EP1849941B1 - Sash bolt or sash bolt-lock type locking fitting. - Google Patents

Abstract

The fitting has a control mechanism (4) acting on a control part (8) such that a latch bolt (9) is displaced in a case (5). The mechanism has a transmission unit (10) in the form of a connecting rod ensuring a vertical displacement of a positioning bar (6) or stud due to the horizontal displacement of the control part. The rod is integrated to the control part and the bar using two hinges (12, 13), respectively. The rod has a pivot (14), between the hinges, movably mounted in the case for defining an instantaneous rotation axis around which an axle of the hinge (13) pivots for driving the bar.

Description

The invention relates to a cremone or espagnolette-lock type locking fitting comprising, housed in a housing, a control mechanism designed capable of acting on at least one control member, of the locking bolt type, the winding bolt or the like. , designed to move in said housing in a direction perpendicular to the direction of movement of at least one operating rod or an easel, said control mechanism having transmission means in the form of at least one rod designed designed to ensure a vertical displacement of at least one rod or bridge under the impulse of a horizontal displacement of said control member in said housing, said rod being secured to a first hinge of said control member and a second hinge of said rod or easel.

The present invention will find application in the field of building hardware and relates, more particularly, locking fittings of the type espagnolette or espagnolette-lock.

We already know a locking fitting as described above, particularly through the document FR-A-2.871 501 .

Thus, in this document, there is described a espagnolette-lock such as a espagnolette bolt or cylinder having, housed in a housing, a control mechanism comprising a follower designed to act, under the action of a handle, on one or more operating rods, knowing that this control mechanism further comprises a key cylinder designed to actuate at least one dead bolt.

In addition, transmission means connect the deadbolt to the maneuvering rod or rods and are designed to reflect the less partially a control of said dead bolt on this or these rods, knowing that drive means still connect the follower to the dead bolt.

More particularly, the transmission means are designed in the form of a toggle joint capable of pushing a rod in a displacement perpendicular to the drive control of the deadbolt. More exactly, these transmission means are in the form of a link mounted articulated on the one hand on the tail of the deadbolt and on the other hand, on said operating rod.

In fact, as is apparent from this prior document, it is through the follower that one acts in part on the rods of maneuvering and the deadbolt which one just start the locking stroke. This is completed via the key cylinder.

One can still consider a complete control by means of this barrel, in other words, that the control in horizontal displacement of the dead bolt is translated, under the effect of the rod which connects it to the rod of maneuvering in a vertical displacement of the latter.

The disadvantages of this design result from the efforts likely to be transmitted to the various moving parts.

In particular, the greater the distance in a vertical direction, which separates the pivot axes of the link on the rod on the one hand and the deadbolt on the other hand, is important, the higher the torque arm is so that the efforts transmitted to the dead bolt are able to overcome a displacement resistance force provided by said rod.

However, precisely, this torque arm is weak at the beginning of the locking control corresponding to the entry into their respective lock of the locking member actuated through said rod. In other words, when we have a weak torque arm, it is at this moment that it should be applied on the rod a maximum effort to overcome the resistance forces it is brought to meet.

The solution is to extend the link which has an obvious impact on the size of the control mechanism of the lock fitting.

Another disadvantage of this solution corresponding to the state of the art is that the amplitude of vertical movement likely to be communicated to a rod or maneuver is, again, limited so that depending on the game existing rebate between the leaf of a door and its fixed frame, it is not certain at the end of closure that the locking members have fully gained their locking position in their striker.

The solution proposed by the present invention aims to overcome the aforementioned drawbacks.

Thus, the invention relates to a locking fitting of the cremone or espagnolette-lock type comprising, housed in a housing, a control mechanism designed capable of acting on at least one control member, of the locking bolt type, winding bolt or other, adapted to move in said housing in a direction perpendicular to the direction of movement of at least one operating rod or an easel, said control mechanism having transmission means in the form of at least one designed rod fit to ensure a vertical displacement of at least one rod or bridge under the impulse of a horizontal displacement of said control member in said housing, said rod being secured to a first articulation of said control member and a second articulation of said rod or bridge, characterized in that between said first and second joints, the rod comprises a pivot axis parallel to the hinge pins mounted movable in a guided manner in translation vertical in said housing to define an instantaneous axis of rotation about which rotates, for driving the actuating rod of the bridge, the second axis of articulation of said link.

