EP0770751A1 - Device for holding a wing ajar - Google Patents

Abstract

The lock fitting for a door comprises a locking bolt consisting of an operating rod extending on a door rabbet. It is displaced by a drive mechanism activated by a control handle or key cylinder (12). The door is held ajar by a support (23), fixed on the door frame, on which is pivoted one (25) of the ends of a compass arm (26). The opposite end (27) of the compass arm has a guide pin (29) or a roller. This pin slides inside a strike plate (30) in a support (31) which is fixed to displace with the operating rod placed on the door. This limits the opening angle of the door relative to the door frame. The fastener disengages from the strike plate following displacement of the operating rod, acted on by the handle, consequent to it opening the door wider.

Description

The invention relates to a locking fitting for a window, French window, door or the like, comprising a locking mechanism of the lever type comprising at least one operating rod extending at least partly in the rebate of the opening and controlled by movement by a drive mechanism actuated by a control element of the handle, key cylinder or the like type.

The present invention will find its application in the field of building hardware.

A good number of locking fittings corresponding to the above description are already known. In this regard, we particularly know, the locking fittings for tilt-and-turn window which not only allow the opening of the window by pivoting about a vertical axis of rotation, but also allow the ajar opening of this opening by tilting towards the interior of the dwelling around a horizontal axis of rotation materialized by the lower crossmember. In fact, in this case, the means for opening the opening are in the form of a compass arm connecting the upper cross member of the opening to a hinge fitting secured to the frame. This compass can be made free to rotate relative to the opening only under the action of a locking mechanism in the form of an operating rod. This is placed in a rebate at the upper edge of this opening and the movement control of which is ensured by means of an appropriate drive mechanism. The user acts on the latter by means of a control element, such as a handle. More precisely, under the action of this handle and, therefore, of the displacement of the operating rod, this results in the displacement of a fastening member, in the form of a stud associated with the operating rod, relative to a keeper precisely positioned on said compass arm. It is only under these conditions that said compass arm can, in fact, freely pivot on the leaf.

Mechanically speaking, this type of locking device for a tilt-and-turn window is particularly convenient since the same handle allowing the user to lock or unlock the window also serves as a control for the ajar opening of the window. opening it.

However, as can be seen in the context of these tilt-and-turn windows or French windows, when they are brought into their ajar position, ventilation necessarily occurs in the upper part of the opening. However, it is more and more common that such windows or glass doors extend almost to the ceiling of a room. It is obvious, under these conditions, that ventilation may prove to be insufficient, forcing users to open the window or French window to obtain the desired result. However, they are forced at the same time, to give up the security that gives them the position by killing. In particular, it is obvious that in such a position when shooting down, there is no risk of accident for the occupants, they cannot, in fact, fall out of the window inadvertently, or even when the user made use of heterogeneous objects, to block the ajar opening, which can cause the opening of the opening which can injure the user during his fall.

One understands, when these occupants are children, that one cannot give up this security by opening a leaf with the French on the pretext that the ventilation obtained in the position when knocking down is insufficient.

In this connection, there is also the technical problem of ensuring that the complete opening of the opening can only be obtained under the effect of a voluntary order executed by authorized persons. Thus, if it is necessary to prevent, in rooms occupied by children, for example, that the windows can open wide, it is necessary, however, to authorize such an opening to allow access to the glazed surface window exterior for cleaning and / or maintenance.

Again in such a fully open position of the window, it may be appropriate to limit the angle of rotation of the opening relative to the frame so as to avoid damaging the hinge fittings. Indeed, due to construction constraints but also to insulation from inside a house, it is not uncommon for a window to be housed inside the frame defining the opening in the construction intended to receive this window. Under these conditions and during the French opening of the opening, it comes to bear on the lateral spine of this frame and if, inadvertently, one comes to exert pressure on this opening bearing on the lateral spine, this creates a lever arm which results in a multiplied transmission of pressure on the hinge fittings which, of course, cannot always resist such stresses.

There are already a number of ajar devices able to limit the pivoting of the opening in the case, for example, of its French opening. However, to activate this type of gag, it is necessary to intervene, most frequently, on control means different from those authorizing the locking or unlocking of the opening. Such half-openers therefore make it compulsory to carry out an additional manipulation, often prohibitive, to activate them. Finally, these half-openers requiring, more often than not, a surface-mounted installation, they question the aesthetic appearance of the opening.

