EP0341173B1 - Cremone for a door, window or the like - Google Patents

Description

The invention relates to a locking lever for a door, window or the like comprising a control mechanism housed in a housing of the type according to the preamble of claim 1.

There are already known a number of locks and bolts applicable to doors, windows or the like, usually providing multipoint locking of an opening relative to its frame.

For example, already known from document DE-C-2,605,763 a lock-bolt, the peculiarity of which lies in the design of its control mechanism by means of two separate spindles accessible, respectively, from the interior and the exterior of a door, window or the like.

The inner follower is composed of two parts driven in rotation by said operating handle, one having an idle stroke relative to the other and both ensuring distinct functions. Thus, one of these parts, called the crown, comprises, on its periphery, a transmission element cooperating with an easel, connected to the operating rods and this, in order to give them a vertical displacement. As for the second part, it is rotated by means of the first beyond an angular displacement imparted to the operating handle corresponding to the above-mentioned idle stroke. In fact, this second part is provided with a control finger acting on the tail of the latch bolt and causing the latter to retreat.

The second follower, which can be manipulated from outside the opening, is of the one-piece type and cooperates, such as the first follower, with the bridge to bring the operating rods either in the locked position or in the unlocked position. However, this second follower is limited to this function and it is completely impossible for it to intervene on any one of the locking members apart from these operating rods.

The control mechanism of this known locking lever comprises, in addition, a key element ensuring the transverse displacement of the housing, of a locking bolt capable of cooperating with an operating rod to immobilize the latter in the locked position. Such a bolt locking prevents, therefore, the control of the operating rods from the outside as from the inside by action on one or the other of the corresponding pins.

In order to increase the degree of security of these locking bolts, it is frequent, as described in the prior document, to associate with this locking bolt, a safety device preventing the control of said locking bolt by direct action on this last. Such an action corresponds, for example, to the actions of a shark trying to break into the home.

Another characteristic of these locks known and described in the aforementioned prior document lies in the possibility of operating the latch bolt by means of the key element. Given that the follower, accessible from outside the house only allows the operating rods to be actuated, it seems, in fact, essential to ensure the withdrawal of the latch bolt by means of the element to key so that you can enter the home. For this purpose, the control mechanism comprises a bracket capable of cooperating, at its lower end, with the bit of the key element so as to control the rotation of a control lever causing the retraction of said latch bolt. Note, moreover, that the aforementioned bracket is connected, at its lower end to the locking bolt so that the control of the latter, in the locked position causes the erasure of said bracket allowing the passage of the bit of the key item. In contrast, after the said locking bolt has retreated, following a first rotation of the bit, the latter is again able to cooperate with this lower end of the bracket during the next rotation.

The major drawback presented by these transmission parts connecting the key element to the latch bolt, lies in the additional space that they constitute inside the case of the lock-bolt. This has repercussions, of course, on the size of the housing and, ultimately, that of the notching which it is necessary to machine in the edge before opening the door, window or the like.

Locking bolts in accordance with the aforementioned document also have the drawback of not having any central locking point formed, for example, by a deadbolt. The locking bolt is not, in any case, capable of fulfilling this function because it is unable to emerge sufficiently in relation to the headrest applied to the edge before the opening.

Indeed, if it is allocated to the locking bolt a sliding length inside the housing, such that it is able, at first, to cooperate with an operating rod to lock the latter in position locking and, in a second step, to enter a keeper and form a sufficient anchor point, this locking bolt would correspond to an important bulk Imposing an increase in the size of said housing. However, this solution goes in the opposite direction to the objections targeted by the present invention. It specifically intends to make substantial improvements at this level.

• d'au moins un fouillot actionné depuis l'intérieur et/ou l'extérieur de l'ouvrant pour agir, simultanément, sur au moins une tringle de manoeuvre ou un chevalet, relié à cette dernière, et un pêne demi-tour ;
• et de moyens pour commander le recul dudit pêne demi-tour par l'intermédiaire d'un élément à clé intervenant sur un organe de blocage susceptible d'immobiliser la ou les tringles de manoeuvre ou le chevalet en position verrouillée.

