EP0928868A1 - Espagnolette or espagnolette-lock for door, window 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 cremone bolt or door bolt, French window or the like, comprising, housed in a housing central, a control mechanism designed capable of operating at less an operating rod and comprising, on the one hand, elastic means for automatic return to position locking of the operating rod, as well as means manual control, more particularly an actuated follower by a control handle to ensure in particular the unlocking of this operating rod and rearming elastic means and, on the other hand, a device for blocking able to maintain in its unlocked position the operating rod after opening the door leaf, French window or other and unlocking means capable of deactivate said blocking device when closing opening it on the frame to allow the recall in locking position of said operating rod, this cremone bolt or bolt-lock comprising, again, a latch bolt self-retracting in emerging position by through a spring.

The present invention will find its application in the field of the building hardware and concerns, more particularly the so-called locking fittings automatic.

In fact, it will be observed that it is already known to cremone bolts or lock bolts corresponding to the above description. They are intended to facilitate the maneuver of door, patio door or the like locking in the extent that the operating rod (s) are pushed back into their locking position under the influence of means of elastic recall whose action is, precisely, released at at the very moment when the opening is closed on the sleeping frame.

Unlike, when unlocking and opening this opening, the maneuver performed by the user on a handle of command results in bringing back this or these rods from maneuver in their unlocked position and ensure the rearming of the above-mentioned elastic means, while a appropriate blocking device comes simultaneously to maintain in this unlocked position the rod (s) of maneuver against the action of the constituent spring, substantially, the elastic return means.

In the end, such a lock-bolt also includes means of unlocking which are able to deactivate the blocking device when closing the door on the frame to allow the return to the position of locking of this or these operating rods.

A cremone bolt or lock bolt corresponding to this description has most particularly described 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 at the height of the edge before the opening. In fact, this locking finger acts in the direction of movement of this opening so that when it opens it comes tilt, automatically, in the direction of the frame, this under the impulse of a spring, while at the time of close this opening the sleeping frame is able to push back this locking finger against said spring.

It should be noted that such a locking finger is extended, at the level of its internal part to the case closing the control mechanism, by a lever through which it is, precisely, able to maintain the rod (s) of maneuver in their unlocked position, this at the time to open the sash and, as soon as this locking finger has been able be released from the sleeping frame.

In fact, such a solution has the disadvantage that the trigger mechanism which takes the form of an organ external and distinctive of the cremone bolt or cremone bolt, is dissociated from a locking member of this lever or lock-bolt. This often results in synchronous between the moment when this trigger acts and when the locking members are effectively located at the right of their respective keeper on the sleeping frame. Also, it is not not uncommon for either of these locking devices strike the sleeping frame, for example their strike, without committing to it.

However, this risk is all the greater as the rebate play between sash and frame is variable from one door or door window to another. In any case, it is often caused to evolve over time due, for example, to a deformation of the sash on its sleeping frame.

These problems of rabbet games have already brought manufacturers to design hinge fittings for these doors, French windows or the like provided with means three-dimensional adjustments for the specific purpose of power adjust the positioning of this opening relative to its sleeping frame.

Similarly, such adjustment means are often found in level of the locking fittings in order to ensure a good cooperation of the locking members with their keeper.

Therefore, to remedy the problem referred to above, we here again, could have considered equipping the cremone bolt or lock-bolt, as described in the document FR-2.500.874 of adjustment means intended to allow an operator to adjust, with respect to this rebate game, the positioning of the pivoting locking finger at the level of the headrest, so that the triggering, with a view to locking, of the return means elastic bands intended to push the operating rods into their locked position.

However, such a solution would only have made the task more difficult for operators ensuring the mounting of this type of cremone bolt or bolt lock and especially to those who are led to install a door that is equipped with it, precisely because of many adjustments to be made. In addition, this solution was not not able to respond to the risk of a modification of the game rebate in time. In fact, sooner or later, she would obliged these operators or the user to carry out new adjustments which would have proved very difficult to carry out.

