EP1059409B9 - Drive gear for a lock follower - Google Patents

Abstract

The spring lock comprises a casing (22) in which a primary spring pinion is installed which engages through an operating square (26) a locking spring (14) housed in the rabbet (20) of the door frame (3). A secondary spring pinion receives the operating square (15) of a handle (13). The two spring pinions are arranged in the same plane in the casing.

Description

The present invention relates to the field of building hardware.

The invention more particularly relates to a follower return device according to the preamble of claim 1.

• La figure 1 est une représentation schématisée et en coupe des montants avant de deux vantaux A, B d'une fenêtre dont l'un A est à recouvrement du second B ;
• La figure 2 représente ces mêmes montants décalés l'un par rapport à l'autre, la poignée de commande étant ici démontée.

There are, already, devices of return of this type. In this connection, to better understand this state of the art, reference is made to FIGS. 1 and 2 of the accompanying drawings, which show that:

• Figure 1 is a schematic representation in section of the front posts of two leaves A, B of a window, one A is overlapping the second B;
• Figure 2 shows the same amounts offset with respect to each other, the control handle being here disassembled.

In fact, this state of the art represented in these FIGS. 1 and 2 and which is described in more detail below, corresponds more particularly in DE-U-91 03 676.

Thus, as can be seen in these FIGS. 1 and 2, the opening frame, corresponding to leaf A, comprises a covering strip C which is applied to a support flange D of the other leaf B. Moreover, this opening frame cover leaf A receives, in rabbet of its front post, a locking fitting E housed in a recess groove F provided for this purpose.

It can be seen, again, that on the internal side, the cover strip C of this front post of the leaf A receives an inner flap G, in the form of a finishing profile giving a certain symmetry to the assembly, besides this flap G closes the rabbet H (fig.1) existing between the edges of the wings A and B. This rebate comprises, outside the zone occupied by the idler returning device, a seal (not shown) housed in a groove R of the cover strip (as shown in Figure 2).

As can be seen very clearly in this FIG. 1, the axis I of the follower corresponding to the control mechanism of the locking fitting E is substantially offset, horizontally, with respect to the median plane J of the beat G on which is reported, of centrally, the control handle K and, therefore, the maneuvering square M of the latter.

Under these conditions, use is made of a nut follower N which comes to take position between the handle K and the housing of the locking fitting E. Ultimately, as can be seen in these FIGS. idler device N, in the form of a housing, takes position in a notch O made from the rabbet in the cover strip C. As a result, such a notch O defines at this lap strip C an interruption in sealing, breaking the groove R of the cover strip C, which it ensures in cooperation with the support flange D of the other leaf B.

After implantation into rabbet of leaf A, lock fitting E and the return device of follower N, it is reported, at this notch O, a finishing cover P to recreate this continuity at said cover strip C Such a finishing cover P is, however, unable to remedy the problem of the seal which has just been mentioned.

Of course, such a cover P must necessarily be adapted to the distance Q separating the inner side of the cover strip C from the casing of the locking fitting E. This is essentially due to the fact that the return device and follower N comes here , directly applied on this housing of the locking fitting E. Note, in this connection, that their connection is provided by means of fixing screws, taking into account that, necessarily, the assembly, lock fitting E and idler device N, must be recessed, in one piece, in rebate of the opening frame corresponding to the cover leaf A.

As for the idler device N whose details do not appear in these Figures 1 and 2 corresponding to the state of the art, it is in the form of a housing in which are rotatably mounted about axes parallel, on the one hand, a primary sprocket wheel traversed at its center, an opening for receiving a maneuvering square cooperating, moreover, with the follower of the control mechanism of the locking fitting E On the other hand, in this housing is mounted a secondary pinion-follower itself traversed by an opening for the reception of the operating square of the control handle K. These primary and secondary follower gears are engaged one with the other through reversing gears, in particular two in number, allowing, during the rotation under the impulse of the handle control K of the secondary sprocket-idler in a given direction, that results in a rotation in the same direction of the primary sprocket-nut.

According to the drawings and the description of this document DE-U-91 03 676, these primary and secondary nut sprockets are arranged in a same plane in said housing.

