EP0801193A1 - Mortise lock - Google Patents

Abstract

The lock (1), which is encastred in a door (2), is operated from each side of the door by an operating knob (3) and a key (4). The key enables withdrawal of a half turn bolt. The lock comprises two doorknob flanges (6,7) which can rotate relative to each other on the same axis (8) and are each fixed to the corresponding knob. The half turn bolt is fixed to a selection part (9) which can move in the transverse direction (10), corresponding to the thickness of the lock casing (11), between two predetermined positions. Each knob flange is fixed by corresponding lock webs (12,13). These webs engage the selection part when this is brought near the flange for activating the bolt when the flange is turned in a direction corresponding to bolt withdrawal. The web remains disengaged from the selection part when this is in its other position near the other flange.

Description

The present invention relates to a lock adapted to be embedded in the thickness of an opening, to be actuated on each side of said opening by an operating member and / or a key, and to not allow the withdrawal of the latch bolt from the outside only by means of the key, this lock comprising two spindles rotatably mounted with respect to the same axis and respectively secured to a corresponding operating member.

In general, the present invention relates to a lock, a lever-lock, or the like, of the aforementioned type, for door, French window or the like.

Numerous examples of the production of locks of this type are known, which in general are also locks and bolts adapted to control both a latch bolt, a deadbolt and at least one control rod.

We know that in this type of locks, the mechanical parts or the functions of the lock are not controlled in the same way depending on whether the user is inside or outside the opening equipped with a such lock. The objective is indeed to obtain a locking of the opening as soon as the user leaves the room accessible by this opening. It is a question of obtaining the inviolability of the lock for a third party located outside the opening and who would not have the key. Only the key is used to unlock the door. It is the latch bolt which ensures the locking of the opening. Such locks generally equip landing doors.

Such a lock is described for example in FR-A-2 657 385 in the name of the Applicant. This lock comprises a conventional follower secured to the internal operating member, and which performs all the functions of a conventional bolt lock. It further comprises a second follower secured to the external operating member, which is adapted to come into engagement with the operating square of the first follower by means of coupling means arranged in such a way that the follower secured to the he external actuator must turn a certain vacuum angle in one direction or the other before being able to drive the main follower. This no-load rotation prohibits the operation of the latch bolt from the external operating member.

This lock requires the use of a support plate which must be applied to the external face of the door. Furthermore, it is not reversible, that is to say, it is not possible to choose, when the lock is put in place on the door, and for an observer looking at the lock embedded in the thickness of the door, the side - right or left - which corresponds to the outside of the room accessible by this opening.

Other locks of the aforementioned type are also known, comprising two conventional locks. These locks have a thickness greater than that of conventional locks so that they cannot be embedded in the cut-out. usually in the thickness of a sash. This forces either to increase the thickness of the notch, which reduces the resistance of the opening, or to transfer functions outside the lock, for example in the cleanliness plates, whose mechanical elements cannot be accommodated. in the classic dimension of the lock.

The object of the present invention is to remedy the drawbacks of known systems and to propose a lock of the aforementioned type which is very easily and very simply reversible, and which makes it possible to house all the mechanisms of such a lock inside a classic thickness housing.

• chaque fouillot est adapté à tourner librement autour de son axe par rapport à l'autre fouillot,
• le pêne demi-tour est solidaire d'un élément de sélection mobile dans la direction transversale correspondant à l'épaisseur du boîtier de la serrure entre deux positions prédéterminées,
• chaque fouillot est solidaire de moyens correspondants de la serrure agencés de manière à venir en prise avec ledit élément de sélection lorsque ce dernier est dans sa position proche dudit fouillot pour actionner le pêne demi-tour lorsqu'on fait tourner ledit fouillot dans un premier sens correspondant au retrait du pêne demi-tour, et à rester hors de prise avec ledit élément de sélection lorsque ce dernier est dans son autre position proche de l'autre fouillot.

According to the invention, the lock of the aforementioned type is characterized in that:

• each follower is adapted to rotate freely around its axis with respect to the other follower,
• the U-bolt is secured to a movable selection element in the transverse direction corresponding to the thickness of the lock housing between two predetermined positions,
• each follower is secured to corresponding means of the lock arranged so as to come into engagement with said selection element when the latter is in its position close to said follower to actuate the latch bolt when said follower is turned in a first direction corresponding to the withdrawal of the latch bolt, and to remain out of engagement with said selection element when the latter is in its other position close to the other follower.

Thus, to make this lock reversible, it suffices, on the one hand, to turn the latch bolt 180 ° around its axis, and on the other hand, to move the selection element from one to the 'other of its two positions to allow the withdrawal of the latch bolt by means of the only nut corresponding to the operating member located on the inner side of the opening.

According to an interesting version of the invention, each follower cooperates with a corresponding flange rotatably mounted around the axis of said follower and adapted to return the movement of the barrel when the latter is actuated by the key, and includes means for driving said flange in rotation when said follower is rotated in said first direction of withdrawal of the latch turn, and that each flange has a finger which engages with the selection element or which remains out of engagement with said selection element depending on whether said element is in its position on the side of the corresponding follower or in its other position.

According to an advantageous version of the invention, the two sockets are substantially symmetrical with respect to each other with respect to the median plane of the lock perpendicular to the common axis of rotation of the sockets, the two flanges are also substantially symmetrical with respect to to said median plane, and each follower has on its lateral face, on the side of the adjacent lateral face of the lock housing, a cylindrical projection having the axis of the follower axis, this cylindrical projection passing through a circular lumen of the corresponding flange, and preferably also passing through a circular lumen from the adjacent side face of the lock housing.

It is thus possible to accommodate in a conventional lock housing all the elements of the lock without having to limit the thickness and therefore the mechanical strength of these elements and the corresponding reliability of the lock. The light provided in the side face of the lock housing ensures a rigorous alignment of the corresponding follower on the theoretical axis thereof.

According to a preferred version of the invention, each follower comprises on its cylindrical projection a latching finger extending radially outwards from this projection, and each flange comprises at the periphery of its circular light a complementary curvilinear light adapted to receiving said catching finger and allowing rotation of the flange in the first direction under the action of the finger of the corresponding follower without interfering with the control of the flange from the key.