The advantages that flow from the present invention consist in that the movement of the operating rod or the bridge results from a combined movement of vertical displacement at the rod and the rotation of the axis of articulation which connects this link at the bridge around this pivot so that at the beginning of locking control, the movement of the rod or the bridge results, essentially, a vertical displacement of the pivot, so the instantaneous center of rotation, while in the end movement this movement is essentially the result of the rotation of the rod about the pivot, more precisely the lever arm that defines the portion of this link between the second axis of articulation which connects to the rod to the aforementioned pivot.

In sum, at the end of locking, there is a reduction of the movement which has the effect of printing the bridge or a drive rod a complementary displacement ensuring locking.

According to another feature of the present invention, the action of the control member, for example the deadbolt, on the rod has the effect of printing to the pivot, guided in vertical translation in the housing, a force decomposing into a vertical and horizontal component. This horizontal component generates, through the guidance of the housing, a reactive force, which results in friction forces likely to oppose the vertical displacement of the pivot. In other words, these frictional forces can generate a resistance greater than the vertical component of the force impressed on the rod by the control member. This problem is particularly troublesome at the end of unlocking where precisely, as recalled in the introductory part, the lever arm, corresponding to the distance separating the hinge pin on the control member and the pivot is smaller in because of a low angle of inclination of the rod relative to the horizontal. Under these conditions, the horizontal component tends to grow strongly and the operating rod or the bridge can not regain its fully unlocked position without undue effort exerted on said controller.

According to the invention, the locking fitting comprises means for compensating these frictional forces of the pivot relative to these vertical translational guiding means in the housing.

According to a preferred embodiment, these compensation means are in the form of a ramp on which the rod is provided able to bear, particularly during this final unlocking phase so as to oppose this horizontal component of the force. traction exerted by the control member on said link.

• la figure 1 est une représentation schématisée d'une ferrure de verrouillage du type crémone appliquée à un vantail tel qu'une porte ;
• la figure 2 est une représentation schématisée partielle et ouverte d'un boîtier de mécanisme de commande de ferrure de verrouillage de type crémone conforme à l'invention étant illustré en position déverrouillée ;
• la figure 3 est une représentation schématisée en coupe selon III-III de la figure 2;
• la figure 4 est une vue similaire à la figure 2 illustrant le positionnement des éléments du mécanisme en position de verrouillage ;
• les figures 5 et 6 correspondent à des vues similaires aux figures 2 et 4, les éléments du mécanisme étant illustrés dans leur positionnement en cours de déverrouillage progressif.

The present invention will be better understood on reading the following detailed description relating to an embodiment and whose understanding will be facilitated by reference to the accompanying drawings.

• the figure 1 is a schematic representation of a locking mechanism of the espagnolette type applied to a leaf such as a door;
• the figure 2 is a schematic partial and open representation of a cremone type locking mechanism control mechanism casing according to the invention being illustrated in the unlocked position;
• the figure 3 is a schematic representation in section along III-III of the figure 2 ;
• the figure 4 is a view similar to the figure 2 illustrating the positioning of the elements of the mechanism in the locking position;
• the Figures 5 and 6 correspond to views similar to figures 2 and 4 , the elements of the mechanism being illustrated in their positioning during progressive unlocking.

The invention relates to the field of lock fittings type espagnolette, espagnolette lock or the like. Thus, as visible in the figure 1 such a cremone or espagnolette-lock 1 can be applied to a leaf such as a door 2 provided adapted to come close on a frame 3.

This espagnolette or espagnolette-lock comprises a control mechanism 4 which is housed in a housing 5 which, according to a design mode, can be mounted on the door leaf or be embedded in the front edge of the latter.

This cremone or espagnolette-lock also comprises one or more operating rods 6 extending above and / or below said housing 5, maneuvering rods designed capable of acting on locking members provided to cooperate with strikes 7 implanted in correspondence on the dormant frame.

It should be noted that the same upper and / or lower extremity of such an operating rod 6 may in itself constitute an organ of planned lock adapted to engage in a strike 7 located in the upper part of the frame 3 or at the threshold of the door.

By referring to Figures 2 to 6 it will be noted that this control mechanism 4 of said espagnolette or espagnolette-lock 1 comprises at least one control member 8 which can take the form of a bolt-type locking bolt, latch bolt, 9 designed adapted to move transversely in the housing 5, displacement that will be described as horizontal relative to the vertical movement that borrows or the operating rods 6.

Said control mechanism 4 further comprises transmission means 10 in the form of at least one rod 11 designed capable of ensuring a vertical displacement of at least one operating rod 6 under the influence of the horizontal displacement of said control member 8. Note in this connection that this control member 8 can transmit the movements in the opposite direction to two operating rods 6 extending respectively above and below the housing 5. This transmission can also be provided through a bridge on which said link 11 acts, bridge then connected to this or these rods 6.