However, because of the often standardized section of the maneuvering squares, whether that of the handle or the mechanism of the lock fitting, the inter-axis between these gears is too important, and therefore the offset that they provide is too large and / or the size of the casing of this follower return device becomes excessive width, preventing its housing in the rabbet notching of the front amount of the opening.

The solution of arranging these gears in separate planes poses other problems. In particular, it results in a relatively large thickness of this housing which can take a position in a notch O Therefore at the level of the joinery. Thus, as can be seen in FIG. 1, this notch O necessarily extends in the cover strip C and the thickness of the amount of the cover leaf A.

• de faciliter le logement de ce dispositif dans l'épaisseur de la menuiserie ;
• de rendre plus aisé l'entaillage qu'il convient de réaliser dans cette menuiserie pour permettre ce logement ;
• d'éviter l'emploi d'un cache P comme cela était utile par le passé ;
• rendre plus aisé la fixation dudit dispositif sur le boîtier de la ferrure de verrouillage ;
• permettre la pose, individuellement, de la ferrure par rapport à ce dispositif de renvoi de fouillot ;
• autoriser un montage en applique de ce dernier au travers d'un entaillage ménagé du côté interne au bandeau de recouvrement.

The present invention is intended to provide a solution to this general problem of the bulk of a follower return device, this for the purpose of:

• to facilitate the housing of this device in the thickness of the joinery;
• to make easier the notching that should be done in this woodwork to allow this housing;
• to avoid the use of a cache P as was useful in the past;
• make it easier to fix said device on the casing of the locking fitting;
• allow the fitting, individually, the fitting with respect to this follower return device;
• allow a surface mounting of the latter through a notch provided on the inner side of the cover strip.

In general, the present invention is intended to provide a solution to make it easily adaptable such a idler return device to any type of profile constituting the opening frame of a door, window or the like, in particular what whatever the thickness of the profile, therefore the distance separating the internal side of the latter from the internal side of the housing of the control mechanism of the locking fitting.

For this purpose, the invention relates to a follower return device as defined in claim 1.

The advantages resulting from the present invention consist, first of all, in that the arrangement in the same plane of the pinions makes it possible to give the casing of this follower return a smaller thickness, compatible with the thickness of a strip of opening frame covering. Furthermore, insofar as these gears no longer necessarily have in their center an opening of section adjusted directly to the section of the square, whether it is that of the control mechanism or that of the handle, these gears can be much smaller section without this poses any problem of material thickness with respect to their peripheral teeth and, therefore, mechanical strength of these gears. Also, this housing may also have a smaller width, so that it can be mounted in a scalloping extending exclusively in the cover strip.

According to an advantageous embodiment of the invention, the secondary pinion-follower and / or the primary pinion-follower are subdivided, in their axial direction, in two cylindrical portions of which a first carries a toothing adapted to be meshing on the pinion inverter, the second portion having in its center, a primary and / or secondary opening for receiving the primary and / or secondary operating square of the handle and / or the control mechanism and substantially constituting said primary and / or secondary coupling means.

According to a feature of this invention, the portion of the secondary pinion-follower and / or primary pinion-nut, provided with the opening for receiving the operating square of the handle and / or the control mechanism, is emerging at least partially of the housing, the side opposite the handle and / or said control mechanism.

In fact, as on the inner side of the cover strip is reported a beat, referenced G in Figure 2, it was imagined, as part of an inventive step, to take advantage of the extra thickness provided by this beat to come there. housing said secondary coupling means corresponding to this secondary sprocket-idler In fact, in this beat is anyway provided a passage hole of the handle of the handle. Insofar as it is customary to give this hole a much larger section than that of such a square maneuver, these coupling means, extending at least partially outside the housing, can take position without it is necessary to provide any additional machining operation.

According to another characteristic of the invention, the primary pinion-follower and / or the secondary pinion-follower is prolonged, axially, by a primary and / or secondary maneuvering square made of material with this pinion and protruding on the side of the pinion. housing opposite the lock fitting housing and / or the handle.

