EP1191174A1 - Security device for shutter hooks - Google Patents

Abstract

The security device comprises a lever (6) and a spring (8) mounted on a support plate (1) positioned above the end (4a) of the hook (2) after its engagement on the angled branch (5a) in order to avoid its being lifted. The lever and spring are arranged to be temporarily manually retracted an order to release the end and to be automatically released under the effect of the introduction of the end.

Description

The invention relates to the technical sector of devices for hooking of opening leaves, in particular shutters.

It is known to use hooks capable of ensuring the maintenance in closed position including shutters, relative to a window with one or several leaves. Generally, these hooks come in the form a straight rod, one end of which forms a closed loop engaged with free articulation in a fixing peg at the level of a part window fixed. The other end of the hook is curved to be engaged in the holes presented by a rack fixed on the shutter in as such. Given the different holes in the rack, it is possible to obtain either the complete closing of the shutter or a half-opening of the latter.

We also know hooks of different design, generally, but not exclusively, used for windows with two hinged leaves opening and closing relative to a fixed central upright. In this case, to maintain the closed position of each of the shutters corresponding to each of the window sashes, the hooks are mounted between the fixed central amount of the window and each of the shutters.
As before, one of the ends of the hooks has a closed loop mounted with free articulation in a stud intended to be fixed, in this case, directly in the thickness of the flaps.
The other end of the hooks is arranged to be engaged on a squared branch that has a support plate fixed to the fixed central upright of the window.

The invention relates more particularly to this latter system of closing of the flaps, i.e. where the hook is articulated to one of the ends, directly on the flap, while the other end is engaged on a squared branch of a support plate fixed on the fixed part of a window.

From this basic conception, the problem that to solve the invention is to avoid any untimely lifting of the end of the hook cooperating with the squared branch of the support plate. In indeed, one cannot exclude such a lifting after engagement of a blade or other thin member at the contiguous positioning of the edges of the shutters in the closed position. More generally, this risk of untimely lifting of the hook end at the plate support exists if one seeks to break open the shutters.

To solve such a problem, it was designed and developed according to the invention a safety device for shutter hooks, the hooks being intended to be mounted between a fixed part of a window and the shutter as as such, one of the ends of the hooks being articulated to said flap, while that the other end is arranged to be engaged on the end of a squared branch presented by a support plate fixed in said part window fixed.

• un levier monté avec capacité d'articulation à l'encontre d'un organe élastique de rappel, dans une chape que présente la platine support ;
• le levier est apte à être positionné au-dessus de l'extrémité des crochets après son engagement sur la branche équerrée pour lui éviter d'être soulevée ;
• le levier est agencé pour être escamoté temporairement, d'une part, sous une action manuelle, en vue de libérer à volonté ladite extrémité et, d'autre part, automatiquement sous l'effet de l'introduction de ladite extrémité ;
• la platine support présente deux branches équerrées disposées côte à côte, en formant une fourche pour le positionnement de deux crochets distincts, l'extrémité du levier, opposée à son articulation, présente une base d'appui symétrique coopérant simultanément avec les deux extrémités du crochet engagées sur les branches de la fourche.

According to the invention, in order to solve the problem posed of avoiding any untimely lifting of the end of the hooks engaged on the branch or branches of the support plate, with the aim of being able to temporarily retract retaining means by manual action to the release of the hooks corresponding to the opening of the shutters or directly under the effect of the engagement of the hooks corresponding to the closing of the shutter, the device comprises:

• a lever mounted with capacity for articulation against an elastic return member, in a yoke that has the support plate;
• the lever is able to be positioned above the end of the hooks after its engagement on the squared branch to prevent it from being lifted;
• the lever is arranged to be temporarily retracted, on the one hand, under manual action, with a view to releasing said end at will and, on the other hand, automatically under the effect of the introduction of said end;
• the support plate has two squared branches arranged side by side, forming a fork for positioning two separate hooks, the end of the lever, opposite its articulation, has a symmetrical support base cooperating simultaneously with the two ends of the hook engaged on the branches of the fork.

To solve the problem posed of being able to act manually on the lever to release the corresponding end of the hook, the lever has, at one of its ends, a digital support part capable of allowing an angular tilting of said lever against the elastic member corresponding to the release of the end of the hook engaged on the squared branch.

Advantageously, the digital support part is constituted by a branch formed in the extension of the lever body and, in a way substantially perpendicular to the latter, being oriented towards outside.

The invention therefore finds a particularly advantageous application in the case of a window with two leaves opening relative to a fixed central upright, a flap being mounted in correspondence with each leaves.

• la figure 1 est une vue en perspective avant montage des principaux éléments du dispositif de sécurité selon l'invention ;
• la figure 2 est une vue en coupe longitudinale du dispositif en position de verrouillage des extrémités correspondantes des crochets ;
• la figure 3 est une vue en coupe considérée selon la ligne 3-3 de la figure 2 ;
• la figure 4 est une vue semblable à la figure 2 montrant le basculement du levier pour libérer l'extrémité du crochet ;
• la figure 5 est une vue à caractère schématique montrant un exemple de montage du dispositif au niveau d'une fenêtre présentant deux vantaux ouvrants par rapport à un montant central fixe.

The invention is set out below in more detail with the aid of the figures of the appended drawings in which:

• Figure 1 is a perspective view before assembly of the main elements of the safety device according to the invention;
• Figure 2 is a longitudinal sectional view of the device in the locking position of the corresponding ends of the hooks;
• Figure 3 is a sectional view taken along line 3-3 of Figure 2;
• Figure 4 is a view similar to Figure 2 showing the tilting of the lever to release the end of the hook;
• Figure 5 is a schematic view showing an example of mounting the device at a window with two opening leaves relative to a fixed central upright.

