EP4085177B1 - Bearing system for a door - Google Patents

Description

technical field

The invention relates to a storage system for a door according to the preamble of patent claim 1.

The usual bearing system, according to which the hinges are located entirely outside both the door leaf and the frame which serves as the frame for the leaf, has long been well known and is still in use. As a result of this external location, the hinges are always in sight, i.e. they are visible both when the door is open and when the door is closed.

Recently, a storage system was developed, thanks to which the hinges are only visible when the door is open, while they are hidden from view when the door is closed, ie most of the time.

State of the art

According to this storage system, each hinge, by which is meant a mechanism that connects the sash and the frame and is suitable for pivoting the sash with respect to the frame, both in a respective cavity provided in one of the uprights of the frame and in a respective associated cavity provided in the wing.

When the door is closed, the openings of the two cavities in which a hinge is placed are placed one against the other, which means that the hinge located inside is no longer visible, whereas the two cavities open during the opening of the door apart to reveal the hinge.

During the opening or the closing of the door, the distance between the two different cavities in which a hinge changes is arranged, whereby the distance between the arranged in the cavity of the sash components of the hinge and those components of the hinge, which, however, are arranged in the cavity of the frame changes. This circumstance makes it necessary to provide several pivoting components for each hinge and also a plurality of different pivoting axes, with a different pivoting component pivoting about each of the pivoting axes. Because of this plurality of pivot axes, the pivot axis of the wing moves during opening or closing of the door, whereby the wing does not perform a pivoting movement, but a combination of pivoting and translational movement. It is therefore a complicated storage system which, in order to reduce play to a minimum, requires very precise and expensive machining both on the constituent parts of the hinges and on the cavities in which the hinges are housed, and which entails the additional workload that you also have to create the cavities in the wing. EP 1 223 280 A2 discloses an example of a storage system.

Presentation of the invention

Proceeding from this context, the object on which the present invention is based is to further develop a storage system of the type initially specified, so that it can be produced in a more uncomplicated, inexpensive and simple manner, but at the same time its operational reliability is not reduced.

This object is achieved according to the invention if a bearing system for a door which has the features specified in the preamble of patent claim 1 also has the features specified in the characterizing part of patent claim 1 .

The fact that each hinge is placed only in a single respective cavity in the jamb and not in two cavities, one in the jamb and the other in the leaf, makes it possible to simplify the mutual movements made by the components of the hinge during opening or closing of the door, since a single pivoting component suffices for each hinge, eliminating the need to provide several different pivot axes for the various pivoting components. In addition, the pivoting axis of the wing and the pivoting axis of the pivoting component of each hinge of the bearing system coincide, whereby the wing performs a pure pivoting movement during opening or closing of the door and in particular an opening pivoting movement of the wing up to 180° is possible.

Another important aspect is that the opening of the cavity in which a hinge is located is mostly covered by the pivoting part of the hinge, which has a cover section for this purpose. The shape and dimensions of the cover portion are such that when the door is closed, i.e. when the pivoting component of the hinge is also in its closed position, the cover portion largely covers the opening of the cavity in which the hinge is located. To achieve this, it suffices, for example, that the shape of the cover portion and the shape of the opening of the cavity are the same and that its dimensions are smaller than those of the opening of the cavity but large enough for the opening to be almost completely closed. In such a case, the cover section can be positioned within the cavity, since the dimensions of the cover section are smaller than those of the opening, so that when the door is closed, the outer surface of the cover section and the outer surfaces of the jamb and sash are coplanar and a pleasing appearance is achieved.

The component group of the hinge claimed in claim 2 and formed by the pair of connecting bodies and the pivoting component described therein characterizes the structural Structure of the simplest embodiment of the hinge of those that are the subject of the present invention, according to which the pin-shaped portions of the connecting bodies are inserted directly into the seats, possibly with the use of a lubricant. In this way, each peg-shaped section lies with its surface directly on a surface, for example on the floor, of the seat in which it is inserted.

The group of components claimed in claim 3 makes it possible to improve the structural structure of the above-mentioned hinge. In fact, the fact that the seats are formed as through holes and that in addition a support body and a support bushing, such as those claimed and which could be made of plastic, for example, makes it possible to reduce friction and eliminate maintenance caused by lubrication , but in particular it makes it possible to simplify manufacture: the pivoting component is now symmetrical and can therefore be used both for the wings fitted on the right-hand jamb of the frame and for the wings fitted on the left-hand jamb. If then, according to claim 4, the supporting body has a concave frusto-conical bearing surface and the supporting bush has a convex frusto-conical bearing surface, it is possible to produce a very strong hinge that is able to withstand a particularly heavy wing, e.g. the weight of the wing of a fire door , safe to keep. This is because the coupling surface between the supporting body and the supporting bush is larger compared to other possible bearing surfaces with the same diameter, as a result of which there is less surface pressure and better coupling.