In addition, according to an additional feature of the invention, on the primary maneuvering square made of material with the primary pinion-follower is engaged a spacer forming fur, of interchangeable type, to adapt to the distance separating the housing of said housing device of the lock fitting.

According to yet another embodiment of the invention, said primary and / or secondary coupling means are defined by an intermediate piece comprising, on the one hand, at one end of the male or female interlocking means designed to cooperate with interlocking means of female or male conjugated form that comprises the primary pinion-follower and / or the secondary pinion-fouillot and, on the other hand, an extension, either in the form of a primary and / or secondary maneuvering square coming from protruding on the side of the housing facing the lock fitting and / or the handle, or having in its center an opening for receiving the primary and / or secondary maneuvering square of the handle and / or this mechanism of ordered.

According to another characteristic, the housing of the idler gear is adapted to receive clipping fastening means to ensure its connection to the housing of the locking fitting, such clipping fastening means being, again, of interchangeable nature. to be adjusted to the distance between said housings.

• La figure 3 est une représentation schématisée et en coupe du montant avant, recevant une ferrure de verrouillage, du châssis ouvrant correspondant à une porte, fenêtre ou analogue, du type à deux vantaux, entre ladite ferrure de verrouillage et une poignée de commande étant interposé un dispositif de renvoi de fouillot, conforme à l'invention ;
• La figure 4 est une représentation schématisée et en coupe transversale du boîtier du dispositif de renvoi de fouillot, conforme à l'invention;
• La figure 5 est une représentation similaire à la figure 4 correspondant au second mode de réalisation ;
• La figure 6 est une représentation schématisée et en plan du dispositif, étant visible le côté destiné à être orienté en direction du boîtier de la ferrure de verrouillage ;
• La figure 7 est une représentation schématisée illustrant la solution où les moyens d'accouplement primaires et/ou secondaires se présentent sous forme d'une pièce indépendante ;
• La figure 8 est une représentation schématisée du dispositif tel qu'illustré dans la figure 5, une coupe partielle étant réalisée à hauteur du fourreau, formant entretoise, qui est engagé sur le carré de manoeuvre du pignon-fouillot primaire ;
• La figure 9 est une vue du détail α de la figure 8 ;
• La figure 10 est une vue schématisée et en coupe partielle, représentant la liaison entre le boîtier du dispositif de renvoi de fouillot avec le boîtier de la ferrure de verrouillage, par l'intermédiaire de moyens de fixation par clipage ;
• La figure 11 représente les mêmes pièces de manière éclatée ;
• La figure 12 est une vue du détail β de la figure 10.

The present invention will be better understood on reading the following description relating to embodiments shown in the accompanying drawings.

• FIG. 3 is a schematic representation in section of the front pillar, receiving a locking fitting, of the opening frame corresponding to a door, window or the like, of the two-leaf type, between said locking fitting and a control handle being interposed; a follower return device according to the invention;
• Figure 4 is a schematic representation in cross section of the housing of the follower return device according to the invention;
• Figure 5 is a representation similar to Figure 4 corresponding to the second embodiment;
• Figure 6 is a schematic and plan view of the device, being visible the side intended to be oriented towards the housing of the locking fitting;
• Figure 7 is a schematic representation illustrating the solution where the primary and / or secondary coupling means are in the form of an independent piece;
• Figure 8 is a schematic representation of the device as shown in Figure 5, a partial section being formed at the height of the sheath, forming a spacer, which is engaged on the operating square of the primary gear-follower;
• Figure 9 is a detail view α of Figure 8;
• Figure 10 is a schematic and partial sectional view, showing the connection between the housing of the idler gear device with the housing of the lock fitting, by means of clipping fastening means;
• Figure 11 shows the same parts exploded;
• Figure 12 is a detail view β of Figure 10.

As can be seen from the various FIGS. 3 to 12 of the accompanying drawings, the present invention relates to a follower return device 1 which will find a very particular use in the context of a situation as visible in FIGS. 2 which correspond to the state of the art.