Other features and advantages of the present invention will appear in the detailed description below.

• la figure 1 est une vue en élévation simplifiée d'un mode de réalisation de la serrure selon l'invention, de nombreux constituants ayant été enlevés pour la clarté de la figure, la flasque étant dans la position qui correspond à la position normale sortie du pêne demi-tour ;
• la figure 2 est une vue semblable à la figure 1, la flasque étant dans la position qui correspond à la position rentrée du pêne demi-tour ;
• la figure 3 est une vue de dessus, avec arrachements, de la serrure de la figure 1 ;
• la figure 4 est une vue partielle, avec arrachements, de la serrure de la figure 1, prise depuis la gauche de cette figure 1 et correspondant à ce que voit un observateur regardant la serrure encastrée dans l'épaisseur de l'ouvrant,, l'élément de sélection étant dans la position dans laquelle l'organe de manoeuvre intérieur est à la droite de la figure ;
• la figure 5 est une vue semblable à la figure 4, l'élément de sélection étant dans son autre position ;
• la figure 6 est une vue agrandie d'un détail de la figure 4, l'élément de sélection n'étant pas représenté ;
• les figures 6A et 6B sont des vues semblables à la figure 6, l'élément de sélection étant respectivement dans les positions qu'il occupe dans les figures 4 et 5 ;
• la figure 7 est une vue de droite de la figure 6, avec arrachements ;
• ia figure 8 est une vue en élévation du fouillot situé dans ia partie gauche des figures 4 et 5 et dans la partie supérieure de la figure 3 ;
• les figures 8A et 8B sont respectivement des vues de gauche et de dessus du fouillot de la figure 8 ;
• la figure 9 est une vue en élévation du fouillot situé dans la partie droite des figures 4 et 5 et dans la partie inférieure de la figure 3 ;
• les figures 9A et 9B sont respectivement des vues de gauche et de dessus du fouillot de la figure 9 ;
• la figure 10 est une vue de face du support de crémaillères de la serrure selon le mode de réalisation de la figure 3 ;
• les figures 10A, 10B et 10C sont respectivement des vues de droite, de dessus, et une vue en coupe suivant XC-XC à la figure 10A, du support de crémaillères de la figure 10 ;
• la figure 11 est une vue de face de l'élément mobile à crémaillère qui s'insère dans la partie gauche du support de la figure 10 ;
• les figures 11A et 11B sont respectivement une vue de droite et une vue de dessus de l'élément mobile à crémaillère de la figure 11 ;
• la figure 12 est une vue de face de l'élément mobile à crémaillère qui s'insère dans la partie droite du support de la figure 10 ;
• les figures 12A et 12B sont respectivement une vue de droite et une vue de dessus de l'élément mobile à crémaillère de la figure 12 ;
• les figures 13 et 14 sont des vues semblables respectivement aux figures 1 et 2 sur lesquelles on a représenté en outre le chevalet de commande d'une tringle, un pêne dormant et un barillet de serrure ;
• les figures 15A, 15B et 15C sont des vues semblables à la figure 14 représentant une variante de réalisation de la serrure selon l'invention, le fouillot étant représenté respectivement dans sa position de repos, sa position basse et sa position haute ;
• la figure 16 est une vue schématique en élévation, partiellement en coupe, d'un mode de réalisation des extrémités respectives des deux carrés de manoeuvre ;
• la figure 17 est une vue semblable à la figure 16 d'une variante de réalisation des extrémités des carrés de manoeuvre ;
• la figure 18 est une vue semblable à la figure 16 d'une autre variante de réalisation des extrémités des carrés de manoeuvre ;
• les figures 18A, 18B et 18C sont des vues semblables à la figure 18 représentant respectivement les trois constituants de l'assemblage de la figure 18;
• les figures 19, 20,21 et 22 sont respectivement une vue en élévation, une vue de gauche, une vue partielle de dessus et une vue en coupe suivant XXII-XXII à la figure 19, d'un mode de réalisation du pêne demi-tour de la serrure de la figure 1, le coulisseau et le doigt de blocage porté par le coulisseau n'étant pas représentés ;
• les figures 19A et 22A sont des vues respectivement semblables aux figures 19 et 22, le doigt de blocage étant dans sa position rentrée à l'intérieur du pêne demi-tour ;
• les figures 19B et 22B sont des vues respectivement semblables aux figures 19 et 22, le doigt de blocage étant dans sa position sortie par rapport au pêne demi-tour ; - les figures 23A et 23B sont des vues semblables à la figure 21 avec arrachements représentant le pêne demi-tour par rapport à la têtière respectivement dans la position sortie du pêne, le doigt de blocage étant dans sa position rentrée, et dans la position rentrée dudit pêne, le doigt de blocage en position sortie butant sur la surface intérieure de la têtière et maintenant le pêne dans sa position rentrée.

In the accompanying drawings, given solely by way of nonlimiting examples:

