EP2586938B1 - Device for locking an openable wing - Google Patents

Description

The present invention relates to locking devices provided for the sliding doors or windows.

A known design of sliding doors in the building is to form a fixed frame relative to the masonry around the entire periphery of a bay and to close by a movable leaf that slides in the plane of the frame forming a frame. The frame may consist of rails allowing the sliding of the opening to an amount of frame against which bears the opening when the bay is completely closed. We find these designs for example in the windows.

An amount before the opening, namely that which bears on the amount of the frame in the closed position, is provided with a locking device so as to lock the opening against the frame when in the closed position . Hook locking devices are known in which hooks carried by the front post of the opening cooperate with latches dug in the frame. The hooks are attached to a rod which is mounted along the front upright and which is movable along this upright by the action of an operating member attached to a lock housing which is recessed on the door and which comprises the mechanical means necessary to transform the action exerted on the actuating member, for example by means of a handle, in a displacement in translation of the rod, which makes the rod and the hooks pass from a passive position an active locking position where the hooks are locked in the corresponding locks.

Such a design presents a risk as to the possibility of picking in violation of the locking device for an attempted break-in. An individual will be able to try to clear the hooks of the locks by passing a room between the frame and the amount before the opening facing to lift or
lower the hook, and slide along the opening the carrier rod hooks.

In order to fight against the picking of this type of lock, the manufacturers try to design sash and frame amounts which have profiled shapes dug so that the hook and the corresponding strike are not directly accessible from the outside.

In the patent application FR2678671 it has been proposed a device for locking a sash amount against an amount of frame and according to which a cremone comprises means for locking the operating rods in the locking position, said means being in the form of a lever of blocking rotatably mounted on at least one operating rod adapted to cooperate with a keeper arranged in the housing enclosing the control mechanism. The patent application FR2929978 discloses a reversible espagnolette lock which may comprise a locking device which is formed and arranged to prevent forced translation of the actuating members consisting of two coupled plates, said locking device being able to be formed of two plates having two symmetrical arc-shaped housings. circle which guide the drive rods of the actuating plates between their two ends shaped to lock the rods, the two locking plates being located on either side of the actuating plates and the drive rods being introduced by one side one of the two locking plates.
The patent US5820170 discloses a multi-point sliding door closure adapted to be mounted in a single opening in the locking face of a jamb of the sliding door and arranged to cooperate with a retaining structure on an associated post and to cooperate with a mounted operating assembly on the amount of the sliding door and comprising a male element actuated by a rotating bar or a locking key. It may comprise locking hooks each associated with a locking device provided with a spring mechanism holding a pin pin connected to the hook, at the end of stroke of a curved groove, opposing forced translation of the hooks. Guide pins of the actuator elements are guided in the grooves in the housing. These grooves comprise a guide portion and a locking portion which extends said guide portion forming a perpendicular angled end. The patent application GB2240809 describes a self-locking mechanism suitable for garage doors opening vertically.

The aim of the invention is to propose an alternative to known locking devices which is particularly effective against burglary and which can be adapted to all types of locking by hook locking, while seeking to obtain a device that is simple to manufacture, robust, without additional maneuvering operation for the user, and which is also inexpensive.

For this purpose, the invention proposes a device for locking an opening against a frame by the cooperation of a hook associated with an amount of sash and a strike dug in a frame, wherein the hook is carried by a rod adapted to slide on itself along the sash jamb between a passive position and an active locking position in which the hook is locked in the striker. In such a device, a lock housing is mounted on the opening and it encloses a force transmission mechanism adapted to transform the movement of an actuating member to control the translation of the rod along the amount. According to the invention, the force transmission mechanism comprises a guide pin which is connected to the rod and which is adapted to move between a first extreme rest position and a second extreme safety position under the action of the maneuvering organ. The guide pin is in its rest position when the rod is in its passive position while the guide pin is in its safety position when the rod is in its active locking position. In this extreme safety position, the guide pin is locked in both directions in the direction of movement of the rod so that the rod is locked in translation along the amount of the opening.

