EP0801193B1 - 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 a operating device and / or a key, and not to authorize the withdrawal of the latch bolt from the outside only by means of the key, this lock comprising two followers rotatably mounted relative to the same axis and integral respectively of a corresponding operating member.

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

We know many examples of the production of locks of this type. type, which in general are also bolts and bolts suitable for ordering from both a latch bolt, a deadbolt and at least one control rod.

We know that in this type of lock, the mechanical parts or the lock functions are not controlled in the same way depending on whether the user is inside or outside the opening equipped with such lock. The objective is indeed to obtain a locking of the opening from the moment when the user leaves the room accessible by this opening. It's about getting inviolability of the lock for a third party located outside the opening and who would not have of the key. Only the key is used to unlock the door. It's the U-bolt which locks the door. Such locks equip usually landing doors.

Such a lock is described for example in FR-A-2 657 385 in the name of the Applicant. This lock has a classic follower of the internal operating member, and which performs all the functions of a classic locking bolt. It also comprises a second follower secured to the external operating member, which is adapted to engage with the square of operation of the first follower by means of coupling means arranged in such a way that the follower secured to the operating member outside must turn a certain angle when empty in one direction or the other before to be able to train the main follower. This no-load rotation prohibits the maneuvering the latch bolt from the external operating member.

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

We also know other locks of the aforementioned type comprising two classic diggers. These locks have a thickness greater than that of classic locks so that they cannot be embedded in the notch usually arranged in the thickness of an opening. This requires either increase the thickness of the notch, which reduces the resistance of the sash, i.e. carry out functions outside the lock, for example in the cleaning plates whose mechanical elements cannot be housed in the housing classic size 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 allows to house all the mechanisms of a such lock inside a case of conventional thickness.

• 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 boítier de la serrure entre deux positions prédéterminées,
• chaque fouillot coopère avec des 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 integral with a movable selection element in the transverse direction corresponding to the thickness of the housing of the lock between two predetermined positions,
• each follower cooperates with corresponding means of the lock arranged so as to engage 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, move the selection element from one to the other of its two positions to authorize the withdrawal of the latch bolt by means of the only nut corresponding to the operation located on the inside of the door.

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 rotating said follower in said first direction of withdrawal of the latch, and in that each flange has a finger which engages with the selection item or that remains out of touch with said selection item selection according to whether said element is in its position on the side of the follower correspondent or in his other position.

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

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

According to a preferred version of the invention, each follower has a radially extending latching finger on its cylindrical projection towards the outside of this projection, and each flange has on the periphery of its circular light a complementary curvilinear light adapted to receive said hooking finger and allow the flange to rotate 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 cut 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, 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;
• FIGS. 23A and 23B are views similar to FIG. 21 with cutaway views of the latch bolt relative to the headrest respectively in the position of the latch bolt, the blocking 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 holding the bolt in its retracted position.

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

It should be noted that the description below relates to a lock, or cremone bolt, or the like, the leaf 2 being able to be a door, a French window, or the like.

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

According to the invention, each follower 6,7 is adapted to turn freely around its axis 8 with respect 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 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, to activate the latch 5 when turning said follower 6.7 in a first direction corresponding to the withdrawal of said 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 this is actuated by the key 4. The follower 6,7 furthermore comprises means to cause said flange 12,13 to rotate when the follower 6,7 is rotated in the first direction of withdrawal of the latch 5.

Conventionally, and as shown in particular in the 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, we successively put in place the constituent elements thereof, 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 FIG. 3 represents the assembled lock, there is no shown in Figure 1 that the flange 12 placed at the bottom of the housing, against the wall lateral 17 constituting the bottom thereof.

Each flange 12,13 has at its upper end shown in Figures 1 and 2, a finger 15 which engages the element of selection 9 or which remains out of touch 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 Figures 4 and 5, in which are shown diagrammatically, the two casts 6,7 secured respectively, so classic, of an operating square shown schematically in 16, crossing the opening 2 and connected to the corresponding operating member shown diagrammatically 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 integral of a support 19 of the movable bolt.

In the embodiment of FIG. 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 to the right of the figure. We sees 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 sash 2, remains out of taken with the selection element 9.

In the case of FIG. 5, the selection element is in its position to the left of the figure. The flange 12 controlled by the follower 6 located to the left of the figure engages the selection element 9, while the flange 13 located to 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 element selection 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 suitable for engaging with means respectively secured to the two flanges 12,13 so as to activate 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 square 21.22. We see at Figures 4 and 5 that each control bracket 21,22 has one end lower 23, folded towards the other control square 22,21, i.e. towards inside the housing 11. Thus, the bit 20, actuated by the key in the direction of the arrow 24, comes into engagement with the two folded ends 23 so as to hoist upwards the control brackets 21,22 and thereby controlling the rotation of the two flanges 12,13 to control the withdrawal of the latch 5 whatever the position of the selection element 9.

