EP0928869B1 - Locking armature for door, window-door or the same - Google Patents

Abstract

The lock has a control mechanism (3) with automatic return springs (8) for an actuating bar (4), and a lever (21) to hold the bar in its unlocked position when the door is opened. The lever is able to turn inside the lock housing on a pivot (22) lying across the housing's lengthwise axis, moving between an inactive position and an active one in which it interacts with a stop (26) fixed directly or indirectly to the bar (4), opposing the movement of the latter by the springs.

Description

The invention relates to a locking fitting for a sash of door, French window or the like, of the lock, cremone bolt type or other, including at least one latch bolt to elastic return in the locked position and capable of being actuated through an appropriate control mechanism, in particular by a handle or a control button.

The present invention will find its application in the field of the building hardware and concerns, more in particular, locking fittings.

We know, of course, many fittings of lock corresponding to the description above. So, he is frequent that a lock or a lock-bolt comprises, housed in a central housing, a command on which the user can intervene either, by means with a button or a control handle, either using a key element including a barrel. More in particular, such a control mechanism makes it possible to act, very often on a spring return latch bolt in locking position. More specifically, this U-bolt is subjected to the action of a return spring which, when user intervention is relaxed, comes systematically push this latch bolt back into its position locking, so as to cooperate with a keeper. Also, the head of such a latch bolt is configured, of a side, like a cam, so that, when closing the door leaf or the like, equipped with such a lock or cremone bolt, the keeper which is generally provided with the sleeping frame, can ensure the retreat of this latch bolt against the action of elastic return means, without even that there is no need to act on any handle or command button for example. Course once this door completely closed, this latch bolt is positioned at right of the corresponding opening in said strike and in which it engages, pushed back by the return spring cited above.

Furthermore, there are already known means associated with locking fittings whose function is to maintain in an unlocked position and against the action of means of elastic return in the locking position locking, this at least as long as the opening is not closed against its sleeping frame.

Such means are often found in bolts or cremone bolts comprising, housed in a central housing, a control mechanism designed capable of actuating at least one operating rod and comprising, on the one hand, means elastic for automatic return to position locking of these operating rods, as well as means manual control, especially a follower actuated by a control handle, to ensure in particular the unlocking said rod and resetting the means elastic. Such a control mechanism comprises, on the other part, a blocking device, able to maintain in its unlocked position the operating rod after opening of the door leaf, French window or the like. This cremone bolt or bolt lock is, of course, provided with means unlocking device capable of deactivating said locking device when closing the door on the frame and allow the recall to the locking position of said operating rod.

A cremone bolt or lock bolt corresponding to this description has particularly exposed in document FR-2,500,874. In this case the blocking device consists of a locking finger mounted to tilt at a level headrest usually housing the various organs of the cremone bolt or cremone bolt and located at the edge before opening it. This blocking finger is brought to act in the direction of movement of this opening so that at the time to open this one it switches, automatically, in the direction of the frame, under the impulse of a spring, while at the time of closing this opening, the sleeping frame is able to push this locking finger against said spring.

Such a locking finger is extended, at its part internal to the housing containing the control mechanism, by a lever through which it is precisely able maintain the operating rod (s) in their position unlocked, this when opening the door and, therefore, as soon as that this locking finger could be released from the sleeping frame.

In fact, such a solution has the disadvantage that the trigger mechanism is dissociated from a locking member of the cremone bolt or bolt lock. This results in effects not synchronous between the trigger and said organ of locking.

In addition, it seems obvious that such a design makes more complex the control mechanism of this lever or lever-bolt not to mention that the headrest on which is mounted tilting the locking finger corresponds to a specific achievement which results in management of heavy manufacturing and an increase in the number of parts stored.

Ultimately, the present invention, by solving the problem of holding in the unlocked or semi-locked position of the latch bolt during the opening of a door, window or the like, allows to consider, in a process inventive more advanced, to associate with this U-bolt the trigger function not only of its own reminder elastic in locking position, but also as a reminder in the locking position of operating rods, the displacement is assisted by elastic means.