The present invention aims to remedy these drawbacks. The invention as characterized in claim 1 makes it possible to achieve this objective by providing a locking lever for a door, window or the like, comprising a control mechanism housed in a housing and comprising:

• at least one follower actuated from inside and / or outside the opening to act, simultaneously, on at least one operating rod or an easel, connected to the latter, and a latch bolt;
• and means for controlling the retraction of said latch bolt by means of a key element acting on a blocking member capable of immobilizing the operating rod or rods or the bridge in the locked position.

• a) un pêne dormant actionné par l'élément à clé et pourvu dudit organe de blocage ;
• b) des moyens pour ajuster le déplacement de l'organe de blocage par rapport à la distance le séparant de la tringle de manoeuvre ou du chevalet, indépendamment de la longueur de coulissement du pêne dormant ;
• c) un dispositif anti-fausse manoeuvre pour annihiler toute action de l'élément à clé sur le pêne dormant lorsque la ou les tringles de manoeuvre sont en position déverrouillée ;
  lesdits moyens pour commander le recul du pêne demi-tour par l'intermédiaire de l'élément à clé actionnant le fouillot et coopérant avec l'organe de blocage Immobilisant les tringles de manoeuvre ou le chevalet en position de verrouillage.

This lock lever also includes, in combination:

• a) a deadbolt actuated by the key element and provided with said locking member;
• b) means for adjusting the displacement of the locking member with respect to the distance separating it from the operating rod or the easel, independently of the sliding length of the deadbolt;
• c) an anti-false operation device for annihilating any action of the key element on the dead bolt when the operating rod or rods are in the unlocked position;
  said means for controlling the retraction of the latch bolt by means of the key element actuating the follower and cooperating with the blocking member Immobilizing the operating rods or the bridge in the locked position.

The advantages obtained thanks to this invention consist in that the blocking member, actuated by the dead bolt and intended to immobilize the operating rods in the locked position, has a displacement independent of the stroke effected by said dead bolt. Therefore, the organ of blocking can be approached, as close as possible, to the operating rod or the easel in the event of a reduction in the width of the housing without, however, hindering the sliding of the deadbolt. It will be noted, however, that it remains integral with the latter so that their order is carried out simultaneously. In addition, the control of the deadbolt, in the present case, being independent of the arrangement of the operating rod or of the easel, an anti-false operation device makes it possible to avoid possible manipulation of the deadbolt, by means of the key element, when the operating rods are in the unlocked position. Such manipulation would, in fact, result in blocking or even deterioration of the lock-bolt.

Another advantage deriving from this invention lies in the fact that the means, acting on the follower to intervene on the latch bolt by means of the key element, avoid the addition of an additional control part of said latch turn around.

Furthermore, the cooperation of the drive means of the follower with the blocking member and not the deadbolt, makes it possible not to pass on the significant displacement of the latter on said means when the key element is controlled.

• la figure 1 représente une vue schématisée et en élévation de la crémone-serrure conforme à l'invention, le couvercle du boîtier ayant été retiré, et les moyens pour actionner le fouillot par l'intermédiaire de l'élément à clé n'ont pas été illustrés
• la figure 2 représente une vue identique à la figure 1 mais correspondant à un second mode de réalisation et dans laquelle lesdits moyens pour actionner le fouillot par l'intermédiaire de l'élément à clé ont été représentés
• la figure 3 représente schématiquement et en élévation le pêne dormant muni de l'organe de blocage ainsi que le dispositif anti-fausse manoeuvre.

The invention is described below in more detail using drawings representing only one embodiment.

• FIG. 1 represents a diagrammatic view in elevation of the bolt lock according to the invention, the cover of the casing having been removed, and the means for actuating the follower by means of the key element have not been illustrated
• 2 shows a view identical to Figure 1 but corresponding to a second embodiment and in which said means for actuating the follower through the key element have been shown
• Figure 3 shows schematically and in elevation the deadbolt provided with the locking member and the anti-false operation device.