The additional components of the hinge claimed in claim 5, the elastic element, the stressing device and the catch described therein, make it possible to obtain a hinge capable of closing the door automatically, thereby There is no need to provide a door closer for this purpose. Such an automatic closing function can also be added to the supporting function, so that - if in addition to the supporting body and the supporting bush one also provides the elastic element, the stressing device and a lock (see claim 5 when it depends on claim 3 or 4 ) - a load-bearing self-closing hinge receives, ie a hinge that combines both the load-bearing function and the automatic closing function. Referring to the elastic element, this can be eg a torsion spring (claim 6) or a torsion bar (claim 7). In both cases, in order to hold one end of the elastic element and to load it, it is envisaged that the bottom of the longitudinal hole in which one end of the elastic element is inserted has a slit and that this end of the elastic element tapers to form a beak to form which in turn is inserted into the slot. Such a solution is inexpensive, very reliable and easy to manufacture.

In order to reduce friction and to increase the life of the hinge and increase the length of time between one service and the next, it is expedient to provide the guide bushing as claimed in claim 8. In addition, if, as claimed in claim 9, both the connecting body and the peg-shaped section and the supporting body and the supporting bush each have a longitudinal through hole, a through-path is formed to guide an electric feed cable for an electric door lock through the hinge, wherein on thus avoiding the expensive sheathed cable transit systems and unsafe electrical contacts currently used.

The assembly of hinge components claimed in claim 10 and consisting of the pair of connecting bodies, the pivoting component, the cushioning element, the nut, the screw and the guide element described therein, makes it possible to obtain a hinge capable of braking the closing of the door, eg the automatic closing of the door caused by a self-closing hinge, so that the wing when closing the door does not hit the frame, as will be explained later. In addition, if the features of claim 11 are present, the braking hinge can be disabled in the last part of the closing movement, e.g. at a certain angle, usually about 35° missing until the closing pivoting movement comes to an end, so that the sash still remains despite the braking has sufficient kinetic energy to optimally close the door.

As claimed in claim 12, the guide element is positively wedged in the longitudinal cavity of the connector body to simplify manufacture and make it cheaper, but it could equivalently be manufactured directly in the connector body, which would mean that the piece from the beginning on is one piece. Also in the case of the braking hinge, it is also useful to provide the guide bushing claimed in claim 13 in order to reduce friction and increase the life of the hinge and increase the time between one service and the next.

If, see claim 14, each connecting body has a recess and an oblong hole, it is possible, as will be explained later, to move the connecting body as required without removing it from the cavity and having access to the other components in order to to replace these.

Finally, in order to rule out the possibility of the presence of the cavity causing local weaknesses in the uprights of the frame, it is provided, see claim 15, that the bearing system additionally comprises a reinforcement body which connects the pair of connecting bodies of each hinge connected to the post.

Brief description of the drawings

• die Fig. 1 und 2 eine schematische Frontansicht des Türbereiches, in dem eines der Scharniere des Lagersystems angeordnet ist, jeweils in geschlossener Stellung und in um 180° vollständig offener Stellung der Tür;
• die Fig. 3 und 4 eine schematische perspektivische Darstellung in auseinandergezogener Anordnung von jeweils eines ersten und eines zweiten Ausführungsbeispiels des Scharniers der Fig. 1 und 2;
• die Fig. 5 eine Detaildarstellung des Inneren eines Endes des Scharniers der Fig. 4;
• die Fig. 6 eine schematische perspektivische Darstellung in auseinandergezogener Anordnung eines dritten Ausführungsbeispiels des Scharniers der Fig. 1 und 2;
• die Fig. 7-9 Detaildarstellungen des Inneren eines Endes des Scharniers der Fig. 6;
• die Fig. 10-12 eine schematische perspektivische Darstellung in auseinandergezogener Anordnung der Scharniere der Fig. 3, 4 und 6, wobei Bereiche des Flügels, des Pfostens, des Verstärkungskörpers und ein Verbindungsplättchen hinzugefügt wurden.