Ultimately, the present invention is intended to respond to the above problems by associating with one of the organs for locking the lever or lever-bolt, in particular to the latch bolt, this function of the unlocking. Consequently, the latter cannot intervene for the automatic locking control of the rod (s) maneuver that once said locking member entered cooperation with its keeper arranged on the sleeping frame. That leads to an operation necessarily of the synchronous type.

To this end, the invention relates to a cremone bolt or bolt lock for door, French window or the like comprising, housed in a central box, a control mechanism designed capable of actuate at least one operating rod and comprising, on the one hand, elastic means for the automatic recall in locking position of the operating rod as well as back manual control means to ensure in particular the unlocking of this operating rod and rearming elastic means and, on the other hand, a device for blocking able to maintain in its unlocked position the operating rod after opening the door leaf, French window or other and unlocking means capable of deactivate said blocking device when closing opening it on its sleeping frame to allow the recall in locking position of said operating rod, this cremone bolt or cremone bolt comprising, again, a locking, more particularly, a latch bolt, automatic recall in emerging position via of a spring, characterized in that the device for blocking consists of a lever mounted tilting in the housing around an axis perpendicular to the plane of the latter, between an inactive position and an active position in which it is pushed back automatically under the impulse of means of elastic return when the operating rod is brought in its unlocked position, in order to cooperate with a stop made integral, directly or indirectly, of the operating rod to oppose the displacement of the latter under the impulse of elastic means, said lever being extended, beyond its pivot axis, by a control finger on which are able to act said means release in the form of a directly actuator or indirectly from the latch turn and provided capable of pushing back the lever from its active position to its inactive position when elastic return to the emerging position of this U-bolt, said unlocking means being further supplemented by a retaining member, on the one hand, capable of retaining the latch bolt in its unlocked or semi-locked position when the door is open and, on the other hand, intended to be ordered and therefore deactivated to release said latch bolt by the sleeping frame, especially the strike fitted to this last and intended to accommodate this latch bolt.

The present invention will be better understood on reading the description which follows relating to a mode of realization which is only given as an indicative example and not limiting.

• la figure 1 est une représentation schématisée et partielle du mécanisme de commande de la crémone ou crémone-serrure objet de la présente invention, les éléments ayant été représentés dans une configuration de maintien en position déverrouillée de la ou des tringles de manoeuvre contre l'action des moyens élastiques ;
• la figure 2 est une vue similaire à la figure 1, les éléments étant ici représentés dans leur position correspondant au verrouillage de la ou des tringles de manoeuvre ;
• la figure 3 est une représentation en plan du levier définissant le dispositif de blocage, tandis que la figure 4 est une représentation similaire de la butée d'arrêt ;
• la figure 5 est une représentation schématisée en plan et en coupe partielle du pêne demi-tour recevant, d'une part, l'actionneur et, d'autre part, l'organe de retenue apte à le maintenir en position déverrouillée ou semi-verrouillée ;
• la figure 6 est une représentation schématisée en élévation et en coupe partielle de ce pêne demi-tour.

The understanding of this description will be facilitated by referring to the attached drawings in which:

• Figure 1 is a schematic and partial representation of the control mechanism of the cremone bolt or cremone bolt object of the present invention, the elements having been shown in a configuration for holding the unlocked position or rods against the action elastic means;
• Figure 2 is a view similar to Figure 1, the elements being shown here in their position corresponding to the locking of the operating rod or rods;
• Figure 3 is a plan view of the lever defining the locking device, while Figure 4 is a similar representation of the stopper;
• Figure 5 is a schematic representation in plan and in partial section of the latch bolt receiving, on the one hand, the actuator and, on the other hand, the retaining member capable of holding it in the unlocked or semi-position locked;
• Figure 6 is a schematic representation in elevation and in partial section of this latch bolt.