• Figure 1 is a simplified elevational view of an embodiment of the lock according to the invention, many components having been removed for clarity of the figure, the flange being in the position which corresponds to the normal position taken out of the latch turn;
• Figure 2 is a view similar to Figure 1, the flange being in the position which corresponds to the retracted position of the latch;
• Figure 3 is a top view, with parts broken away, of the lock of Figure 1;
• Figure 4 is a partial view, with parts broken away, of the lock of Figure 1, taken from the left of this Figure 1 and corresponding to what an observer sees looking at the lock embedded in the thickness of the leaf ,, l the selection element being in the position in which the internal operating member is to the right of the figure;
• Figure 5 is a view similar to Figure 4, the selection member being in its other position;
• Figure 6 is an enlarged view of a detail of Figure 4, the selection element not being shown;
• FIGS. 6A and 6B are views similar to FIG. 6, the selection element being respectively in the positions which it occupies in FIGS. 4 and 5;
• Figure 7 is a right view of Figure 6, with parts broken away;
• ia Figure 8 is an elevational view of the follower located in the left part of Figures 4 and 5 and in the upper part of Figure 3;
• Figures 8A and 8B are respectively left and top views of the follower of Figure 8;
• Figure 9 is an elevational view of the follower located in the right part of Figures 4 and 5 and in the lower part of Figure 3;
• Figures 9A and 9B are respectively left and top views of the follower of Figure 9;
• Figure 10 is a front view of the rack support of the lock according to the embodiment of Figure 3;
• FIGS. 10A, 10B and 10C are respectively views from the right, from above, and a sectional view along XC-XC in FIG. 10A, of the rack support of FIG. 10;
• Figure 11 is a front view of the movable rack member which is inserted in the left part of the support of Figure 10;
• Figures 11A and 11B are respectively a right view and a top view of the movable rack member of Figure 11;
• Figure 12 is a front view of the movable rack member which is inserted in the right part of the support of Figure 10;
• Figures 12A and 12B are respectively a right view and a top view of the movable rack member of Figure 12;
• Figures 13 and 14 are views similar to Figures 1 and 2 respectively, in which there is also shown the control easel of a rod, a deadbolt and a lock barrel;
• Figures 15A, 15B and 15C are views similar to Figure 14 showing an alternative embodiment of the lock according to the invention, the follower being shown respectively in its rest position, its low position and its high position;
• Figure 16 is a schematic elevational view, partially in section, of an embodiment of the respective ends of the two operating squares;
• Figure 17 is a view similar to Figure 16 of an alternative embodiment of the ends of the operating squares;
• Figure 18 is a view similar to Figure 16 of another alternative embodiment of the ends of the operating squares;
• Figures 18A, 18B and 18C are views similar to Figure 18 respectively representing the three components of the assembly of Figure 18;
• Figures 19, 20,21 and 22 are respectively an elevational view, a left view, a partial top view and a sectional view along XXII-XXII in Figure 19, of an embodiment of the half bolt turn of the lock of Figure 1, the slide and the locking finger carried by the slide not being shown;
• FIGS. 19A and 22A are views respectively similar to FIGS. 19 and 22, the locking finger being in its retracted position inside the latch bolt;
• Figures 19B and 22B are views respectively similar to Figures 19 and 22, the locking finger being in its extended position relative to the latch bolt; - Figures 23A and 23B are views similar to Figure 21 with cutaway views of the latch bolt relative to the headrest respectively in the position of the bolt, the locking finger being in its retracted position, and in the retracted position of said bolt, the locking finger in the extended position abutting on the inner surface of the headrest and maintaining the bolt in its retracted position.

There is shown in Figures 1 to 5 a lock, and more specifically a lock-bolt, 1 adapted to be embedded in the thickness of an opening, shown schematically in 2, and to be actuated on each side of said opening 2 by an operating member shown schematically in 3 and a key shown schematically in 4 (see FIGS. 1 and 4), and in authorizing the withdrawal of the latch bolt 5 from the outside only by means of the key 4.

It should be noted that the description below relates to a lock, or lever-lock, or the like, the opening 2 may be a door, a French window, or the like.

As shown in Figures 3, 4 and 5, the lock 1 comprises two pins 6,7 rotatably mounted relative to the same axis 8 and respectively secured to a corresponding operating member 3.

According to the invention, each follower 6,7 is adapted to rotate freely around its axis 8 relative to the other follower 7,6; the U-bolt 5 is integral with a selection element 9 movable in the transverse direction, represented by the double arrow 10 and corresponding to the thickness of the housing 11 of the lock, between two predetermined positions; each follower 6,7 is integral with corresponding means of the lock 1 arranged so as to come into engagement with said selection element 9 when the latter is in its position close to said follower, for actuating the latch bolt 5 when one makes turn said follower 6.7 in a first direction corresponding to the withdrawal of said latch bolt 5, and to remain out of engagement with said selection element 9 when the latter is in its other position.

In the embodiment shown in the figures, each follower 6,7 cooperates with a corresponding flange 12,13 rotatably mounted around the axis 8 of said follower 6,7, and adapted to return the movement of the barrel 14 when the latter is actuated by the key 4. The follower 6,7 further comprises means for driving said flange 12,13 in rotation when the follower 6,7 is rotated in the first direction of withdrawal of the latch 5.

Conventionally, and as shown in particular in Figure 3, the housing 11 has a bottom - here the side wall 17 - of sheet metal folded to form the rear 11a of the housing. The rear 11a is housed at the bottom of the notch formed in the thickness of an opening 2. The housing 11 is closed at the front by the headrest 11b which is generally flush with the edge of the opening, and by the cover 18 which constitutes the second side wall 18 of the housing 11.

To assemble the lock, the constituent elements are thus successively put in place, starting with those located at the bottom 17 and / or at the rear 11a of the housing 11, and ending with those located near the cover 18 and / or the headrest 11b.

Thus, while Figure 3 shows the assembled lock, there is shown in Figure 1 that the flange 12 placed at the bottom of the housing, against the side wall 17 constituting the bottom thereof.

Each flange 12, 13 has at its upper end shown in FIGS. 1 and 2, a finger 15 which engages with the selection element 9 or which remains out of engagement with said selection element 9 depending on whether this element 9 is in its position on the side of the corresponding follower 6.7 or in its other position on the side of the other follower 7.6.

This is shown in more detail in FIGS. 4 and 5, in which the two slugs 6,7 are shown diagrammatically secured respectively, in a conventional manner, to an operating square shown diagrammatically at 16, passing through the leaf 2 and connected to the member. corresponding operating diagram shown in 3. Each flange 12.13 is placed between the corresponding follower 6.7 and the adjacent wall 17.18 of the housing 11 of the lock. As will be seen below, the selection element 9 is secured to a support 19 of the movable bolt.

In the embodiment of Figure 4, the selection element 9 is in its position to the right of the figure, and is driven by the flange 13 located to the right of the figure and controlled by the follower 7 also placed on the right of the figure . It can be seen that the flange 12 located on the left of the figure and controlled by the follower 6 on the left, which then corresponds to the outer face of the opening 2, remains out of engagement with the selection element 9.

