FR2777937A1 - ANTI-CRACK ROLLING SHUTTER - Google Patents

Abstract

The invention relates to a roller shutter box which, while serving as a housing for the shutter, allows a reinforced concrete lintel in the shape of an inverted L to be cast on its outer face. This box has at its base, on the outer face, a rim (3) by 5 cm. On its upper part, in alignment with the masonry (2), it is surmounted by a 5 cm rail (8) .A metal mesh (5) made of tor iron connects elements 3 and 8, thus becoming The metal mesh (5) protrudes 15 cm (7) from each end (1) of the box, thus ensuring during the casting of the lintel (6) continuity in the masonry (2) avoiding any risk of This anti-crack box according to the invention is particularly intended for new constructions.

Description

The present invention relates to a shutter box

anti-cracking roller.

  The existing boxes are made of polystyrene

  expanded molded, covered with fiber. They arise in the a-

  exterior lining of the masonry. Exterior coatings

  laughers are projected directly onto the trunk. The con-

  traste of the two materials: concrete blocks or concrete on the one hand

  and polystyrene plus fiber on the other hand, causes very

  Wind a crack on each side of the trunk.

  This anti-cracking box overcomes this drawback.

  Indeed, while serving as a housing for the roller shutter, according to a first characteristic, it allows the implementation of a reinforced concrete lintel having the shape of an inverted L, thus making continuity in the masonry,

  thus avoiding any risk of cracking.

  According to one embodiment, this chest has at

  its outer side has a 5 cm rim and partly high

  inside you a 5 cm smooth. The 5 cm edge when installing the trunk lines up with the masonry. A

  wire mesh made of tor iron connects these two elements

  elements thus becoming integral with the entire trunk.

  This trellis is placed in the middle of the rim and the stringer.

  The accompanying drawings illustrate the invention.

  Figure 1 shows in section the trunk, object of the

vention.

  Figure 2 shows the front of the outer part of the trunk. With reference to these drawings, the box rests at the two ends (1), on the masonry (2), a flange of

  5 cm (3) on the outer base allows positioning the cof-

  fre 5 cm back from the outside alignment of the mason-

nerie (2).

  In the upper part, in the interior alignment of the masonry (2), the chest is surmounted by a 5 cm rail

(8).

  A wire mesh (5) made of tor iron, connects

  elements 3 and 8 thus becoming integral with the assembly.

  To ensure a good grip and form continuity in the masonry (2), the trellis (5) protrudes by 15 cm

(7) on each side of the trunk.

  After positioning the box, a concrete lintel (6) in the shape of an inverted L is poured, making

  continuity in the masonry (2).

  The insulation (9) of the trunk is made on the inside

  with a very good quality material.

  IO This box can be made of sheet metal, PVC or polyes

  ter. Cost and rigidity are the determining elements

selecting.

  This chest, according to the invention, is particularly

intended for new constructions.

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Claims (5)

  1) Anti-cracking roller shutter box characterized in that it has at its base on the outside side a flange (3) of 5 cm which is positioned in the outside alignment masonry (2).   2) Anti-cracking rolling shutter box according to claim 1 characterized in that it partly comprises   high inner side a 5 cm smooth (8).   3) Crack anti-crack shutter according to the re-   vendication 2 characterized in that it comprises a metallic IO trellis (5) made of tor iron which connects the elements 3 and 8.   4) Crack anti-cracking shutter according to the re-   vendication 3 characterized in that the trellis (5) exceeds   of I5 cm (7) on each side of the trunk.   5) Crack anti-cracking shutter according to one   any one of claims 3 and 4, characterized in that   that the trellis (5) is positioned in the middle of the elements 3 and 8.