The present invention is intended to solve the aforementioned problems through a locking fitting provided with a device for holding the door in a partially open position which is capable of being activated by means of the locking mechanism, so that it turns out to be of great convenience of use.

Thus, in the very particular case of a window or French window with French opening, that is to say by pivoting of the sash around a vertical axis of rotation, this locking fitting offers the possibility to limit the French opening angle of this opening in order to gain security, knowing that it can also, in certain cases, limit this angle of rotation of the opening relative to the sleeping frame to avoid damaging the window itself.

The invention as characterized in the claims addresses all of these problems and consists of a locking fitting for window, French window, door or the like, comprising a locking mechanism, of the lever type, comprising at least one rod. of maneuver extending at least partly into the rebate of the opening and controlled in displacement by a drive mechanism actuated by a control element of the handle, key cylinder or the like, this locking fitting comprising at least one device to maintain, in a ajar position, the opening of said window or the like, this device being defined by a support fixed on the frame and on which one of the ends of a compass arm is articulated, the opposite end of which is fitted with hooking means, such as a nipple or a roller capable of sliding inside a keeper associated with a support mounted integral in displacement with an operating rod placed on the opening, this in order to limit the pivoting angle of the latter relative to the frame, said attachment means being able to disengage from said keeper as a result of a displacement of said operating rod under the impulse of the control element acting on the drive mechanism, for a larger opening of the opening.

The advantages arising from the present invention consist essentially in that the device making it possible to maintain the opening in the ajar position can be directly controlled by the handle or the key cylinder acting on the locking mechanism. Finally, this makes the locking fitting particularly convenient to handle. In addition, all of the elements constituting this locking fitting can be installed in the window rebate or the like which makes it completely invisible.

In addition, by limiting, through this locking fitting, the angle of rotation of the opening relative to the frame, in the context of a normal opening, for example, in French, we respond in a manner advantageous, to the difficulty of obtaining suitable ventilation which is not the case for the tilt-and-turn windows installed as described in the introductory part. At the same time, we respond to the concept of security required by this type of ajar opening of a window, French window or the like.

• la figure 1 représente une vue schématisée et en perspective d'une fenêtre équipée d'une ferrure de verrouillage conforme à l'invention ;
• la figure 2 représente une vue schématisée de cette ferrure de verrouillage venant équiper un ouvrant tel que représenté dans la figure 1 ;
• la figure 3 est une représentation schématisée du dispositif permettant de maintenir entrebâillé l'ouvrant par rapport au cadre dormant ;
• la figure 4 est une vue schématisée en perspective et éclatée du dispositif tel que représenté dans la figure 3, la position prise par les éléments étant celle correspondant à l'ouvrant entrebâillé ;
• la figure 5 est une représentation en élévation de la configuration prise par les éléments du dispositif tel que représenté dans la figure 4 lorsque l'ouvrant est entrebâillé ;
• la figure 6 illustre un élément de commande, sous forme d'une poignée dans une position qui peut correspondre aux situations illustrées dans les figures 4 et 6 ;
• la figure 7 est une vue similaire à la figure 4, les éléments étant représentés dans une position correspondant à la libre rotation de l'ouvrant par rapport au dormant ;
• la figure 8 est une vue similaire à la figure 5 représentant la disposition des différents éléments composant le dispositif à même de maintenir l'ouvrant entrebâillé lorsque celui-ci est susceptible de pivoter, librement, par rapport au dormant ;
• la figure 9 est une vue analogue à la figure 6, illustrant la position prise par la poignée dans les situations représentées dans les figures 7 et 8 ;
• la figure 10 est une vue en coupe selon X-X de la figure 8.

The invention will be better understood on reading the description which follows, accompanied by the drawings relating to an embodiment given by way of example.

• Figure 1 shows a schematic perspective view of a window fitted with a locking fitting according to the invention;
• 2 shows a schematic view of this locking fitting fitted to an opening as shown in Figure 1;
• Figure 3 is a schematic representation of the device for keeping the opening ajar relative to the frame;
• Figure 4 is a schematic perspective and exploded view of the device as shown in Figure 3, the position taken by the elements being that corresponding to the opening ajar;
• Figure 5 is an elevational representation of the configuration taken by the elements of the device as shown in Figure 4 when the opening is ajar;
• FIG. 6 illustrates a control element, in the form of a handle in a position which can correspond to the situations illustrated in FIGS. 4 and 6;
• Figure 7 is a view similar to Figure 4, the elements being shown in a position corresponding to the free rotation of the opening relative to the frame;
• Figure 8 is a view similar to Figure 5 showing the arrangement of the various elements making up the device able to keep the opening ajar when it is likely to pivot, freely, relative to the frame;
• Figure 9 is a view similar to Figure 6, illustrating the position taken by the handle in the situations shown in Figures 7 and 8;
• FIG. 10 is a sectional view along XX of FIG. 8.

