WO2007009993A2

WO2007009993A2 - Safety frame for doors and windows

Info

Publication number: WO2007009993A2
Application number: PCT/EP2006/064375
Authority: WO
Inventors: Claudio Ranzato
Original assignee: New Art System S.R.L.
Priority date: 2005-07-20
Filing date: 2006-07-18
Publication date: 2007-01-25
Also published as: PT1910635E; DE602006020579D1; WO2007009993A3; ITMI20051386A1; EP1910635A2; SI1910635T1; EP1910635B1; ES2362536T3; ATE501327T1

Abstract

Window or door including: at least a first and second wing (1, 2, 1', 2') each hinged along one of its axes of rotation (3, 4, 3', 43) and such as to permit reciprocal alignment in a plane; said first wing (1, 1') comprising a latch type locking device having a bolt (12, 12', 13) fixed so as to slide along one edge (10) of said first wing, outside this, and designed to engage one end (31 ) in a fixed structure (5, 6, 7) to prevent movement of the first wing in relation to said fixed structure, said bolt being able to engage a corresponding profile of one edge (11) of the second wing (2, 2') when the wings are aligned so as to prevent reciprocal translation of the wings in a direction perpendicular to the plane of alignment.

Description

Safety frame for doors and windows

DESCRIPTION FIELD OF THE INVENTION

The present invention refers to a window or door with at least two wings, in particular a metal safety door or window, in particular with a latch type device. PRIOR ART

In the field of doors and windows, in particular of metal safety doors and windows, latch type closing devices are generally used that, in particular in the case of windows or doors with two wings, have the advantage of providing fastening points, with the frame closed, above and below the wings, in a position at a distance from the hinges. In the case of windows or doors with two wings, one wing usually has the lock and the latch mechanism while the opposite wing remains closed suitably, engaging the first insofar as the two wings have complementary profiles along the closing edge, for example concave on one wing and convex on the other, or are locked in position by specific elements or retainers.

The wings of metal windows or doors usually have a peripheral framework with tubular structure and the lock and bolts of the latch mechanism are housed inside the tubular structure on one side of said framework of the first wing and the ends protrude from holes made above and below in said framework, engaging in holes made in the frame of the part fastened to the door or to the window, or directly in the holes. Construction of a window or door of this type is rather complex as it is necessary to operate inside the tubular structure of a wing. Also, the profiles of the two wings that come into contact are different, thereby requiring use of different tubular sections for the various sides of the frame that forms each wing, or application on a wing of elements such as strips in order to retain the second wing and cover the gap between the two wings so that it is inaccessible to break-in tools and to protect the bolt of the lock, if any, which connects the two wings with the lock closed. Another problem, especially in the case of thick windows or doors such as those of the safety type, if the faces of the profiles of the two wings, faces that must be closed on each other, are not complementary and/or are, as often happens, flat, the play between said faces, with the window or door closed, must be considerable in order to permit opening and closing of the window or door without hindrance. This facilitates lifting off the hinges, using a tool to exert leverage on the side on a wing, starting from the jamb and pushing towards the other. If more than two wings are present, the play is accumulated with a consequent further worsening of the problem.

There is therefore a need for a door or window that offers good guarantees against attempts to break in, even while simplifying construction. SUMMARY OF THE INVENTION The problems described above have now been solved with a window or door comprising: at least two wings each hinged along one of its axes of rotation and such as to permit reciprocal alignment in a plane said first wing comprising a latch type locking device having a bolt fastened so as to slide along the edge of said first wing and designed to engage one end into a fixed structure in order to prevent movement of the first wing in relation to said fixed structure, said bolt designed to engage a corresponding profile of a edge of the second wing, when the wings are aligned, so as to oppose reciprocal translation of the wings in a direction perpendicular to the plane of alignment. Preferably, two bolts are present, arranged along the same edge, which, sliding in opposite directions, are designed to engage the fixed structure at the opposite ends of the edge of the first wing.

