EP0894921A1 - Closure device, specially mortise lock with a latch bolt, for a French window or similar - Google Patents

Abstract

The lock comprises a flat housing (2) fitted into the edge of the French window surround and contains a sliding catch (6) with a shank (9) and drive tip (10) actuated by a control member (13) which holds the catch in its extended position when at rest. The lock incorporates a stop (R) for the control member (13) in its rest position, designed so that when the stop is retracted the prismatic tip (7) of the catch is able to project entirely from the lock casing. In addition, the connection (34) between the control member (13) and drive tip (10) is designed to free the tip when the catch is rotated about the axis of its shank

Description

The invention relates to a closure device, in especially a lock, to be embedded in a door leaf, of a French window or window.

• un boítier plat à encastrer ;
• un fouillot monté rotatif dans le boítier autour d'un axe géométrique orthogonal au plan moyen du boítier, ce fouillot pouvant être entraíné en rotation par une poignée, en particulier une béquille, le fouillot étant muni d'un bras de fouillot qui commande la tringle en coulissement.

A first aspect of the invention relates to a closure device intended for the operation of at least one rod slidingly mounted on the edge of the leaf, the rod carrying locking members, and which comprises:

• a flat recessed box;
• a nut rotatably mounted in the housing around a geometric axis orthogonal to the mean plane of the housing, this follower can be rotated by a handle, in particular a stand, the follower being provided with a follower arm which controls the rod sliding.

In a closing device, in particular a lock, with like this, the distance between the axis of the follower and a part, or headrest, integral with the housing applied against the edge of the leaf of particular importance. This distance, called "lock entry" corresponds to the distance between the hole made in the leaf for the passage of the drive rod controlled by the stand, and the door edge. The tendency is to reduce this distance. The result it is also necessary to reduce the "entry" of the mortise lock by example in a door.

This creates a problem for obtaining a displacement rod sufficient to ensure the closure of the leaf, in particular door. Indeed, the displacement of the rod depends, on the one hand, on the effective length of the follower's arm which attacks, at one end, the rod to transform a rotational movement into a movement of translation, and, on the other hand, of the angle of rotation of this arm of follower. The angle of rotation of the stand is generally imposed by the specifications and has a value close to 45 °.

In a simple drive system, where the follower transmits the angular displacement of the stand, it is clear that a decrease in the effective radius of the arm follower causes, for the same angle of rotation, a stroke arm end device smaller and therefore displacement lower of the rod.

To increase the amplitude of the rotational movement of the follower arm, keeping an angle of movement of the stand limited by the specifications, mechanisms for amplifying the rotation involving gears have been provided. Such mechanisms are expensive and take up space.

The object of the invention is, above all, to provide a device for closure, in particular a lock, of the kind defined above which allows, when the lock entry is small, to obtain nevertheless, in end of follower arm, sufficient displacement to ensure a suitable sliding of the rod. This system must remain simple and economical construction with a minimum of parts.

According to the invention, a closure device, in particular a lock of the kind defined above is characterized by the fact the follower arm is off-center relative to the follower so that rotate around a point farther from the rod than the center of rotation of the follower, a means being provided for directly driving in rotation by the follower the offset follower arm, without part intermediate.

The active length of the follower arm is thus increased which allows, despite a small lock entry, to obtain a sufficient displacement at the end of the follower arm, with a minimum of rooms.

Advantageously the means for training the arm of follower comprises a finger linked to the follower or to the follower arm, said finger being located radially, respectively, outside the contour a hub of the follower arm or of the follower, and being housed in a recess of this follower arm hub or follower respectively, so as to train the follower arm for the direction of suitable rotation, cooperating with an end stop of the recess, and to move freely in this recess, without train the follower arm, for the reverse movement of the handle or kickstand. It should be noted that the closer the finger is to the axis of the follower, the greater the travel of the rod, given that the axis of the follower is between the finger and the rod.

Preferably a large face of the lock case comprises a sleeve, of axis orthogonal to the plane of the face, defining at least two decentered scopes respectively guiding in rotation of the follower and the follower arm hub around their different centers of rotation.

This sleeve may include a bore whose axis passes by the follower center of rotation and an external surface constituted substantially by two half-cylinders of different diameters, but of common geometric axis passing through the offset center of rotation of the follower arm, the two half-cylinders connecting by two shoulders oriented substantially radially.

The follower arm has, at its hub, a substantially semicircular opening, of the same radius as that of the large cylindrical surface of the sleeve, the ends of the opening of the follower arm hub being connected by a curved cross member defining an inner concave arc of smaller radius, matching the semi-cylindrical surface of smaller radius of the sleeve; a shoulder is formed at each end of the curved cross member to come into abutment against a conjugate shoulder of the sleeve.

