EP0882861A1 - Locking device for a sliding wing - Google Patents

Abstract

The locking mechanism comprises an actuating bar (11) implanted preferably in the front upright of the sliding panel and designed to move behind a second bar (12) by means of a control member. The bar has at least one hook-shaped bolt (18) attached to it by its body and passing through an aperture in the second bar (12) so that it projects from the latter and is able to engage with a catch plate on the fixed frame of the door or window. The body of each of the hooks has at least one lug, tongue or other projection (25) to engage with the outer face of the second bar (12). In a preferred variant each hook has a number of projections to support and guide the actuating bar as it moves relative to the fixed second bar.

Description

The invention relates to a locking fitting for opening sliding door, window or the like, comprising at least an operating rod implanted, preferably, at the level of the front upright of this sliding sash and coming move to the back of a headrest at the instigation of a appropriate control mechanism, on this operating rod being fixed the body of at least one hook bolt passing through a light made in the headrest and projecting through relation to the latter so as to cooperate with a keeper fixed in correspondence, in particular on the sleeping frame of said door, window or the like.

The present invention will find its application in the field of the building hardware and concerns, more particularly, the sliding doors, whether they are simple or sliding type with lifting, oscillating-shifting etc ...

In fact, we already know a number of fittings of lock corresponding to the description above. So, such locking fittings applicable to openings sliding, usually include an operating rod often implanted in a groove or in a notch present at the rebate of the upright before this opening sliding and moving at the back of a headrest under the impulse of an appropriate control mechanism. In this regard, such a control mechanism is usually housed in a case also attached to the back of said headrest and therefore also willing to inside the front upright of the sliding sash.

It should also be noted that if such a fitting locking is equipped with several operating rods, these can be caused to move along the same direction or in opposite directions under the impulse of the control mechanism to pass, successively, from the unlocked position to a position of locking and vice versa. So it should be understood that the present invention applies to each of these cases of species.

In the end, on this or these maneuvering rods comes attach the body of one, usually several, bolts hooks coming through a light of suitable size in the headrest, this so as to be protruding with respect to to the latter and, therefore, with a view to cooperating with a keeper which is fixed in accordance with an amount of sleeping frame of said door, window or the like.

In most cases, such locking fittings additionally have a locking mechanism, either directly associated with the control mechanism or in the form of an independent and attached box, there again, at the back of the headrest. Such a mechanism of lock, comprising a key element such as a barrel, has more specifically, to ensure the blocking of the operating rod (s) in the locked position of so as to prevent their unlocking through an action direct exerted on the locking members, in particular on the bolt (s) with hooks, and corresponding to an attempt of break-in.

Nevertheless, such a hook bolt, made integral with a operating rod, constitutes, in itself, a relatively brittle. Indeed, through the flexibility of said rod maneuver, it easily deforms under the effect of a pressure exerted on the hook bolt in one direction perpendicular to the longitudinal axis of this rod maneuver.

Ultimately, under such pressure, this hook bolt can be pushed back through the headrest into the groove where the notching provided at the level of the front upright and housing the various elements of the locking fitting. Such an action, carried out, for example, during an attempt even if it does not systematically allow to ensure the unlocking of the sliding leaf, comes seriously damage said locking fitting.

It will also be observed, that such locking members, in the form of hook bolts are in no way suitable for ensure any maintenance of the operating rod by report to the headrest. Also, it is necessary to arrange everything along and behind this headrest guide means able to exercise this function.

However, due to the travel of the hook bolt for go from the locking position to a unlocking and vice versa, these guide means are noticeably distant from the latter. However, at the very moment of engaging the hook bolt on a strike or during of the reverse movement, the forces retransmitted at the level of the maneuvering rod tend to make it beat or set back from the rear face of the headrest, which is detrimental to the latching of the bolt in the keeper. It results from discomfort in the functioning of this type of fitting lock.

Ultimately, the purpose of the present invention is to remedy to all of the aforementioned drawbacks.