Thus, when one seeks to force the movement in translation of the rod to clear the hooks latches, without using the operating member, the guiding pin of the mechanism remains in its extreme safety position since in the direction of the translation of the rod, it is blocked in both directions. Advantageously, it is intended to make an action on the actuating member necessary to disengage the guiding pin from its safety position, whereas if the operating member is locked by a key, the device then becomes inviolable.

According to the invention, the guide pin is held in a slot which extends in the direction of movement of the rod and which has a bent end perpendicular to said displacement corresponding to said safety end position. This slot is advantageously formed of two slots arranged facing each other, each of these slots comprising a guiding portion which extends in the direction of movement of the rod as well as a locking portion which extends said guide portion. forming a bent end perpendicular to said displacement and wherein the guide pin is in said second extreme safety position. The guide pin has a central portion and two end portions disposed on either side of the central portion and adapted to be housed respectively in one of said two slots.

The guide is thus guided by its ends along the two slots, which is very effective and very robust to take it to the safety position.

More particularly according to the invention, the slots arranged vis-à-vis for guiding and locking the guide pin are symmetrical with respect to the median plane of the lock housing.

Preferably according to the invention, the lock housing is formed of two shells adapted to enclose the force transmission mechanism and the two slots in which the guide pin is held are respectively present on one of said shells, so that symmetrical with respect to the plane of joining said hulls. The two end portions of the guide pin disposed on either side of the central portion are housed respectively in one of these slots.

According to a particularly advantageous arrangement of the invention, the first element of the force transmission mechanism is formed by a cam which is actuated by the operating member, and the second element of this mechanism is formed by a slider which is secured. of the rod. The cam and the slider are made integral in displacement by the action of the guide pin which is arranged simultaneously in grooves respectively formed on the cam and the slider.

Thus, it guides the movement of the pin from the first extreme position to the second extreme position and it is ensured that during the locking of the opening by the handling of the actuating member, it is possible to place the guide pin in its extreme security position.

The end portions of the guide pin each have a diameter distinct from that of the collar and substantially equal to the width of the slots in which the pin is held, said central portion preferably having a diameter substantially equal to the width of the grooves respectively made on the cam and the slider. It is possible to provide either a central portion of larger diameter than the end portions or the reverse as long as the width of the grooves or corresponding slots are in adequacy. In any case, it is advisable to ensure that the guiding pin is locked inside the casing, in the direction perpendicular to the directions of movement of said guiding pin.

According to a characteristic of the invention, the grooves formed on the slider and the cam have a depth of dimension greater than the dimension of the diameter of the central portion of the guide pin. This ensures the game necessary for the operation of the force transmission mechanism.

The invention also relates to a bay window comprising a sliding leaf locking against an amount of frame according to the locking device as described above.

• la figure 1 qui représente une porte-fenêtre avec l'ouvrant coulissant en position ouverte, vue de trois quart pour rendre visible le montant de l'ouvrant sur lequel est fixée une tringle porteuse de crochets de verrouillage de l'ouvrant,
• la figure 2 qui est une vue éclatée du dispositif de verrouillage de l'invention, avec le boîtier de serrure et la tringle qui sont adaptés à être monté sur l'ouvrant de la figure 1,
• et les figures 3, 4 et 5 qui sont des vues en coupe dans un plan vertical du boîtier de serrure et de la tringle dans des positions dynamiques successives d'ouverture, de mi-course et de verrouillage.

The invention will now be more fully described in the context of preferred features and their advantages, with reference to Figures 1 to 5 in which :

• the figure 1 which represents a French window with the sliding leaf in the open position, viewed three-quarters to make visible the amount of the opening on which is fixed a bead carrier hooks of the door,
• the figure 2 which is an exploded view of the locking device of the invention, with the lock housing and the rod which are adapted to be mounted on the opening of the figure 1 ,
• and the figures 3 , 4 and 5 which are views in section in a vertical plane of the lock housing and the rod in successive dynamic positions of opening, mid-stroke and locking.

In the description which follows, reference is made to the trihedron L, V, T represented on the Figures 1 to 5 which conventionally defines the longitudinal axis, the vertical axis and the transverse axis.