Thus, in the case of a door or window with two leaves one said service leaf, comes in recovery of the other, said leaf semi-fixed. More particularly, it is shown in Figure 3, applying to the present invention, the amount before 2, partially in section, of an opening frame 3 corresponding to the operating leaf identified by the reference A in Figures 1 and 2. Thus, this opening frame 3 comprises a cover strip 4 intended to be applied on a support flange 5 of the front pillar 6 corresponding to the opening frame 7, here shown partially diagrammatically and in broken lines.

Very often, the amount before 6, corresponding to the other opening frame 7 receives an outer beating (not shown) closing from the outside, the rebate set between the uprights before 2 and 6. Moreover, on the internal side 9 to the lap strip 4 is also applied an internal flap 10. This is in the form of a profile often centered with respect to the median plane 11 of the door or double-leaf window.

Not only is such an internal beating 10 thus closing the rebate play 12 between the cover strip 4 corresponding to the opening frame 3 and the front post 6 of the other opening frame 7, but, moreover, it allows to obtain, on the inner side of the house, a certain symmetry from a visual point of view of the joinery.

To maintain this symmetry, but also for issues of size of the control handle 13 provided able to act on a locking fitting 14, said control handle 13 takes position in the middle of the internal beat 10. Also, the axis the operating square 15 of the control handle 13 is not located in line with the axis 16 of the follower corresponding to the control mechanism 17 of said locking fitting 14. In this respect, the latter, therefore the housing 18 enclosing this control mechanism 17, takes position in a recess groove 19 provided in rabbet 20 of the front post 2 corresponding to the opening frame 3.

As can be seen from the various FIGS. 3 to 12, the follower return device 1, according to the invention, comprises a housing 22 in which are mounted in rotation about axes 23, 24 parallel, on the one hand, a pinion follower-primary 25 intended to cooperate, through a primary operating square 26, with the follower of the control mechanism 17 of the locking fitting 14, here represented in the form of a cremone, and, secondly, a secondary pinion-follower 27 provided to accommodate the secondary maneuvering chamber 15 of the control handle 13. This primary pinion gear 25 and the secondary pinion-follower 27 are meshing through at least one pinion inverter 28, 29 also rotatably mounted in the housing 22. The latter is adapted to assume a position in the thickness of the opening frame 3, between the housing 18 corresponding to the locking fitting 14 and said control handle 13.

As is more particularly visible in FIGS. 4 and 5, the primary pinion-follower 25 and the secondary pinion-follower 27 are arranged in the same plane of engagement PL in the case 22. Such an arrangement makes it possible to confer on the latter a reduced thickness 34 which is compatible with the thickness 39 of the cover strip 4.

According to the invention, it is also provided, in combination, that the primary pinion-follower 25 and / or the secondary pinion-follower 27 comprise primary and / or secondary coupling means provided to cooperate with the primary maneuvering square and or secondary 26; 15, as the case may be, of the control mechanism 17 of the locking fitting 14 or of the handle 13, lying outside said plane of engagement PL.

Thus, as visible for example in FIGS. 4,5,8,10,11, the secondary pinion-follower 27 is subdivided, in its axial direction, into two cylindrical portions 30, 31, of which a first portion 30 bears a suitable toothing to meshing with the inverter pinion or gears 28, 29. The second portion 31 substantially defining the secondary coupling means comprises, in its center, the opening 32 for receiving the secondary operating block 15 of the control handle 13.

Thus, by avoiding to extend the opening 32, for the reception of this secondary maneuvering square 15, at the level of the cylindrical portion 30, provided with the toothing, the latter can be defined of smaller diameter 33, facilitating its juxtaposition in the same plane, the primary sprocket wheel 25, taking into account the spacing to be respected between the axis 23 of the latter relative to the axis 24 of the secondary sprocket-follower 27. This spacing. corresponds very exactly to the offset between the secondary operating chamber 15 of the control handle 13 and the axis 16 of the follower corresponding to the control mechanism 17 of the locking fitting 14.

Under these conditions, not only the thickness 34 of the housing 22 is reduced, but also its width 35.