The present invention relates to a locking fitting 1 visible in FIG. 2 which, inter alia, makes it possible to maintain in a ajar position 2 the opening 3 corresponding, as shown in FIG. 1, to a window, French window , door or the like 4.

In this regard, it has been represented in FIG. 1, a window whose opening 3 is pivotally mounted, about a vertical axis of rotation 5, on a frame 6. However, the present invention is in no way limited to such an opening mode which, when the opening 3 pivots towards the interior of the dwelling is usually defined as a French opening. More particularly, the locking fitting 1 is also applicable to openings pivotally mounted about a horizontal axis of rotation on the frame, of the Italian-opening type.

Thus, this locking fitting 1, in accordance with the invention, comprises a locking mechanism 7 of the lever type, an embodiment of which is illustrated in FIG. 2. More precisely, this locking mechanism 7 comprises at least one operating rod 8, 8A; 9, 9A extending at least partially into the rebate 10 of the opening 3. The movement of these operating rods 8, 8A; 9, 9A is obtained by means of a drive mechanism 11 actuated by a control element 12 of the handle, button, key cylinder type, etc.

As shown in Figures 1 and 2, this control element 12, more particularly illustrated in the form of a handle, can be mounted on the front upright 13 of the opening 3 so as to cooperate with one or more operating rods 8, 9 extending in rebate, upwards or downwards along this front upright 13 so as to intervene, for example, on one or more locking members 14, of the roller type or the like, capable of cooperating with keepers 15 arranged in concordance on the frame 6. Note that if the drive mechanism 11 intervenes on several operating rods 8, 9, these can move simultaneously in the same direction or in opposite directions . In addition, at the upper end 16 and / or lower 17 of the opening 3, this or these operating rods 8; 9 can transmit their movement, through an appropriate bevel gear 18, 19, to sections of operating rod 8A; 9A, extending along the upper 20 and lower 21 crosspieces.

Reference is now made to all of the figures in the attached drawings.

According to the invention, this locking fitting 1 comprises a device 1A for keeping the opening leaf 3 ajar relative to the frame 6. In fact, such a device 1A is intended to cooperate with one of said operating rods, 8, 8A ; 9, 9A. In this regard, in the context of the embodiment illustrated in the figures and which will now be described, there is talk of cooperation of this device 1A with one of the operating rods 8A; 9A extending along the upper 20 and lower 21 crosspieces of the opening 3. It is noted, very particularly that in this embodiment illustrated in the figures, the locking fitting 1 comprises two devices 1A cooperating with each of the operating rods 8A; 9A being located, precisely, at the level of these upper 20 and lower 21 crosspieces of the opening 3. It is obvious that the present invention is in no way limited to such a design and it could perfectly be envisaged to implant a device 1A at the level of the front upright 13 of this opening 3 in cooperation with the front upright 22 of the frame 6, if it was a pivoting opening or the Italian for example.

In addition, in order to facilitate the understanding of this description, reference is made, in the following lines, to a device 1A intervening between the upper cross member 20 of the leaf 3 and the upper cross member 24 of the frame 6 knowing that, whatever its location and as will emerge from the description below, this device 1A can keep the same configuration, including for right or left use on a window with French opening in general for all types non-sliding sash.

Thus, this device 1A comprises, according to the invention and as shown in Figures 3 to 10, a support 23 fixedly mounted on the frame 6, in this case in rabbet on the upper crosspiece 24 of the latter. On this fixed support 23 is articulated one of the ends of a compass arm 26, the opposite end 27 of which is fitted with hooking means 28 which, as visible in the various figures 4, 7, 8 and 10 can take the form of a circular stud 29, of axial T-shaped section. Note, however, that other embodiments can be envisaged in accordance with the function which these hooking means 28 must perform. In this regard, these must be able to slide inside a keeper 30 associated with a support 31 mounted integral in displacement of an operating rod, in this case, 8A, placed on the opening 3. In fact, the keeper 30 has a T-shaped groove 30A in which the stud 29 can move.