The cremone bolt 1, according to the invention and of which two distinct embodiments have been shown in FIGS. 1 and 2, is, more particularly, intended to be installed in the edge of the opening of a door, window or the like. It is under these conditions that we meet, more generally, the size constraints of the housing of said lever-lock due to a limited notching of the amount of the opening. However, the present invention will also apply in the context of locks and bolts known as applied, the size of which should be reduced.

Thus, the bolt lock 1 is formed by a housing 2 composed of a cover and a bottom 3 (only the latter being shown in Figures 1 and 2). This housing 2 is intended to be housed in a notch formed in the edge of the opening, it is also fixed on a headrest 6 (not shown) applied to said edge before the opening.

A control mechanism 4 disposed in the housing 2 makes it possible to actuate at least one operating rod 5 extending above and / or below the latter and sliding behind the headrest 6 above. This or these operating rods 5 are frequently provided with locking elements such as rollers emerging from the headrest and cooperating with strikes arranged, in accordance with the frame of the door, window or the like.

In addition, this control mechanism 4 makes it possible to act on a latch bolt 7 and a deadbolt 8, via, respectively, an operating handle and a key element (not visible).

More precisely and as shown in FIG. 1, this control mechanism 4 comprises at least one nut 9 composed of three distinct parts capable of causing the movement of the operating rods 5 or of the latch bolt 7 under the action of the operating handle. Thus, the core 10 of this follower 9 has, in its center, an orifice 11 of parallelepipedal section and serving to receive the square of the operating handle. This core 10 is provided, on its periphery, with two control fingers 12, 13 one of which 12 cooperates with elastic means 14 systematically bringing the operating handle and, in particular, certain nut elements 9 back to their initial position rest. The second control finger 13 of this core 10 is introduced, meanwhile, into a slot 15 arranged in a ring 16 cooperating, by means of a toothing 17, with a rack 18 secured to an easel 19. The one -this is connected to the operating rod or rods 5 and ensures the transmission of the printed movement to the follower 9. This ring 16 is further provided with a drive finger (not shown) intervening in a light arranged in the third part 20 of the follower 9 which, after a first rotation, causes the retraction of the latch bolt 7. After release of the operating handle, this latch bolt 7 is returned to its projecting position by means of an elastic element 21 acting on its rear end 22 introduced into the housing 2.

Of course, it is possible to provide, according to another embodiment, a direct drive of the crown 16 of the follower 9 on one or the other of the operating rods 5.

However, the presence of an easel 19 frequently authorizes the use of standard operating rods 5, which contributes to a reduction in the cost price of the bolt lock. Not to mention that this arrangement facilitates the mounting and assembly of the constituent elements of the latter.

Furthermore, in the bolt lock 1 the operating rods can be locked, in the locked position, under the action of the control of the deadbolt 8, without the need to increase the minimum width 23 of the housing 2, this width 23 depending on the depth of the notching arranged in the edge of the opening.

Thus, the deadbolt 8 comprises a blocking member 24 capable of cooperating, in the locking position of said deadbolt 8, with the easel 19 connected to the operating rods 5.

Advantageously and according to a characteristic of the present invention, the lock-bolt 1 comprises means 25 for adjusting the displacement of this locking member 24 to the distance separating it from the easel 19 or from the operating rod 5, independently of the length of the sliding of the deadbolt 8. Thanks to these means 25, this blocking member 24 can thus be placed in the unlocked position, in the immediate vicinity of the easel 19 or the operating rod 5, without however limiting the travel, deadbolt 8 during locking. Thus, said dead bolt 8 can emerge from the headrest 6 of the lock-bolt 1 over a sufficient length so as to constitute a suitable anchoring point for the door frame, window or the like. In fact, the overall dimensions of the deadbolt assembly 8 are reduced. locking member 24, size which, until now, required increased dimensions of the housing 2.