To this end, the invention relates to a locking fitting for sliding door, window or the like, comprising at least one operating rod installed, preferably, at the level of the front amount of this opening sliding and moving from the back of a headrest under the impulse of an appropriate control mechanism, on this operating rod being fixed the body of at least one latch to hook passing through a light in the headrest and presenting salient with respect to the latter so as to cooperate with a strike fixed in correspondence, in particular on the sleeping frame of said door, window or the like, characterized by the fact that said body of the hook bolt, secured to the operating rod, has on one at least of its lateral sides extending parallel to the axis longitudinal of the operating rod, means forming step, such as a ledge, a lug, a nipple, a boss or other, able to rest on the external front face of the headrest and to oppose a relative displacement of this bolt to hook relative to this headrest in one direction perpendicular to the latter.

The advantages of the present invention consist of that through its attachment to the operating rod and means forming a step, such a hook bolt comes to take sandwich the headrest so that not only is it impossible to push this hook bolt through the light in the headrest in the groove or the notch of opening it, but in addition, it results in the maintenance and guiding the operating rod relative to said rod headrest. Ultimately, through the characteristics of the present invention it is possible, if necessary, to overcome additional holding and guiding means which are usually found at the back of said headrest.

• la figure 1 est une vue schématisée et en élévation d'une ferrure de verrouillage conforme à l'invention implantée dans le montant avant d'un ouvrant coulissant représenté partiellement sur cette figure ;
• la figure 2 est une vue de détail de la figure 1 ;
• la figure 3 est une vue en coupe selon III-III de la figure 2 ;
• la figure 4 est une représentation schématisée en élévation et de face du pêne à crochet.

The invention will be better understood on reading the following description relating to the attached drawing in which:

• Figure 1 is a schematic view in elevation of a locking fitting according to the invention located in the front upright of a sliding leaf partially shown in this figure;
• Figure 2 is a detail view of Figure 1;
• Figure 3 is a sectional view along III-III of Figure 2;
• Figure 4 is a schematic elevational and front view of the hook bolt.

As shown in the attached drawing, this invention relates to the field of building hardware. In fact, it is mainly a question of a fitting of lock 1, illustrated schematically in FIG. 1 and intended for a sliding leaf 2, door, window or analog 3.

Thus, such a locking fitting 1 is usually located at the level of the front pillar 4 of this opening sliding 2 and includes one or more locking 5 intended to cooperate with strikes 6 arranged in correspondence on the amount 7 of the sleeping frame 8 of this door, window or the like 3.

Frequently, such a locking fitting 1 takes position in a groove or notch 9 formed at the edge before 10 of this amount before 4 of the sliding sash 2.

In fact, it comprises an operating rod 11 coming move, precisely, in said groove or notch 9, to the back of a headrest 12, this under the impulse of a appropriate control mechanism 13.

As shown as an example in Figure 1, the housing 14 of this control mechanism 13 can be related to the back of the headrest 12. It contains various organs of control, such as a follower capable of being actuated using an operating handle (not shown) to ensure this movement control of the operating rod or rods 11.

As already specified in the introductory part, this invention is in no way limited to a locking fitting corresponding to the only embodiment illustrated in the figure 1.

The control mechanism 13 can be completed by a mechanism lock 15 which is directly associated with it or which, as shown in Figure 1, is in the form of a independent case 16 receiving a key element, such as a barrel 17, through which it is possible to immobilize the or the operating rods, in particular in the position of locking.

In fact, as shown in Figures 1 and 2, the invention relates, more particularly, to a fitting of lock comprising at least one locking member 5 in the form of a hook bolt 18 whose body 19 is returned integral with the operating rod 11 and which comes present salient with respect to the headrest 12 passing to the through an oblong lumen 20 formed therein. The length of this oblong lumen 20 is, of course, determined according to the stroke of the hook bolt 18 for go from the unlocked position to the position of locking.

According to the invention, the body 19 of the hook bolt 18 which, as indicated above, is secured to the rod operation 11, has on at least one of its lateral sides 21, 22 extending parallel to the longitudinal axis of the operating rod 11 therefore to the direction of movement of the latter, means 23 forming a step capable of taking support on the external front face 24 of the headrest 12 and therefore able to oppose a relative movement of this hook bolt 18 relative to said headrest 12, in a direction perpendicular to the latter.