In the case of Figure 5, the selection element is in its position to the left of the figure. The flange 12 controlled by the follower 6 located on the left of the figure engages with the selection element 9, while the flange 13 located on the right of the figure and actuated by the follower 7, which then corresponds to the outer face of the opening, remains out of engagement with the selection element 9.

In a conventional manner, the bit, shown diagrammatically at 20 in FIGS. 4 and 5, integral with the barrel 14 actuated by the key 4, is adapted to engage with means respectively integral with the two flanges 12, 13 so as to actuate the latch 5 whatever the position of the selection element 9.

In the embodiment shown in Figures 1 and 2, each flange 12,13 is secured to a corresponding control bracket 21,22. We see in Figures 4 and 5 that each control bracket 21,22 has a lower end 23, folded towards the other control bracket 22,21, that is to say towards the inside of the housing 11. Thus, the bit 20, actuated by the key in the direction of the arrow 24, engages with the two folded ends 23 so as to hoist up the control brackets 21, 22 and thus control the rotation of the two flanges 12,13 for controlling the withdrawal of the latch 5 regardless of the position of the selection element 9.

The support 19 of the U-bolt 5 is shown in detail in FIGS. 6, 6A, 6B and 7.

The support 19 comprises on each of its two lateral faces 26, 27, a guide button 28 which slides in a corresponding groove 29 formed in the adjacent wall 17, 18 of the housing 11. The support is crossed by the tail 30 of the half bolt -turn 5. A spring 31 is housed in a chamber 32 of the support between a front wall 33 of the chamber 32, on the side of the latch bolt 5, and an elastic washer 34 fixed to the rear end of the tail 30.

In its lower part 19a, the support 19 has a cylindrical opening 35 directed in the direction 10 of the thickness of the housing 11 of the lock. The selection element 9 is a cylindrical element adapted to penetrate into the cylindrical opening 35.

We see in Figure 6 that the lower part 19a of the support 19 is narrower than the upper part of said support to allow the passage of the finger 15 of each flange 12,13 between this lower part and the adjacent wall 17,18 of the housing 11 .

It can thus be seen that the axial length of the cylindrical selection element 9 is determined in such a way that, in its right position shown in FIG. 6A or in its left position shown in FIG. 6B, the selection element 9 has a front face which is substantially in contact with the corresponding wall 17,18 of the housing 11, and which thus projects relative to the lower part 19a of the support 19 so as to be engaged with the finger 15 of the corresponding flange 12,13 . On the contrary, the other end face of the element 9 does not protrude out of the lower part 19a of the support 19, and the finger 15 of the other flange 13,12 remains out of engagement with the selection element 9 .

In the retracted position of the latch 5 shown in FIG. 2, the finger 15 of the flange 12 has pushed the support 19 towards the bottom 11 of the housing, to the right of the figure, against the action of a spring antagonist not shown, which will then return the support 19 in a conventional manner, the latch 5, the flange 12, the bracket 21, in their respective normal positions shown in FIG. 1.

To precisely fix the two positions of the selection element 9, this element has on its outer peripheral surface two grooves 36, 37 while the lower part 19a has on its peripheral surface inner two beads 38.39. It can be seen that the grooves 36, 37 and the beads 38, 39 are arranged in such a way that in each of these two positions, the element 9 has a groove, the right groove 37 in FIG. 6A, the left groove 36 in the FIG. 6B, in engagement with the corresponding bead 39, 38, the other bead exerting a wedging effect to avoid any play of the selection element 9.

Advantageously, and as shown in particular in Figures 4 and 5, the housing 11 of the lock has on at least one side wall 17,18 an opening 40 allowing the passage of a small tool for controlling from outside the housing 11 the displacement of the selection element 9 towards the other wall.

• au moyen d'un outil pointu, que l'on introduit par l'arrière du boîtier; sortir complètement le pêne demi-tour 5 dudit boîtier 11 pour le retourner de 180 degrés sur son axe ;
• introduire le même outil dans l'ouverture 40 de la paroi latérale 17,18 du boîtier 11 pour repousser l'élément de sélection 9 vers l'autre paroi 18,17.

To thus select the right or left side corresponding to the outside of the opening, it suffices to carry out the following two simple operations before inserting the lock 1 to embed it in a notch formed in the thickness of an opening 2:

• by means of a pointed tool, which is introduced from the rear of the housing; completely withdraw the latch 5 from said housing 11 to turn it 180 degrees on its axis;
• insert the same tool into the opening 40 of the side wall 17,18 of the housing 11 to push the selection element 9 towards the other wall 18,17.

In the embodiment shown in the figures, the two pins 6,7 are substantially symmetrical to each other with respect to the median plane 41 of the lock 1 perpendicular to the common axis of rotation 8 of the pins 6,7. The two flanges 12, 13 are also substantially symmetrical with respect to said median plane 41 (see in particular Figures 3, 4 and 5).

In the example shown in detail in FIGS. 8, 8A, 8B, 9, 9A and 9B, each follower 6,7 has on its side face 6a, 7a turned towards the side of the adjacent side wall 17,18 of the housing 11, a cylindrical projection 42 which passes through a circular lumen 43 of the corresponding flange 12,13, and a circular lumen 44 of the adjacent side wall 17,18 of the housing 11. This circular protrusion 42 thus allows precise centering of the flange 12,13 by relative to the corresponding follower 6.7, and a precise centering of the follower 6.7 relative to the corresponding wall 17.18.

It can also be seen in the figures that each follower 6,7 has on its cylindrical projection 42 a latching finger 45 extending radially outward from this projection 42.

In a complementary manner, each flange 12,13 comprises at the periphery of its circular lumen 43 a complementary curvilinear lumen 46 adapted to receive the latching finger 45 of the corresponding follower 6,7, and to allow the rotation of the flange 12,13 in the first direction under the action of the latching finger 45 of the corresponding follower 6.7, to control the withdrawal of the latch bolt, without hampering the control of said flange 12.13 from the key 4 for the same surgery.