The follower has a circular cylindrical contour housed in the sleeve and a radial branch offset from the plane means of the follower so as to step over the crosspiece of the hub follower so that the finger can enter the recess.

Advantageously, the case, in particular the plaster is made of plastic; the sleeve formed of two parts of cylindrical surfaces of different diameters comes from molding with the housing.

Preferably the center of rotation of the follower and the center of arm rotation are located on a line orthogonal to the rod.

A second aspect of the invention relates to a device lock consisting of a latch bolt with oblique face. For such a lock, the invention in its second aspect aims to solve, in a simple and fast way, the adaptation to an assembly on a door opening to the right or to the left.

We know that for a lock with a latch bolt having a prismatic head with a single oblique face, the mounting of the bolt must be such that this oblique face is always the one that comes in contact with the fixed amount of the door at the time of closing. Depending on whether the door opens to the right or to the left, the lock must be configured accordingly and the latch bolt, with oblique face, must be turned 180 °.

The invention therefore also aims to provide a lock whose characteristics, taken independently or in combination with the characteristics defined above, allow a 180 ° turn of the latch bolt around an axis geometric orthogonal to the door edge, in order to transform quickly a right lock to a left lock or vice versa.

• un boítier plat à encastrer,
• un pêne monté coulissant dans le boítier, une tige constituant une queue de pêne et un embout d'entraínement en prise avec une pièce de commande du pêne, cette pièce de commande assurant, en position de repos, la retenue du pêne sorti, et assurant, lorsqu'elle est manoeuvrée par une béquille, l'effacement du pêne contre des moyens élastiques de rappel,

est caractérisée par le fait :

• qu'elle comprend un moyen de butée, pour la pièce de commande en position repos, propre à être effacé de l'extérieur du boítier, de sorte que lorsque ce moyen de butée est effacé, la tête prismatique du pêne peut sortir entièrement du boítier de serrure,
• et que la liaison entre la pièce de commande et l'embout d'entraínement du pêne est prévue pour permettre, en réponse à un mouvement de rotation du pêne autour de l'axe de la queue de pêne, une libération de l'embout d'entraínement relativement à la pièce de commande, puis, après un retournement du pêne autour dudit axe de la queue de pêne ou après un remplacement dudit pêne, pour permettre un réenclenchement de la liaison entre l'embout et la pièce de commande par un demi-tour du pêne autour dudit axe de la queue de pêne.

According to this second aspect of the invention, a lock to be embedded in a door leaf or French window, comprising:

• a flat recessed box,
• a bolt slidably mounted in the housing, a rod constituting a bolt tail and a drive endpiece engaged with a control piece of the bolt, this control piece ensuring, in the rest position, the retention of the bolt out, and ensuring , when it is operated by a crutch, the erasure of the bolt against elastic return means,

is characterized by the fact:

• that it includes a stop means, for the control part in the rest position, capable of being erased from the outside of the housing, so that when this stop means is erased, the prismatic head of the bolt can come entirely out of the housing lock,
• and that the connection between the control piece and the bolt drive end piece is provided to allow, in response to a rotary movement of the bolt about the axis of the bolt tail, a release of the end piece 'drive relative to the control piece, then, after a reversal of the bolt around said axis of the bolt tail or after a replacement of said bolt, to allow a reset of the connection between the end piece and the control part by a half -turn of the bolt around said axis of the bolt tail.

Preferably, the bolt is a U-bolt whose head prismatic has an oblique face.

The stop means advantageously consists of a tab linked to the housing and on which it is possible to act with a tool, from the outside of the case, through at least one opening provided in the wall of the lock housing.

The tab can be secured to the plaster of the housing.

Advantageously, the plaster of the case is molded in plastic and the leg comes from molding with the plaster.

Leg can rotate, especially by deformation torsional elastic, around an axis orthogonal to the long face of the housing.

Alternatively, the tab can be erased, in particular by elastic bending deformation, by a pivoting movement around an axis parallel to the large face of the housing.

Preferably, the tab in the rest position extends substantially parallel to the bolt tail.

The bolt control part is advantageously constituted by an articulated arm at one end on the housing, on the side of the bolt opposite the follower, and the arm has a light in which is engaged the end of the bolt drive, the edges of the light suitable for cooperating with the drive end piece during the rotation of the latter around the geometric axis of the bolt tail being chamfered to facilitate disengagement and re-engagement by rotation.

The tab may include a boss engaged in a opening of the plaster in the leg rest position, and in abutment against an edge of the latch control piece. This edge may include a notch in which the displacement boss can be engaged of the tab, which allows the exit of the bolt.