According to another feature of the invention, visible in particular in Figure 5, the portion 31 of the secondary sprocket-pinion 27, provided with the opening 32 for receiving the secondary operating chamber 15 of the control handle 13, can be emerging at least partially from this housing 22, the side 36 facing said control handle 13. Ultimately, as shown in this figure 5 this further reduces this thickness 34 of the housing 22.

In addition, such a cylindrical portion 31 emerging from the housing 22 can largely take position in the thickness of the inner flap 10 as shown in Figure 3. It should be noted in this regard that in this beating it is machined a hole passage of the square maneuver corresponding to the handle, which orifice is precisely sufficient to accommodate this projecting portion 31 of said secondary pinion-follower 27.

Obviously, the primary sprocket wheel 25 could be subdivided, in the same way, into two portions and borrow, thus, a Similarly, again the portion provided with an opening for the reception of the primary maneuvering square corresponding to the control mechanism 17 is likely to emerge from the housing 22, on the side of the latter.

According to another embodiment of the present invention which may be envisaged in combination with that already mentioned above, as is apparent from the accompanying drawings, more particularly FIGS. 4, 5, 10, 10 and 12, the primary idler sprocket 25 is extended, axially, by a primary driving square 26 defining said primary coupling means. Thus, this primary maneuvering square 26, made of material with this pinion 25, is protruding on the side 37 of the housing 22 facing the housing 18 of the locking fitting 14, in order to cooperate with the control mechanism 17 of FIG. the latter.

By avoiding, as for the secondary sprocket 27, to provide in the primary sprocket 25 an opening for receiving the primary driving square 26, the section 38 of this primary sprocket-wheel 25 may also be decreased.

Again, similar coupling means, in the form of a secondary maneuvering square could equip the secondary sprocket-follower 27. Under these conditions, this secondary maneuvering square would emerge on the side 36 of the housing 22 to stand out relative to the beating 10 and allow the engagement of the handle 13.

According to another embodiment of the invention, illustrated schematically in FIG. 7, said primary and / or secondary coupling means may be defined by an intermediate piece 50 having, on the one hand, at one end 51 male or female interlocking means 52 provided for cooperating with female or male conjugate shape engaging means 53 that comprises the primary pinion gear 25 and / or the secondary pinion-follower 27 and, on the other hand, an extension 54, 54A, either in the form of an operating square protruding from the side 37, 36 of the housing 22 facing the control mechanism 17 of the locking fitting 14 or the handle 13, or having in its center an opening for receiving the square maneuver 15; 26 of the handle 13 or this control mechanism 17.

If, in this FIG. 7, a secondary sprocket 27 and a primary sprocket 25 receiving each of the coupling means in the form of such an intermediate piece are visible, only one of them can be visible. equipped, the other being capable of receiving coupling means corresponding to one of the embodiments described above.

Insofar as these primary and secondary pinion gears 27 comprise a section, respectively 38 and 33, independent of that of the secondary primary working square 26 respectively 15, this section 38, 33 can be adapted almost to any type of spacing. that is currently encountered between the axis 16 of a nut of a lock fitting 17 and the plane 11 in which is located the control handle 13.

Finally, and as can be seen in FIG. 3, through the foregoing characteristics, the casing 22, of reduced width and thickness 34, is able, under these conditions, to assume a position in the thickness 39 of the strip itself. 4, which can be cut not, not from the front edge 21 of the amount 2 of the opening frame 3, but from its inner side 9.

Such notching 40 of this inner side 9 of the cover strip 4 is made invisible through the internal flap 10. In addition, such an arrangement allows the locking fitting 14 to be mounted independently in the embedding groove 9. The device 1 is able to be brought into cooperation, through the secondary maneuvering 26 associated with the pinion-follower secondary 25, afterwards with the control mechanism 17 of said locking fitting 14.

It will be noted that, in comparison with the state of the prior art, the solution according to the invention avoids notching the front edge of the cover strip 4, which design required the use of a visible cover P FIG. to close this notching after assembly, taking place simultaneously of the lock fitting and the idler return device.

It should be further observed that the distance 41 between the inner side of the cover strip 4 and the inner side of the housing 18 of the locking fitting 14 is likely to vary depending on the type of profile used for the design of a housing. opening frame 3.