The lock according to the invention is preferably a lever-lock adapted to actuate at least one control rod 47 whose free end 47a is adapted to penetrate into the keeper 48 of a corresponding annex lock of the frame shown schematically at 49, as it will be explained below with reference to FIGS. 15B and 15C.

For this purpose, each follower 6,7 is adapted to rotate, from its rest position, in the second direction opposite to the first direction, and comprises means adapted to engage with complementary means integral with said rod 47 for control, from the rest position of the follower 6.7, the exit of the rod 47 when the follower 6.7 turns in the second direction, and the withdrawal of the rod 47 when the follower 6.7 turns in the first sense (see below).

The lock thus comprises, for each follower 6,7 an easel 51,52 movable in the longitudinal direction of the rod 47 (arrow 53) and integral with the latter. Each follower 6.7 and the corresponding easel 51.52 comprise respective complementary means for transforming the circular movement of follower 6.7 in one direction or the other into a rectilinear movement of the easel 51.52 in one direction or in the other in the direction of arrow 53.

In the embodiment of FIGS. 8 and 9, the follower 6,7 comprises a wing 54 of peripheral contour in the form of a circular sector 55 limited at its two ends by a tooth 56,57 radially projecting outwards and adapted to drive a Conjugated nipple of the bridge 51.52.

The lock preferably includes means for guiding the rotation of the two pins 6,7 relative to one another.

In the example shown in Figures 8 and 9, the left follower 6 has on its side face 6b opposite the cylindrical projection 42 a circular groove 59. For its part, the right follower 7 has on its side face 7b opposite its projection circular 42 a circular crown 60 adapted to penetrate the interior of the circular groove 59 of the follower 6 for centering and guiding in rotation with precision the two followers 6,7 relative to one another.

Alternatively, one could obviously provide a circular groove on each of the two pins and a ring adapted to penetrate into each of the two grooves.

Of course, each follower 6,7 is conventionally traversed by an axial opening 61 of square section adapted to receive an operating square 16.

To automatically return each actuator and each follower to its rest position after any operation, the lock comprises, for each follower, means adapted to cooperate with a return spring 63 to return the follower 6,7 to its position rest.

• un organe 64,65 monté mobile à l'intérieur du boîtier 11 de la serrure 1 et adapté à se déplacer dans une direction longitudinale lorsque le fouillot 6,7 tourne autour de son axe 8, dans un premier sens contre l'action du ressort de rappel 63, ou dans le sens opposé, sous l'action dudit ressort 63 ;
• des moyens solidaires du fouillot 6,7 adaptés à coopérer avec des moyens complémentaires solidaires de l'organe mobile 64,65 pour transformer un mouvement de rotation du fouillot 6,7 autour de son axe 8 en un mouvement longitudinal de l'organe mobile 64,65 et réciproquement.
  Dans cet exemple, les moyens solidaires du fouillot 6,7 sont des moyens formant pignon 66 centrés sur l'axe 8 du fouillot 6,7 et les moyens complémentaires solidaires de l'organe mobile 64,65 sont une crémaillère 67 en prise avec les moyens formant pignon 66. Les dents du pignon 66 sont donc adaptées à engrener avec les dents de la crémaillère 67 d'une manière connue quelconque.

The lock comprises, for at least one follower, and in the example shown, for each follower 6.7:

• a member 64,65 mounted movable inside the housing 11 of the lock 1 and adapted to move in a longitudinal direction when the follower 6,7 rotates around its axis 8, in a first direction against the action of the spring 63, or in the opposite direction, under the action of said spring 63;
• means secured to the follower 6,7 adapted to cooperate with complementary means secured to the movable member 64,65 to transform a rotational movement of the follower 6,7 around its axis 8 into a longitudinal movement of the movable member 64 , 65 and vice versa.
  In this example, the means integral with the follower 6.7 are pinion means 66 centered on the axis 8 of the follower 6.7 and the complementary means integral with the movable member 64.65 are a rack 67 engaged with the pinion means 66. The teeth of pinion 66 are therefore adapted to mesh with the teeth of rack 67 in any known manner.

In the example shown in Figures 10, 10A to 10C, 11, 11A, 11B, 12, 12A, 12B, the spring 63 is a coil spring extending in the longitudinal direction 68 of the movable members 64 and 65, at l interior of a housing 69 formed in the housing 11, and the movable member 64, 65 comprises at least one projecting element 70 adapted to be engaged with a corresponding end of the spring 63. In the present example, the direction 68 is vertical when the lock is mounted in an opening.

In the present example, each follower 6,7 being adapted to be turned in both directions from its rest position, each movable member 64,65 comprises two projecting elements 70 adapted to be engaged respectively with a corresponding end of the spring 63.

In the example shown, the housings 69 of the two springs 63 are housings arranged one beside the other in a rack support 71 adapted to be placed at the rear of the housing 11 of the lock 1 (see figure 3).

The rack support 71 thus comprises on its dorsal face a plate 72 adapted to fit into a corresponding opening 73 formed at the rear 1a of the housing 11 (See FIG. 3).

The support 71 also includes on each lateral face a tab 74 projecting outwards and adapted to be inserted in a corresponding lumen 75 of the respective wall 17, 18 of the housing 11 (see FIG. 3).

The housings 69 of the springs 63 extend in the direction 68, which is the vertical direction when the lock is in place on an opening, by two upper 76 and lower 77 grooves in which the projecting tabs 70 slide of the movable members 64 and 65.

Each movable member 64, 65 is further guided in its sliding movement by two lateral tabs 78 which move respectively in slots 79 formed in the corresponding side wall 17, 18 of the housing 11. (See FIGS. 1, 2 and 3) .

To facilitate the guiding of the moving elements, each movable member 64, 65 comprises, along the rack 67, on the side of the adjacent side wall 17, 18 of the housing 11, a first clearance 80 for the passage of a web 81 reinforcing the teeth 66 of the corresponding follower 6,7, and a second deeper clearance 82 for the passage of the corresponding flange 12,13.

