in the profile, thus makes it possible to fix the profile to an element of the greenhouse structure or, via a link splice, for example, to another profile, in particular similar. The openings may be made in certain portions of the profile, in particular near the longitudinal ends of the profile for attachment to another similar profile and / or for attachment to an element of the greenhouse structure, and possibly in other portions of the profile. profile, remote from the longitudinal ends for attachment to an element, including a hoop, of the greenhouse structure. In this case, the attachment areas of the profile similar to the adjacent profile are generally the areas near the longitudinal ends of the profile. The profile is advantageously made of a steel type material. The invention also relates, in combination with the foregoing, to a system for fixing a film to a greenhouse structure comprising: at least one profile as defined above, a film fixing assembly in the groove of the profile including a lyre and a rod; means for fixing the profile on the greenhouse structure, in particular on the hoops, the fixing means being configured to cooperate with openings, in particular with pairs of openings, of the profile. With the fastening system according to the invention, it is possible to arrange the stretched film on a greenhouse structure using profiles resistant to the tension of the film at the time of tensioning and over time, and also during climatic loads, such as wind, snow, the profile being fixed to the greenhouse structure, including one or more arches of the greenhouse structure. The fastening system may comprise, for example, at least two sections and a link splice, the sections and the splice being configured to allow the partial insertion of the splice at an open longitudinal end of a profile and then at a longitudinal end. open a longitudinally adjacent section, and the attachment of the splice to each of the two adjacent sections by means of fixing means. These fixing means can implement through bolts, for example. The two adjacent sections are then fixed in the longitudinal extension of one another, along the longitudinal axis. The adjacent longitudinal ends of the two sections are in contact with each other or not. In this case, the connecting splice allowing the attachment of two adjacent sections may have a substantially square cross section, for example hollow, the splice being dimensioned so as to fit internally at least a portion of three sides of the profile. The invention further relates, in combination with the foregoing, to a greenhouse structure characterized in that it comprises a plurality of profiles as defined above for fixing a cover film. The invention further provides, in combination with the above, a greenhouse comprising a cover film and a greenhouse structure comprising a plurality of profiles as defined above for fixing said film on the greenhouse structure. 5. List of Figures Other features and advantages of the invention will appear on reading the following description of a preferred embodiment, given by way of indicative and nonlimiting example, and the appended drawings, among which: FIG. 1 schematically and partially illustrates, in perspective, a greenhouse structure comprising a profile according to the invention; FIG 2 shows, seen from the side, in an isolated and schematic manner, two profiles according to the invention, fixed together; FIG. 3 schematically represents, in cross-section along III of FIG. 2, the profile according to the invention; FIG. 4 schematically represents, in cross-section along IV of FIG. 3, the section according to the invention; FIG. 5 schematically and in isolation, in front view, an opening of the section of FIG. 4; FIG. 6 schematically and partially shows, in exploded and perspective view, the profile according to the invention as well as a film forming a greenhouse cover, a lyre and a ring for fixing the film on the profile; FIGS. 7 to 9 schematically represent, in section, the fixation of the film on the profile according to the invention; FIG 10 is a schematic and partial cross sectional view illustrating the attachment of the profile according to the invention to the rest of the greenhouse structure; and FIG. 11 is a diagrammatic and partial longitudinal sectional view of the attachment of FIG. 10. DETAILED DESCRIPTION OF AN EMBODIMENT OF THE INVENTION FIG. 1 partially shows a greenhouse 1 conforming to FIG. The greenhouse structure 3 comprises different arches 4 parallel to one another, resting on vertical posts, and transverse beams 6 forming the gutter, in particular connecting the arches. 4 between them. The greenhouse structure 3 further comprises a plurality of profiles 7, metal in the illustrated embodiment, of longitudinal axis X, attached to the rest of the greenhouse structure 3, according to the invention and configured to allow fixation cover film 2 on the greenhouse structure 3.