Also, according to the invention, on the primary working square 26 of the primary sprocket wheel 25 can be engaged a sheath 42 forming a spacer between the housing 22 of this device and the housing 18 enclosing the control mechanism 17 of the fitting of locking 14. Such a sleeve 42, having an opening 43 for the passage of said operating square 26, may be designed as a plastic part, thickness 44 adapted to this distance between the housings 18 and 22.

Finally and as can be seen in FIGS. 7 and 8, this sleeve 42 can receive, at the level of this opening 43, scored indexing means 45 for temporary immobilization of the primary maneuvering square 26, prior to the mounting the idler device 1 on the opening frame 3, and therefore before engagement of said primary driving square 26 in the follower of the control mechanism 17 of the locking fitting 14.

Obviously, such breakable indexing means 45 may adopt different embodiments. In particular, they can present in the form of a tongue 46 inserted into a notch 47 provided on the periphery of the primary actuating square 26, or even at the level of the primary sprocket-follower 27.

Obviously, such a sleeve 42 could equally well be engaged on the extension 54 of an intermediate piece 50 associated with the primary pinion-follower 25, or even on a possible emerging portion of the housing 22, on the side 37 of the fitting 14, and comprising an opening for the reception of a maneuvering square, as explained above with respect to an embodiment of the invention.

Insofar as the locking fitting 14 is individually attached to the joinery, as is the nut return device 1, moreover perfectly maintained through the notching 40 on the inner side 9 of the covering strip 4, the housing 22 of this device 1 can simply be clipped and no longer screwed onto the housing 18 of the locking fitting 14.

Also, referring to Figures 10 to 12, there are such clipping fastening means 48 defined by two ends 49, 50, provided with retaining means 51 in the form of lugs or similar forming redan, extending on either side of a spacer member 52 of thickness 55 fitted to the gap between the housing 22 of the idler gear 1 and the housing 18 of the lock fitting 14.

Thus and at the time of assembly, the housing 22 of the idler return device 1 is equipped with these snap fastening means 48, by engaging, in the openings 53 provided for this purpose, their end piece 49, knowing that the The assembly is then clipped onto the housing 18 by matching the end piece 50 of these clipping fastening means 48 with an opening 54 in said housing 18.

In view of the foregoing explanations, it will be understood, of course, that insofar as the spacer element 52 of these clipping fixing means 48 is dependent on a variable distance, the carpenter will be offered the model of which the The thickness 55 of this spacer element 52 is adaptable to the profile of its joinery.

Thus, the invention responds advantageously to the problem posed and represents, therefore, a clear progress in this field of idler return devices.

Claims (11)