As illustrated on the figure 1 , an opening 2 is adapted to slide longitudinally in a frame 4 so as to open or close the bay. The opening is here represented in a semi-opening position and it comprises a window 6 embedded in the sash amounts of which a vertical upright 8 is adapted to come against a dormant amount 9 in the closed position of the opening . In this closed position, the opening can be locked on the frame, that is to say that it can be immobilized in its closed position against the frame. For this purpose, hooks 10 are attached to a rod 12, which is adapted to slide vertically on itself along the front upright between a passive position and an active locking position. In the passive position, the opening can be slid into the frame without the hooks hindering its movement. The opening can be brought into a position of closing the bay with the amount before plated against the amount of dormant, without the protruding hooks interfere. In the second locking position, only available when the leaf is pressed against the frame by an anti-false maneuver device (not shown in the figures and otherwise known per se), the hooks are housed in strikes made in the frame and the translation of the rod has jammed the hooks so that the opening can not open.

The locking of the opening relative to the frame is thus obtained by the vertical sliding of the rod and associated hooks. The rod is guided in translation against the front upright by the action of an operating member, here a handle 14, mounted on the same upright by means of a housing 15, and a transmission mechanism. forces 16 integrated in a lock housing 18, not visible on the figure 1 car embedded in the amount of opening but described below and illustrated on the Figures 2 to 5 .

Here, the longitudinal axis corresponds to the sliding direction of the opening in the frame, the vertical axis corresponds to the sliding direction of the rod on itself, and the transverse axis corresponds to the direction of the axis of rotation of the control member.

It will be understood that, without departing from the context of the invention, it will be possible to orient differently the opening relative to the frame, for example so that the opening slides in a vertical direction and the rod then slides on itself in the longitudinal direction.

The figure 2 represents the lock housing which comprises an integrated mechanism on which is fixed a rod 12, which extends longitudinally, by means of two screws 20 and 22.

The housing has a shape and dimensions adapted to fit into the front post 8 of the opening via a housing opening on the front end face of the amount.

The housing comprises two shells adapted to be fixed against each other, one forming the trunk 26 and the other forming the fillet 27. These two shells are substantially the same, it being understood that to allow their attachment, the trunk carries projecting indexing elements adapted to cooperate with recessed indexing elements correspondingly arranged on the funcet. The two shells are hollowed and drilled correspondingly to form, once fixed to each other, housings and passages for elements constituting a force transmission mechanism adapted to transmit a translational movement of the rod 12 from a rotational movement of the handle 4 about a transverse axis 5.

The force transmission mechanism comprises a follower 28, a guiding pin 30, a slider 32 and fixing nuts 34 and 36, adapted to receive the fixing screws of the rod 20 and 22.

The follower 28 is formed of a cylinder for receiving the transverse axis 5 and a cam 38 which extends radially from the cylinder and which has a transverse groove 40 adapted to receive the guide pin 30.

The guide pin 30 has a cylindrical shape with a central portion 42 and two end portions 43 of different diameter from that of the central portion so as to form two shoulders. Here, the diameter of the central portion is greater than that of the end portions, forming a central collar. As will be described below, the central collar and the end portions of the pin have diameters adapted to cooperate with grooves formed on the follower or slider and with a slot formed on the housing shells.

The slider 32 has substantially the shape of a parallelepiped whose one end face is adapted to be in contact with the rod and carries for this purpose a pin 44 indexing. The opposite face, turned towards the inside of the case, is partially hollowed out so as to form a hollow central part which is delimited by the lateral edges of the slider, by the inner surface of the end face, and by upper and lower solid parts in each of which is drilled an adjustment bore 46 and 48 of hexagonal section, which extends from the opposite side to the front face and which is adapted to receive an adjusting nut 34 and 36 whose inner thread cooperates with the fixing screws of the rod 20 and 22.

The fact that the force transmission mechanism comprises adjustment means makes it possible to adjust the relative positions of the fastening means of the rod on the mechanism and the handle housing in the lock housing and this is the object of the invention. a patent application filed by the applicant elsewhere.

The hollow central portion thus has dimensions adapted so that it can receive at least partly the cam 38 of the follower. The lateral edges each have a transverse groove 50, symmetrically disposed on either side of the hollow central portion. These grooves 50 each have a diameter adapted to receive the guide pin at the central collar of the pin.