To this end, the invention relates to a locking fitting for door leaf, French window or the like lock, cremone bolt or other, comprising at least one bolt elastic return half-turn in the locked position and able to be actuated through a control mechanism suitable, in particular by a handle or a control button, characterized by the fact that it includes retaining means associated with said latch bolt and provided capable, on the one hand, of keep it in an unlocked or semi-locked position when the door is open and, on the other hand, be deactivated to release said latch bolt by the frame from said door or French window, in particular by a keeper fitted to this sleeping frame and intended for to welcome the aforesaid latch bolt.

In the context of a particular application of this invention, said U-bolt are associated, in particular with level of its internal part to a housing accommodating the control mechanism of the locking fitting, means release, in particular in the form of a control finger, to even to deactivate a locking device provided capable of keep another unlocking device in an unlocked position locking, such as a rod, with return automatic in locking position, after release of the latch bolt by the retaining means at the time of close the window of the door or French window on its sleeping.

We understand, of course, that through this invention, we come to respond, effectively, to the different problems that have been mentioned above.

• la figure 1 est une représentation schématisée et en coupe partielle d'un pêne demi-tour correspondant à une ferrure de verrouillage et auquel sont associés des moyens de retenue conformes à l'invention, ce pêne demi-tour étant muni, en outre, ici, de moyens de déblocage aptes à désactiver un dispositif de blocage agissant sur un autre organe de verrouillage, tel qu'une tringle de manoeuvre ce qui est illustré dans la figure 4 représentant la présente invention dans une application particulière ;
• la figure 2 est une représentation schématisée et en coupe selon II-II de la figure 1 ;
• la figure 3 est une représentation schématisée et en plan d'une lame ressort associée au pêne demi-tour pour rappeler en position active les moyens de retenue dont ce dernier est équipé.
• la figure 4 est une représentation schématisée d'une crémone-serrure à laquelle s'applique l'objet de la présente invention.

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

• Figure 1 is a schematic representation in partial section of a latch bolt corresponding to a locking fitting and which are associated with retaining means according to the invention, this latch bolt being provided, in addition, here , unlocking means capable of deactivating a blocking device acting on another locking member, such as an operating rod, which is illustrated in FIG. 4 representing the present invention in a particular application;
• Figure 2 is a schematic representation in section on II-II of Figure 1;
• Figure 3 is a schematic representation in plan of a leaf spring associated with the latch bolt to return to the active position the retaining means with which the latter is equipped.
• Figure 4 is a schematic representation of a bolt lock to which the object of the present invention applies.

The present invention relates to locking fittings for door leaf, French window or the like lock, cremone bolt or other. Thus, the present invention has been shown in Figure 4 as part of its application to a lock-bolt corresponding to an example of realization, taking into account, of course, that this invention is in no way limited to this exemplary embodiment.

In fact, a locking fitting 1 according to the invention, includes at least one spring return latch 2 locking position and suitable for being actuated through a control mechanism 3 by a handle or a button control (not shown).

According to an exemplary embodiment, such a control mechanism 3 includes a follower 4 provided with a housing 5 for reception of an operating square of said control handle. This follower 4 is, in fact, provided with at least one finger 6 suitable for working on the tail 7 of the latch bolt 2 also pushed back into its locked position under the influence of a return spring 8.

In this regard, elastic return means 9 can also work on follower 4 to bring back systematically this one, and, therefore, the control handle, in a rest position after a command in particular to unlocking said latch bolt 2.

According to the invention, this locking fitting 1 comprises retaining means 10 associated with said latch bolt 2 and provided able, on the one hand, to maintain the latter in a position unlocked or semi-locked when the door, equipped with said locking fitting 1 is open and, on the other hand, to be deactivated, to release said latch bolt 2 at moment to close this opening, in particular by the sleeping frame of the door or the like, especially the striker 11 intended to accommodate said latch bolt 2. This keeper 11 has has been shown schematically in broken lines on the Figure 4 of the attached drawing.

