FR2887576A1 - Safety bar fixation device for e.g. shutter, has bushes disposed along vertexes of triangle and formed from support face of support back plate, where bushes traverse thickness of leaf`s hollow section for cooperating with assembling units - Google Patents

Abstract

The device has a support plate (5) inserted between a safety bar (1) and an inner side of a leaf. A support back plate (6) is disposed from a side of an outer face of the leaf and has bushes (6a) for the fixation of assembling units (7) engaged from the inner face of the leaf. The plate (6) traverses the thickness of a fixation branch (2a) of a square support foot (2). The bushes are formed from a support face of the plate (6) and traverse the thickness of a hollow section of the leaf for cooperating with the assembling units. The bushes are disposed along three vertexes of a triangle.

Description

2887576 1

  The invention relates to the technical field of security bars for leaves including flaps generally having one or more hinged wings.

  This type of bar is well known to a person skilled in the art and its essential function is to reinforce the shutters to prevent their break-in.

  Generally the bar, which can be made of different materials, is of flat cross section to rest on bracketed brackets fixed on the side of the inner face of the uprights. Generally, the bar has, substantially in its central zone, a curved shape allowing the passage of parts covering the leaves at their closure.

  Various arrangements have also been proposed to avoid any inadvertent lifting of this bar. A solution emerges for example from the teaching of patent FR 2,566,825. According to the teaching of this patent, the bracketed brackets at both ends, have specific arrangements cooperating with the axes that the bar presents to require sliding of the latter for its implementation and therefore for its removal. It is therefore not possible to simply raise the bar.

  Whatever the solution chosen, the fixing of the bracketed brackets is done by means of screws fixed in the thickness of the leaf or by means of screws passing through the thickness of the leaf and cooperating with bolts. However, these modes of attachment are not suitable, or all the 2887576 2 less not under conditions that can be considered satisfactory, in the case where the leaf has a hollow internal structure. This is particularly the case of PVC or aluminum leaves having an inner face and a thin outer face braced by stiffness ribs, so as to constitute a honeycomb structure.

  From this state of the art, the problem to be solved by the invention is to ensure the fixing, in a safe and effective manner, a security bar for leaves having a hollow section, without risk of deteriorate the leaf surfaces under tightening force in particular.

  To solve such a problem, it has been designed and developed a device for fixing a security bar for leaves having a hollow section, said bar cooperating with bracketed brackets fixed, by one of their branches, of the side of the inner side of the leaves.

  This device comprises, for each squared support leg: a support plate inserted between the bar and the inner face of the leaf, in juxtaposition of the fixing branch of the tab; a bearing ply disposed on the side of the outer face of the leaf and having arrangements for fastening assembly members engaged from the inner face of the leaf and passing through the thickness of the fastening branch of the squared leg; and the backing plate.

  To solve the problem of ensuring the fixing of the different bracketed brackets, without risk of damaging the inner or outer faces of the leaves, the arrangements are constituted by sleeves formed in overflow of the bearing face of the counterplate and 2887576 3 able to cross the thickness of the hollow section of the leaf to cooperate with the assembly members.

  Advantageously, especially to solve the problem of distributing the clamping forces, the sleeves are arranged along the three corners of a triangle.

  From this basic design, either the sleeves are formed directly overflow of the bearing face of the counter plate, or the sleeves are formed in a reported manner in overflow of the bearing face of the counter plate.

  The invention is described below in more detail with the help of the figures of the accompanying drawings in which: - Figure 1 is a perspective view of a safety bar showing the fixing device according to the invention; certain constituent elements are represented before mounting for one of the bracketed brackets; - Figure 2 is a cross-sectional view showing the fixing of the bar by means of the device according to the invention.

  It will be recalled, in a manner perfectly known to a person skilled in the art, that the safety bar, designated as a whole by (1), is of flat cross section and cooperates with square support legs (2) fixed on the side of the internal face (V1) of the leaves (V).

  It is recalled that the invention finds an application in the case of hollow section leaves generally having an inner face (V 1) and an outer face (V2) braced by stiffness ribs (V3).

  In a manner that is well known to a person skilled in the art, each squared support leg has a securing branch (2a) and a support and guide branch (2b).

  For example, as can be seen from the teaching of the above-mentioned patent FR 2 566 825, the support and guide branches (2b) of the square support tabs at the ends of the bar have recesses able to cooperate with an axis ( 3) having an operating head (4). The bar (1) and the bracketed mounting brackets may for example be aluminum, without excluding other materials.

  According to the invention, each squared support leg (2) cooperates with a support plate (5) acting as wedge, inserted between the bar and the inner face (V1) of the leaf, in juxtaposition of the fixing branch (2a ). The support plate (5) has a width and a height corresponding substantially to that of the squared support branch. In addition, this wedge (5) facilitates the operation and protects the flap against scratches.

  Fixing as such is carried out in combination with a bearing plywood (6) disposed on the side of the outer face (V2) of the leaf. This counterplate (6) has arrangements for fixing fasteners (7) engaged from the internal face (V1) of the leaf and passing through the thickness of the fastening branch (2a) of the support leg ( 2) and the thickness of the support plate (5).

  For this purpose, the counterplate (6) has, directly or in a reported manner, bushings (6a) formed in overflow of its bearing surface. These bushings (6a) pass through the thickness of the hollow section of the leaf, in particular the thickness of the outer (V2) and inner (V1) faces to cooperate with the assembly members (7). Advantageously, the sleeves (6a) are threaded to allow screwing of the members (7) in the form of screws.

  In a preferred embodiment, the sockets (6a) are arranged at the three corners of a triangle.

  Of course, the screws (7) are engaged from the internal face of the leaf in holes (2a1) formed in the thickness of the fastening branch (2a) of the bracket lug (2). These holes (2a1) are also arranged along the three vertices of a triangle in a corresponding manner in positioning the bushings (6a).

  The advantages are apparent from the description.

Claims (2)

6 claims   - 1 device for fixing a safety bar (1) for leaves having a hollow section, said bar (1) cooperating with square brackets (2) fixed on the side of the inner face of the leaves by one of their branches (2a), characterized in that it comprises, for each squared support leg (2): a support plate (5) inserted between the bar (1) and the inner face of the leaf, in juxtaposition of the branch fastening (2a) the tab (2); a bearing plywood (6) arranged on the side of the outer face of the leaf and having arrangements (6a) for fastening assembly members (7) engaged from the internal face of the leaf and passing through the thickness the fixing branch (2a) of the squared tab (2) and the support plate (5).   - 2- Device according to claim 1, characterized in that the arrangements consist of bushings (6a) formed in overflow of the bearing face of the counter plate (6) and able to pass through the thickness of the hollow section of the leaf to cooperate with the assembly members (7).   - 3- Device according to claim 2, characterized in that the sleeves (6a) are arranged along the three corners of a triangle.   - 4- Device according to claim 2, characterized in that the sleeves (6a) 25 are formed directly overflow of the bearing face of the counter plate (6).   Device according to Claim 2, characterized in that the bushes (6a) are formed in an overlying manner in relation to the bearing face of the counterplate (6).