These profiles 7, as shown in Figure 1, extend in this example substantially parallel to the transverse beams 6, so as to connect the arches 4 between them. The profiles 7 are fixed to the arches 4 at each crossing point 10 between a profile and a hoop 4. In the example illustrated, the length of a profile 7 is about 6 m, while the distance between two arches 4 is about 2 m, a section 7 being connected to three or four arches 4, depending on the configuration. The profiles 7 are also interconnected, in pairs, along the longitudinal axis X, in the extension of each other, as visible. The profiles 7 are arranged on the structure being substantially parallel to the ground, the transverse beams 6 and substantially perpendicular to the posts 5. The profile 7 according to the invention, extending along the longitudinal axis X comprises, as visible on the Figures 2 to 4, a groove 11 to allow the insertion of a portion of film 2, the groove 11 extending along the longitudinal axis X, that is to say parallel to it. The groove 11 extends over the entire length along the longitudinal axis X of the profile 7, so as to allow the fixing of the film over the entire length of the profile 7. The profile 7 further comprises a plurality of openings 12, some of which are visible in Figures 2 and 4 in particular. These openings 12 are in the form of holes made in the profile 7 so as to allow the attachment of the profile 7 to a similar profile 7 adjacent and also the attachment to a structural element of the greenhouse, including a hoop 4 as indicated more top, using fastening means. According to the principle of the invention, a cross section, as visible in Figure 3 of the profile 7, taken in a zone devoid of openings 12, is closed. In the example shown, the profile was made by profiling a metal sheet and welding to obtain a closed cross section. For the sake of clarity of the drawing, the weld zone is not visible in the figures. It is not beyond the scope of the invention if the closed cross section of the profile 7 is obtained by another method, or if the profile is made directly with a closed cross section, for example by extrusion. Thanks to this shape of the closed cross section profile, the section 7 is strengthened and thus withstands the tension of the film during and after its introduction and its tensioning on the greenhouse structure 3. As visible on the Figure 5, the openings 12 have at least some of them an oblong shape. This can make it possible to carry out fixing with different fixing means and / or to adapt to different forms of greenhouse structure 3 without having to modify the profile 7.

As shown in the figures and in the example shown, the section 7 is internally hollow, the inner portion 13 of the section 7 being devoid of material. The profile 7 is open at the longitudinal ends 14. As can be seen in FIGS. 3 and 4 in particular, the profile 7 comprises in this example, in cross-section, two regions, namely a fixing region of the film 2 comprising the groove 11 and a region to allow the reception of a link splice to an adjacent similar profile 7. Indeed, as visible, the profile 7 has a first portion 15 for attachment to another element, including the attachment to a profile 7 adjacent, for example via a splice link as will be explained below. The profile 7 also comprises a second portion 16 for fixing the film 2 and having the groove 11 recessed in this second portion of the profile 7, towards the inside of the profile 7. Thus, in the illustrated embodiment, about half of the profile 7 consisting in Figure 3 in the left half of a center line M shown in dashed lines in this figure, is configured to allow the attachment of the profile 7 to another similar profile 7 adjacent. The second portion 16, substantially forming a half located in FIG. 3 to the right of the center line M, in this example, houses the groove 11 inscribed inside this second portion 16, as can be seen in FIGS. 4 in particular. As can be seen in FIG. 4, the fastening of the profile 7 to the other profile 7, similar in this example, adjacent, is, in this embodiment, via a splice 17 of connection, of which one section transversal is visible in Figure 4, also shown in dotted side view in Figure 2. The first portion 15 of the section 7 is arranged to accommodate such a splice 17 connecting. The profile 7 has, in the illustrated embodiment, essentially four sides, namely a first side 20, a second side 21, a third side 22 and a fourth side 23, the four sides forming, in this example, in a rectangle. The sides 21 and 23 are opposed to each other and substantially parallel to each other, while the sides 20 and 22 are opposed to each other and substantially parallel at least partially between them.

The first side 20 has the groove 11 as visible. In this example, each of the sides houses at least one opening 12, as can be seen in particular in FIG. 4. It is not beyond the scope of the invention if only two opposite sides of the four sides have openings 12. also in FIG. 4, at least a part of the openings 12 is arranged so that an opening 12 on one side, for example the side 20 or 21, faces a corresponding opening 12 on an opposite side , for example and respectively the side 22 or 23. Two openings 12 correspondingly form a pair of openings 12. Thus, in this example, the openings 12 are distributed on the sides 20 to 23 in particular two by two, so as to allow , as illustrated in Figure 4, the passage of fastening means 24 such as a screw 25 of a bolt 26 through the profile 7, through two corresponding openings 12 of the sides 20 and 22, in this example. The screw 25, anchored in the profile 7, thus makes it possible to fix the profile 7 to another similar section 7 via the link 17. Nuts 27 make it possible to fix the screw 25, outside the profile 7, on either side of the sides 20 and 22 in this example. As can be seen in particular in FIG. 2, the openings 12 are made in certain portions of the profile 7, and in this example in particular, near the longitudinal ends 14 of the profile 7. FIG. 2 shows two sections 7 arranged adjacently , in the extension of one another and fixed together by means of a splice 17 connecting and fastening means 24 such as bolts 26, through, two in the illustrated example. The bolts 26 through this example illustrate the opposite sides 20 and 22 but they could cross the sides 21 and 23 without departing from the scope of the invention. The proximal longitudinal ends 14 of the two sections 7 are, in this example, in contact with each other. It should be noted that, in this example, the link 17 has a square cross section, closed (apart from the presence of openings necessary for the passage of fastening means 24), dimensioned so as to marry internally at least part of three sides 20, 21 and 22 of the profile 7, in this example. The attachment of the cover film 2 to the profile 7 is illustrated in FIGS. 6 to 9. The fixing assembly 29 of the film 2 in the groove of the section 7 comprises a lyre 30 and a ring 31. As illustrated in FIG. , positioning the lyre 30 inside the groove 11 of the profile 7 by interposing between the groove 11 and the lyre 30 the film 2 first not stretched. Then, the rod 31 is added inside the lyre 30, the film 2 being again not stretched. Finally, as shown in FIG. 9, the profile 7 is moved in the direction of the arrow F, visible in this figure, so as to tension the film 2, the latter being held firmly inside the groove 11 of the 7 profiled by the superposition and cooperation between the lyre 30 and the rod 31. The section 7 effectively withstands the tension of the film during tensioning and over time, thanks to the invention.