Furthermore, it will be noted that due to this characteristic, the parts involved in blocking the operating rod 5 or the bridge 19 are independent of the follower rib 26 corresponding to the distance separating the latter from the headrest 6. Indeed , only the width of the trestle 19 is adjusted to the position of the operating rods 5 in the event of modification of this ratchet rib 26. More precisely, it is to be considered that the parts located in the zone 27 delimited by the vertical line 28 retain constant coasts whatever this fouillot coast 25.

According to a preferred embodiment, shown in FIGS. 1 and 3, the means 25 consist of a link 29 connecting the locking member 24 to the deadbolt 8 while allowing relative mobility with respect to each other, in a direction parallel to the direction of movement of said deadbolt 8. More precisely, this mobility consists of an idle stroke 30 of said deadbolt 8 relative to the locking element 24 and whose length 31 corresponds to the difference in distances 33 , 32 separating each of the latter from their unlocking position relative to their locked position.

Thus, the displacement distance 33 of the deadbolt 8 can be determined according to existing standards in the field and, conversely, the distance 32 will be reduced to a minimum while allowing proper operation of the locking member 24.

Preferably, the link 29 is constituted, substantially, by a light 34 arranged in the upper edge 35 of the deadbolt 8. In this light 34 slides the locking member 24, the latter being composed of a body 36 provided with a locking finger 37 capable of cooperating with a light or a cutout 38 arranged in the easel 19 or, optionally, in an operating rod 5.

The locking element 24 is driven by the dead bolt 8 via a control finger 39 secured to the lower edge 40 of the body 36 and introduced into the slot 34. In addition, the vertical edge front and rear 41, 42 of the latter, constitute drive stops capable of cooperating with said control finger 39.

Thus, the idle stroke 30 of the deadbolt 8 relative to the locking member 24 is determined by the distance separating this control finger 39 from the rear vertical edge 42 of the light 34. Therefore, under the action of the key element introduced into an opening 43 arranged under the dead bolt 8, the latter performs, initially, a movement corresponding to said idle stroke 30 before driving the locking element 24 and bringing the latter into cooperation with the easel 19 or, optionally, an operating rod 5.

Although having the advantage of a reduced bulk, this particular arrangement of the deadbolt 8 provided with the locking member 24, according to the invention, can be the source of a false manipulation liable to deteriorate the operation of the control mechanism 4 of the bolt-lock 1. In fact, when controlling the locking of said dead bolt 8, it is essential that the operating rods 5, and in particular, the easel 19, are already in the locked position, without what the locking finger 7 is not presented to the right of the light or cutout 38 arranged in said easel 19. Therefore, it is likely to stay in an interval not provided for this purpose, causing the control mechanism to become inoperative 4.

To remedy this drawback, the lock lever 1 is provided with an anti-false operation device 44 capable of annihilating any action of the key element on the dead bolt 8 when the operating rods 5 are in the unlocked position.

More specifically, in the context of existing lock bolts, or other types of locking fittings provided with a deadbolt, these are provided with a safety device 45 preventing any direct action on the deadbolt 8 exerted , for example, from outside the home. Thus, only the action of the bit 46, integral with the key element, on the deadbolt 8, ensures the unlocking of this safety device 45 and authorizes the movement of said deadbolt 8.

Thus, according to the embodiment shown in Figures 1 and 3, this known safety device 45 consists of a control foot 47 capable of sliding vertically relative to the deadbolt 8 and whose movement is ensured by the action of the bit 46 of the key element. Simultaneously, this control foot 47 cooperates, by means of a lug or the like, with a groove, in the form of an inverted "U", arranged for example, in one of the walls of the housing 2. Thus, during the locking or unlocking command of the deadbolt 8, the action of the bit 46 of the key element causes the lifting of the control foot 47, the lug integral with the latter then comes to cooperate with the portion horizontal of the aforementioned groove allowing the movement of the deadbolt 8. Unlike, at the end of locking or unlocking, the control foot 47 is in the low position and the lug which is attached to it is engaged in one or the other of the vertical portions of said groove machined in the housing 2. This results in total immobility of the deadbolt 8 in the event of a direct action on the latter.