The bolt drive tip is advantageously consisting of a plate whose mean plane is orthogonal to the axis geometric of the rod, this plate having rectilinear edges parallel guided and retained in rotation in the spring housing recall of the bolt, a recess of sufficient diameter being provided at the end housing to allow, when the prismatic head of the bolt is out of the housing, a rotation of the nozzle in this recess.

The closing device, in particular the lock, comprises generally a rod lock bolt whose displacements are controlled, for example, by a bit of a cylinder of security, activated by an authorized key.

Advantageously, the closing device or the lock includes an indexing means integral with the housing suitable for cooperating with a combined means provided on the bolt. This will prevent the bolt moves outside the maneuvers imposed by the bit. The indexing means of the housing can be constituted by a pin, integral of the case, engaged in a window provided in the bolt, this window comprising a median boss defining, on either side, two housings for the pin, corresponding to two indexed positions.

The closure device or the lock may include a rod brake pressing against a rod boss. The brake rod can be constituted by an elastic means, in particular a tongue, integral with the housing and coming from molding with this housing when the latter is made of plastic. This rod brake plays a role of anti-vibration for the rod and allows, in addition, a rod position indexing.

The invention consists, apart from the provisions set out above, in a number of other provisions which will be more Explicit question below about examples of realizations described with reference to the accompanying drawing, but which are in no way limiting.

• la figure 1 est un schéma d'une partie de serrure conforme à l'invention, faisant apparaítre en particulier le fouillot, le bras de fouillot et la tringle ;
• la figure 2 est un schéma semblable à la figure 1 pour une position différente des pièces ;
• la figure 3 est une vue en élévation d'une serrure à encastrer, selon l'invention, en position de repos, le foncet qui ferme le palâtre de boítier étant retiré ;
• la figure 4 est une coupe suivant la ligne IV-IV de la figure 3 ;
• la figure 5 est une vue partielle, semblable à la figure 3, montrant l'effacement d'une patte formant moyen de butée ;
• la figure 6 montre, semblablement à la figure 5, la serrure alors que le pêne demi-tour est sorti du boítier ;
• la figure 7 est une vue en élévation agrandie d'un pêne dormant et d'un pion d'indexation ;
• la figure 8 est un schéma en perspective éclatée, tourné de 90° par rapport aux figures 3, 5 et 6, du pêne, de la queue de pêne et d'une partie de la pièce de commande ;
• la figure 9 est une coupe schématique, agrandie, suivant la ligne IX- IX de la figure 8 ;
• la figure 10 est une vue partielle en élévation, en position repos, d'une variante de la serrure à encastrer ;
• la figure 11 est une coupe suivant la ligne XI-XI de la figure 10 ;
• la figure 12 montre, semblablement à la figure 10, la serrure dans la position pêne demi-tour sorti ;
• la figure 13, enfin, est une coupe suivant la ligne XIII-XIII de la figure 12, illustrant la manoeuvre permettant de faire sortir le pêne demi-tour.

On this drawing :

• Figure 1 is a diagram of a lock part according to the invention, showing in particular the follower, the follower arm and the rod;
• Figure 2 is a diagram similar to Figure 1 for a different position of the parts;
• Figure 3 is an elevational view of a built-in lock, according to the invention, in the rest position, the lock which closes the housing plaster being removed;
• Figure 4 is a section along the line IV-IV of Figure 3;
• Figure 5 is a partial view, similar to Figure 3, showing the erasure of a tab forming stop means;
• Figure 6 shows, similarly to Figure 5, the lock while the latch bolt is out of the housing;
• Figure 7 is an enlarged elevational view of a deadbolt and an indexing pin;
• Figure 8 is an exploded perspective diagram, rotated 90 ° relative to Figures 3, 5 and 6, of the bolt, the bolt tail and part of the control part;
• Figure 9 is an enlarged schematic section along the line IX-IX of Figure 8;
• Figure 10 is a partial elevational view, in the rest position, of a variant of the built-in lock;
• Figure 11 is a section along the line XI-XI of Figure 10;
• Figure 12 shows, similarly to Figure 10, the lock in the bolt out position;
• Figure 13, finally, is a section along the line XIII-XIII of Figure 12, illustrating the maneuver to bring out the latch bolt.

The following description relates to a lock but applies to any closure device with a similar structure, in particular a window lever.

Referring to the drawings, in particular to FIG. 3, we can see a lock 1 to be embedded in a door or window door leaf.

The lock has a flat case 2 made of a plaster 3 closed, on a large side, with a wall 4 (fig.4).