The attachment of the profile 7 to the rest of the greenhouse structure 3, in particular on one or more hoops 4, is illustrated in FIG. 10. The fastening of the profile 7 to the hoop 4 is effected by means of fixing means comprising a stirrup 40 substantially U-shaped, passing through several, including four, openings 12 of the profile 7 in the base portion of the stirrup 40. The branches 41 of the stirrup 40 are interconnected, near their ends, by means of a clamping member 42 and nuts 43. The clamping member 42 and the stirrup 40 thus allow, as illustrated, to tighten the arch 4 against the profile 7, using the nuts 43 , the attachment formed by the stirrup 40 and the clamping member 42 surrounding the arch 4 and the profile 7. It should be noted that the oblong shape of the openings 12 can in this case be useful for the cooperation with the stirrup 40. The invention is of course not limited to the embodiment that has just been described. In particular, the overall shape of the profile may not be inscribed in a rectangle, but in a square, or any other suitable form.

The number of grooves 11 present in the section 7 may be greater than one. The shape of the openings 12 may not be oblong but circular, or rectangular, or otherwise. The profile 7 may be made of a material different from a metal, for example a composite material. Throughout the description, the terms "including one" and "having one" should be understood as being synonymous respectively with the terms "comprising at least one" and "having at least one" unless otherwise specified. Throughout the description, ranges of values are understood to include terminals, unless the opposite is specified.

Claims (10)

REVENDICATIONS1. A profile (7), in particular metal, for fixing a cover film (2) to a greenhouse structure (3), the profile (7) extending along a longitudinal axis (X) and comprising: a groove (11) for the insertion of a film portion (2), the groove (11) extending along the longitudinal axis (X); apertures (12) in the form of orifices made in the profile (7) so as to allow the profile (7) to be fastened to a profile (7), in particular similar, adjacent and the attachment to a structural element of the greenhouse (3) with fastening means (24); a cross section of the profile (7) taken in a zone devoid of openings (12) being closed. 15 2. Profile (7) according to claim 1, wherein the openings (12) have an oblong shape. 3. Profile (7) according to any one of the preceding claims, characterized in that an inner part of the profile (7) is hollow at least over a portion of the length of the profile (7) along the longitudinal axis ( X), and in that the profile (7) is open at the longitudinal ends (14). 4. Profile (7) according to any one of the preceding claims, characterized in that it comprises, in cross-section, two inner regions, namely a fixing region of the film (2) comprising the groove (11) and a region for receiving a splice (17) connecting to a similar profile (7) adjacent. 5. Profile (7) according to any one of the preceding claims, characterized in that it has essentially four sides (20, 21, 22, 23), one side (20) accommodates the groove (11) and at least two opposite sides of the four sides (20, 21, 22, 23) have openings (12), at least a portion of the openings (12) being arranged such that an opening (12) on a side (20; 22) is opposite a corresponding opening (12) on one opposite side (21; 23), two corresponding openings (12) forming a pair of openings (12). 6. Profile (7) according to any one of the preceding claims, characterized in that it is made of a steel-type material. 7. A system for fixing a film (2) to a greenhouse structure (3) comprising: at least one profile (7) according to any one of the preceding claims, a fixing assembly (29) of the film (2). ) in the groove (11) of the profile (7) comprising in particular a lyre (30) and a rod (31); fastening means (40, 42, 43) of the profile (7) on the greenhouse structure, the fixing means being configured to cooperate with openings (12), in particular with pairs of openings (12), profile (7). 8. Fastening system according to claim 7, characterized in that it comprises at least two sections (7) and a splice (17) of connection, the sections (7) and the splice (17) of connection being configured to allow the partial insertion of the splice (17) at an open longitudinal end (14) of a profile (7), then of an adjacent section (7) and the attachment of the splice (17) to each said adjacent profiles (7) by means of fixing means (24), the two adjacent sections (7) being in the longitudinal extension of one another, along the longitudinal axis (X). 9. Fastening system according to the preceding claim, characterized in that the splice (17) connecting for the attachment of two profiles (7) adjacent has a substantially square cross section, the splice (17) being dimensioned so to fit inwardly at least a portion of three sides (20,21,22) of the profile (7). 10. Fastening system according to claim 8 or 9, characterized in that the fastening means (24) for securing the splice (17) of connection implement through bolts (26).