As indicated and as shown in FIG. 5, the invention finds a particularly advantageous application in the case of a window having two opening leaves (V1) and (V2) and a fixed central upright (M). Next to each of the leaves (V1) and (V2) of the window, are mounted the leaves (B1) and (B2) of the shutter designated as a whole by (V). Without departing from the scope of the invention, the latter applies to any type of window having at least one fan having a fixed part for mounting a hook (C) intended to hold it in position closing the shutter relative to the window.

In this type of closure, the hook (C) is fixed in a way articulated, at one of its ends directly on the flap, while its other end cooperates with a support plate (1) fixed on the central upright (M) or other fixed part of the window. In a way known, the hook (C), made from a straight metal rod in particular (2), has one end in the form of a closed loop (2a) to receive, in a perfectly known manner, a peg (3) having, at its end (3a), any type of arrangement to be fixed in the shutter or another fan. The other end of the rod (2) receives a tip (4) having a head (4a) with a through opening (4a1) for its engagement, in the closed position, on a squared part (5a) of a branch (5) formed perpendicular to the support plate (1). These provisions are perfectly known to a person skilled in the art.

Similarly, in the case of two leaves (V1) and (V2) closing by relative to a central upright (M) (Figure 5), the support plate (1) has two squared hooking branches (5), arranged side by side, forming a fork in order to each receive the hook corresponding to each of the leaves (B1) and (B2) of the shutter (V).

According to a basic characteristic of the invention, the safety device comprises means mounted on the support plate (1) and able to be positioned automatically above the head (4a) of the hook (2) after its engagement on the squared branch (5), in order to avoid any untimely and involuntary lifting of the head (4a) in the closed position.
In the illustrated embodiment, the locking and safety means consist of a lever (6) mounted with articulation capacity in a yoke (1a) formed at the upper end, in particular of the support plate (1). The lever (6) is articulated by means of a transverse axis (7) against an elastic return member in the form for example of a pin spring (8).
The pin spring (8) is determined so as to angularly position the lever (6) above the hooking head (4a) after its engagement on the squared part of the branch (5) in order to prevent any lifting of said head and therefore of the hook assembly (2). The lever (6) has, at one of its ends, a digital support part (6a) capable of allowing angular tilting of the lever against the return spring (8) in order to release, from a correspondingly, the head (4a) of the hook (2) housed on the squared end (5a) of the branch (5).
This digital support part (6a) is for example constituted by a branch formed in the extension of the upper end of the lever (1) at its articulation, in a substantially perpendicular manner. This digital support branch (6a) is oriented towards the outside to allow, under the effect of a digital support, the angular tilting of the lever (6) according to the arrow (F) against the spring recall (7).

In the case where the support plate (1) has, as indicated and illustrated, two attachment branches (5) arranged side by side forming a fork, the end of the lever (6) has, opposite its articulation, a symmetrical support base (6b) able to cooperate simultaneously on the heads (4a) of the hooks (2) fixed in each of the leaves (B1) and (B2) of the flap (V).

The use of the safety device is particularly simple, safe, efficient and rational, and does not change the habits of the user to hooking the flaps. To ensure that the flaps are hooked, it suffice to naturally introduce the head (4a) of the hook (2) into the part square (5a) of the branch (5). Under the effect of the introduction of the head (4a), the lever (6) is automatically retracted according to the arrow (F) against of the return spring (8). After introduction of the head (4a), under the effect of rebound of the return spring (7), the lever (6) is positioned in particular by its base (6b), above the head (4a) of the hook (2) in the tangent position or near-tangency with the latter in order to prohibit any lifting of the whole hook (2).

To unlock the hook (s) (2), simply press on the operating branch (6a) of the lever (6) to retract it, according to the arrow (F), in order to release, in a corresponding manner, the head (4a) from the hook, therefore allowing manual lifting of the hook (2) to release the head (4a) from the squared part (5a) of the branch (5).

The fixing of the support plate (1) on the central upright (M) of the window or other fixed part of the latter, is carried out by any means known and appropriate. Similarly, all of the support plate (1) and the lever (6) can be executed in all dimensions and in all materials.

The advantages are apparent from the description, in particular one underlines and recalls the automatic locking obtained from the hook after introduction of its head at the branch (5) of the support plate avoiding any untimely lifting of the whole of said hook.

Claims (3)

Safety device for shutter hooks, intended to be mounted between a fixed part of a window and the shutter as such, one end of the hooks (2) being articulated to said shutter, while the other end is arranged in (4a) to be engaged on the end (5a) of a squared branch (5) which has a support plate (1) fixed in said fixed part of the window, characterized in that said device comprises: a lever (6) mounted with articulation capacity against an elastic return member (8), in a yoke (1a) that has the support plate (1); the lever (6) is able to be positioned above the end (4a) of the hooks (2) after its engagement on the squared branch (Sa) to prevent it from being lifted; the lever (6) is arranged to be temporarily retracted, on the one hand, under manual action, with a view to freeing said end (4a) at will and, on the other hand, automatically under the effect of the introduction of said end (4a); the support plate has two squared branches (5) arranged side by side, forming a fork for positioning two separate hooks, the end of the lever (6), opposite its articulation, has a support base (6b) symmetrical cooperating simultaneously with the two ends (4a) of the hook engaged on the legs (5) of the fork. Device according to claim 1, characterized in that the lever (6) has, at one of its ends, a digital support part (6a) capable of allowing angular tilting of said lever against the member elastic (8) corresponding to the release of the end (4a) of the hook engaged on the squared branch (5). Device according to claim 2, characterized in that the digital support part (6a) is constituted by a branch formed in the extension of the body of the lever (6) and, in a manner substantially perpendicular to the latter, being oriented towards the outside.

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