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

The support 19 has 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 latch bolt 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 U-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 an opening cylindrical 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.

It can be seen in FIG. 6 that the lower part 19a of the support 19 is narrower than the upper part of said support to allow the passage of finger 15 of each flange 12.13 between this lower part and the wall 17.18 adjacent to the housing 11.

It can thus be seen that the axial length of the selection element cylindrical 9 is determined in such a way that in its right position represented in FIG. 6A or in its position on the left represented 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 from the lower part 19a of the support 19 to be engaged with the finger 15 of the flange 12.13 corresponding. On the contrary, the other end face of the element 9 does not protrusion from 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 U-bolt 5 shown in the figure 2, the finger 15 of the flange 12 has pushed the support 19 towards the bottom 11 of the box, to the right of the figure, against the action of a non-opposing spring shown, which will then bring back in a conventional manner the support 19, the latch turn 5, the flange 12, the bracket 21, in their respective normal positions shown in Figure 1.

To precisely fix the two positions of the element selection 9, this element has two grooves on its external peripheral surface 36.37 while the lower part 19a has on its peripheral surface inner two beads 38.39. We see 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 on the 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 to control from outside the case 11 the movement of the selection element 9 towards the other wall.

• au moyen d'un outil pointu, que l'on introduit par l'arrière du boítier; sortir complètement le pêne demi-tour 5 dudit boítier 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 boítier 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 remove the latch 5 from said housing 11 to turn it 180 degrees on its axis;
• introduce 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 spindles 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. Both flanges 12,13 are also substantially symmetrical with respect to said plane median 41 (see in particular Figures 3, 4 and 5).

In the example shown in detail in Figures 8, 8A, 8B, 9, 9A and 9B, each follower 6,7 has on its lateral 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 light 43 of the corresponding flange 12,13, and a light circular 44 of the adjacent side wall 17,18 of the housing 11. This projection circular 42 thus allows precise centering of the flange 12,13 relative to the corresponding follower 6.7, and precise centering of follower 6.7 relative to the corresponding wall 17.18.

We also see in the figures that each follower 6,7 has on its cylindrical projection 42 a latching finger 45 extending radially towards the outside of this projection 42.

In addition, each flange 12,13 comprises at the periphery of its circular light 43 a complementary curvilinear light 46 adapted to receive the hooking finger 45 of the corresponding follower 6,7, and to allow the flange 12,13 to rotate in the first direction under the action of the finger hooking 45 of the corresponding follower 6.7, to control the withdrawal of the bolt U-turn, without interfering with the control of said flange 12,13 from key 4 to the same operation.

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 enter the keeper 48 of a corresponding auxiliary lock of the frame shown schematically in 49, as will be explained below with reference to Figures 15B and 15C.

For this purpose, each follower 6,7 is adapted to turn, from its rest position, in the second direction opposite to the first direction, and includes adapted means to engage with complementary means 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 turns in the second direction, and the withdrawal of the rod 47 when the follower 6.7 turns in the first direction (see below).

The lock thus comprises, for each follower 6.7 a bridge 51.52 movable in the longitudinal direction of the rod 47 (arrow 53) and in solidarity with it. Each follower 6.7 and the corresponding bridge 51.52 include respective complementary means to transform the circular movement of the follower 6.7 in one direction or the other in one rectilinear movement of the bridge 51,52 in one direction or the other in the direction of arrow 53.

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

The lock preferably comprises means for ensuring the guiding in rotation of the two pins 6,7 relative to each other.

In the example shown in Figures 8 and 9, the left follower 6 has a groove on its side face 6b opposite the cylindrical projection 42 circular 59. For its part, the right follower 7 has on its lateral face 7b opposite its circular projection 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 with respect to each other.

Alternatively, one could obviously provide a circular groove on each of the two nuts and a ring adapted to penetrate 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 a square of operation 16.

To automatically return each actuator and each follower in its rest position after any maneuver, the lock comprises, for each follower, means adapted to cooperate with a return spring 63 to return the follower 6.7 to its rest position.

• un organe 64,65 monté mobile à l'intérieur du boítier 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 FIGS. 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, inside a housing 69 formed in the housing 11, and the movable member 64,65 comprises at least one protruding element 70 adapted to be engaged with a corresponding end of the spring 63. In this example, direction 68 is vertical when the lock is mounted in an opening.