According to an advantageous embodiment, these retaining means 10 are automatic recall in active position under the influence of a return spring 12. They are also integrated directly into the head 13 of said U-bolt 2 and are in the form of a lever 14 housed in a groove 15 formed at the dorsal face 16, opposite to that biased 17, of this head 13 of the latch bolt 2. This groove 15 and, therefore, said lever 14 extend in parallel to the movement of this latch bolt 2. In fact, this lever 14 is pivotally mounted in this groove 15, around a vertical axis 18 perpendicular to the movement of said bolt U-turn 2.

In addition, at the outer edge 19 of this lever 14 is formed a cutout 20 capable of cooperating, in the active position of these retaining means 10, with a retaining rim 21 that usually defines the light provided, i.e. at level of the housing housing the control mechanism 3 of the locking fitting 1, either at the level of the headrest includes the latter, for the passage of the head 13 of said U-bolt 2.

Finally said lever 14 is extended, beyond its axis of pivot 18, by a return 22 on which the return spring 12 capable of repelling, systematically, said retaining means 10 in the active position. This spring of booster 12 is preferably in the form of a leaf spring 23 fixed to the rear of the head 13 of the latch bolt 2. The shape of this leaf spring 23 has been shown in figure 3.

In fact, it will be observed that this return 22 extending the lever 14 beyond its pivot axis 18 also comes to be housed in a groove 24 which extends, in this case, at the rear of the head 13 of the latch bolt 2. The bottom of this groove 24 serves as a stop against which the return 22 is applied under the pulse of the leaf spring 23 corresponding to the position activates retaining means 10.

In addition, to allow these retaining means 10 to fade during the retraction of the latch 2, the outer edge 19 of the lever 14, facing the retaining rim 21, is shaped defined without steps to authorize this maneuver.

Finally, the lever 14 is still designed capable of cooperating with the sleeping frame, more particularly the keeper 11 intended for welcome the latch 2, this at the time of closing the corresponding door leaf or the like for the purpose of release said U-bolt 2. Also, this lever 14 comprises, along its portion 26 remaining in all cases projecting by compared to the front edge of the case (depending on the case compared to the headrest) a control finger 27 in the form of a boss at the level of its outer edge 19.

In fact, this control finger 27 is projecting by relative to the dorsal face 16 of the head 13 of the latch bolt 2 and is therefore oriented towards the frame of the door or the like.

Thus, the mode of operation of such a fitting and therefore from the locked position adopted when the door or analog is closed, consists, if necessary after unlocking of any key element, to activate, by example through a control handle, the follower 4 of the control mechanism 3, this in order to ensure the retraction of the bolt U-turn 2 thus authorizing the user to open the door.

At this time, the user releases his action on said control handle so that the latch bolt 2, under the impulse of the spring 8 tries to regain its position of locking. The restraining means 10 then intervene. which, being kept in the active position by the spring of reminder 12, cooperate with the retaining edge 21 for retain said latch bolt 2 in its unlocked position or semi-locked.

When closing the door on the sleeping frame, the action striker on the biased face 17 of the latch bolt 2 produced, first, the decline of the latter. Then, when this bolt U-turn 2 is able to enter this keeper, this one automatically actuates the control finger 27 of the lever 14 so as to make the retaining means 10 inactive allowing this latch bolt 2 to reach its position fully locked.

It will be observed that within the framework of locking fittings more complex, for example of a lock-bolt such as shown in Figure 4 including, among other things, means of automatic callback in locking rod position of maneuver, it is possible to imagine assigning to such a bolt U-turn 2, provided with retaining means 10 a function complementary, namely ensuring the release of resources 29 provided suitable for holding the operating rods or any other locking member in their unlocked position, against the action of elastic return means, this during as long as the door is kept open.