We have thus described an original sub-assembly for recalling a follower in its waiting position. This space-saving, very reliable sub-assembly has the advantage of completely freeing the part of the lock at the front of the squares of the diggers and of being able to be housed at the rear of the squares in an available area of the housing.

FIG. 13 shows the bracket 21 for controlling the flange 12, which makes it possible to control the flange 12 from the key 4. Also shown is the deadbolt 84 in its extended position, this bolt being operated at way of the key. The bridge 51 has also been shown. The bracket 21 and the flange 12 are in the position corresponding to the rest position of the lock, latch 5 normally released. In the situation represented in FIG. 14, the deadbolt 84 has been retracted by means of a turn key, then an additional operation of the key made it possible to exert an upward force against the lower end of the bracket 21 (arrow 24), which caused the flange 12 to rotate clockwise at the figure to obtain the withdrawal of the latch bolt.

FIGS. 15A, 15B and 15C show another embodiment according to which each follower 6,7 comprises a wing having a notch 85 directed radially in which slides a stud 86 adapted to also slide in a slot 87 of the bridge 51,52 corresponding. The light 87 extends in the longitudinal direction of the rod 47, that is to say the vertical direction in the figures, and has a length which corresponds to the idle stroke necessary to allow the return of the follower 6.7 in its rest position after an actuation operation of the rod 47 without causing displacement of the latter, this return being effected by the action of the springs 63 pushing the racks 67 which mesh with the pinions 66 of the pins 6,7.

FIGS. 16 to 18 and 18A to 18C show various embodiments of the opposite ends of the two squares or rather semi-squares 16 which must be made integral with one another in the longitudinal direction of the axis 8, while remaining free to rotate relative to each other.

In the embodiment of FIG. 16, the end of the right-hand half-square 16a is configured as a male element 89 adapted to be introduced and to be embedded in the other end 16b which is configured as a female element 90 of conjugate shape that of the male element 89.

The male 89 and female 90 configurations are of revolution around the common axis 8.

In the embodiment of FIG. 17, each half-square end 16b has a female configuration 90, and an assembly element 91 comprising at each axial end a male configuration 89 is interposed axially between the two ends 16b.

In the embodiment of FIGS. 18 and 18A to 18C, the right-hand half-square 16c, represented in FIG. 18C, comprises, from the left, a first cylindrical recess 92, of short axial length, followed by a second cylindrical recess 93, the internal cylindrical wall of which is tapped.

The half-square 16d on the left, shown in FIG. 18B, has at its right end a crown 94 adapted to penetrate inside the first cylindrical recess 92, and is pierced over its entire length with an axial bore 95. A screw 96 has a cylindrical body 97 adapted to penetrate inside the bore 95, which is extended by a threaded end 98 adapted to be screwed into the thread of the cylindrical recess 93. The screw 96 has a head 99 of square section identical to the section of the operating squares 16. The square head 99 is adapted to be inserted, at the same time as the left end of the left half-square 16d, inside the recess of complementary square section of an operating member 3, so that the screw 96 does not cannot rotate with respect to said square 16d on the left. Furthermore, the threaded cylindrical recess 93 and the threaded end 98 allow free rotation of one of the half-squares 16c, 16d relative to the other 16d, 16c, in one direction or the other, by the angle corresponding to the normal rotation of an operating member.

The lock according to the present invention can be equipped with a device allowing the user of said lock to exit without his key by prohibiting the closing and locking of the door by the latch bolt, which would condemn him to stay at outside.

To this end, the lock comprises means for manually blocking the latch bolt 5 relative to the headrest 11b in a retracted position of said bolt 5 inside the housing 11 of the lock. The U-bolt 5 thus blocked cannot return to its extended position to lock the opening and prevent the opening of said opening from the outside without using the key. We can thus give the grooves 29 formed in the side walls 17,18 of the housing 11, which hold and guide the buttons 28 of the support 19 of the latch bolt, towards the rear 11a of the housing, a width slightly greater than the width normal of said grooves and a length slightly greater than that necessary to bring the latch bolt into its normal retracted position flush with the external surface 101 of the headrest 11b, as shown in FIG. 2.

It then suffices for a user to push the latch bolt 5 towards the inside of the housing 11, so that the edge 103 of the bevel 104 of the latch bolt 5 reaches behind the interior surface 102 of the headrest 11b. The user can then urge the bevel 104 up or down so that the corresponding end of the edge 103 of the bevel 104 abuts against the interior surface 102 of the headrest 11b. It then suffices to actuate the operating member or to intervene manually on the latch 5 to release it which then resumes its normal position and function.

In the embodiment shown in Figures 19, 19A, 19B, 20, 21, 22, 22A, 22B, 23A and 23B, the latch bolt 5 present on its bevel 104, in the vicinity of the edge 103 thereof, a cavity 105 extending over a median part of the height of said bevel 104 (see FIGS. 19, 20, 21 and 22). This cavity 105 receives a slide 106 extending over only part of the height of said cavity 105 and movable inside said cavity 105 in the direction of the height thereof (see FIGS. 19A and 19B, 22A and 22B, the vertical direction when the lock is mounted on an opening leaf. In the example shown, the slider 106 has a cross section such that it completely fills the cavity 105 by reconstituting with its bevel 110 the bevel 104 of the latch bolt 5 (see in particular Figures 23A and 23B).

The cavity 105 communicates with a second cavity 107 extending from the cavity 105 in the direction of the height of the bevel 104 and formed in the mass of the bolt 5 up to the outer surface 109 of the latter. The slide 106 carries a finger 108 adapted to slide in said second cavity 107 when the slide 106 slides in the first cavity 105. As shown in particular in FIGS. 19A, 19B, 22A and 22B, the length of the finger 108 is such that the finger 108 is flush with the corresponding surface 109 of the U-bolt 5 when the slider 106 is in its position remote from the second cavity 107 (FIGS. 19A and 22A), and protrudes relative to said surface 109 when the slider 106 is in its close position of the second cavity 107, so as to abut on the inner surface 102 of the headrest 11b, as shown in Figures 2 and 23B.

