EP0693604B1 - Sliding wing lock having device preventing false handling - Google Patents

Abstract

The mechanism consists of a housing (14) containing a moving actuator for a lock, and a stop (1) which prevents incorrect operation of the lock by immobilising the lock in the unlocked position. This comprises a wedge (22) which is released by direct or indirect movement of the door/window frame. There is a support (24) for the wedge, and connectors (25) which co-operate with matching connecting members (26) fixed to the rear wall of the lock housing. The wall has an aperture in it to enable the wedge to co-operate with the moving actuator. <IMAGE>

Description

The invention relates to a locking fitting, in particular for sliding door, window or the like, including a housing inside which is able to stand move at least one movable element such as a slide, actuating at least one locking member, such as a bolt hook, this locking fitting further comprising a anti-misuse device able to immobilize the locking member in the unlocked position and comprising a support structure provided with a locking member subjected to elastic return means in the locked position and able to be brought into the unlocking position, against the action of these elastic return means, under the impulse direct or indirect from the door, window or similar.

The present invention will find its application in the field of the building hardware and, more particularly, in the frame of the locking fittings, in particular applicable to sliding doors.

We already know, especially through document FR-A-2,598,171, a locking fitting for a sliding leaf meeting the description above. Thus, this fitting of locking comprises a housing extending at the rear of a fixing plate and intended to be embedded in a opening on the inside of the upright front corresponding to this sliding leaf. Inside of this case is able to move, vertically, a slide under the control of a control handle precisely accessible at the level of said fixing plate. In reality, this slide operates a hook bolt presenting salient at the edge before the opening of so as to be able to cooperate with a keeper located in concordance on the amount of the sleeping frame.

This locking fitting also includes a anti-tampering device to prevent the bolt from hook cannot be brought back into its position by inattention while the sliding sash is open, so that when closing it, this hook bolt strikes the strike damaging this fitting locking.

More specifically, the locking fitting is, here, equipped a probe that is noticeably protruding from the front edge of the opening so as to be able to cooperate with the amount of frame sleeping when closing the sliding sash. This action of the amount of the sleeping frame on the probe has for function the release of a reminder device elastic capable of locking the hook bolt in its position unlocked.

Consequently, it is only when the probe encounters the amount of the frame and, therefore, that the sliding sash is closed, it is possible to activate the hook bolt via the control handle.

If this solution, described in this document FR-A-2.598.171 solves, advantageously, the problem posed, it is not less linked to a certain complexity of the mechanism that makes up the locking fitting. This complexity translates into a long manufacturing and assembly times and, by Consequently, by a high cost price of this type of fitting locking for sliding sash.

We also know through document FR-A-2,603,931, another elastic return locking device likely to immobilize the hook bolt in its position unlocked until the sliding door is closed on the sleeping frame. This condemnation device is presented as a separate unit which, thanks to means of proper positioning and support, is able to be fixed on the edge before the opening. Specifically, this edge edge of the opening often consists of a profile "U" section open towards the frame upright frame and inside which the hook bolt of the locking fitting. So when closing the door sliding, the keeper, secured to the frame, is housed between the two parallel walls of the U-shaped section profile opening it so that the hook bolt can engage it. As for the locking device, it includes a support held tight in this "U" section profile of the sash sliding. On this support is pivotally mounted a lever conviction, subject to elastic return means in blocking position and which is able to prevent any displacement hook bolt as long as the sliding sash is ajar.

The drawback associated with such a locking device consists in that it requires a specific configuration of the song before opening it to be able to take a position. Moreover, difficulties arise when the keeper, placed on the dormant, is embedded in the latter and not in position protruding as shown in the drawings of this document prior. In fact, under these conditions, this condemnation impedes the closing of the sliding leaf.

In all cases, the characteristics of this device condemnation, in particular, its means of liaison on the opening, are dependent on the configuration of the latter, so standardization in the field is hardly possible.

It is also known from document FR-A-2,700,578, a fitting locking device for a sliding leaf provided with a device anti-misuse. So this locking fitting has a box inside which is able to stand move a slide provided with a hook bolt, this presenting salient compared to the edge before the opening of so as to be able to cooperate with a keeper arranged in concordance on the sleeping frame.

The anti-misuse device is in the form of a probe subjected to elastic return means in projecting position in relation to the front edge of the opening, this being, thus, intended to be pushed back inside the housing of the locking fitting under the impulse of the striker when closing said sliding leaf. In fact, it is only in this remote position of the probe that the slider operating the hook bolt can be actuated. More precisely, the blade of the elastic return means to which is made integral the probe extends, vertically, above the slide so as to immobilize this in the unlocked position as long as the opening is ajar. This blade is, moreover, able to fade at the interior of a notch formed in the upper edge of said slide when, under the impulse of the sleeping frame, the probe is pushed inside the housing of the fitting locking.