When the force transmission mechanism is assembled and housed in the lock housing, the guide pin extends parallel to the square rod along a transverse axis, housed both in the groove of the follower and in that of the slide with the follower inside the slider.

The rod 12 here has two fixing holes 64 and 66 for the passage of the fixing screws 20 and 22, a slot 68 adapted to receive the indexing pin 44 when the slide is pressed against the rod and a light 70 adapted to leave passing a control finger 72 of an anti-false maneuvering device.

It is known to use anti-false maneuvering devices preventing movement of the rod via the slider when the opening is not in the closed position, pressed against the frame. The finger 72 is kept in the projecting position out of casing and beyond the rod by elastic means forming a spring, and the fact that it is protruding blocks the displacement of the rod by abutment of the edge defining the light 70 against the finger.

It will be understood that the finger 72 is shown in a projecting position on the Figures 3 to 5 because the frame is not represented, and that between the positions illustrated in figures 3 and 4 , one will have previously pressed the finger to allow the release of the hook disposed at the end of the slide relative to this finger.

As previously described, the housing shells have recesses and bores for the operation of the device. A recess 74 (visible for the trunk 26 and hidden by the funcet 27 on the figure 2 ) is arranged over substantially the entire height of the shells to create a receiving housing of the slide 76 when the housing is assembled. The housing 76 has dimensions adapted so that the slide can slide in the direction of movement of the rod without play in the perpendicular directions. The slider moves against a bottom wall 77 which forms a stop for the displacement of the fastening nuts inside the bores through the slider.

On the other hand, as this is visible figure 2 , this time for the trunk as well as for the funcet, the shells have a slot 78 each adapted to receive an end portion 43 of the pin 30 for its guidance, a transverse central bore 80 adapted to accommodate the cylinder of the follower 28 and two transverse fixing bores 82 and 84 on either side of the central bore 80 which have lateral flats and axial grooves for receiving and holding bushes 86 and 88, which are adapted to each receive a crankcase fixing screw handle.

Each of the slots 78 disposed facing each other has essentially a guide portion 90 which extends vertically in the direction of movement of the rod, and a locking portion 92 which extends longitudinally extending substantially perpendicularly. the guiding part to one of its ends. The locking portion is oriented toward the interior of the housing to approximate the central bore which will receive the follower so that the locking portion forms a bend oriented towards the guide pin.

Each slot thus has a bent shape that extends continuously from a first end 91 at the end of the longitudinal portion to a second end 93 at the end of the locking portion.

The slots have a width substantially equal to the diameter of the end portions of the guide pin, so that these end portions can be housed in the corresponding slot and that the central collar of the pin abuts with the inner face of the shell of the lock case.

The editing is done as follows:
All the constituent elements of the force transmission mechanism are housed in the lock housing between the trunk and the trunk, and in particular the follower 28 in the central bore 80 formed in the trunk and the trunk. The nuts 34 and 36 are placed in the adjustment bores 46 and 48 of the slider, as well as the securing bushes 86 and 88 in one of the peripheral bores 82 and 84 of the trunk and the trunk. The guide pin 30 is then placed both in the groove 40 of the follower and in the grooves 50 of the slide so that the central collar 42 of the pin engages these three grooves and the end portions 43 protrude by protrusion on both sides of the side walls of the slide. The slide is housed simultaneously in the inner housing 76 formed between the trunk and the trunk, and the lock housing is closed by pressing and screwing against one another the shells of this housing, making sure that the end portions of the guide pin are properly housed in the slots 78 formed in the trunk and the funcet.

It is observed that here the slots open on each side of the shells and that the end portions of the guide pin can pass through these slots. A possible variant not shown It would be to have non-emergent slots on the outer face of the hulls and end portions of the guide pin, of a suitable length, which are lodged against the bottom of these slots.

As previously described, the central collar is in contact with the internal faces of the shells of the lock housing. The collar is abutting on each of its sides. This ensures that there is no movement of the pin in the transverse direction and that it remains in engagement in the grooves made in the cam and the slide during operation of the system.