According to a preferred embodiment, the wings are both hinged to a fixed structure, for example along sides opposite and parallel to said edges; in this case, when the bolt engages in the fixed structure and the wings are aligned, it also prevents rotation of the second wing around its axis of rotation. According to a different embodiment, the wings are reciprocally hinged by one side corresponding to the axis of rotation. In this case, the second wing should preferably have means able to cause sliding of the bolt so that it engages in the fixed structure. LIST OF FIGURES

The present invention will now be described with a detailed description of preferred but not exclusive forms of embodiment provided for example purposes, with the aid of the attached figures where: Figure 1 is a schematic representation a of a plan view in cross-section of a window or door according to the present invention.

Figure 2 is a schematic representation of a plan view in cross-section of a window or door according to another embodiment of the present invention.

Figures 3 and 4 are schematic representations of plan views according to two different cross-sections of a detail of the two wings of a window or door according to the present invention.

Figures 5a, 5b, 5c are schematic representations respectively of a lock and two orthogonal views of the ends, connected to the lock of a bolt.

Figures 6a, 6b, 6c are schematic representations of three orthogonal views in cross-section of a detail of the end of a bolt, designed to engage a fixed structure, of a window or door according to a particular embodiment of the invention, the first two being exploded views, the third assembled.

Figures 7a, 7b, 7c are schematic representations of three orthogonal views in cross-section of a detail of the end of a bolt fastened to a first wing and a pusher element fastened to a second wing, designed to interact in order to lock the wing during closing, in a window or door according to a particular embodiment of the invention, the first two being exploded views, the third assembled.

Figure 7d is a schematic representation of a detail of the bolt of figures 7a, 7b and

7c, and of the pusher element while they interact. DETAILED DESCRIPTION OF AN EMBODIMENT

Figure 1 shows a plan view of a window or door according to the present invention in cross-section according to a horizontal plane that intersects the wings above a lock, in correspondence of a bolt of a latch mechanism. The first 1 and the second

2 wing are visible, hinged respectively about axes 3 and 4 and capable of rotating in the direction of the arrows A. The wings may be hinged to a frame 5, fixed for example in an opening 6 for window or door in a wall 7, or also hinged directly to the walls of said opening. According to a possible embodiment, the wings have a peripheral framework of tubular sections 8, and 9 and when they are closed, as shown in figure 1 , they reciprocally face along the edges 10 and 1 1. Figure 3 is an enlargement of this detail showing a cross-section of the bolt 12, suitably fastened to the edge 10 and sliding perpendicularly to the plane of the sheet so that one end thereof is inserted in a hole or engages with a retainer, integral with a fixed structure that may be the frame 5 or the wall 7; the bolt moves towards the observer, i.e. upwards, to lock the wing. Preferably, as is usual and not visible in the figures, another bolt aligned with the first is present that, with an opposite movement (downwards), engages in a hole or retainer on the fixed structure from the opposite side. The movement of the bolts can be imposed by a lock, suitably fastened to the first wing 1. Figure 4 is a schematic representation of a cross- section in a plane parallel to that of figure 3, but at the position of the lock 18. As usually happens, the body 14 of the lock can be housed inside of the tubular section 8 of the first wing 1. The lock may have a front plate 15 by means of which it can be fastened to the tubular section 8, or other kinds of fasteners may be used, as usual. Figure 5a shows the lock connected to the ends 16 and 17 of the bolts 12 and 13 by mobile elements 19 and 20,which move with the usual locking/unlocking operations, for example by key, of the lock, which is preferably is a safety lock; the lock does not require further description as it is of a known type. The profile of the edge 1 1 of the second wing 2, facing towards the corresponding edge 10 of the first wing 1 , is such as to engage the side surface of the bolt 12 (see figure 3). According to a preferred embodiment, the edge has a concave profile and that of the side wall of the bolt is convex, as in figure 3. Thus, when the bolt engages the fixed structure, it prevents opening of the second wing 2; in fact, the margins 21 and 22 interfere with the bolt. Referring to figure 1 , it can be noted that the system is also adapted, in cooperation with the hinges, to prevent translation movement (arrows B) of the wing in the direction normal with respect to the plane of closure of the window or door, movement that could be caused by an attempt to smash the window or door. Preferably, the profile of the edge 10 of the first wing 1 is the same as that of the edge 1 1 , has margins 23 and 24, and is arranged specularly to it (always considering the wings closed) and engages in a similar manner with the bolt. When the bolt is not engaged in the fixed structure (lock open), it permits concurrent opening of the wings (arrows A), remaining attached to the wing 1 to which it is fastened, both by the lock, and preferably at at least another point as will be seen below. The fact that the wing 1 can also be engaged by the bolt similarly to the wing 2, means that resistance to opening or smashing is afforded by the interaction of the margins for the entire length of the bolt, and no particular resistance of the fastening points of the bolt to the wing or to the lock is required, as is the case for known kinds of external bolts (for example the wings of wardrobes). Also, the bolt occupies the gap between the margins of the two wings, preventing insertion of break-in tools. The front plate 15 of the lock may also have a convex profile corresponding to that of the edge 1 1 of the second wing. This reduces the need to taper the ends 16 and 17 of the bolts and reduces the possibility of inserting break-in tools, also in absence of specific means, such as front metal strips welded to one of the wings, to cover the gap between the two wings in the concerned length. The profiles of the edges of the wings are preferably concave, the bolt having a corresponding convex side surface. Preferably the bolt has a rounded section, for example circular or elliptical, circular section being preferred. Its dimensions, in particular its diameter if the section is circular, will preferably be such as to permit locking of the wings in the manner described. For example, the diameter can be at least half of the thickness of the window or door at the position of edges 10 and 1 1. Preferably, the bolt is of tubular section for at least part of its length. The ends 16 and 17 of the bolt(s), designed to be connected to the lock can be suitably tapered and have slots 25 for fastening with screws or hooks, as can be seen in figures 5a, 5b and 5c. This can be obtained using a suitably flattened and cut tubular profile or in another way.