In the end, it is this mobility of the attachment means 28 inside the keeper 30, on the one hand, and the length of the compass arm 26, on the other hand, without taking into account the positioning of the device 1A relative to the pivot axis 5 of the opening 3 which determines the amplitude of the mobility of the latter relative to the frame 6 in the ajar position.

In this regard, it should be noted that this device 1A can advantageously serve to limit the opening angle of the opening 3 relative to the frame 6. In fact, it can be seen that the closer we get this device 1A of the pivot axis 5 of the leaf 3 and the more the length of the compass arm 26 is increased, the more this leaf 3 can pivot by a large angle of rotation relative to the frame 6. In particular, it is , for example, possible to limit this angle of rotation to 90 ° this so as to avoid that the opening 3 cannot be supported on a possible lateral spine corresponding to the frame and which could, otherwise, serve as a lever arm to this opening 3 for a forced action on the articulation fittings which connect it to the frame 6.

It is advantageous to note that the locking fitting 1 can be equipped with two devices 1A, one of which intervenes, effectively, as a means allowing the door to be kept in a slightly ajar position, while the other, placed more near the pivot axis of the opening 3, limits the rotation of the latter when the first of these devices 1A is released.

The operation of such a locking fitting, thus equipped with two devices 1A will appear further in the description.

Figures 4 and 5 illustrate, on the one hand, in perspective and exploded, and, on the other hand, in the form of a representation in elevation the arrangement made by the different elements composing the device 1A, precisely when the opening 3 is brought into such a ajar position. These Figures 4 and 5, as well as Figures 7 and 8 illustrate, also, an embodiment of the means 32 allowing the connection of the support 31 at the end of an operating rod 8A, knowing, in this regard, that this support 31 can also be inserted in a longer operating rod 8A. Under these conditions, it is equipped with connection means 32, 32A at each of its ends 33, 34.

According to the invention, the hooking means 28 equipping the end 27 of the compass arm 26 are able to disengage from said keeper 30 following a displacement consequently communicated to the support 31 by the operating rod 8A to which it is connected.

Thus, this keeper 30 comprises, at one of its ends 35, an opening 36 authorizing the engagement and release through the latter, of the stud 29 constituting the hooking means 28 in the T-groove 30A.

In fact, the locking mechanism 7, fitted to the window or the like 4, must be designed so that it is possible, once the opening 3 unlocked, to confer on the element 12, therefore on the operating rod 8A , at least two positions, one of which activates the device 1A to authorize only a cracking of this opening 3 and the other of which generates free rotation or a rotation of greater amplitude of this opening 3 by relative to the frame 6, this, for example, to allow cleaning of the exterior glazed surface of a window.

Consequently, in one of these positions given to the control element 12, this must result in the release of the attachment means 28 relative to the keeper 30 and, in the other position, the engagement of these attachment means 28 in said keeper 30.

Thus, if we take the case of a control element 12 in the form of a handle, we observe that this handle, when it is lowered, as shown in Figure 2, generates the locking of the opening 3. While, brought back into a horizontal position, as illustrated in FIG. 6, the hooking means 28 are, as in the case of locking, kept engaged in the keeper 30 corresponding to the device 1A n ' authorizing a limited opening of the opening 3. By continuing the movement communicated to this handle so as to bring it back into a raised position as illustrated in FIG. 9, this may result in sufficient displacement of the operating rod 8A to obtain the release of the attachment means 28 of said keeper 30 through its opening 36, allowing, finally, the free rotation of the opening 3 relative to the frame 6.

Assuming, however, that the locking fitting 1 comprises two devices 1A, one of which is disposed closer than the other to the pivot axis 5 of the leaf 3, it can be provided that, during 'A first rotation of the handle 12, one simply obtains the unlocking allowing the first of these devices 1A to play its role of maintaining the opening 3 in a partially open position. During a complementary rotation, the attachment means 28 corresponding to this first device 1A are able to release from the keeper 30, making, finally, this first device 1A inactive. However, the second device 1A, placed closer to the pivot axis 5 of the opening 3 may itself remain active. Thus, the opening 3 is able to open wide, while its rotation relative to the frame 6 remains limited. One can, then, imagine that a last rotation of the handle 12 is possible which leads to the release of the hooking means 28 relative to the keeper 30 of this second device 1A so that the angle of rotation of the opening 3 relative to the frame 6 is no longer limited by the locking fitting 1, object of the invention.