Also, it will be understood in the following description, when reference is made to an operating rod, that it can actually correspond to such a bridge.

To return to the rod 11 defining the transmission means 10, it is connected by a first hinge 12 to the control member 8 and a second hinge 13 to said operating rod 6, knowing that, according to a feature of the invention, between the first 12 and the second articulation 13, the link 11 comprises a pivot 14 mounted in a guided manner in vertical translation in the housing 5, in order to define an instantaneous axis of rotation around which is rotated, for driving said operating rod 6, the second hinge axis 13 of said rod 11.

More exactly, as visible in the figure 3 , the pivot 14 cooperates with an oblong slot 16 formed in one of the walls 17 of the housing 5. In this connection, it should be noted that this pivot 14 could cooperate with oblong slots 16 symmetrically arranged in each of the side walls of said housing 5.

Similarly, it will be observed that according to the illustrated embodiment, in line with the pivot 14, said operating rod 6 comprises a circulation opening 18 allowing its free movement in the housing 5 with respect to this pivot 14.

It will be noted, again, that the pivot 14 that comprises the rod 11 is offset with respect to the plane passing through the hinge pins 12 and 13, so as to define between the first axis 12 and the pivot 14, a first lever arm 11A and between the pivot 14 and the second hinge pin 13 a second lever arm 11B.

Thus, as is more particularly apparent from the figure 2 , starting from an unlocked position which illustrates this figure and subjecting the control member 8 to a horizontal displacement, displacement that will be described in the locking direction, assuming that said control member 8 constitutes, for example, a deadbolt or the like, this results in an identical displacement of the first axis of articulation 12 resulting in an upward vertical thrust on the pivot 14 at the same time as a rotation of the rod 11, this rotation being reflected by a pivoting of the second hinge axis 13 of said link 11 around the pivot 14.

It will be noted in this connection that the second hinge pin 13 which connects the rod 11 to the operating rod 6 has a certain mobility at least transverse to said operating rod 6, the latter comprising an oblong slot 19 for this purpose. This oblong slot 19 is defined in length, in the horizontal direction, at least equal to the transverse travel that the second hinge pin 13 can have under the effect of its rotation around the pivot 14 between the unlocked positions and the locked positions. .

However, as illustrated on the figure 2 , the oblong slot 19 is designed inclined at an angle α relative to the horizontal so that under the effect of the transverse displacement of the second hinge axis 13 resulting from the pivoting of the rod 11 around the pivot 14, it follows a complementary vertical displacement of the operating rod 6.

• de l'amplitude du déplacement vertical du pivot 14 par rapport au boîtier 5 ;
• de l'angle de rotation du second axe d'articulation 13 par rapport à ce pivot 14 ;
• et de l'amplitude du déplacement transversal de ce second axe d'articulation 13 dans la lumière inclinée 19.

In sum, the amplitude of the vertical displacement of this operating rod 6 results:

• the amplitude of the vertical displacement of the pivot 14 relative to the housing 5;
• the angle of rotation of the second hinge axis 13 with respect to this pivot 14;
• and the amplitude of the transverse displacement of this second articulation axis 13 in the inclined light 19.

The more particular advantages resulting from the present invention are made visible with reference to FIGS 5 and 4, respectively, from a virtually locked position to the locking position.

In this case, it can be seen that under the effect of a strongly inclined or even almost vertical implantation of the rod 11, as regards its first lever arm 11A, a complementary displacement of the control member 8, providing a displacement horizontal axis of the first axis of articulation 12, engenders only a small vertical displacement of the pivot 14. However, the angle of rotation thus printed to said link 11 is directly reflected on the operating rod 6 through the rotation of the second articulation axis 13 around this pivot 14.

Conversely, during locking, the second lever arm 11B, by rotation about the pivot 14 comes to ensure a reduction of the movement to bring the operating rod 6 at a sufficient amplitude from its locking position in the unlocked position.

However, advantageously, on at least part of the unlocking stroke, more particularly in the final part of this stroke, the fitting according to the invention comprises means 20 for compensating the transverse reaction force of the pivot 14 in its guide light 16 in the housing 5.

Indeed, as can be seen at the level of figure 2 during this final unlocking phase, the horizontal traction exerted by the control member 8 on the first hinge axis 12 of the rod 11 has the effect of printing a force with a large horizontal component on the pivot 14. Without such compensating means 20, this horizontal component force results in non-negligible friction forces which can be, in modulus, greater than the vertical component force also printed at the pivot 14. It may therefore result in a situation blocking.