As shown in Figures 1 and 2 of the accompanying drawings, the present invention relates to a cremone bolt or bolt lock 1 for door, French window or the like, comprising, housed in a central box 2, a control mechanism 3 designed to actuate at least one operating rod 4.

In this regard, it will be observed that a cremone bolt or cremone bolt 1 could be fitted with such a rod 4 extending above and / or below the central box 2, just like it can be provided with two operating rods 4 extending, respectively, above and below the housing 2 and which, through the control mechanism 3, can be caused to move in the same direction or in opposite directions. In the latter case, this control mechanism 3 of the bolt lock 1 operates on one of the operating rods via a motion reverser known to the skilled person.

In addition, this control mechanism 3 can intervene on the or the operating rods 4 either directly or at by means of an easel 6 housed in the housing 2 and connected to its ends via connecting means 7 suitable for this or these operating rods 4.

In fact, the present invention is more in particular, with bolts or bolts and locks, the control mechanism 3 comprises, on the one hand, means elastic 8 for automatic return to position locking of these operating rods 4 and, on the other hand, manual control means 9 to allow the user manually ensure their unlocking and rearming said elastic means 8.

In this regard, this lock-bolt 1 also has a blocking device 10 able to maintain, in their position unlocked, the operating rods 4 after opening of the opening corresponds to the door, French window or the like, as well as unlocking means 11 able to deactivate this blocking device 10 when closing the door on its sleeping frame and therefore authorize the recall locking position of said operating rods 4.

According to a nonlimiting exemplary embodiment of the present invention, said manual control means 9 are constituted by a follower 12 comprising a housing 13 for the reception of an operating square for a control handle, this follower 12 acting on the operating rods 4 in particular via the easel 6 using an organ drive 14 of appropriate configuration.

Advantageously, on this follower 12 can still be mounted a crown 15 provided with a drive finger 16 capable of work on the tail 17 of a latch bolt 18 pushed back into its emerging position under the influence of a return spring 19.

In this regard, elastic return means 20 can also intervene on the follower 12 to bring back systematically this and, therefore, the control handle, in a rest position after a locking operation or unlocking.

Usually, a lock-bolt receives, again, an element to key (not shown in the figures) suitable for intervention, in particular, on a deadbolt.

In fact, according to the invention, the blocking device 10, allowing to hold the rods 4 in their position unlocked against the action of the elastic means 8 after opening of the opening, consists of a lever 21 (visible in Figures 1, 2 or also in Figure 3) mounted tilting in the housing 2 around an axis 22 perpendicular to the plane of the latter, between an inactive position 23, as visible on FIG. 2, and a second active position 24, more particularly shown in Figure 1 and in which it is pushed back, automatically, under the impulse of means of elastic return 25 provided for this purpose in the housing 2.

In fact, this lever 21 is brought into this active position 24 once the operating rod (s) 4 are pushed back into their unlock position, for example, via manual control means 9. Under these conditions, this lever 21 is able to cooperate with a stopper 26 secured directly or through the easel 6 as shown in the figures, at least one operating rods 4 this in order to allow this lever 21 to oppose the movement of this or these latter under the action of elastic means 8.

In fact, as part of the embodiment shown in the drawings and as illustrated, especially in the Figure 4, the stopper 26 is interposed, such a spacer, between the two wings 27, 28 strictly identical defining, in this area of the housing 2, an easel 6 split. This allows the latter to bypass, without creating additional space, other parts of the command 3, in this case here, the tail 17 of the latch bolt 18. Thus, this stopper 26 is made integral, by example by riveting, of said wings 27, 28.

Ultimately, according to the invention said lever 21 is still extended, beyond its pivot axis 22, by a finger command 29 on which are able to act the means of release 11 in the form of an integral actuator 30 directly or indirectly from the latch bolt 18 and provided suitable pushing said lever 21 from its active position 24 into its inactive position 23 during elastic return to position emerging from said latch bolt 18. Note that said means release 11 are further supplemented by a retaining member 31, on the one hand, capable of retaining the latch bolt 18 in a unlocked or semi-unlocked position, like this is visible in Figure 1, when the door is open, and, on the other hand, scheduled to be ordered and, therefore, disabled for release said latch bolt 18 by the frame, while particularly the keeper fitted to the latter and intended for welcome this latch bolt 18.