The present anti-false operation device 44 consists in annihilating the operation of the safety device 45 by maintaining the latter in the locking position of the dead bolt 8 whatever the action of the user on the key element.

More precisely, this anti-false maneuvering device 44 consists of means 48 for immobilizing in the blocking position, the safety device 45 by maintaining the control foot 47 in the low position as long as the operating rods 5 are unlocked.

According to a preferred embodiment, the means 48 consist of a rod 49 extending vertically above the control foot 47 and cooperating, at its upper end 50, with the crown 16 of the follower 9. Preferably, this ring 16 has a cam function and comprises, on its periphery 51, a recess 52, capable of cooperating with the rod 49 when the operating rods 5 are in the locked position. Thus, under the action of elastic return means 53, the upper end 50, provided with a bulge 54, of this rod 49 can come to be housed in the recess 52 of the crown 16. Said rod 49 thus releases, at its lower end 55, the control foot 47 of the safety device 45. This results in the possibility of actuating said control foot 47 and, finally, the deadbolt 8, under the action of the bit 46 of the element with key.

In contrast, in the event of the unlocking of the operating rods 5 under the action of the follower 9, the rotation of the crown 16 causes the release of the upper end 50 of the rod 49 relative to the recess 52 pushing said rod 49 down, the lower end 55 of the latter immobilizing the control foot 47.

It should be noted, on the one hand, that the rod 49 is guided in its movements by means of a guide 56 arranged, for this purpose, in the housing 2. On the other hand, so as to avoid an increase the size of the latter, due to the addition of this anti-false operation device 44, a vertical groove 58 has been provided at the rear end 57 of the body 36 of the locking member 24 ensuring the passage of the rod 49.

As regards the elastic return means 53, they consist, according to a preferred embodiment of the invention, by a helical spring, engaged on the rod 49, between the bulge 54 located at the upper end 50 of this last and the guide 56 arranged in the housing 2.

The lock-bolt 1, shown in Figure 2 differs from that illustrated in Figure 1 in that its control mechanism 4 is formed, mainly, of two pins 60, 61 and a key element 62 acting on the one and / or the other of the locking members, namely the operating rods 5, the latch bolt 7 and the dead bolt 8.

More specifically, the first follower 60, disposed in the upper part of the housing 2 and called the inner follower because of its accessibility, generally from the inner face of the opening, allows actuation, by means of a handle operating rod, not shown, the operating rods 5 and the latch bolt 7. As for the second nut 61, arranged under the previous one, in the housing 2 and called external nut, it acts only on the rods of operation 5 by means of a control button accessible on the external face of the opening.

The function of the key element 62 consists, on the one hand, in controlling the deadbolt 8 and the latch bolt 7 and, on the other hand, in ensuring the locking of the operating rods 5, when these are in the locked position. Preferably, these control members which constitute the inner follower 60, the outer follower 61 and the key element 62 are arranged on the same vertical alignment inside the housing 2.

It will be noted that in the context of this second embodiment of the bolt lock 1, the internal follower 60 has a structure substantially identical to the follower 9, described above in the description, and corresponding to the first embodiment. Thus, this internal follower 60 is formed of three distinct parts capable of causing, as mentioned above, the displacement of the operating rods 5 or of the latch bolt 7.

The external follower 61 is of the monobloc type and has in its center an orifice 63 serving to receive the operating square of the control button accessible on the external face of the opening. It is moreover provided with a crown 76 provided with a toothed sector 64 intervening at the level of a rack 65 machined on the easel 19. Of course, it may be envisaged to adopt the boss-cutting solution to ensure driving the bridge 19 through this external follower 61.

As for the key element 62, it intervenes, more particularly, on the deadbolt 8, constituting a central locking point of the bolt lock, in accordance with the invention.

As before, this deadbolt 8 comprises a body provided with a safety device 45 preventing any direct action on said deadbolt 8 exerted, for example, from outside the dwelling.