In the present example, each follower 6,7 being adapted to be rotated in both directions from its rest position, each movable member 64.65 has 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 side by side 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 has on its dorsal face a plate 72 adapted to fit into a corresponding opening 73 formed at the rear 1 of the housing 11 (See Figure 3).

The support 71 also has on each side face a tab 74 projecting outwards and adapted to fit into a light 75 corresponding to the respective wall 17.18 of the housing 11 (See Figure 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, for two upper 76 and lower 77 grooves in which the protruding legs 70 of the movable members 64 and 65.

Each movable member 64, 65 is further guided in its sliding movement by two lateral legs 78 which move respectively in openings 79 made in the side wall 17,18 corresponding to the housing 11. (See Figures 1, 2 and 3).

To facilitate the guidance of moving parts, each movable member 64, 65 comprises, along the rack 67, on the side of the wall adjacent side 17.18 of the housing 11, a first clearance 80 for the passage a veil 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 subset recalling a follower in its waiting position. This space-saving, very reliable sub-assembly has the advantage of completely clearing the part of the lock at the front of the squares of be 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. We have also shown the deadbolt 84 in its extended position, this bolt being operated by means of the key. The easel 51 has also been shown. The bracket 21 and the flange 12 are in the position corresponding to the position of rest of the lock, latch bolt 5 normally extended. In the situation shown in Figure 14, the deadbolt 84 has been retracted by means of a key, then a complementary operation of the key allowed to exert a force directed upwards against the lower end of the bracket 21 (arrow 24), which has caused the flange 12 to rotate clockwise in the figure to obtain removing the latch bolt.

FIGS. 15A, 15B and 15C show another mode of 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 slide also in a lumen 87 of the corresponding easel 51.52. Light 87 extends in the longitudinal direction of the rod 47, i.e. the direction vertical to the figures, and has a length which corresponds to the empty stroke required to allow the follower 6,7 to return to its rest position after a actuation of the rod 47 without causing displacement of this last, this return being effected by the action of the springs 63 pushing the racks 67 which mesh with the pinions 66 of the nuts 6,7.

Figures 16 to 18 and 18A to 18C show various modes of realization 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 axis 8, while remaining free to rotate relative to one another.

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

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

In the embodiment of Figure 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 inserted axially between the two ends 16b.

In the embodiment of FIGS. 18 and 18A to 18C, the half-square 16c on the right, 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 threaded.

The left half-square 16d, represented in FIG. 18B, presents 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 suitable to be inserted, at the same time as the left end of the half-square 16d from left, inside the recess of a square section complementary to a operating member 3, so that the screw 96 cannot rotate relative to said square 16d on the left. Furthermore, the threaded cylindrical recess 93 and the end threaded 98 allow free rotation of one of the half-squares 16c, 16d relative to to the other 16d, 16c, in one direction or the other, by the angle corresponding to the normal rotation of an actuator.

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 closing and locking of the door by the latch bolt, which condemn to stay outside.

To this end, the lock includes means for blocking manually the latch 5 with respect to the headrest 11b in a position reentry 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 door and prohibit 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 box 11, which hold and guide the buttons 28 of the support 19 of the latch bolt, 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 the figure 2.

A user just has to push the latch 5 towards inside the housing 11, so that the edge 103 of the bevel 104 of the latch 5 arrives behind the interior surface 102 of the headrest 11b. The user can then press the bevel 104 up or down so that the end corresponding to the edge 103 of the bevel 104 abuts against the surface interior 102 of the headrest 11b. Then just activate the operating device or to manually intervene on the latch 5 to release it which then resumes its normal position and function.

In the embodiment shown in FIGS. 19, 19A, 19B, 20, 21, 22, 22A, 22B, 23A and 23B, the latch 5 presents on its bevel 104, in the vicinity of the edge 103 thereof, a cavity 105 extending over a middle part of the height of said bevel 104 (see Figures 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 height direction thereof (see Figures 19A and 19B, 22A and 22B, the vertical direction when the lock is mounted on an opening. In the example shown, the slide 106 has a cross section such that it fills completely the cavity 105 by reconstituting with its bevel 110 the bevel 104 of the U-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 to the outer surface 109 thereof. Slide 106 wears 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 finger 108 is flush with the corresponding surface 109 of the latch 5 when the slide 106 is in its position remote from the second cavity 107 (Figures 19A and 22A), and protrudes from said surface 109 when the slide 106 is in its position close to the second cavity 107, so that 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 made rough in any known manner, for example by means of streaks. For block the latch 5 inside the housing 11, a user just needs to push the latch bolt towards the inside of the case, and to solicit the surface rough 110 of the slide 106 upwards to slide the latter towards the top and bring out the finger 108 relative to the corresponding surface 109 of the bolt 5 so that it comes up against the inner surface 102 of the headrest 11b.