• en agissant sur le fouillot 12 par l'intermédiaire de la poignée de manoeuvre et partant de la position de verrouillage, l'usager amène la ou les tringles de manoeuvre 4 dans leur position de déverrouillage contre l'action des moyens élastiques 8 ;
• le levier 21 constamment repoussé en directement de la butée d'arrêt 26 sous l'impulsion de ses moyens de rappel élastiques 25 vient basculer dans sa position active 24 lorsque ladite butée d'arrêt 26 vient à le dépasser. A noter que cet angle de pivotement du levier 21 en direction de sa position active 24 peut être limité par l'intermédiaire d'un arrêt quelconque placé dans le boítier ou encore, comme illustré dans la figure 1 directement par la queue 17 du pêne demi-tour 18 sur laquelle vient, alors, prendre appui son doigt de commande 29 ;
• la commande de déverrouillage de la crémone conduit, nécessairement, au recul du pêne demi-tour 18 contre l'action de son ressort de rappel 19, ayant pour conséquence de rendre l'organe de retenue 31 actif, c'est à dire apte à retenir ce pêne demi-tour 18 dans une position déverrouillée ou semi-verrouillée, ceci dès l'instant où l'ouvrant de la porte, porte-fenêtre ou autre, est ouvert ;
• inversement, au moment de refermer cet ouvrant sur son cadre dormant, ayant pour conséquence d'amener le pêne demi-tour 18 au droit de sa gâche, l'organe de retenue 31 repoussé par cette dernière vient libérer le pêne demi-tour 18 qui regagne alors sa position de verrouillage sous l'impulsion de son ressort 19 ;
• intervient, en même temps, l'actionneur 30 monté sur la queue 17 du pêne demi-tour 18 et qui, en agissant sur le doigt de commande 29 du levier 21, ramène celui-ci de sa position active 24 dans sa position inactive 23 ;
• plus rien ne s'opposant, alors, au déplacement de la ou des tringles de manoeuvre 4, celles-ci regagnent leur position de verrouillage sous l'impulsion des moyens élastiques 8.

In short, the operation of this lever is as follows:

• by acting on the follower 12 via the operating handle and starting from the locking position, the user brings the operating rod or rods 4 to their unlocking position against the action of the elastic means 8;
• the lever 21 constantly pushed back directly from the stopper 26 under the impulse of its elastic return means 25 comes to tip into its active position 24 when said stopper 26 comes to exceed it. Note that this pivoting angle of the lever 21 towards its active position 24 can be limited by means of any stop placed in the housing or, as illustrated in Figure 1 directly by the tail 17 of the half bolt -tower 18 on which comes, then, to support its control finger 29;
• the unlocking control of the cremone bolt necessarily leads to the retraction of the latch bolt 18 against the action of its return spring 19, having the consequence of making the retaining member 31 active, that is to say capable of retain this latch bolt 18 in an unlocked or semi-locked position, this from the moment the door leaf, French window or other, is opened;
• conversely, at the time of closing this opening on its dormant frame, having the consequence of bringing the latch bolt 18 to the right of its strike, the retaining member 31 pushed back by the latter comes to release the latch latch 18 which then regains its locking position under the impulse of its spring 19;
• intervenes, at the same time, the actuator 30 mounted on the tail 17 of the latch bolt 18 and which, by acting on the control finger 29 of the lever 21, returns the latter from its active position 24 to its inactive position 23 ;
• there is no longer anything opposing the movement of the operating rod or rods 4, these return to their locking position under the impulse of the elastic means 8.