Likewise, the lock-bolt 1, in accordance with the second embodiment, is provided with a locking member 24 capable of preventing the movement of the operating rods 5 or of the bridge 19 once locked. As for the anti-false operation device44, condemning any action of the key element 62 on the deadbolt 8 when the operating rods 5 are in the unlocked position, the latter is brought to cooperate, in this case with the external follower 61 It will be noted, in this regard, that the latter has, on the periphery 77 of its crown 76, a recess 78, in which the upper end 50 of the rod 49 can engage, constituting this anti-false operation device 44 for release the safety device 45, acting on the deadbolt 8, when the operating rods are locked.

According to the invention, the bolt lock 1 allows, in addition, the control of the latch bolt 7, by means of the key element 62 and this, whatever the embodiment envisaged. To this end, said bolt lock 1 comprises means 66 making it possible to actuate the follower 9 or, in the context of the second embodiment, the inner follower 60 using this key element 62 and, finally, to order the reverse of the latch bolt 7.

According to a preferred embodiment, shown, more precisely, in FIG. 2, the means 66 are constituted by a transmission element 67 deferring the rotation of the bit 46 of said key element 62 on the third part 20 of the cooper 9 or 60 cooperating with the tail 68 of the latch bolt 7. In fact, this transmission element 67 is formed by a lever connected by an articulation 69 to the body 70 of this third part 20 of the follower 9 or 60 pivotally mounted on the core 10. Said lever extends, moreover, in the housing 2 until it reaches the key element 62 and has its free end 71, curved in the form of a square, so as to constitute a support plane 72 on which the bit 46 acts.

Outside the articulation 69, the transmission element 67 is held in position in the housing 2 relative to the remainder of the control mechanism 3, by guide means 73. Advantageously, these are associated with the member blocking 24 sliding on the deadbolt 8.

This arrangement makes it possible to cause the end 71 of said lever to be erased during the locking command, relative to the deadbolt 8 and thus ensure the passage of the bit 46 of the key element 62.

The additional advantage which the association of the guide means 73 provides with the locking member 24 and not with the deadbolt 8, consists in that the control of the latter does not, however, generate an identical displacement of the lever . Indeed, a displacement of such amplitude would require the design of a more spacious housing 2 and, consequently, of increased depth, a problem to which it is advisable to provide a solution.

Preferably, the guide means 73 consist of a lug 74 which projects laterally on the locking finger 37 of the locking member 24 and slides in a slot 75 provided in the transmission element 67. Of course, it can be considered other solutions for guiding the lever relative to this locking member 24.

Thus, it can be seen that, when the key element is brought bringing the deadbolt into the blocking position, the lever performs a displacement of amplitude identical to that of the blocking member 24 coming to cooperate with the bridge 19 for immobilize the latter in the locked position. It will be noted that this clearance of the lever remains however sufficient to ensure the passage of the bit 46.

The advantages which the present invention provides consist essentially of a reduction in the width of the cremone bolt casing while retaining a central locking point capable of ensuring the locking of the operating rods 5 in the locked position.

Furthermore, note the versatility of the parts of the control mechanism and, in particular, of the set, deadbolt - blocking member, since it can be adapted to locks and bolts with different shank sides.

Claims (13)

1. Bolt lock (1) for a door, window or the like, comprising a control mechanism (4) accomodated in a casing (2) and comprised of:

   - at least one tumbler (9, 60, 61) actuated from the inside and/or the outside of the wing to simultaneously act onto at least one operating rod (5) or a rider (19) connected to this latter and a latch bolt (7),

   - and means (66) for controlling the drawing back of said latch bolt (7) through a key member (62) acting onto a locking organ (24) capable of immobilizing the operating rod or rods (5) or the rider (19) in locked position,
   bolt lock (1) characterized in that it comprises, in combination:

   a) a dead bolt (8) actuated by the key member (62) and provided with said locking organ (24),

   b) means (25) for adjusting the displacement of the locking organ (24) with respect to the distance (32) separating same from the operating rod (5) or from the rider (19), irrespective of the sliding length of the dead bolt (8),