The lock is intended, in particular, for the operation of a rod 5 sliding mounted on the edge of the door leaf (not shown), which is located in a vertical plane orthogonal to the plane of the figure 3.

The rod 5 comprises a lower part 5a, which is lowered for locking, and a high part 5b which is raised for the locking. Locking devices, such as rollers (not shown) are provided on the rod 5.

A latch bolt 6 is mounted in the housing 2, sliding perpendicular to the direction of the rod 5, i.e. horizontally. The latch bolt 6 has a prismatic head 7 with an oblique face 7a and a face 7b parallel to the large face of the palaster. The upper and lower horizontal faces of the head 7 have substantially semi-cylindrical guide grooves 7c extending parallel to the large face of the plaster. Bolt 6 crosses an opening in a plate 8, or headrest, fixed against the door edge and fixed to the housing 1. The opening in the headrest 8 comprises a tail unit 8a engaging in the grooves 7c. The rod 5 slides against the inner face of the headrest 8.

The bolt head 7 is integral with a bolt rod or tail 9 extending horizontally in the housing and provided at its end interior, a tip 10, or piece of bolt drive, extending perpendicular to the plane of Figure 3. The tip 10 is consisting of a plate obtained from a circular disc cut along two parallel flats symmetrical with respect to the center and whose ends are connected by arcs of a circle. The end piece 10 is guided in translation by the inner wall of a housing 11 (fig. 8) in which a compression spring is mounted 12 pushing the latch bolt 6 outwards. The end of the housing 11 located on the side of the head 7 has a recess 11a of sufficient diameter to allow rotation of the nozzle 10 around the geometric axis of the rod 9.

The end piece 10 is engaged with a control part 13 of the latch bolt which will be discussed later.

A follower 14 is rotatably mounted, in the housing 2, around of a geometric axis orthogonal to the mean plane of the housing, that is to say perpendicular to the plane of Figures 1, 2 and 3 of the drawings. The follower 14 has a square hole 15 to be crossed by a rod drive of combined cross section controlled by a stand 16. A torsion spring 14r exerts an elastic return on the follower.

The stand 16 can execute, from the position of rest, a movement in the first direction, especially a lowering movement, to control the withdrawal of the latch bolt 6 in the housing 1, by a conventional drive mechanism which will not be described in more detail. The stand 16 can also execute a movement in the opposite direction, i.e. a movement of lifting as illustrated in Figure 2, to drive in rotation the follower 14 and control the displacement of the rod 5 by through a follower arm 17.

As seen in Figures 1 and 2, the follower arm 17 has a hub 18 surrounding the follower 14 and, at its end distant from the center of rotation, teeth 19 suitable for engaging in corresponding openings 20, provided in the lower part 5a of the rod 5. These teeth 19 allow to directly drive the part bass 5a in vertical sliding in response to a movement of rotation of the follower arm 17.

Other teeth 19b are provided on the hub 18 for mesh with a toothed sector 19c articulated on an axis integral with the palaster. The sector 19c controls the movement of the upper part 5b of the rod, in the opposite direction from the lower part 5a.

The amplitude of the vertical displacement of the lower rod 5a, in response to a rotational movement of the follower arm 17 of determined angular amplitude, depends on the effective radius of the arm follower 17, i.e. the distance between the center of rotation of this arms and teeth 19.

The follower 14 rotates around a cutting geometric axis the plane of Figure 1 at point A. The distance E between this point A and the outer face of the headrest 8 is the "lock entry" and corresponds to the distance between the hole made in the door for the passage of the rod square drive of the follower 14, and the door edge.

We want this distance E to be small.

To prevent this small distance E from causing a appreciable reduction in the effective radius length of the follower arm 17, which would cause insufficient vertical displacement of the rod low 5a, the invention provides the arrangement set out below.

As illustrated in Figures 1 and 2, the follower arm 17 is off-center relative to the follower 14 so as to turn around from a point B further from the rod 5 than the center of rotation A of the follower, which includes a means 21 for directly driving rotation of the follower arm 17, without intermediate part such as one or several gables. The distance from B to the rod 5 is equal to E + Y.

The means 21 is constituted by a finger 22 integral with a radial branch 23 linked to the follower 14 with which it is integral. Finger 22 is located radially outside the contour of the hub 18 of the follower and is housed in a recess 24 of this hub 18. The finger 22 can drive the follower arm 17 for the proper direction of rotation stand, i.e. the opposite direction of the clock according to the diagram of Figures 1 and 2, cooperating with an end stop of the recess 24.

To move the stand 16 from the position rest of Figure 1 clockwise, finger 21 moves freely in the recess 24 without driving the arm 17.

