FR2537633A1 - Element for fixing a roofing made from sheets - Google Patents

Abstract

Element for fixing a roofing made from metal sheets or the like, for example zinc. According to the invention, the capping strips 8 and 9 are assembled by means of studs 1, fixed to the roof boards a at 3 with the aid of folded-over tabs 5. Application: elimination of support battens for the capping strips and of welding operations on site.

Description

 The present invention relates to a fastening element intended, in particular1 but not exclusively, to maintain metal sheets or the like intended to seal the roof covering.

 It is known that in large constructions the traditional roofs in tiles or slates are1 at least in part, replaced by metallic sheets, generally made of zinc, the surface oxidation of which provides good protection. These sheets are shaped, usually on site, depending on the dimensions of each roof, in the form of trays whose adjacent raised edges are covered by a joint cover ensuring the tightness of the connections. The section of said joint covers is in the form of an inverted trough.

 Of course, it is necessary to fix the joint covers, in particular because of the slope of the roofs, to ensure adequate support against gravity and the stresses of the wind.

 Fig. 1 schematically represents the fixing technique which is currently used. On the rafters are nailed the battens extending in horizontal directions. On these battens, battens b are nailed, only one of which is shown in Fig.l. These cleats serve as support for the raised edges of the tanks c and as supports for the joint covers d. The joint covers d are nailed at their upper end to the cleats and must be laid out. so that the front part (in the Figure) of a joint cover covers the rear part of the lower joint cover which is in its extension in order to allow a natural drainage of rainwater. On the other hand, it is necessary to hang the constituent parts of a line of joint coverings on each other. However, since the dimensions of the constructions are not standardized, this attachment can only be done on site. In practice, a tongue f is welded in a suitable position.

 Thus, after folding the tongue, the upper element is supported by the lower joint cover over the fixing nail.

 This solution has many drawbacks. The cleats, trapezoidal section, increase the load to be supported by the frame; handling is important, which significantly increases the final cost; there are fire hazards due to the proximity of wooden elements when welding.

 The object of the present invention is to remedy these drawbacks - and to allow ventilated blankets to be produced.

 According to the present invention, the fixing element for cover joint coverings is characterized in that it consists of a stud comprising, at its lower part, means for fixing to the battens and, at its upper part, a tab semi-rigid sliding.

 According to another characteristic of the invention, the fastening element is also integral with stapling means on the sheets forming trays.

Other characteristics and advantages of the invention will become apparent during the following description of a particular embodiment of the invention, given solely by way of nonlimiting example, with reference to the drawings which represent - FIG. . 1, a diagram of fixing the joint covers according to
the prior art - FIG. 2, a fixing element according to the present
invention - FIG. 3, the same element in position on a roof.

 In Fig. 2, the stud 1 is in the form of a parallelepiped, the base of which is integral with a lug 2 having two holes 3 intended to allow the stud to be fixed on the battens, perpendicular to the direction in which they extend. In a groove 4 provided at the upper part of the stud 1 is slidably mounted a tab 5, metallic. In the case where the stud is hollow, the groove is replaced by guide lights. At the base of the pad 1 is also provided a metal plate 6 intended to allow stapling of the trays on the pad.

 The components which have just been described are found in Fig. 3. The studs 6 serve as bracing elements for the tanks 7 constituted by sheets of zinc or any other suitable material whose edges 7a are folded perpendicularly upwards. A single stud is shown in Fig. 3, but it will be understood that each line of joint cover uses a set of fastening elements and that the number of lines of joint cover depends on the surface of the roof. The edges of the plate 6 are also folded along the pad 1 and a new folding makes it possible to fold a part a of the plate 6 'on the edge 7a of the corresponding tray 7. The edge 7a can also be slid inside the fold 6a. The studs 1 are fixed on the planking at appropriate distances.

 The lower joint cover 8 is placed on a stud 1 by its rear end after a double folding of the tongue 5, first flush with the lu-mers 4 to ensure the retention of the tongue in the stud 1 then against the surface superior of it. After fitting the joint cover 8, the free end of the tongue is folded in a hook, inside which is inserted the joint cover 9. The necessary adjustment is given by acting on the distance of the folds of the tongue. In fact, the tongue 5 is immobilized by its two folds against the stud. Thus the stud 1 is immobilized on the planking by screws or nails penetrating into the holes 3. The trays 7 are immobilized by the folds 6a of the plate 6 and the joint cover 9 is held by the tab or the tongue 5, itself immobilized inside the stud 1. The welds of the plate 6 and: di support 2 are carried out in the workshop, the only operations to be carried out on site being the bending of the tongue or tab 5. I1 is not 'elsewhere not necessary that the plate 6 is welded to the pad 1. It can simply be slid under the tab 2 before nailing thereof. Preferably, and in order to allow folding of the plate 5 on the edges of the tanks 7, the length of the plates is approximately three times the height of the flanges 7a.

 In Fig.3 the joint covers 8 and 9 are shown as "torn off" to facilitate a better understanding of the mounting method.

 As in the previous technique, the upper or rear part of a joint cover. any one has, on each of its sides, a chamfer which allows easier assembly, the chamfered part being, after assembly, covered by the lower or front part of the immediately higher joint cover.

 Of course, the edges of the junction covers 8 and 9 can come into contact with the bottom of the tanks 7. They can also have a stapling fold on the folded edges 7a - of the adjacent tanks.

 The present invention also relates to an installation method using fixing elements as well as the covers obtained by this method.

 It goes without saying that many variants can be introduced, in particular by substitution of technically equivalent means, without. depart for this from the scope of the present invention.

Claims (4)

10) Fastening element on the joint cover rods  for conforming cover sheets in adja containers  cents, characterized in that it consists of a stud (1)  whose height is greater than the height of  folds (7a) forming edges of the tanks (7), a tab (5)  can slide at the top of the stud (1),  the stud (1) being secured at its base to a support (2)  perpendicular to the direction of the battens. 20) fastening element according to claim 1, character  laughed in that a plate (6) is secured to the  base of the stud (1) and perpendicular to the support (2), the  length of the plate (6) being greater than three times  the height of the edges (7a) of the tanks (7). 30) Method of laying a cover characterized in that it  consists in placing elements (1) on the battens according to  one of claims 1 or 2, by means of the supports  (2); to mount the trays (7) under the folds (6a) of the  plates (6); place the joint cover (8) on the  stud (1); to fold the tongue to the desired length  so that it makes a hook for the joint cover (9)  place the joint cover (9) inside the hook. 40) Coverage obtained by the process according to the claim  tion 3.