Note that being able to maintain when the leaf is open, the bolt turns in a semi-locked position, that is to say semi emerging, allows to confer, through the control mechanism 3 a longer stroke important to this latch bolt 18 so that in position fully emerged from the housing, it is able to engage more in the strike corresponding to it on the sleeping frame and to play, also, the role of a deadbolt. Indeed, this U-bolt being capable of being maintained, mechanically, in an intermediate position, when close the window, the strike on the frame is not intended obligation to push back on all its race, this latch bolt in the case, which would otherwise pose a problem.

As visible in the figures, the actuator 30 presents itself, advantageously, in the form of a bead 32 formed at the level of the tail 17 of the latch bolt 18, which bead 32 comes to cooperate with a boss 33 with the softened contours which comprises the control finger 29 at its end 34 intended to take support on this tail 17 of said latch bolt 18.

This softened shape both of the boss 33 and the rounded outline of the bead 32 is intended to facilitate their crossing respective, without a hitch, whether during the order of manual unlocking or during automatic locking of the cremone bolt.

In the same way, the support plane 35 that defines the stop stop 26 does not extend strictly perpendicular to the direction of movement of the operating rod (s) 4 but is, preferably, inclined according to a slope ascending from active position 24 to position inactive 23 of lever 21, allowing the latter to be released without difficulties of this stopper 26 under the simple impulse communicated to him by said latch bolt 18 by elsewhere pushed back by the spring 19. Likewise the free end 36 of lever 21 is devoid of sharp edges likely to hang along this support plane 35.

Finally, it will be noted that, under the impetus exerted by the elastic means 8 on the operating rod or rods 4, in particular on the easel 6, the stopper 26 comes print at the lever 21, in this active position 24, a couple tending to rotate it more around its axis 22 towards this active position 24, which leads, specifically, when the control finger 29 takes hold on the tail 17 of the latch bolt 18. However, this torque, resulting the offset of the vertical axes 38, 37, passing, respectively, by the pivot axis 22 of the lever 21 and the fulcrum between the end 36 of the latter and the stopper 26, is defined, on the one hand, sufficient to ensure the maintenance in unlocked position of the control rod (s) 4 against the action of the elastic means 8 and, on the other hand, also weak as possible to make it easier for the actuator 30 when it must push this lever 21 back into its inactive position 23. Note that the length of the control finger 29, just like the height of the bead 32 are defined so as to allow the latter to communicate to said lever 21 an angle of enough rotation to allow it to fade at the right of the stopper 26, for locking the cremone bolt or lock-bolt.

According to a preferred embodiment, the bead 32 corresponding to the actuator 30 is defined as visible in Figures 1, 2 5 and 6, at a sleeve that we just engage on the tail 17 of the latch bolt 18. Such a sleeve is advantageously symmetrical in relation to its horizontal median plane, configuration which answers the problem of the reversibility of said latch bolt 18, but also to imperative mounting without error of the lever or lever-bolt.

In addition, on either side of this sleeve are defined flats favoring the guide of the tail of the latch 18 between the wings 27, 28 of the easel 6, while contributing, inter alia, the immobilization in rotation of this sleeve.

As for the retaining member 31, provided capable of retaining the bolt U-turn 18 in an unlocked or semi-locked position when the door is open, while being able to be ordered and, therefore, disabled to release said U-bolt 18 by the sleeping frame, preferably the keeper intended to accommodate said latch bolt 18, it is directly integrated into the head 39 of this latch bolt 18 and is present in the form of a lever 40 housed in a groove 41 formed at the dorsal face 42, opposite to that biased 43, of this head 39 of said latch bolt 18. This groove 41 and, therefore, said lever 40 extend, in parallel, when moving it. In fact, this lever 40 is mounted pivotally in this groove 41 around an axis 44 vertical perpendicular to the movement of said latch bolt 18.

In addition, at the outer edge 45 of this lever 40 is formed a cutout 46 capable of cooperating, in the active position of this retaining member 31, with a retaining flange 47 provided at this effect at the housing 2.