This arm 17 has, at its hub 18, a opening 25 substantially semi-circular, centered on point B, the ends of this opening 25 being connected by a curved crosspiece 26 defining an inner concave arc 27, also centered on the point B, but with a smaller radius than most of the opening 25. The radial branch 23 of the follower is offset to span the cross 26, so that the finger 22 enters the recess 24.

The large face of the housing 2 formed by the bottom of the palâtre 3 opposite the foncet 4 has a sleeve 28 of orthogonal axis in the plane of the face, that is to say orthogonal to the plane of FIGS. 1 and 2. This sleeve 28 defines, by its outer surface, two bearing surfaces 29, 30 formed by arcs of a circle, of different radius, centered on the point B. The bearing 29 has a radius equal to that of the opening 25 and marries the inner circular surface of this opening, while the scope 28 has a smaller radius equal to that of the concave arc 27. The two ends of the span 30 are connected to the ends of the carried 29 by shoulders 31 in radial orientation, constituting limit switches suitable for cooperating with the respective ends of the cross member 26. The angular extent of the span 29 is less than that of the opening 25 so that in the rest position of the stand 16, illustrated in FIG. 1, an angular free space I exists between the upper shoulder 31 and the upper end of the cross-member 26. This angular space corresponds to the authorized upward stroke stand 16, about 45 ° as illustrated in Figure 2.

When the plaster 3 is made of plastic, the sleeve 28 is advantageously in one piece with the plaster 3 and just molding with him.

The sleeve 28 has a central opening cylindrical 32 of circular section, the center of which corresponds to the point A. The follower 14 has a circular cylindrical outer contour of the same radius as the opening 32 in which it is housed and guided in rotation around point A.

Preferably the center of rotation A of the follower 14 and the center of rotation B of the follower arm 17 are located on a straight line orthogonal to the rod 5.

That said, the operation of the lock with respect to relates to the control of the rod 5 by the stand 16 and the arm of follower 17 is as follows.

In the rest position of the stand 16, illustrated on the Figure 1, the finger 21 is located near the upper end of the recess 24, and the free space I is located between the radial shoulder upper 31 and the upper end of the crosspiece 26. The end lower of this cross 26 is in abutment against the radial shoulder 31 lower.

If the stand 16 is lowered, the finger 21 moves freely in the recess 24, without driving the follower arm 17 which remains in the position illustrated in FIG. 1. This movement of lowering the stand 16 is conventionally used to order the withdrawal of the latch bolt 6.

When the stand 16 is raised, as illustrated on the Figure 2, the follower 14 and the finger 21 rotate in the opposite direction clock and finger 21 abutting against the upper end of the recess 24 rotates the follower arm 17.

While the rotation of the follower 14 takes place around the center A distant only from E of the door edge, the rotation of the arm of follower 17 takes place around center B distant from E + Y of the song door.

The effective radius of the arm 17, determining the amplitude of the peripheral displacement of teeth 19 for a given angle, is therefore greater than E. This results in a greater linear displacement of the rod 5 in its lower part 5a. At the end of the movement, as visible in FIG. 2, the tooth 19 of the arm 17 which cooperates with the opening 20 of the rod 5 is no longer the same as that of the starting position.

In the stand-up position 16 illustrated in FIG. 2, the free space I has moved between the shoulder lower radial 31 and the lower end of the cross-member 24. The upper end of the cross member 26 abuts against the upper radial shoulder 31.

When lowering the stand 16 from the position Figure 2, the finger 21 moves freely in the recess 24 without train the arm 17 or the rod 5.

When the stand 16 returns to the rest position of the Figure 1, the finger 21 is then in abutment against the end lower of the recess 24.

If, from this position not shown on the drawings, lower the stand 16, then control the movement the rod 5 to bring it back to the rest position of FIG. 1, simultaneously with the withdrawal of the latch 6.

The solution of the invention allows a reduction of the opening or closing movement of the lock with a compact mechanism and a minimum of parts, training directly the follower arm 17 by the follower 14, without parts intermediate such as one or more pinions.

This compact mechanism can be integrated into several lock models varying by their entry E. In addition the sleeve 28 constitutes a support piece which ensures correct guiding in rotation of the follower 14 and of the follower arm 17. This mechanism designed on a base advantageously can be transplanted into any other larger case.

We now consider the mounting problem posed by the oblique face latch 6a 7a which must always be the one coming in contact with the fixed part of the lock, located on the upright of the door, at the time of closing. As there are doors opening on the right or on the left, by pulling or pushing, the locks must be adapted to all needs.

For this purpose, the invention aims to provide a lock which allows you to quickly and easily turn the latch 180 °.