Ultimately, as part of this state of the art the case is necessarily extended in its upper part in order to be able to house this anti-misuse device.

The present invention is intended to respond to the various problems described above, this through a device anti-false maneuver that meets all the requirements which have just been recalled, namely: a conception of a very simple, the possibility of positioning it on the casing of the locking fitting fitted to the sash sliding and also the possibility of equipping already existing locking fittings.

Thus, the invention relates to a locking fitting, especially for sliding door, window or analogous, comprising a housing inside which is able to move at least one moving element, such as a slide, actuating at least one locking member, such than a hook bolt, this locking fitting comprising, in addition, an anti-false operation device within to immobilize the locking member in position unlocked and comprising a support structure provided with a locking member subjected to elastic return means in the locking position and able to be brought into the locking position release, against the action of these elastic return means, under the direct or indirect impulse of the sleeping frame of the door, window or the like, said structure supporting comprising connecting means able to cooperate with complementary connecting means integral with the wall rear of the housing, this rear wall further comprising an opening allowing the blocking member to cooperate with the movable element.

The advantages of the present invention are, of course obviously, the possibility of having fittings of locking, in particular, for sliding door a simplified design without being private, for as much, certain safeties to avoid damaging this locking fitting following an operation carried out by error.

• la figure 1 est une vue schématisée d'une ferrure de verrouillage équipant un ouvrant coulissant et susceptible de recevoir un dispositif d'anti-fausse manoeuvre conforme à l'invention ;
• la figure 2 est une vue schématisée de la face arrière du boítier de la ferrure de verrouillage au niveau de laquelle est monté le dispositif d'anti-fausse manoeuvre conforme à l'invention ;
• la figure 3 est une vue schématisée et en coupe partielle longitudinale de la ferrure de verrouillage tel que représenté dans la figure 2 ;
• la figure 4 est une vue analogue à la figure 2 illustrant la disposition de l'organe de blocage lorsque celui-ci est amené en position de déblocage sous l'impulsion du cadre dormant pur libérer l'action sur le pêne à crochet de la ferrure de verrouillage ;
• la figure 5 illustre la face dorsale du dispositif d'anti-fausse manoeuvre selon l'invention ;
• la figure 6 est une vue de gauche de la figure 5 ;
• la figure 7 est une vue analogue à la figure 5, l'organe de blocage y étant cependant, représenté dans sa position de déblocage.

The invention will be better understood from the following description accompanied by drawings illustrating an exemplary embodiment.

• Figure 1 is a schematic view of a locking fitting fitted to a sliding leaf and capable of receiving an anti-false operation device according to the invention;
• Figure 2 is a schematic view of the rear face of the housing of the locking fitting at which is mounted the anti-false operation device according to the invention;
• Figure 3 is a schematic view in partial longitudinal section of the locking fitting as shown in Figure 2;
• Figure 4 is a view similar to Figure 2 illustrating the arrangement of the locking member when the latter is brought into the unlocking position under the impulse of the frame to release the action on the hook bolt of the fitting locking;
• FIG. 5 illustrates the dorsal face of the anti-false operation device according to the invention;
• Figure 6 is a left view of Figure 5;
• Figure 7 is a view similar to Figure 5, the blocking member being however, shown in its unlocked position.

As shown in Figures 2 to 7 of the accompanying drawings, the present invention relates to a fitting of lock 2, provided with an anti-false operation device 1 and intended for a sliding leaf 3 of a door, window or similar, shown schematically in Figure 1. More particularly, the locking fitting 2 comprises at minus a locking member, in this case a hook bolt 4 which is generally salient in relation to the song of the front upright 6 of the sliding leaf 3 so that cooperate with a keeper 7 which is arranged on the upright correspondent 8 of the frame 9.

In fact, as part of the more embodiment particularly shown in the drawings, the hook bolt 4 is operated via a control handle 10 more particularly accessible on the face internal 11 of this amount before 6 of the sliding leaf 3 in which is embedded the locking fitting 2.

In Figures 2 to 4, we distinguish more configuration of this locking fitting 2 which comprises, specifically, an internal fixing plate 12 coming in applies on this internal face 11 of the front upright 6 of the sliding leaf 3. It notably has an opening 13 giving access to said control handle 10. In reality, it is able to move vertically inside a housing 14 arranged at the rear of the fixing plate internal 12 accommodating, in addition, a movable member such as a slide 15 playing, here, the role, also, of a bolt holder 15.