As said, the bolt is preferably of tubular section and is fastened in a sliding manner to edge 10 at at least one other point in addition to the end connected to the lock. Figures 6a, 6b, 6c show the end of the bolt, opposite to that connected to the lock. The connection system is also visible: the bolt has a longitudinal slot 26, facing towards the edge 10 of the wing; a screw 27, passing through the slot, is suitably screwed into a hole made in said edge 10, preferably a threaded hole, and the head 30 of the screw holds the bolt against the edge, while allowing it to slide for the stroke corresponding to that of the stem of the screw within the slot. The slit 29, made in the bolt from the opposite side of the slot, allows the screw to pass through and permits access to it, for assembly and removal. The end of the bolt opposite to that connected to the lock, is designed to engage the fixed structure, to lock the window or door. The bolt can terminate with an end that protrudes above or below from the edge of the wing, for a variable length depending on whether the lock is locked or not. Otherwise, it may have a point 31 , designed to engage the fixed structure, for example such as to permit introduction into a hole of said structure. The point can slide with respect to the bolt for a certain length, and may be fitted with flexible means able to push it in the direction of the fixed structure, i.e. away form the rest of the bolt. Other means maintain it suitably attached to the bolt. For example, a closed-end sleeve 33 can be inserted partially in the tubular body of the bolt (fig. 6c) and made integral with it in a suitable manner, for example by punching (a number of sites 34 where the punch acts are indicated). With the closed end, it retains a spring 35 pushing the point 31 , inserted in the protruding part of the sleeve, towards the outside. An adjustment screw inserted in the through hole 36 and with its head housed in the housing 37, is bolted into the threaded hole 38, provided in the closed end 39 of the sleeve. Thus, the screw retains the point 31. By tightening or loosening the screw, the protrusion of the point is regulated. A dowel, screwed into the threaded hole 40, can lock the adjustment screw in the desired position. The slit 41 in the wall of the bolt permits access to the dowel. The point has, therefore, the possibility of performing a small stroke with respect to the bolt, by overcoming the force of the spring. Regulation is preferably such that, with the lock released, the point 31 engages in the fixed structure, for example penetrating into the hole made in said structure only for a small section of its final rounded end 32. Thus, the bolt holds the wing in the closure position if desired, but by simply acting on the wing, the point is pressed against the bolt and it is possible to disengage it from the fixed structure, with a snap type mechanism. When the lock is blocked, the bolt pushes the point in, so as to engage its cylindrical part 42. It is thus no longer possible to move the wing. Preferably, the point is free to turn around sleeve 3; is in fact the part that crosses the gap between the wing and the fixed structure, when the window or door is locked. Thus, it is difficult to cut it by introducing a saw into said gap. Other systems for engaging the bolt may be devised. The slit 60 shown in the figures is intended only to permit drainage of liquids after stove-enameling of the parts. For convenience, the position of the slots is marked with a dotted line in figures 6b and 6c, where the slots are not shown as they are beyond the plane of section.