   c) an anti-false-manoeuvre device (44) for annihilating any action of the key member (62) onto the dead bolt (8) when the operating rod or rods (5) is (are) in unlocked position,
   furthermore, said means (66) allowing to actuate the tumbler (9, 60) through the key member (62) and co-operating with the locking organ (24) immobilizing the operating rods (5) or the rider (19) in locking position.
2. Bolt lock according to claim 1, characterized in that the means (25) are comprised of a connection (29) connecting the locking organ (24) to the dead bolt (8) while authorizing an idle stroke (30) with respect to each other in a direction parallel to the sliding of said dead bolt (8).
3. Bolt lock according to claim 2, characterized in that the idle stroke (30) has a length (31) corresponding to the difference between the distances (32, 33) separating the locking organ (24) and the dead bolt (8), respectively, from their unlocking position with respect to their locking position.
4. Bolt lock according to claim 2, characterized in that the connection (29) is substantially formed by a slot (34) made in the upper edge (35) of the dead bolt (8) and in which slides the locking organ (24).
5. Bolt lock according to claim 4, characterized in that the locking organ (24) is comprised of, on the one hand, a locking catch (37) capable of co-operating with a slot or a cut (38) made in the rider (19) or the operating rod (5) and, on the other hand, a body (36) provided, on its lower edge (40), with a catch pin (39) engaged into the slot (34).
6. Bolt lock according to claim 5, characterized in that the slot (34) has a front (41) and a rear vertical edge (42) forming driving thrusts capable of co-operating with the catch pin (39) of the locking member (24) when controlling the unlocking and the locking of the dead bolt (8).
7. Bolt lock according to claim 1, comprising a safety device (45) for locking the dead bolt (8) in unlocked and/or locked position, including a control foot (47) actuated by the web (46) of the key member (62) and capable of sliding vertically to the dead bolt (8) to unlock this latter, characterized in that the anti-false-manoeuvre device (44) consists of means (48) for immobilizing the safety device (45) in locking position by maintaining the control foot (47) in lower position and annihilating any action of the web (46) of the key member (62) onto this latter when the operating rod or rods (5) are unlocked.
8. Bolt lock according to claim 7, comprising a tumbler (9, 61) provided with at least one crown (16, 76) capable of controlling the operating rod or rods (5) or the rider (19), characterized in that the means (48) are comprised of a rod (49) vertically extending above the control foot (47) and co-operating, at its upper end (50), with the crown (16, 76) of the tumbler (9, 60), said crown (16, 76) having the function of a cam.
9. Bolt lock according to claim 8, characterized in that the crown (16, 76) has, at its periphery (51, 77), a set-back (52, 78) into which is accomodated, under the action of springy restoring means (53) acting onto the rod (49), the upper end (50) of this latter when the operating rod or rods (5) are in locked position, in order to release the safety device (45) and, viz., the control foot (47).
10. Bolt lock according to claim 8, characterized in that the body (36) of the locking organ (24) includes, at its rear end (57), a vertical groove (58) ensuring the passing through of the rod (49).
11. Bolt lock according to claim 1, comprising a tumbler (9, 60) formed of a core (10) co-operating with springy restoring means (14) and a crown (16) actuating, through a rider (19), the operating rods (5), driving a third part (20) acting onto the shaft (68) of the latch bolt (7), characterized in that the means (66) are formed by a transmission member (67) transferring the rotation of the web (46) of the key member (62) onto the third part (20) of the tumbler (9, 60) co-operating with the latch bolt (7).
12. Bolt lock according to claim 11, characterized in that the transmission member (67) is formed by a lever connected through a hinged joint (69) to the third part (20) of the tumbler (9, 60), this lever extending in the casing (2) until it reaches the key member (62) and having its free end (71) bent into an angle-iron to form a bearing plane (72) co-operating with the web (46).
13. Bolt lock according to claims 5 and 11, characterized in that the transmission member (67) co-operates with guiding means (73) integral with the locking organ (24) actuated by the dead bolt (8), said guiding means (73) being formed by a catch (74) being laterally protruding over the locking catch (37) of the locking organ (24) and co-operating with a slot (75) made in the transmission member (67).

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