Thus, to control the locking or unlocking of the door, window or the like, the user intervenes on the control handle 10 by communicating to the latter a vertical translation which is reflected by the slide 15 on the hook bolt 4. In this regard, said control handle 10 can act on a slide having an empty run compared to its intervention on the bolt hook 4, this so as to allow the control of a locking device capable of immobilizing this bolt hook, in particular, in its position locking. Ultimately, this locking device has to prevent direct action on this latch bolt hook 4 which would otherwise allow a haddock, provided an ordinary tool, to easily control the opening of the sash sliding 3.

The housing 14 is constituted, according to the embodiment shown, of the internal fixing plate 12 and two parallel wings 16, 17 extending perpendicular to the rear of this internal fixing plate 12. In addition, in view to facilitate the mounting of the sliding parts to the interior of this housing 14, these parallel wings 16, 17 have, at their rear vertical edge 18, a back 19, 20 oriented towards the vertical median plane 21 of this locking fitting 2. Obviously, however, that this case 14 could also be closed completely in its rear part.

As for the anti-false maneuver device 1, this one comprises a blocking member 22 subjected to return means elastic 23 allowing it to be brought back systematically blocking position, configuration in which this blocking 22 is designed so that it can cooperate with a movable member, such as a slide 15, in order to immobilize it and prevent its action on the locking member that constitutes the hook bolt 4.

This anti-false operation device 1 also includes a support structure 24 fitted with said blocking member 22 and provided with connecting means 25 able to cooperate with means complementary links 26, in particular associated with housing 14 of the locking fitting 2.

Preferably, these complementary connecting means 26 fitted to the locking fitting 2, at the level of the wall rear 27 of said housing 14 so that by positioning, on this last, said support structure 24, the locking member 22 cooperates with the movable element 15 through an opening present at this rear wall 27.

Thus, according to the embodiment shown in the different figures, this moving element and everything particularly, the slide or bolt holder 15, comprises on its dorsal face 29, oriented towards the rear wall 27 of the housing 14, a lug 30 on either side of which, in the direction of movement communicated to the movable element 15, is at even to position a locking pin 31 fitted to the member blocking 22 so as to immobilize in a direction of displacement given said movable element 15. In the present case, one seeks, by this means to immobilize the hook bolt 4 in its unlocked position.

As already specified, the pin 30 is accessible to the body of blocking 22 through an opening in the rear wall 27 of the housing 14. In fact, this rear wall 27 is not materialized, in this case, only by returns 19, 20 fitted to the rear vertical edge 18 of the parallel wings 16, 17. As for the locking member 22, in this position of blocking of the hook bolt 4 in the unlocked position, it has its longitudinal axis parallel to the direction of travel of the movable element 15, ie parallel to the longitudinal axis of the housing 14 of the locking fitting 2. In contrast, in its unlocked position, it is pushed back so as to obtain the release of its locking pin 31, laterally, by compared to lug 30 in order to allow the passage of this last and therefore allow the hook bolt 4 to be brought back in its locked position under the action of the organ mobile 15.

More specifically, the erasure of this blocking member 22 is obtained under the impulse of a probe 32 acting against the action of the elastic return means 23, the feeler 32 being, itself, repelled directly or indirectly by the frame 9 when closing the sliding door 3.

Thus, this probe 32 is arranged substantially horizontally and therefore parallel to the sliding direction of the sliding leaf 3. Furthermore, it has one end free 33 protruding from edge 5 of the front pillar 6 of said sliding leaf 3 so as to be able to precisely cooperate with the corresponding amount 8 of the frame 9 when to close the door, window or the like. The end opposite 34 of this probe 32 is, in turn, directly secured to the blocking member 22 arranged vertically, or perpendicular to the axis of the probe 32.

Preferably, the blocking member 22 comprises on the one hand and other of its vertical median plane 35 of the connecting means 36 able to cooperate with the end 34 of the probe 32. Thus, this can extend, as the case may be, to one side or the other relative to this blocking member 22, thus making the reversible anti-misuse device 1 and, therefore, applicable to a sliding leaf closing on the left or right.

According to a preferred embodiment, the return means elastic 23 consist substantially of a mounting elastic of the locking member 22 on the support structure 24. In fact, these consist of an elastic material, whether of the synthetic or metallic type which allows the blocking member 22 to systematically resume, its initial equilibrium position with respect to said structure support 24 after each deformation printed on it by the probe 32.

As for the connection means 25 associated with this structure support 24 and likely to cooperate with means of additional link 26 corresponding to the housing 14 of the locking fitting 2, they may consist of non-retractable means such as gluing, riveting, welding or other or by connecting means of a nature retractable. Such a retractable solution is preferred, while such as limiting the mounting operation of the anti-forgery device operation on a locking fitting 2, at one simple assembly operation requiring no tools and allowing, if necessary, an a posteriori installation.

The embodiment of these connecting means 25 such as represented in the various figures of the attached drawings meets these conditions.