As said above, the first and second wing may be hinged together,. This happens, for example, in articulated windows or doors with two or more wings, as in the example shown in figure 2; the first wing 1 ' is hinged to the fixed structure in 3', and the second wing 2' is hinged to the first by means of hinges or other means 43. Wing 2' may have a lock on the opposite side, or there may be a further wing hinged to the fixed structure, further wing that with wing 2' forms a system of closing like that described above. Wing 1 ' must be locked when the window or door is closed. The bolt 13 can be slidingly fastened to it , in the same way described above; in this case, however the bolt 13' can be not connected to a lock, but may be such that specific means, fitted on the wing 2', causes its sliding in the locked position. Figures 7a, 7b, 7c and 7d show such a mechanism. The bolt 13', is now shown from the end opposite to that suited to engage the fixed structure, which can happen similarly to what already described in the previous case. The screw 27' serves to keep the bolt fastened to the first wing as already seen, through the slot 26'. The screw 27' may be the only fastening element of the bolt, or there may be two, each with its own slot, if appropriate. A mechanism returns the bolt to the unlock position, unless said means of the second wing 2' act thereon. The mechanism can be a spring mechanism, as described below. A block 45, with a cross-section corresponding to the internal cross-section of the tubular bolt (preferably cylindrical), is inserted from the end concerned, slides inside of the bolt and rests against a specific retainer that may advantageously be the head of the screw 27' itself. The spring 46 rests on it and can in turn can push the terminal element 47, partially inserted inside the end of the bolt and made integral with it by punching. Said terminal element has preferably an oblique terminal surface 48, preferably cut substantially at 45°. Said surface faces towards the opposite side with respect to the wing to which the bolt is fastened; it is preferably convex, for example it may be a portion of cylindrical surface, whose the generatrix 51 is arranged obliquely with respect to the axis of the bolt, and centrally. On the second wing, there is the pusher element 49 that can be fastened to it in a suitable manner, for example by means of a screw inserted into the hole 50. Also the element has an oblique terminal surface 52 similar to the surface 49, facing towards the opposite side with respect to the wing 2', whereto the pusher element is fastened. The element is fastened so that the surface 52 is at the height where the surface 49 must be located when the bolt is in the locked position. Aligning the wings as in figure 2 the two surfaces are pressed one against the other, up to the condition shown in figure 7d. Thus, the pusher element of the second wing pushes the bolt (in the direction of arrows C) to the locking position. The spring forces its return, when the second wing is opened again. If two opposed bolts are present, as commonly happens, there may be two pusher elements on the second wing, or there may be only one pusher element, provided with two opposite oblique surfaces, acting on both the bolts: in this way, it is also easy to eliminate any gap between two wings with window or door closed.