Finally, said lever 40 is extended, beyond its axis of pivoting 44, by a return 48 on which a return spring 49 provided capable of repelling this member from retained 31 automatically in an active position. Preferably, this return spring 49 is defined by a elastic blade fixed to the back of the head 39 of the latch bolt 18.

In fact, it will be observed that this return 38 of the lever 40, beyond of its pivot axis 44, also comes to be housed in a groove 50, which extends, in this case, to the rear of said head 39 of the latch bolt 18.

The bottom of this groove 50 serves as a stop against which the return 48 is applied under the impulse of the leaf spring 49, corresponding to the active position of the retaining member 31.

In addition, to allow the latter to fade during recoil of the latch bolt 18, the outer edge 45 of the lever 40, in look with the retaining flange 47, is of defined shape without step to authorize this maneuver.

Finally, the lever 40 is still designed capable of cooperating with the frame sleeps, especially the strike intended for receive the latch 18, when closing opening it, in order to release said latch bolt 18. Also, this lever 40 comprises, along its part 51 remaining in all the salient cases with respect to the front edge of the housing 2, a control finger 52 in the form of a boss at the level of its outer edge 45. In fact, this control finger 52 presents itself protruding from the dorsal face 42 of the head 39 of the bolt U-turn 18 and is oriented, therefore, towards the door frame.

So, when closing the door on this sleeping frame, strike action on the biased face 43 of the latch bolt 18 produced, first of all, the decline of the latter. Then when this latch bolt 18 is able to penetrate this strike, this automatically activates the control finger 52 of the lever 40 so as to make the retaining member 31 inactive allowing this latch bolt 18 to reach its fully locked position. Simultaneously, the actuator 30, integral with the tail 17 of this U-bolt 18, acts on the control finger 29 from which the lever tilts 21 in its inactive position 23. Coming, thus, to erase from in front of the stop 26, this lever 21 releases the bridge 6 and therefore the operating rods 4 which are then able to be called back, automatically, in the locked position, driven by elastic means 8.

Claims (12)