The rod is then attached to the mechanism so that it can follow the movements of the slide. To this end, the rod is slid against the slider, matching the light 68 of the rod with the indexing stud 44 of the slider or at least by placing in front of the holes 52 and 54, made in the end face of the slider, the corresponding holes 64 and 66 of the rod. The rod is then fixed by screwing the fixing screws 20 and 22 in the nuts 34 and 36 already arranged in the adjustment bores formed inside the slide.

Then the assembly formed by the housing and the rod on the opening. The rod is pressed against the front end face of the opening, to be ready to translate along the amount of the opening, while embedding the housing in a housing formed in the sash amount. Finally, the handle casing is screwed onto the lock casing, screwing the fixing screws into the casings 86 and 88.

The advantages of mounting the handle through the bushings are described in greater length in the patent filed by the plaintiff on the same day, along with the advantages that arise from mounting the rod by the adjustment means.

We will now describe the operation of the sash locking device in the embodiment shown, in particular by referring to Figures 3 to 5 .

When the door is closed, that is to say when the front post is pressed against the amount of frame, the user can operate the handle to lock the door. If this is the case, the rotation of the square rod causes rotation, around the axis defined by the square rod, both of the follower and the guide pin 30 which is engaged in the groove 40 formed in the cam 38 fouillot. The rotation of the pin also engaged in the grooves 50 formed in the side walls of the slide causes a displacement of the slide, kept in simple translation in the housing 76, and thus a displacement in translation of the rod which is screwed on the slide.

Thus, the rotational movement on the handle allows the translational movement of the rod along an amount of the opening for locking in a striker of the frame.

Advantageously, the guiding pin has end portions which form both stop means for preventing the pin from escaping out of the grooves in the transverse direction and guiding means cooperating with the slots to ensure that the pawn goes well from one to the other of its extreme positions.

The end portions of the guide pin are respectively housed in one of the bent slots and follow the movement of the slider along the longitudinal guide portion of these slots to the bent portion.

The grooves have a width substantially equal to that of the diameter of the collar for the good transmission of forces, while these grooves have a depth of dimension greater than the diameter dimension of the collar for the clearance and the operating clearance of the mechanism.

The dimension of the cam and the slider is provided so that it always remains in engagement with the guide pin, even in this extreme position. And as previously described, this position in engagement with the guide pin is elsewhere provided in the transverse direction by the abutment of the central part against the shells of the housing.

It is observed that the force transmission mechanism is adapted to move from a first extreme position ( figure 3 ) in which the guide pin abuts the end of the straight portion of the bent light at a second extreme position ( figure 5 ) in which the guide pin is in abutment against the end of the bent portion of the bent light. The figure 4 represents an intermediate position between the two positions mentioned above.

In the first extreme position of rest (visible on the figure 3 ), the end portions of the guide pin are respectively at the first end 91 at the end of the longitudinal portion of the corresponding slot, and the collar is on the one hand in the bottom of the groove formed in the slider and on the other hand at the edge of the opening of the groove formed in the cam. In the intermediate position (visible on the figure 4 ), the end portions of the guide pin are respectively at mid-height of the longitudinal portion of the corresponding slot, and the collar remained in the bottom of the groove formed in the slider while it is closer from the bottom of the groove formed in the cam. Finally, in the second extreme safety position, the end portions of the guide pin are found respectively at the second end 93 at the end of the locking portion of the corresponding slot, and the collar is at the edge of the opening. the groove formed in the slider and the edge of the opening of the groove formed in the cam.

In the second extreme safety position, the pin is in abutment against the edges delimiting the slot, in both directions of the vertical direction. To be able to exit from this safety position, it is necessary to manipulate the operating member in the unlocking direction so that the cam rotating in the opposite direction drives the locking pin firstly in the longitudinal direction along which the locking portion extends. slots and which is perpendicular to the direction of movement of the rod. In this way, the guiding pin is found again in the right guide portion and it is possible for it to descend along this guide portion causing the displacement in the vertical direction of the slide and therefore the rod. Thus, an action made directly on the hooks to try to lift or collapse in the vertical direction is made impossible since these hooks are integral with the displacement in translation on itself of the rod, which is here blocked since the slide is locked in the lock housing. If the actuator is not actuated, it is impossible for an intruder to force the displacement of the guide pin in the longitudinal direction and thus to unlock it from its extreme safety position.