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

• tous les éléments constituants de la serrure peuvent être logés à l'intérieur d'un boítier 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 boítier 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 nuts 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;
• we can block the latch 5 in its retracted position inside the housing 11 by pressing on the inner surface 102 of the headrest 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 description above, the lights have conventionally 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 locking operations and unlocking, a corresponding stroke of the operating members, and a independent operation of each operating member and the key.

Of course, the present invention is not limited to the modes of realization that we have just described, and we can bring to these many changes and modifications without departing from the scope of the invention.

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

We can obviously replace displacements in the direction of the height of the case by displacements in the direction of the width of this one, between the rear and the headrest, or by rotational movements.

Claims (20)

1. Lock (1) designed to be set into the thickness of an opening leaf (2), to be operated from each side of the said opening leaf (2) using an operating member (3) and/or a key (4), and to allow the latch bolt (5) to be drawn back from the outside only using the key (4), this lock (1) comprising two followers (6, 7) mounted so that they can rotate with respect to one same axis (8) and secured respectively to a corresponding operating member (3), characterized:

   in that each follower (6, 7) is designed to rotate freely about its axis (8) with respect to the other follower (7, 6),

   in that the latch bolt (5) is secured to a selector element (9) which can move in the transverse direction (10) corresponding to the thickness of the case (11) of the lock (1) between two predetermined positions,

   and in that each follower (6, 7) collaborates with corresponding means (12, 13) of the lock (1) which are arranged in such a way as to engage with the said selector element (9) when the latter is in its position close to the said follower (6, 7) so as to operate the latch bolt (5) when the said follower (6, 7) is rotated in a first direction corresponding to the drawing back of the said latch bolt (5) and so as to remain out of engagement with the said selector element (9) when the latter is in its other position close to the other follower (7, 6).
2. Lock according to Claim 1, characterized:

   in that each follower (6, 7) collaborates with a corresponding cheek plate (12, 13) mounted so that it can rotate, about the axis (8) of the said follower (6, 7), and designed to transmit the movement of the barrel (14) when the barrel is operated by the key (4), and comprises means for driving the rotation of the said cheek plate (12, 13) when the said follower (6, 7) is turned in the said first direction for drawing back the latch bolt (5),

   in that each cheek plate (12, 13) has a finger (15) which engages with the selector element (9) or which remains out of engagement with the said selector element (9) depending on whether the said element (9) is in its position on the same side as the corresponding follower (6, 7) or in its other position.
3. Lock according to Claim 2, characterized in that the bit (20) secured to the barrel (14) operated by the key (4) is able to engage with means (23) secured respectively to the two cheek plates (12, 13) so as to operate the latch bolt (5) irrespective of the position of the selector element (9).
4. Lock according to one of Claims 1 to 3, characterized in that the case (11) of the lock (1) comprises, on at least one side wall (17, 18), an opening (40) allowing the insertion of a tool for moving the selector element (9) towards the other wall (18, 17).
5. Lock according to Claim 2 or one of Claims 3 and 4, characterized:

   in that the two followers (6, 7) are roughly symmetric one with respect to the other with respect to the mid-plane (41) of the lock (1) perpendicular to the common axis (8) of rotation of the followers (6, 7),

   in that the two cheek plates (12, 13) are also roughly symmetric with respect to the said mid-plane (41), and