As shown in Figure 3, the control piece 13 of the bolt is constituted by a substantially vertical articulated arm, towards its upper end, on an axis 33 advantageously made in plastic and molded material with the plaster 3. The arm 13 extends downward beyond the bolt 9 and has a light 34 in which engages one end of the endpiece 10. The upper and lower horizontal edges of the light or window 34, as visible in FIG. 9, have a chamfer c for facilitate disengagement and re-engagement, by rotation around the geometric axis of the bolt tail 9, of the end piece 10, the small sides are rounded. The edges v of the light 34 orthogonal to the axis bolt tail geometry 9 does not have a chamfer pronounced to avoid any disengagement of the drive end 10 in response to a translational movement of the bolt parallel to the axis bolt tail geometry 9.

The lock comprises a stop means R for the part 13 in the rest position, this stop means being clean to be erased from the outside of the case.

The stop means R consists of a tab 35 linked to the box 2, and on which it is possible to act with a tool T of the outside of the housing by at least one opening 36 provided in a wall of the housing, in particular provided in the wall 4.

More specifically, in the case of a plaster 3 produced in plastic material, the lug 35 is itself made of material plastic and comes from molding with the plaster. Leg 35 is angled and integral with the plaster; it has at its free end a boss 35a accessible through the opening 36 provided in the hole 4.

According to the embodiment of Figures 3 and 4, the tab 35 extends substantially parallel to the bolt tail 9 and has a return at right angles 37 secured to the bottom of the plaster 3.

The tab 35 can pivot, by elastic deformation of torsion, around an axis orthogonal to the large face of the plaster 3, i.e. an axis orthogonal to the plane of Figure 3.

The boss 35a of the tab 35 forms a stop for a edge of the control part 13, as visible in FIG. 3, and retains this part in the rest position, the latch bolt 6 being so went out normally.

The edge of the tab 13 comprises, below the zone normally coming into abutment against the boss 35a, a notch 38 in which the boss 35a can be engaged by displacement of the tab using tool T (fig. 5), which allows complete removal of the bolt 6, as illustrated in Figure 6. The tab 13 is retained by the boss 35a resting against the bottom of the notch 38.

In this advanced position of the bolt tail 9, the end piece 10 is removed from the housing 11 of the spring 12 and is located at level of the recess 11a of larger diameter allowing the rotation of the nozzle 10 around the geometric axis of the tail bolt 9.

It is then possible to rotate the bolt 6 by 180 ° around the axis of the bolt tail 9 by exerting a torque on the head 7. The end of the end piece 10, located in the lumen 34, is gives off this light by cooperating with a chamfer c and the end opposite of the end piece 10 is housed in the lumen 34 after the U-turn full head 7.

During the turning operation, the end piece 10 is cleared from the light 34 and the part 13 is no longer subjected to the thrust of spring 12. Part 13 could tend, by its own weight, to return to the position of FIG. 3, in which case the end piece 10 would no longer be in front of light 34 after the U-turn. this is prevented because the part 13 is kept in angular position due to the torsional stress of the lug 35 which causes a push of the upper face of the boss 35a against the upper edge of notch 38. The friction thus created ensures the retention of the part 13.

After turning over the bolt 7, the assembly is returned to place by pushing the bolt 6 inside the housing 1. The part 13, driven by the nozzle 10, pivots in the opposite direction of the clock around the axis 33 and the notch 38 emerges from the boss 35a. The leg 35 returns, by elasticity, to its normal position illustrated on the figure 3.

The reintroduction of the head profile 6 is carried out in engaging the grooves 7c in the empennage of the headrest 8.

The foregoing explanations show the operation of the lock to ensure the reversal of the turn around.

Figures 10 to 13 show an alternative embodiment in which identical elements or playing analogous roles are designated by the same reference numbers possibly preceded from the number 1 of hundreds.

The stop means R is constituted by a tab 135 coming molding with the plaster 3 plastic. We find the boss 135a cooperating with an edge of the part 113 to retain it in rest position. However, the edge of this piece 113 does not include more indentation. The erasing of the tab 135 is carried out by a pivoting movement about a vertical axis, parallel to the large face of the plaster panel 3, so that the boss 135a passes in rear of room 113, according to the representation of the drawings, when exerts on the boss 135a a thrust using a tool T (fig. 13).

When the part 113 has thus been released from the stop constituted by the boss 135a, it performs a rotational movement additional, clockwise, ensuring complete exit from the bolt head 7, as illustrated in FIG. 13.

We can therefore perform the reversal movement of the head 7 by rotation of 180 ° around the axis of the bolt tail 9.

When the end piece 10 has come out of the light 34, during the inversion operation, the part 113 is retained in position angular by the pressure exerted by the boss 135a against the face back of part 113 (fig. 12).