Cremone bolt or bolt lock for door, French window or analogous, comprising, housed in a central box (2), a control mechanism (3) designed capable of actuating at least one operating rod (4) and comprising, on the one hand, means elastic (8) for the automatic return to the locking of the operating rod (4), as well as manual control means (9) to ensure in particular the unlocking of this operating rod (4) and the resetting the elastic means (8) and, on the other hand, a blocking device (10) able to hold in its position unlocked the operating rod (4) after opening the opening of the door, French window or other and means of release (11) able to deactivate said blocking device (10) when closing the sash on its sleeping frame to allow the recall to the locking position of said operating rod (4), this cremone bolt or cremone bolt further comprising a locking member, more particularly a self-retracting latch bolt (18) in locking position by means of a spring (19), characterized in that the locking device (10) consists of a lever (21) pivotally mounted in the housing (2) about an axis (22) perpendicular to the plane of the latter, between an inactive position (23) and an active position (24) in which it is automatically pushed back under the impulse elastic return means (25) when the rod maneuver (4) is brought into its unlocked position, view of cooperating with a stopper (26) made integral, directly or indirectly from the operating rod (4) to oppose the displacement of the latter under the impulse of the elastic means (8), said lever (21) being extended, beyond its pivot axis (22), by a finger control (29) on which are able to act said means release (11) in the form of an actuator (30) integral directly or indirectly from the latch bolt (18) and provided able to push the lever (21) from its active position (24) in its inactive position (23) during the elastic return to position for locking this latch bolt (18), said means for release (11) being further supplemented by a retaining member (31), on the one hand, capable of retaining the latch bolt (18) in its unlocked or semi-locked position when the opening is open and, on the other hand, to be ordered and therefore deactivated to release said latch bolt (18) by the sleeping frame, especially the strike fitted to this last and intended to accommodate this U-bolt (18). Cremone bolt or bolt lock according to claim 1, the control mechanism (3) is designed capable of actuating at least an operating rod (4) via an easel (6) housed in the housing (2), characterized in that the easel (6) is split in shape and is defined by two identical wings (27, 28) between which the stopper (26), like a spacer, this stopper (26) being made integral with these wings (27, 28), in particular by riveting or the like. Cremone bolt or locking bolt according to any one of previous claims, characterized in that the actuator (30) is in the form of a bead (32) formed at the level of the tail (17) of the latch bolt (18), while the control finger (29) of the lever (21) is provided able, in the active position (24) of the latter, to bear on said tail (17) of the latch bolt (18), in particular under the impulse of the elastic return means (25) acting on said lever (21). Cremone bolt or locking bolt according to any one of previous claims, characterized in that the stop (26) comprises a support plane (35) with which is brought to cooperate the end (36) of the lever (21) in active position (24) of the latter, this support plane (35) being inclined in an ascending slope from the active position (24) to the inactive position (23) of said lever (21). Cremone bolt or locking bolt according to any one of previous claims, characterized in that between the vertical axes (38, 37) passing, respectively, through the axis pivot (22) of the lever (21) and the fulcrum between the end (36) of the latter and the stopper (26) when the lever (21) is in the active position (24), respect between them an offset leading the stopper (26) to be printed at lever (21), under the impulse exerted by the elastic means (8) on the operating rod or rods (4), a couple having tendency to pivot said lever (21) about its axis (22) towards said active position (24). Cremone bolt or bolt lock according to claims 2 and 3, characterized in that the bead (32) corresponding to the actuator (30) is defined at the level of a sleeve engaged on the tail (17) of the latch bolt (18), this sleeve being of form symmetrical about its horizontal median plane and comprising, on both sides, flats provided suitable for guiding the tail (17) of the latch bolt (18) between the wings (27, 28) of the easel (6) while contributing to immobilizing said sleeve in rotation. Cremone bolt or locking bolt according to any one of previous claims, characterized in that the retaining member (31) is directly integrated into the head (37) of the latch bolt (18) and is in the form of a lever (40) housed in a groove (41) formed at the level of the face dorsal (42), opposite to that biased (43), of this head (39) of the latch bolt (18), this groove (41) extending parallel to the displacement of the latter, while the lever (40) is pivotally mounted in said groove (41) around an axis (44) perpendicular to the movement of said latch bolt (18) and has, at its outer edge (45), a cutout (46) capable of cooperating in the active position of the retainer (31) with a retainer flange (47) provided for this purpose at the housing (2). Cremone bolt or locking bolt according to claim 7, characterized in that the retaining member (31) is recalled, automatically, in active position, under the influence a return spring (49). Cremone bolt or bolt lock according to claims 7 and 8, characterized in that the lever (40) is extended beyond of its pivot axis (44) by a return (48) on which is capable of acting on the return spring (49), preferably in the form of a leaf spring fixed to the back of the head (39) of the U-bolt (18). Cremone bolt or locking bolt according to claim 9, characterized in that the return (48) extending the lever (40) beyond its pivot axis (44) comes lodge in a groove (50) extend to the back of the head (39) of the latch bolt (18), the bottom of this groove (50) serving as a stop against which said return (48) is applied under the impulse of the return spring (49) corresponding to the active position of the retaining member (31). Cremone bolt or locking bolt according to any one of Claims 7 to 10, characterized in that the edge external (45) of the lever (40) opposite the retaining rim (47) in the housing (2) is defined without steps to allow this retaining member (31) to disappear when the bolt recedes U-turn (18) in the unlocked position. Cremone bolt or locking bolt according to any one of Claims 7 to 11, characterized in that the lever (40) comprises along its part (51) remaining in all salient case with respect to the front edge of the housing (2), a control finger (52) in the form of a boss at the level of its outer edge (45), this control finger (52) being projecting from the dorsal face (42) of the head (39) of the U-bolt (18) so as to cooperate with the frame sleep, more particularly, the keeper intended to accommodate said latch bolt (18) at the time of closing the opening on its sleeping frame.

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