Ultimately, such steps forming a step 23, such as a rim, a lug, a nipple, a boss 25 or the like, have for function of preventing that, under the impulse of a thrust exerted under the hook bolt 18 perpendicularly to the plan of the headrest 12, this hook bolt 18 can be pushed back inside the groove or notch 9 housing the operating rod (s) 11. Now, and under such a thrust, these means forming step 23 come to take support on the external front face 24 of this headrest 12 and prevent any relative displacement in this direction of this hook bolt 18.

In addition, with the operating rod 11 which is rendered integral with the body 19 of the hook bolt 18, these means forming redan 23 come to sandwich said headrest 12. From this way, we avoid, moreover, any beat of this operating rod 11.

To return to the embodiment of these means forming step 23, they occur, advantageously in the frame of the embodiment illustrated in the figures of drawing, in the form of a boss 25, 25A disposed on each of lateral sides 21, 22 of the body 19 of the hook bolt 18, this boss 25, 25A being made in one piece with the hook bolt 18 also obtained by a molding process, stamping and / or any machining. Of course, we can still imagine other embodiments of these means forming a step 23 also suitable for being designed in one piece with the hook bolt 18.

Note, moreover, that in the presence of several bosses 25, 25A these are preferably distributed over the entire height 26 of the body 19 of the hook bolt 18, which has the advantage to further improve the maintenance and guidance of the rod operation 11 relative to the headrest 12.

Of course, the present invention is in no way limited to such an embodiment of the means forming a step 23. These may, in particular, be in the form of a part additional, for example, in the form of a screw, a rivet or analog conferring on the body 19 of the hook bolt 18, at least locally, a section 27 larger than the section transverse 28 of the oblong lumen 20.

As is apparent from the foregoing description, the present invention is able to simply answer a problem encountered for many years in this type of locking fittings for sliding sash. In addition, if she knew how to respond to security imperatives, she in addition, allowed to improve the functioning of this type of locking fitting, especially by making them less noisy.

Claims (5)

Lock fitting for sliding sash (2) of door, window or the like (3) comprising at least one rod operating (11) preferably located at the level of the front upright (4) of this sliding leaf (2) and coming move to the back of a headrest (12) at the instigation of a appropriate control mechanism (13), on this rod maneuver (11) being fixed the body (19) of at least one bolt to hook (18) passing through a light (20) formed in the headrest (12) and projecting from this last so as to cooperate with a keeper (6) fixed in correspondence on the sleeping frame (8) of said door, window or the like (3), characterized in that the body (19) of said hook bolt (18), made integral with the rod operating (11), has on at least one of its sides lateral (21, 22) extending parallel to the longitudinal axis of the operating rod (11), means forming a step (23), such as a flange, a lug, a nipple, a boss (25; 25A) or other, able to rest on the external front face (24) of the headrest (12) and to oppose a displacement of this bolt hook (18) relative to this headrest (12) according to a direction perpendicular to the latter. Lock fitting according to claim 1, characterized in that the step forming means (23) are present in the form of a boss (25, 25A) disposed on each lateral sides (21, 22) of the body (19) of the hook bolt (18). Lock fitting according to claim 2, characterized by the fact that several bosses (25, 25A) constituting the means forming a step (23) are distributed over the entire height of the body (19) of the hook bolt (18) in view improve the support and guidance of the rod operation (11) relative to the headrest (12). Lock fitting according to any one of previous claims, characterized in that the means forming a step (23), such as a flange, a lug, a nipple, a boss or other, are made of material with the hook bolt (18) also obtained by a method of molding, stamping or machining. Lock fitting according to any one of Claims 1 to 3, characterized in that the means forming a step are in the form of a part additional, such as a screw, a rivet or the like, capable of impart to the body (19) of the hook bolt (18), at least locally, a section (27) larger than the section transverse (28) of the light (20) in the headrest (12).

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