This provides an anti-picking function by placing the guide pin in this extreme safety position in which it is blocked in both directions of the vertical direction, ie the direction translation on itself of the rod.

Depending on the type of opening, the locking can be performed either directly by the ends of the rod which are housed in latches arranged in the upper and lower amounts, or by means of hooks arranged on the rod and adapted to lodge in strikes formed in the vertical amount of the frame.

The foregoing description clearly explains how the invention achieves the goals it has set for itself. In particular, it provides a very robust locking device that can effectively fight against break-ins when the controller is blocked. The mechanical elements of this device are housed in the lock housing and they are inaccessible to an intruder, which provides increased protection against opening without manipulation of the control member. This also makes it possible to achieve the form of profiles desired by the design since it is no longer necessary to take into account the anti-picking constraints.

It nevertheless follows from the foregoing that the invention defined by the claims is not limited to the embodiments which have been specifically described and shown in the figures and that it may be provided by way of example of other forms of path for guiding the pin, since the second extreme safety position blocks the guide pin and thus the movement of the rod on itself in both directions of the transverse direction of movement of the rod. It may also be provided other forms of guide pin, without central collar projecting radially from the end portions, but with instead a central portion of diameter less than the diameters of the end portions of the pin, being understood that again, the central portion and the end portions of the guide pin have different diameters which makes it possible to stop the end stop here, the stop of the ends of the pin on the slide, the transverse displacement of the guide pin in the grooves .

Claims (6)

1. A locking device for a sash post (8) against a frame post (9) by the cooperation of a hook (10) associated to the sash post and a trowel recessed into said frame post, said hook being attached to a rod (12) adapted to slide on itself along the sash post between a passive and an active locking positions in which the hook is engaged and locked in the trowel, said device including a lock housing (18) mounted on the sash which contains a force transmission mechanism (16) adapted to transform the movement of an operating member (14) into a translation of said rod along said sash post,
   such that the force transmission mechanism (16) includes a guiding pin (30) provided so as to follow, on the one hand, the movement of a first element of the mechanism (28, 38) connected to said operating member (14) and, on the other hand, the displacement of a second element of the mechanism (32) connected to said rod (12), said guiding pin being adapted in order to move between a first extreme rest position corresponding to said passive position of the rod and a second extreme safety position corresponding to said active position for locking the rod and in which the guiding pin is blocked in the moving direction of the rod, in the two directions, and in that said guiding pin is further hold in two slits (78) provided facing each other, each of said slits including a guiding part (90) which extends in the displacement direction of the rod as well as a blocking part (92) which prolongs said guiding part by forming an end bent perpendicular to said displacement and in which the guiding pin is in said second extreme safety position, said guiding pin including a central part (42) and two end parts (43) provided on both sides of the central part and adapted to be respectively housed in one of said slits.
2. The locking device according to claim 1, characterized in that said lock housing (18) is made from two shells (26, 27) adapted to contain the force transmission mechanism (16), and in that the slits (78) in which is maintained the guiding pin (30) are respectively provided on one of said shells, in a symmetrical way with respect to the junction plane of said shells, the two end parts (43) of said pin being adapted to be housed respectively into one of said slits.
3. The locking device according to claim 1 or 2, characterized in that the force transmission mechanism (16) includes a cam (38) constituting said first element of the mechanism and being actuated by the operating member (14) as well as a slide (32) constituting said second element of the mechanism and being unitary with the rod (12), said cam and said slide being made unitary for displacement by the action of said guiding pin provided transversely into grooves (40; 50) respectively realized on said cam and said slide.
4. The device according to claim 3, characterized in that the end parts (43) of the guiding pin have each one a diameter different from that of the central part (42) and substantially equal to the width of the slits (78) in which the guiding pin (30) is maintained, said central part having a diameter substantially equal to the width of the grooves (40 ; 50) respectively provided on the cam (38) and the slide (32).
5. The device according to any of claims 3 to 4, characterized in that the grooves (40; 50) formed on the cam (38) and the slide (32) have a depth larger in size than that of the diameter of the guiding pin central part (42).
6. A picture window comprising a sliding sash (2) being locked against a frame post (9) according to the locking mechanism as described in any one of claims 1 to 5.

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