Thus, the compensation means 20 are defined by a boss 21 designed adapted to cooperate with a support ramp 22 formed accordingly in the housing 5, knowing that the boss 21 and said ramp 22 are shaped to provide on the race chosen, a counter-reaction force equal to said horizontal component of the force exerted by the rod 11 on the pivot 14.

Thus, the boss 21 is defined able, under the effect of the movement of the rod 11, to roll along the ramp 22 around an instantaneous axis of rotation lying in the same horizontal plane as the instantaneous axis of rotation 15 defines that the pivot 14 during its progression in the guiding light 16.

As it is illustrated in the figure 3 , the rod 11 may comprise holding means in the housing 5 in a direction transverse to the median plane of the latter.

These holding means are here defined as peripheral bosses avoiding, in particular, the release of the pivot 14 of the light 16 or that of the second articulation axis 13 of its light 19.

Such a maintenance opposes, moreover, any buckling effect.

As can be seen from the foregoing description, the present invention has advantageously remedied the problem of the state of the art.

Claims (11)

1. Locking fitting of the type espagnolette (1) or espagnolette-lock including, placed in a housing (5), a control mechanism (4) designed capable of acting on at least one control organ (8), of the type blocking bolt (9), winding bolt or the like, designed capable of moving in said housing (5) in a direction that is perpendicular to the direction of movement of at least one operating rod (6) or a trestle, said control mechanism (4) including transmission means (10) in the form of at least one link (11) designed capable of ensuring a vertical movement of at least one rod (6) or trestle under the impulse of a horizontal movement of said control organ (8) in said housing (5), said link (11) being made integral with a first articulation (12) of said control organ (8) and by a second articulation (13) of said rod (6) or trestle, wherein between said first (12) and second (13) articulations, the link (11) includes a pivot (14) whose axis is parallel to said articulation axes (12, 13) mounted movable in a guided manner in vertical translation in said housing (5) with a view to defining an instantaneous rotation axis (15) around which pivots, in order to ensure the driving of the operating rod (6) or of the trestle, the second articulation axis (13) of said link (11).
2. Locking fitting according to the preceding claim, wherein said pivot (14), that said link (11) includes, is displaced with respect to the plane passing through said articulation axes (12) and (13), so as to define, between said first axis (12) and said pivot (14), a first lever arm (11A) and, between said pivot (14) and said second articulation axis (13), a second lever arm (11B).
3. Locking fitting according to one of the preceding claims, wherein said pivot (14) is designed capable of co-operating with at least an oblong aperture (16) made in one of the walls (17) of said housing (5).
4. Locking fitting according to one of the preceding claims, wherein said second articulation axis (13) that connects said link (11) to said operating rod (6) is mounted movable at least transversally with respect to an oblong aperture (19) that said operating rod (6) includes.
5. Locking fitting according to the preceding claim, wherein said oblong aperture (19) is defined of a length, in the horizontal direction, at least equal to the transversal travel that can have said second articulation axis (13) under the effect of its rotation around said pivot (14) between the unlocked positions and the locked positions.
6. Locking fitting according to one of the claims 4 or 5, wherein said oblong aperture (19) is designed inclined according to an angle (α) with respect to the horizontal.
7. Locking fitting according to one of the claims 3 through 6, wherein it includes, on at least one portion of the unlocking travel, in particular in the final portion of this travel, means for compensating (20) the transversal reaction force of the pivot (14) in its guiding aperture (16) in the housing (5).
8. Locking fitting according to the preceding claim, wherein said compensation means (20) are defined by a boss (21) designed capable of co-operating with a support ramp (22) made correspondingly in said housing (5), said boss (21) and said ramp (22) having a shape designed capable of imparting on the chosen travel, a counter reaction force equal to said horizontal component of the stress exerted by said link (11) on said pivot (14).
9. Locking fitting according to the preceding claim, wherein said boss (21) is defined capable, under the action of the movement of the link (11), of rolling along said ramp (22) around an instantaneous rotation axis situated in the same horizontal plane as said instantaneous rotation axis (15) that said pivot (14) defines during its progression in said guiding aperture (16).
10. Locking fitting according to one of the preceding claims, wherein said link (11) includes support means in said housing (5) in a direction that is transversal to the median plane of the latter, said support means being in particular defined in the form of peripheral bosses.
11. Locking fitting according to one of the preceding claims, wherein, at right angle with respect to said pivot (14), said operating rod (6) includes a circulation opening (18) permitting its free movement in said housing (5) with respect to said pivot (14).

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