In the case of articulated windows or doors, the bolt should preferably be fastened to the wing that remains fixed during opening of the second wing, which, of two wings, may be the one also directly hinged to a fixed structure, or, in a set of several wings, the one closest to the one hinged to the fixed structure, so that the position of the bolts is fixed during closing of the second wing. If bolt has a point as described above, this also permits temporary retention of the first wing, leaving the second free. Nevertheless, it is also possible, by some expedients (such as dimensioning of the holes for the bolts in the fixed structure), to implement the contrary solution if desired. In figure 7b, the position of the slits is marked with a dotted line similarly to figures 6b and 6c. According to a particular embodiment of the invention, the slits may be the same as shown above, so as to use the same die for the two ends of the bolt, even though not all would be necessary. An advantage of the window or door according to the present invention is, as said, an easy assembly of the bolt, without weakening of the anchor points. The window or door has good resistance to smashing and does not have sites where saws or break-in tools could be easily inserted. Moreover, the complementary profiles of the wings and of the bolts considerably reduce the gap between two adjacent wings, which reduces the possibility of unhinging by acting from one side of the window or door. Finally, the tubular profiles of the edges of the two wings are the same. Therefore, it is also possible to use the same tubular section for the whole framework of each wing of the entire window or door, also reducing or eliminating the need to weld plates or safety elements to hide delicate, otherwise accessible parts.

The window or door can be a metal window or door or of another kind, and, according to a particular embodiment of the invention, can have a framework of tubular sections whereto a grill or bars are fixed.

Claims

1 . Window or door comprising: at least a first and a second wing (1 , 2, 1 ', 2') each hinged along one of its axes (3, 4, 3', 43) of rotation and such as to permit reciprocal alignment in a plane; said first wing (1 , 1 ') comprising a latching locking device having a bolt (12, 12', 13) fixed so as to slide along one edge (10) of said first wing, outside of it, and designed to engage one end (31 ) in a fixed structure (5, 6, 7) to prevent movement of the first wing in relation to said fixed structure, said bolt being designed to engage a corresponding profile of one edge (1 1 ) of the second wing (2, 2') when the wings are aligned, so as to oppose reciprocal translation of the wings in a direction perpendicular to the plane of alignment.

2. Window or door according to claim 1 , characterized by the fact of comprising two bolts (12, 13) arranged along the same edge (10) of the first wing which, sliding in opposite directions, are designed to engage the fixed structure at the opposite ends of the edge.

3. Window or door according to claim 1 or 2, characterized by the fact that the wings are both hinged to a fixed structure.

4. Window or door according to claim 3, characterized by the fact that when the bolt is engaged with the fixed structure and the wings are aligned, it prevents also the rotation of the second wing around its own axis of rotation.

5. Window or door according to claim 3 or 4, characterized by the fact that said first wing (1 ) includes a lock (18), designed to move the bolt(s).

6. Window or door according to claim 1 or 2, characterized by the fact that the wings are reciprocally hinged by a side corresponding to the axis of rotation.

7. Window or door according to claim 6, characterized by the fact that the second wing has means (49) designed to cause sliding of the bolt to engage it into the fixed structure.

8. Window or door according to claim 7, characterized by the fact that the bolt has means (45, 46, 47) designed to return it to the unlock position when the action of said means designed to cause sliding ceases.

9. Window or door according to claim 7 or 8, characterized by the fact that said means designed to cause sliding of the bolt and one end of said bolt have oblique surfaces (48, 52) designed to reciprocally engage.

10. Window or door according to claim 8, characterized by the fact that said means (45, 46, 47) designed to return the bolt to the unlock position include a spring (45).

1 1. Window or door according to any previous claim, characterized by the fact that said edge of the second wing has a concave profile.

12. Window or door according to any previous claim, characterized by the fact that said edge of the first wing is the same and arranged specularly (with closed window or door) to that of the second wing, at least in correspondence of the bolt.

13. Window or door according to any previous claim, characterized by the fact that said bolt has a circular cross-section.

14. Window or door according to any previous claim, characterized by the fact that said bolt has a tubular profile, at least for part of its length.

15. Window or door according to claim 14, characterized by the fact that the bolt is fastened to said first wing by a screw (27, 27') that passes through a longitudinal slot (26, 26') and having a head (30) inside said bolt, bolted in said first wing.

16. Window or door according to any previous claim, characterized by the fact that said bolt has a point (31 ) having:

- a rounded part (32) designed to engage said fixed structure when the bolt is in the unlock position; said part can be disengaged overcoming the resistance of a spring (35), only acting on the wing

- a cylindrical part (42) designed to engage said fixed structure when the bolt is in the locked position.

17. Window or door according to claim 16, characterized by the fact that said point (31 ) is free to rotate on itself.