As before, after turning the latch turn, just reintroduce the profile of the head 7 into the tail 8a of the headrest and push back the bolt to replace the lock in its rest position and proceed with its installation.

According to the invention, no specific part is necessary when turning the bolt. There is no special spring, no screws disassemble or other part to be removed.

This results in a significant gain for the manufacturer in terms of the production of parts and the assembly time. Moreover the turning operation is facilitated, without risk of loss of parts by the user.

The T tool to use is standard and common, for example screwdriver, point, knife, scissors.

The production of plastic, for example acetal, polyacetal, loaded or not, with plaster 3 and legs 35, 135 and others elements coming directly from molding, is particularly advantageous.

The lock has in the lower part, in the embodiment envisaged, a deadbolt 39 for the locking of the rod 5. This bolt 39 can be moved in circular translation by a bit 39a of a safety cylinder 39b controlled by a key.

The bolt 39 has a window 40 (fig. 7) having a median boss 41 defining on both sides a housing indexing.

A pin 42 integral with the large face of the plaster 3 is planned to enter this window, this pawn having a certain elasticity. Preferably, when the plaster 3 is made of material plastic, pin 42 is also made of plastic and comes molding with the plaster.

Pawn 42 is placed in one or other of the housings located on either side of the boss 41 and crosses this boss by elastic deformation during the movement of the bolt.

Pawn 42 allows for position indexing of the bolt, exerting a slight elastic pressure force against the edge of the combined window and prevents the bolt from moving outside the maneuvers imposed by the safety cylinder bit.

A rod brake 43 is further provided in the form an elastic tongue 44 fixed to the plaster 3. When the latter is made of plastic, the tongue 44 is also made of plastic material and comes from molding with the plaster. Tab 44a an L shape and has a branch substantially parallel to the rod 5 provided at its upper end with a clean bulge 44a to lean against and rub against a boss 45 on the rod 5.

The rod brake 43 has an anti-vibration role for the rod 5. It also allows indexing of the position of the rod 5, for example by cooperation of the bulge 44a with a slight hollow provided in boss 45.

Claims (24)