   in that each follower (6, 7) has, on its side face which faces the adjacent side wall (17, 18) of the case (11) of the lock (1), a cylindrical projection (42), the axis of which is the axis (8) of the follower (6, 7), this cylindrical projection (42) passing through a circular opening (43) in the corresponding cheek plate (12, 13).
6. Lock according to Claim 5, characterized in that the cylindrical projection (42) also passes through a circular opening (44) in the adjacent side wall (17, 18) of the case (11) of the lock (1).
7. Lock according to Claim 5 or 6, characterized in that it comprises means (59, 60) for guiding the rotation of the two followers (6, 7) one with respect to the other.
8. Lock according to Claim 5, 6 or 7, characterized in that each follower (6, 7) has, on its cylindrical projection (42), a catching finger (45) extending radially towards the outside of this projection (42), and in that each cheek plate (12, 13) has, at the periphery of its circular opening (43), a complementary curved opening (46) designed to accommodate the said catching finger (45) and to allow the cheek plate (12, 13) to be rotated in the first direction under the action of the finger (45) of the corresponding follower (6, 7) without impeding the operation of the cheek plate (12, 13) using the key (4).
9. Lock according to one of Claims 1 to 8, this lock being a casement bolt (1) designed to operate at least one rod (47) designed, in its deployed position, to enter the keeper (48) of an additional lock, characterized in that each follower (6, 7) is designed to turn, starting from its rest position, in the second direction which is the opposite of the said first direction, and has means designed to engage with complementary means secured to the said rod (47) so as, starting from the rest position of the follower (6, 7), to cause the rod (47) to deploy when the follower (6, 7) turns in the said second direction, and draw the rod (47) back when the follower (6, 7) turns in the said first direction.
10. Lock according to Claim 9, characterized in that it comprises, for each follower (6, 7), a rest (51, 52) which can move in the longitudinal direction (53) of the rod (47) and which is secured to the latter, and in that each follower (6, 7) and the corresponding rest (51, 52) comprise complementary respective means for converting the circular movement of the follower (6, 7) in one direction or the other into a rectilinear movement of the rest (51, 52) in one direction or the other.
11. Lock according to Claim 10, characterized in that the follower (6, 7) comprises a flange (54) the peripheral outline of which is in the shape of a circular sector (55) bounded at both ends by a tooth (56, 57) which projects radially outwards and is designed to drive a stub (58) of the rest (51, 52).
12. Lock according to Claim 10, characterized in that each follower (6, 7) has a flange which has a radially directed cut-out (85) in which there slides a stub (86) which is designed to slide in an opening (87) in the corresponding rest (51, 52) which extends in the longitudinal direction (53) of the rod (47), the length of this opening (87) corresponding to the dead travel needed to allow the follower (6, 7) to return to its rest position after a manoeuvre of operating the rod (47) without causing the rod to move.
13. Lock according to one of Claims 1 to 12, comprising, for each follower (6, 7), means (64, 65) designed to collaborate with a return spring (63) to return the follower (6, 7) to its rest position, characterized in that it comprises, for at least one follower (6, 7),

    a member (64, 65) mounted so that it can move inside the case (11) of the lock (1) and designed to move in a longitudinal direction (68) when the follower (6, 7) turns about its axis (8), in a first direction against the action of the said return spring (63), or in the opposite direction, under the action of the said spring (63),

    means (66) secured to the follower (6, 7) and designed to collaborate with complementary means (67) secured to the moving member (64, 65) to convert a rotational movement of the follower (6, 7) about its axis (8) into a longitudinal movement of the moving member (64, 65) and vice versa.
14. Lock according to Claim 13, characterized in that the means (66) secured to the follower (6, 7) are means forming a pinion (66) which are centred on the axis (8) of the said follower (6, 7), and in that the complementary means (67) secured to the moving member (64, 65) are a rack (67) engaging with the means forming a pinion (66).
15. Lock according to Claim 13 or 14, characterized in that the spring (63) is a coil spring (63) extending in the said longitudinal direction (68) inside a housing (69) formed in the said case (11), and in that the moving member (64, 65) comprises at least one projecting element (70) designed to engage with a corresponding end of the spring (63).
16. Lock according to Claim 15, the follower (6, 7) being designed to be turned in both directions from its rest position, characterized in that the moving member (64, 65) comprises two projecting elements (70) designed to engage respectively with a corresponding end of the spring (63) associated with it.
17. Lock according to any one of Claims 1 to 16, characterized in that it comprises means for manually blocking the latch bolt (5) with respect to the interior surface (101) of the edge-plate (llb) in a position retracted inside the case (11) of the lock (1) .
18. Lock according to Claim 17, characterized in that the bolt (5) has, on its chamfer (104), a cavity (105) extending over a central part of the height of the said chamfer (104), and in that this cavity (105) houses a slide (106) extending over just part of the height of the said cavity (105) and able to move inside the said cavity (105) in the heightwise direction thereof.
19. Lock according to Claim 18, characterized in that the slide (106) has a cross section such that it completely fills the cavity (105), its chamfer (110) reconstructing the chamfer (104) of the latch bolt (5).
20. Lock according to Claim 18 or 19, characterized in that the cavity (105) communicates with a second cavity (107) extending in the heightwise direction of the chamfer (104) and formed in the mass of the bolt (5), as far as the exterior surface (109) thereof, and in that the slide (106) bears a finger (108) designed to slide in the 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) lies flush with the corresponding surface (109) of the bolt (5) when the slide (106) is in its position distant from the second cavity (107), and projects from the said surface (109) of the bolt (5) when the slide (106) is in its position near to the second cavity (107), so as to butt against the interior surface (102) of the edge-plate (11b).

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