Thus, by way of example, the tail 7 of the U-bolt 2 can receive a control finger 28 constituting, substantially means of unlocking able to deactivate said blocking means 29 precisely at the time of closing opening it.

In addition, the present invention corresponds to a solution compact associated with the level of a latch bolt and suitable for playing a command role as much as a controller function stroke of this latch bolt. Also, by extrusion, one can give the head 13 of this latch bolt 2 a length higher than normal to allow it to provide higher burglary resistance.

Claims (9)

1. Locking fitting for a leaf of a door, French window or the like, such as a lock, espagnolette-lock or the like, comprising at least one spring-bolt (2) springily restored into a locking position and capable of being actuated through an adequate control mechanism (3), namely a control handle or knob, characterised in that it includes retaining means (10) associated with said spring-bolt (2) and designed so as to be capable, on the one hand, of maintaining the latter in an unlocked or partially locked position when the leaf is open and, on the other hand, of being de-activated to release the spring-bolt (2) by the sash-frame of said door or French window, in particular by a keeper (11) this sash-frame is provided with and which is aimed at receiving said spring-bolt (2).
2. Locking fitting according to claim 1, characterised in that the retaining means (10) are automatically restored into an active position under the action of a restoring spring (12) and directly integrated into the head (13) of the spring-bolt (2).
3. Locking fitting according to any of claims 1 and 2, characterised in that the retaining means (10) are in the form of a lever (14) accommodated in a groove (15) provided for at the level of the back face (16), opposite the bevelled one (17), of the head (13) of the spring-bolt (2), this groove (15) extending in a direction parallel to the displacement of the latter, whereas the lever (14) is mounted in a pivoting way in said groove (15), about an axis (18) perpendicular to the displacement of said spring-bolt (2) and includes, at the level of its outer edge (19), a cut-out (20) capable of co-operating, in the active position of these retaining means (10), with a retaining rim (21).
4. Locking fitting according to claim 3, characterised in that the retaining rim (21) is defined by the slot provided for either at the level of a casing accommodating the control mechanism (3) of the locking fitting (1) or at the level of a face-plate the latter includes for the passing through of the head (13) of said spring-bolt (2).
5. Locking fitting according to claims 2 and 3, characterised in that said lever (14) is extended, beyond its axis of pivotment (18), by a bend (22) on which is capable of acting the restoring spring (12), preferably in the form of a blade spring (23) fixed at the rear of the head (13) of the spring-bolt (2).
6. Locking fitting according to claim 5, characterised in that the bend (22) extending the lever (14) beyond its axis of pivotment (18) accommodates itself in a groove (24) extending at the rear of the head (13) of the spring-bolt (2), the bottom of this groove (24) acting as a stop against which said bend (22) is applied under the action of the restoring spring (12), corresponding to the active position of the retaining means (10).
7. Locking fitting according to any of claims 3 to 6, characterised in that the outer edge (19) of the lever (14), in front of the retaining rim (21), is defined without a step, in order to allow the drawing back of the retaining means (10) during the restoring of the spring-bolt (2) into an unlocked position.
8. Locking fitting according to claims 3 and 4, characterised in that the lever (14) includes, alongside its portion (26) that remains in all cases protruding with respect to the front edge of the casing accommodating said control mechanism (3) or, as the case may be, with respect to a face-plate, a control pawl (27) in the shape of a boss at the level of its outer edge (19), this control pawl (27) being protruding with respect to the back face (16) of the head (13) of the spring-bolt (2), so as to be capable of cooperating with the sash-frame, in particular the keeper (11) provided for receiving the spring-bolt (2) when closing the leaf of the door, French window or the like against this sash-frame.
9. Locking fitting according to any of the preceding claims, characterised in that the spring-bolt (2) provided with retaining means (10) forms means capable of ensuring the unlocking of the locking means (29) provided for maintaining further locking organs, such as operating rods, in their unlocked position against the action of springy restoring means, when the leaf of the door, French window or the like is open.

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