Closing device, in particular lock, to be embedded in a window-door leaf or the like, comprising; a flat box (2) to be built in, a bolt (6) slidably mounted in the housing, a rod (9) constituting a bolt tail and a drive end piece (10) engaged with a control piece (13) of the bolt, this control piece ensuring, by rest position, retaining the bolt out, and ensuring, when it is operated by a stand (16), the erasure of the bolt against elastic return means (12), characterized by the fact: that it comprises a stop means (R), for the control part (13) in the rest position, capable of being erased from the outside of the housing, so that when this stop means (R) is erased, the prismatic head (7) of the bolt can come entirely out of the lock case (2), and that the connection (10,34) between the control part (13) and the drive end piece (10) of the bolt is provided to allow, in response to a rotational movement of the bolt around the axis of the bolt tail (9), releasing the drive end piece (10) relative to the control part (13), then, after turning the bolt (6) around said axis of the bolt tail or replacing it of said bolt, to allow the link (10, 34) between the end piece and the control piece to be reset by a half-turn of the bolt around said axis of the bolt tail. Device according to claim 1, characterized by the fact that the bolt (6) is a half-turn bolt, whose prismatic head (7) has an oblique face (7a). Device according to one of claims 1 or 2, characterized in that the stop means (R) is constituted by a tab (35, 135) linked to the housing and on which it is possible to act with a tool (T) from the outside of the housing through at least one opening (36) provided in a wall of the lock housing. Device according to claim 3, characterized in that that the tab (35, 135) is integral with the plaster (3) of the housing. Device according to claim 4, characterized in that that the plaster (3) of the case is molded in plastic and that the leg (35, 135) comes from molding with the plaster (3). Device according to one of claims 3 to 5, characterized by the fact that the leg (35, 135) at rest extends substantially parallel to the bolt tail (9). Device according to one of claims 3 to 6 characterized in that the tab (35, 135) can pivot by elastic torsional deformation about an axis orthogonal to the large face of the palaster. Device according to one of claims 3 to 6, characterized in that the tab (35, 135) can be removed by elastic bending deformation by a pivoting movement around an axis parallel to the large face of the plaster. Device according to one of claims 1 to 8, characterized by the fact that the control piece of the bolt is made by an arm (13) articulated at one end on the housing, and said arm (13) has a light (34) in which the endpiece (10) is engaged bolt drive, the edges of the light adapted to cooperate with the drive end piece (10) during the rotation of the latter around the geometric axis of the bolt tail (9) being chamfered (c) to facilitate disengagement and re-engagement by rotation. Device according to one of claims 3 to 9, characterized by the fact that the tab (35, 135) has a boss (35a, 135a) engaged in an opening (36) of the plaster in the rest position of the tab, and in abutment against an edge of the control part (13). Device according to claim 10, characterized by causes the edge of the control piece (13) to abut against the boss (35a) of the tab has a notch (38) in which can be engaged the boss (35a) by displacement of the tab, which allows the exit of the bolt. Device according to one of claims 1 to 11, characterized by the fact that the drive end piece (10) of the bolt is consisting of a plate whose mean plane is orthogonal to the axis geometric of the bolt tail (9) this plate having two parallel rectilinear edges guided and retained in rotation in the housing (11) of the return spring (12) of the bolt, a recess (11a) of sufficient diameter being provided at the end of the housing to allow, when the head (7) of the bolt is out of the housing (1), a rotation of the end piece (10) in this recess. Device according to one of claims 1 to 12, intended for the operation of a rod (5) mounted sliding on the edge of the wing, comprising a follower (14) rotatably mounted about an axis geometric orthogonal to the mean plane of the case, this follower being able be rotated by a handle, in particular a crutch (16), the follower (14) being provided with a follower arm (17) which controls the rod (5) sliding, characterized in that the follower arm (17) is off-center relative to the follower (14) of so as to turn around a point (B) further from the rod (5) that the center of rotation (A) of the follower (14), a means (21) being provided to drive directly in rotation by the follower (14) the arm of follower (17) off center, without intermediate piece. Device according to claim 13, characterized by fact that the means (21) for driving the follower arm comprises a finger (22) linked to the follower (14) or to the follower arm (17), the finger (22) being located radially respectively outside the outline of a hub (18) of the follower arm or of the follower (14), and being housed in a recess (24) of this follower arm hub or of the follower (14) respectively, so as to drive the follower arm (17) for the suitable direction of rotation of the stand (16) by cooperating with a end stop of the recess (24), and to move freely in this recess (24), without driving the follower arm (17), for the movement of the stand controlling the latch in the opposite direction. Device according to one of claims 13 or 14, characterized by the fact that a large face of the lock housing comprises a sleeve (28) with an axis orthogonal to the plane of the face, defining at least two scopes (29, 30; 32) off-center ensuring respectively the rotation guide of the follower (14) and the hub (18) of follower arms around their different centers of rotation (A, B). Device according to claim 15, characterized by the sleeve (28) has a circular opening (32) constituting the scope for guiding the follower (14), opening of which the axis passes through the center of rotation (A) of the follower, and a surface outer substantially constituted by two half-cylinders of diameter different (29, 30) of common geometric axis passing through the center of rotation (B) offset from the follower arm, the two half-cylinders connecting by two substantially oriented shoulders (31) radially. Device according to one of claims 15 or 16, characterized in that the follower arm (17) has at the level of its hub (18) an opening (25) substantially semi-circular, of same radius as that of the large cylindrical surface (29) of the sleeve (28), the ends of the opening (25) of the arm hub of follower being connected by a curved crosspiece (26) defining an arc inner concave of smaller radius following the semi-cylindrical surface (30) of smaller radius of the sleeve (28). Device according to claim 17, characterized by causes a shoulder to be formed at each end of the cross member curved (26) to abut against a conjugate shoulder (31) of the sleeve. Device according to one of claims 16 to 18, characterized by the fact that the follower (14) has a contour circular cylindrical housed in the opening (32) of the sleeve (28), and a radial branch (23) offset so as to span the cross-member (26) of the follower hub so that the finger (22) can enter the recess (24). Device according to one of claims 16 to 19, characterized by the fact that the plaster is made of plastic and that the sleeve (28), formed of two cylindrical surface parts of different diameter comes from molding with the plaster (3). Device according to one of claims 13 to 20, characterized by the fact that the center of rotation (A) of the follower (14) and the center of rotation (B) of the arm (17) are located on a straight line orthogonal to the rod (5). Device according to one of claims 13 to 21 comprising a rod locking bolt (39), characterized by the fact that it includes an indexing means (42) integral with the housing (1) suitable for cooperating with a combined means (40, 41) provided on the bolt. Device according to claim 22, characterized by fact that the indexing means comprises a pin (42) integral with the housing, in particular coming from molding with the plaster (3) in material plastic, and that the bolt (39) has a window (40) provided with a median boss (41) window in which the pin (42) is engaged. Device according to one of claims 13 to 23, characterized in that it comprises a rod brake (43) (5), in particular formed by a tongue (44) coming from molding with the plastic plaster, resting against a boss (45) of the rod (5).

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