The surface 110 forming the bevel of the slide 106 is roughened in any known manner, for example by means of ridges. To block the latch bolt 5 inside the housing 11, a user just has to push the latch bolt towards the interior of the housing, and to urge the rough surface 110 of the slide 106 upwards to make slide the latter upwards and bring out the finger 108 relative to the corresponding surface 109 of the bolt 5 so that it comes to abut on the internal surface 102 of the headrest 11b.

To return the bolt 5 to its normal position and function, it suffices to carry out the reverse maneuver, to push the bolt 5 slightly towards the inside of the housing 11, and to press down the rough surface 110 of the slide 106 , to bring finger 108 inside the bolt 5.

• tous les éléments constituants de la serrure peuvent être logés à l'intérieur d'un boîtier de dimension classique, aussi bien en ce qui concerne l'épaisseur que l'entre axe entre l'axe 8 des fouillots et l'axe du barillet 14 ;
• cette serrure est très facilement réversible : deux manoeuvres très simples permettent de l'adapter, lors du montage, aux côtés respectifs de l'ouvrant correspondant à l'extérieur et à l'intérieur de celui-ci ;
• l'organe de manoeuvre intérieur tourné dans un sens correspondant au retrait du pêne demi-tour permet le retrait des tringles des serrures annexes, éventuellement le retrait d'un pêne dormant par l'intermédiaire d'une rainure ménagée dans le chevalet, et bien entendu le retrait du pêne demi-tour ;
• en faisant tourner dans le sens opposé l'organe de manoeuvre intérieur, on fait sortir les tringles des serrures annexes, le cas échéant un pêne dormant. Ces éléments peuvent être bloqués dans cette position par un verrou actionné au moyen du barillet commandé par la clé ;
• l'organe de manoeuvre extérieur permet toutes ces fonctions, à l'exclusion du retrait du pêne demi-tour ;
• on peut effectuer toutes ces manoeuvres à partir de la clé d'un côté ou de l'autre de l'ouvrant;
• on peut bloquer le pêne demi-tour 5 dans sa position rentrée à l'intérieur du boîtier 11 par appui sur la surface intérieure 102 de la têtière 11b : le pêne demi-tour 5 ne peut plus verrouiller la porte en position fermée, de sorte qu'il est possible à un usager de sortir sans sa clé.

There has thus been described above with reference to the figures, a lock, or a bolt lock, having the characteristics and fulfilling the following functions:

• all the constituent elements of the lock can be housed inside a housing of conventional size, both with regard to the thickness as well as the inter-axis between the axis 8 of the nut and the axis of the barrel 14 ;
• this lock is very easily reversible: two very simple operations make it possible to adapt it, during assembly, to the respective sides of the opening corresponding to the exterior and to the interior thereof;
• the internal operating member turned in a direction corresponding to the withdrawal of the latch bolt allows the withdrawal of the rods of the annexed locks, possibly the withdrawal of a deadbolt via a groove made in the bridge, and indeed heard the withdrawal of the latch bolt;
• by rotating the inner operating member in the opposite direction, the rods are released from the annexed locks, if necessary a deadbolt. These elements can be locked in this position by a lock actuated by means of the barrel controlled by the key;
• the external operating member allows all these functions, excluding the withdrawal of the latch bolt;
• one can carry out all these maneuvers from the key on one side or the other of the opening;
• the latch 5 can be locked in its retracted position inside the housing 11 by pressing on the internal surface 102 of the faceplate 11b: the latch 5 can no longer lock the door in the closed position, so that it is possible for a user to exit without their key.

In the above description, the lights conventionally have a predetermined respective angular or rectilinear dimension so as to allow a stroke at least equal to the movement of the locking members (deadbolt, U-bolt, rods) for the two operations locking and unlocking, a corresponding stroke of the operating members, and independent operation of each of each operating member and the key.

Of course, the present invention is not limited to the embodiments which have just been described, and many changes and modifications can be made to them without departing from the scope of the invention.

In particular, the present lock, or lever-lock, which is adapted to be embedded in the thickness of an opening, can also be mounted in any other way on said opening.

It is obviously possible to replace displacements in the height direction of the housing with displacements in the width direction thereof, between the rear and the headrest, or by rotational displacements.

Claims (20)