Thus, said connecting means 25 are constituted by two elastic tabs 37, 38 fitted to the ends 39, 40 of the support structure 24 and extending, in parallel, to the member 22, either parallel to the longitudinal axis of the case 14. In addition, these elastic tabs 37, 38 include, each, at least one recess 41 at the edge lateral exterior 42 in which a return 19, 20 fitted to the rear vertical edge 18 of the wings 16, 17 which define the housing 14 and, this, in the conditions that will be exposed now.

Thus, the complementary connecting means 26 are formed, substantially, by return sections 43, 44 delimited on both sides by interruptions 45, 46 said returns 19, 20 obtained by appropriate machining.

Consequently, each of these return sections 43, 44 defines, at its ends 47, 48 a stop against which is supported by the step 49, 50 delimiting, on the and on the other, the recess 41 machined in the elastic tabs 37, 38.

So, during assembly, due to the elastic nature of these legs 37, 38, these are brought together one of the other in such a way as to allow the engagement of return sections 43, 44 in the recesses 41 correspondents. It is appropriate in this connection that said legs elastic bands 37, 38 have, at their free end 51 and at their dorsal side 52, oriented in the direction from the rear wall 27 of the housing 14, access ramps 53 having the function, precisely, of facilitating this engagement return sections 43, 44 in said recesses 41.

As can be seen from the above description, the embodiment more particularly represented in the figures of the attached drawings, presents a number of features that make the device anti-fake particularly interesting maneuver according to the invention. Thus, given that the locking member 22 and the legs 37, 38 are elastic in nature, they can be made up of a same material, just as finally, the support structure 24. Therefore, this anti-false operation device 1 can be from a simple molding process when made in one synthetic material.

Claims (7)

1. Locking fitting, viz. for a sliding leaf of a door, window or the like, comprising a casing (14) inside which is capable of moving at least a mobile member (15), such as a slide block, actuating at least one locking organ (4), such as a hooked bolt, this locking fitting (2) including, in addition, an anti-false-manoeuvre device (1) capable of immobilising the locking organ (4) in unlocked position and including a supporting structure (24) provided with a locking organ (22) subjected to springy means for restoring into locking position and capable of being brought into unlocking position, against the action of these springy restoring means, under the direct or indirect action of the sash-frame (9) of the door, window or the like, characterised in that said supporting structure (24) includes connecting means (25) capable of co-operating with complementary connecting means (26) integral with the rear wall (27) of the casing (14), this rear wall (27) including, in addition, an opening enabling the locking organ (22) to co-operate with the mobile member (15).
2. Locking fitting according to claim 1, characterised in that the mobile member (15), such as a sliding block, includes, on its rear face (29) oriented towards the rear wall (27) of the casing (14), a pawl (30) on both sides of which, in the moving direction imparted to the mobile member (15), a locking pawl (31) which the locking organ (22) is provided with is capable of positioning itself, so as to immobilise said mobile member (15) in a giving moving direction.
3. Locking fitting according to any of claims 1 and 2, characterised in that the anti-false-manoeuvre device includes a follower (32) integral with the locking organ (22) and capable of directly or indirectly co-operating with the sash-frame (9) for pushing the locking organ (22) back into its unlocking position against the action of springy restoring means (23).
4. Locking fitting according to claim 3, characterised in that the longitudinal axis ofthe locking organ (22) is parallel to the longitudinal axis of the casing (14), the axis of the follower (32) being perpendicular to the locking organ (22).
5. Locking fitting according to claim 1, comprising a casing (14) the rear wall (27) of which is materialised by bends (19, 20) oriented towards the longitudinal median plane of the locking fitting (2) and which the rear vertical edge (18) of two parallel vertical wings (16, 17) is provided with, characterised in that the connecting means (25) of the anti-false-manoeuvre device (1) are comprised of two springy feet (37, 38) the ends (39, 40) of the supporting structure (24) are provided with and which extend parallelly to the longitudinal axis of the casing (14), these springy feet (37, 38) each including at least one recess (41) at the level of their outer side edge (42) in which a bend length (43, 44) delimited, on both sides, by interruptions (45, 46) provided for at the level ofthe bends (19, 20) can position itself, these bend lengths (43, 44) forming the complementary connecting means (26).
6. Locking fitting according to claim 5, characterised in that the springy feet (37, 38) include, at the level of their free end (51) and at the level of their rear face (52) oriented towards the rear wall (27) of the casing (14), access ramps (53) for making easier the insertion ofthe bend lengths (43, 44) into the recesses (41).
7. Locking fitting according to claims 1 through 6, characterised in that the anti-false-manoeuvre device (I) defined by the locking organ (22), the supporting structure (24) and the springy feet (37, 38) are made of an elastic material, especially of a synthetic material achieved through a moulding process.

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