In view of the above description, it can be seen that, through the locking fitting 1, in accordance with the invention, it is possible to keep a leaf ajar, in particular, in the French style, without there being any risk for the occupants, the total opening of this opening being obtained only under the effect of a voluntary and complementary action of the user on the control element 12.

Note that the device 1 can receive, at the height of the fixed support 23, for example, retaining means 37, shown in the form of an elastic clamp in the attached drawings, capable of holding the compass arm 26 in a position parallel to this fixed support 23 during a command for complete opening of the opening 3. In fact, these retaining means 37 prevent, when the device 1A is deactivated, that the compass arm 26 does not pivot, freely in the direction of the opening 3 and, if necessary, opposes the closing of the latter.

Said retaining means 37, in the form of an elastic clamp, are illustrated in detail in FIG. 10. Thus, they can be either fixed on the fixed support 23 or attached with the latter to the frame 6.

As it clearly appears in FIG. 2, the device 1 retains the same configuration, whether it is located at the level of the upper crosspieces 20, 24, respectively, of the leaf 3 and of the frame 6 or at the level of their lower crosspiece . In this same figure 2 it is also visible that it suffices to turn this device 1 in one direction or the other depending on whether the operating rod or rods 8, 8A; 9, 9A move in one direction or another or that the opening opens to the left or to the right. In addition, this explains why the present invention can find its application in any type of non-sliding door. It is obvious that from the point of view of the management of the manufacture and of the storage of these locking fittings, in accordance with the invention, this standardization is of considerable interest.

Claims (8)

Locking fitting for window, French window, door or the like (4), comprising a locking mechanism (7), of the lever type comprising at least one operating rod (8, 8A; 9, 9A) extending over the at least one rebate part (10) of the opening (3) and controlled in displacement by a drive mechanism (11) actuated by a control element (12) of the handle, key cylinder or the like type, characterized by the fact that it comprises at least one device (1A) for holding the opening (3) of said window or the like (4) in a partially open position, this device (1A) being defined by a support (23) fixed on the frame (6) and on which is articulated one (25) of the ends of a compass arm (26), the opposite end (27) of which is fitted with hooking means (28), such as a stud (29) or a roller capable of sliding inside a keeper (30) associated with a support (31) mounted integral in displacement an operating rod (8A; 9A) placed on the opening (3), this to limit the pivoting angle of the latter relative to the frame (6), said attachment means (28) being able to disengage from said keeper (30) following a corresponding displacement of said operating rod (8A; 9A) under the impulse of the control element (12) acting on the drive mechanism (11), this for a larger opening of the opening (3). Lock fitting according to claim 1, characterized in that the hooking means (28) are in the form of a circular stud (29), of axial section in the shape of a "T". Locking fitting according to claims 1 and 2, characterized in that the keeper (30) has, on the one hand, a T-slot (30A) in which the stud (29) and, on the other hand, an opening (36), at one of its ends (35), allowing the engagement and disengagement of the stud (29) in the T-groove (30A) of the keeper (30). Lock fitting according to any one of the preceding claims, characterized in that the support (31) comprises, at least at one of its ends (33, 34), connection means (32, 32A) allowing its connection with an operating rod (8A; 9A). Lock fitting according to any one of claims 1 to 4, characterized in that the support (31) comprises, at each of its ends (33, 34), connection means (32, 32A) allowing it to s '' insert in an operating rod (8A; 9A). Lock fitting according to any one of the preceding claims, characterized in that the device 1A comprises retaining means (37) capable of holding the compass arm (26) in a position parallel to the fixed support (23) when the hooking means (28) are released from the keeper (30). Locking fitting according to any one of the preceding claims, characterized in that the locking mechanism (7) is designed so that it is possible, once the door is unlocked, to give the control element ( 12) and, therefore, at the operating rod or rods (8, 8A; 9, 9A) at least two positions, one of which activates the device (1A) so as to allow only one opening of the opening (3 ) and the other of which generates the release of the hooking means (28) relative to the keeper (30) of this device (1A) for a greater rotation of the opening (3) relative to the frame (6). Locking fitting according to any one of the preceding claims, characterized in that it comprises two devices (1A), the first of which, when activated, ensures that the leaf (3) is held in a position ajar by relative to the frame (6) and the second of which is disposed closer to the pivot axis (5) of this opening (3) allowing a larger opening, while limiting it, of the opening (3) relative to the standing (6) once the first of these devices (1A) deactivated, corresponding to the release of its attachment means (28) relative to the corresponding keeper (30).

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