Lock (1) adapted to be embedded in the thickness of an opening (2), to be actuated on each side of said opening (2) by an operating member (3) and a key (4), and to n ' authorize the withdrawal of the latch bolt (5) from the outside only by means of the key (4), this lock (1) comprising two spindles (6,7) rotatably mounted relative to the same axis ( 8) and respectively secured to a corresponding operating member (3), characterized: - in that each follower (6,7) is adapted to rotate freely around its axis (8) relative to the other follower (7,6), - in that the latch bolt (5) is integral with a selection element (9) movable in the transverse direction (10) corresponding to the thickness of the housing (11) of the lock (1) between two positions predetermined, - And in that each follower (6,7) is integral with corresponding means (12,13) of the lock (1) arranged so as to come into engagement with said selection element (9) when the latter is in its position close to said follower (6,7) for actuating the latch bolt (5) when said follower (6,7) is turned in a first direction corresponding to the withdrawal of said latch bolt (5), and to remain out of engagement with said selection element (9) when the latter is in its other position close to the other follower (7,6). Lock according to claim 1, characterized: - in that each follower (6,7) cooperates with a corresponding flange (12,13) rotatably mounted around the axis (8) of said follower (6,7) and adapted to return the movement of the barrel (14 ) when the latter is actuated by the key (4), and comprises means for driving said flange (12,13) in rotation when said follower (6,7) is rotated in said first direction of withdrawal of the half bolt tower (5), - in that each flange (12,13) comprises a finger (15) which engages with the selection element (9) or which remains out of engagement with said selection element (9) depending on whether said element (9 ) is in its position on the side of the corresponding follower (6,7) or in its other position. Lock according to claim 2, characterized in that the bit (20) integral with the barrel (14) actuated by the key (4) is adapted to engage with means (23) respectively integral with the two flanges (12,13) of so as to activate the latch bolt (5) regardless of the position of the selection element (9). Lock according to one of claims 1 to 3, characterized in that the housing (11) of the lock (1) has on at least one side wall (17,18) an opening (40) allowing the introduction of a tool for controlling the movement of the selection element (9) towards the other wall (18,17). Lock according to claim 2 or one of the claims dependent thereon, characterized: - in that the two pins (6,7) are substantially symmetrical to each other with respect to the median plane (41) of the lock (1) perpendicular to the axis of rotation (8) common of the pins ( 6,7), - in that the two flanges (12, 13) are also substantially symmetrical with respect to said median plane (41), and - in that each follower (6,7) has, on its side face turned towards the side of the side wall (17,18) adjacent to the housing (11) of the lock (1), a cylindrical projection (42) having for axis the axis (8) of the follower (6,7), this cylindrical projection (42) passing through a circular lumen (43) of the corresponding flange (12,13). Lock according to claim 5, characterized in that the cylindrical projection (42) also passes through a circular lumen (44) of the side wall (17,18) adjacent to the housing (11) of the lock (1). Lock according to claim 5 or 6, characterized in that it comprises means (59,60) for guiding in rotation the two pins (6,7) relative to each other. Lock according to claim 5, 6 or 7, characterized in that each follower (6,7) has on its cylindrical projection (42) a latching finger (45) extending radially outward from this projection (42 ), and in that each flange (12,13) comprises at the periphery of its circular lumen (43) a curvilinear lumen (46) complementary adapted to receive said gripping finger (45) and to allow rotation of the flange (12,13) in the first direction under the action of the finger (45) of the corresponding follower (6,7) without interfering with the control of the flange (12,13) from the key (4). Lock according to one of claims 1 to 8, this lock being a lever-lock (1) adapted to actuate at least one rod (47) adapted to penetrate into its extended position in the keeper (48) of an annexed lock, characterized in that each follower (6,7) is adapted to rotate, from its rest position, in the second direction opposite to said first direction, and comprises means adapted to engage with complementary means integral with said rod (47) for controlling, from the rest position of the follower (6,7), the exit of the rod (47) when the follower (6,7 ) rotates in said second direction, and the withdrawal of the rod (47) when the follower (6,7) rotates in said first direction. Lock according to claim 9, characterized in that it comprises for each follower (6,7) an easel (51,52) movable in the longitudinal direction (53) of the rod (47) and integral with the latter, and in that each follower (6,7) and the corresponding easel (51,52) comprise respective complementary means for transforming the circular movement of the follower (6,7) in one direction or the other into a rectilinear movement of the easel (51,52) one way or the other. Lock according to claim 10, characterized in that the follower (6,7) comprises a wing (54) of peripheral contour in the form of a circular sector (55) limited at its two ends by a radially projecting tooth (56,57) outwards and adapted to drive a stud (58) of the bridge (51,52). Lock according to claim 10, characterized in that each follower (6,7) comprises a wing having a notch (85) directed radially in which slides a stud (86) adapted to slide in a slot (87) of the easel (51, 52) corresponding which extends in the longitudinal direction (53) of the rod (47), the length of this light (87) corresponding to the idle stroke necessary to allow the return of the follower (6,7) in its position rest after an actuation operation of the rod (47) without causing displacement of the latter. Lock according to one of claims 1 to 12, comprising, for each follower (6,7), means (64,65) adapted to cooperate with a return spring (63) to return the follower (6,7) in its rest position, characterized in that it comprises, for at least one follower (6,7). - A member (64,65) mounted movable inside the housing (11) of the lock (1) and adapted to move in a longitudinal direction (68) when the follower (6,7) rotates around its axis (8), in a first direction against the action of said return spring (63), or in the opposite direction, under the action of said spring (63), - Means (66) integral with the follower (6,7) adapted to cooperate with complementary means (67) integral with the movable member (64,65) to transform a rotational movement of the follower (6,7) around its axis (8) in a longitudinal movement of the movable member (64,65) and vice versa. Lock according to claim 13, characterized in that the means (66) integral with the follower (6,7) are pinion means (66) centered on the axis (8) of said follower (6,7), and in that that the complementary means (67) integral with the movable member (64, 65) are a rack (67) engaged with the pinion means (66). Lock according to claim 13 or 14, characterized in that the spring (63) is a coil spring (63) extending in said longitudinal direction (68) inside a housing (69) formed in said housing (11), and in that the movable member (64, 65) comprises at least one projecting element (70) adapted to be engaged with a corresponding end of the spring (63). Lock according to claim 15, the follower (6,7) being adapted to be turned in both directions from its rest position, characterized in that the movable member (64,65) comprises two elements (70) in projection adapted to be engaged respectively with a corresponding end of the spring (63) associated therewith. Lock according to any one of claims 1 to 16, characterized in that it comprises means for manually blocking the latch bolt (5) relative to the internal surface (101) of the headrest (11b) in a position retracted inside the housing (11) of the lock (1). Lock according to claim 17, characterized in that the bolt (5) has on its bevel (104), a cavity (105) extending over a median part of the height of said bevel (104), and in that this cavity (105) receives a slide (106) extending over only part of the height of said cavity (105) and movable inside said cavity (105) in the direction of the height thereof. Lock according to claim 18, characterized in that the slide (106) has a cross section such that it completely fills the cavity (105) by reconstituting with its bevel (110) the bevel (104) of the latch bolt (5 ). Lock according to claim 18 or 19, characterized in that the cavity (105) communicates with a second cavity (107) extending in the direction of the height of the bevel (104) and formed in the mass of the bolt (5) up to '' on the outer surface (109) thereof, and in that the slide (106) carries a finger (108) adapted to slide in said second cavity (107) when the slide (106) slides in the first cavity ( 105), the length of the finger (108) being such that the finger (108) is flush with the corresponding surface (109) of the bolt (5) when the slide (106) is in its position remote from the second cavity (107) and projects relative to said surface (109) of the bolt (5) when the slide (106) is in its position close to the second cavity ( 107), so as to abut on the inner surface (102) of the headrest (11b).

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