1. Drive gear for a lock follower comprising a casing (22) in which are rotationally mounted around parallel axes (23, 24), on the one hand, a primary pinion-tumbler (25) comprising primary coupling means designed so as to co-operate, through a primary actuating square (26), with a tumbler of a control mechanism (17) accommodated in a casing (18) of a locking fitting (14), such as an espagnolette, arranged in an encasing groove (19) provided for in the fillister (20) of a door- or window-frame (3) provided with a capping strip (4) and, on the other hand, a secondary pinion-tumbler (27) comprising secondary coupling means designed so as to accommodate a secondary actuating square (15) of a control handle (13) inserted against the inner side of the door- or window-frame (3), this primary pinion-tumbler (25) and the secondary pinion-tumbler (27) engaging, through at least one reversing pinion (28, 29), also rotationally mounted in said casing (22), designed capable of being positioned in the thickness of the door- or window-frame (3), between the casing (18) of the fitting (14) and the control handle (13), the primary pinion-tumbler (25) and the secondary pinion-tumbler (27) being arranged on the same engaging plane (PL) inside the casing (22) of this device, characterised in that said primary and/or secondary coupling means are located outside said engaging plan (PL).
2. Drive gear for a lock follower according to claim 1, characterised in that the secondary pinion-tumbler (27) and/or the primary pinion-tumbler (25) are subdivided, in their axial direction, into two cylindrical portions (30, 31) a first one of which (30) bears a toothing capable of engaging with the reversing pinion (28, 29), the second portion (31) including, at its centre, a primary and/or secondary opening (32) for receiving the primary and/or secondary actuating square (15) of the handle (13) and/or of said control mechanism (17) and substantially forming said primary and/or secondary coupling means.
3. Drive gear for a lock follower according to claim 2, characterised in that the portion (31) of the secondary pinion-tumbler (27) and/or of the primary pinion-tumbler (25) provided with the opening (32) for receiving the actuating square (15 ; 26) of the handle (13) and/or of said control mechanism (17) protrudes at least partially out of the casing (22), on the side (36 ; 37) in front of said handle (13) and/or of said control mechanism (17).
4. Drive gear for a lock follower according to any of the preceding claims, characterised in that the primary pinion-tumbler (25) and/or the secondary pinion-tumbler (27) is axially extended by a primary and/or secondary actuating square (26) made out of the same material as this pinion (25 ; 27), protruding on the side (37 ; 36) of the casing (22) in front of the locking fitting (14) and/or the handle (13) and substantially forming said primary and/or secondary coupling means.
5. Drive gear for a lock follower according to any of the preceding claims, characterised in that said primary and/or secondary coupling means are defined by an intermediate part (50) including, on the one hand, at one end (51), male or female encasing means (52) designed capable of co-operating with female or male encasing means of a conjugate shape (53) the primary pinion-tumbler (25) and/or the secondary pinion-tumbler (27) include and, on the other hand, an extension (54 ; 54A), either in the form of a primary and/or secondary actuating square protruding out of the side (37 ; 36) of the casing (22) in front of the locking fitting (14) and/or of the handle (13), or including, at its centre, an opening for receiving the primary and/or secondary actuating square (15 ; 26) of this handle (13) and/or of this control mechanism (17).
6. Drive gear for a lock follower according to one of the claims 1 to 5, characterised in that its casing (22) is defined of such a thickness (34) and width (35) as to be capable of being positioned in the thickness (39) of a capping strip (4) of an overlapping door- or window-frame (3) of a door, window or the like, in a cut-out (40) provided for on the side (9) towards the interior of the dwelling of this capping strip (4).
7. Drive gear for a lock follower according to any of the preceding claims, characterised in that the secondary actuating square (15) or the portion protruding out of the side (36) of the casing (22) or on the extension (54A) of the intermediate part (50) associated with the secondary pinion-tumbler (27) extends into an opening provided for in a rabbet (10) inserted against the inner side (9) of the capping strip (4).
8. Drive gear for a lock follower according to any of the preceding claims, characterised in that onto the primary actuating square (26) or the portion protruding out of the side (37) of the casing (22) or on the extension (54) of the intermediate part (50) associated with the primary pinion-tumbler (25) is inserted a sleeve (42) forming a spacer between the casing (22) of the device (1) and the casing (18) containing the control mechanism (17) of the locking fitting (14).
9. Drive gear for a lock follower according to claim 8, characterised in that the sleeve (42) forming a spacer includes, at the level of the opening (43) for the passing through of the primary actuating square (26) or the protruding portion associated with the primary pinion-tumbler (25) or on the extension (54) of the intermediate part (50), shearable indexing means (45) for temporarily immobilising in rotation said primary pinion-tumbler (25).
10. Drive gear for a lock follower according to any of the preceding claims, characterised in that its casing (22) is designed capable of receiving snap-on fixing means (48) in order to ensure its connection to the casing (18) of the locking fitting (14), such snap-on fixing means (48) being of an interchangeable nature, so as to be adjusted to the distance separating said casing (18) and (22).
11. Drive gear for a lock follower according to claim 10, characterised in that the snap-on fixing means (48) are defined by two ferrules (49, 50), provided with retaining means (51), in the form of catches or the like and extending on both sides of an element forming a spacer (52) with a thickness (55) adjusted to the separation existing between the casing (22) of the drive gear for a lock follower (1) and the casing (18) of the locking fitting (14), the ferrule (49) being capable of being snapped into an opening (53) provided for this purpose in said casing (22), while the ferrule (50) is capable of coinciding with an opening (54) in the casing (18).

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