Further advantages and features of the invention emerge from the following description of exemplary embodiments of the storage system according to the invention for a door, which are explained with reference to the accompanying drawings purely by way of example but not in a limiting manner. In the drawings show schematically:

• the Figures 1 and 2 a schematic front view of the door area in which one of the hinges of the storage system is arranged, in each case in the closed position and in the 180° fully open position of the door;
• the 3 and 4 12 is a schematic exploded perspective view of a first and second embodiment of the hinge of FIG Figures 1 and 2 ;
• the figure 5 a detailed view of the interior of one end of the hinge of the 4 ;
• the 6 12 is a schematic exploded perspective view of a third embodiment of the hinge of FIG Figures 1 and 2 ;
• the Figures 7-9 Details of the interior of one end of the hinge 6 ;
• the Figures 10-12 a schematic exploded perspective view of the hinges of FIG 3 , 4 and 6 , adding areas of the wing, post, reinforcement body, and a connector plate.

Best way to carry out the invention

A storage system for a door is shown in the figures. Such a system includes a frame that serves as a frame for the leaf 1 of the door, and at least two hinges of a plurality of hinges 4,5,6. The hinges 4,5,6 differ from each other and they practice different functions, as will be explained later, providing at least two of them each, depending on the type of door and the functions to be performed. It goes without saying that, depending on the needs to be met, it is also possible to provide three or more hinges. The hinges 4,5,6 connect the wing 1 and a jamb 2 of the frame and define a pivot axis A about which the wing 1 pivots during opening or closing of the door.

The pillar 2 is provided with at least two different cavities 3 made in different positions, typically one above and one below, in the pillar 2 of the frame. The number of existing cavities and the number of hinges 4,5,6 provided are the same.

Each hinge 4,5,6 is placed in a single respective cavity 3 to which it is associated and comprises a pivoting component 7 which, see figure 10 , connected to the wing 1 and, as can be seen from the assembled view of the Figures 1 and 2 shows, during the opening and closing of the door about the pivot axis of the hinge 4,5,6 is pivotable. In the closed position of the door, the pivoting component 7 is in its own closed position, which is Fig.1 is shown. The pivoting component 7 of each hinge 4,5,6 has a cover portion 7a, the shape and dimensions of which are such that when the pivoting component 7 is in the closed position, see for example Figs 1 , it 7a largely covers the opening of the cavity 3 in which the hinge 4,5,6 is placed and its outer surface and the outer surfaces of the jamb 2 and wing 1 are coplanar.

In the figures, only a single pivot axis A has always been shown, because the pivot axis A of the wing 1 and the pivot axis of the pivotable component 7 of each hinge 4,5,6 match.

In a first 4 and in a second 5 embodiment of a hinge of the bearing system for a door according to the invention, each hinge 4;5 also comprises a pair of connecting bodies 8,8;8,9 each connected to the jamb 2, see fig the 10 , and by means of which the hinge 4; 5 is connected to the frame. The pivotable component 7 is mounted in such a way that it is pivotable in relation to the pair of connecting bodies 8,8;8,9. In accordance with this, each connecting body 8; 8, 9 has a pin-shaped section 8a; 8a, 9a. The pivoting component 7 in turn has a pair of seats 10, 11 intended to receive the pin-shaped portions 8a, 8a; 8a, 9a and aligned longitudinally one after the other. The alignment direction of the two seats 10,11 and the pivot axis of the hinge 4;5 match.

In line with the 3 and 4 , the seats 10,11 consist of through holes and each hinge 4;5 also comprises a support body 12 and a support bush 13 to which the pivoting component 7 transmits the weight of the leaf 1. The supporting body 12 is fixed, eg by means of oversize or a screw provided for this purpose, arranged in the seat 10, while the supporting bushing 13, on the other hand, is fixedly arranged on the pin-shaped section 8a of a connecting body 8 of the connecting body pair 8,8;8,9. The supporting body 12 and the supporting bush 13 rest one against the other in a mutually rotatable manner. For this purpose, the supporting body 12 has in particular a concave frustoconical bearing surface 12a, while the bearing bush 13 has a convex frustoconical bearing surface 13a.

The functioning of the hinge 4 is very simple. During the opening or closing of the door, the connecting bodies 8 always remain immovable because they are connected to the jamb 2, while the pivoting component 7, which, for example by means of an in 10 indicated connecting plate 24, with which wing 1 of the door is connected, however, swings. The support body 12 also pivots together with the pivotable component 7, while the support sleeve 13 also always remains immobile. The supporting body 12 and the supporting bush 13 touch each other by means of their frustoconical bearing surfaces, which rotate one relative to the other and transmit the weight of the wing 1 from the pivoting component 7 to the connecting body 8. The guide bushing 17 inserted in the seat 11 further facilitates the pivoting movement of the pivoting component 7. Each hinge 5 differs from each hinge 4 in that a longitudinal hole extends in the connecting body 9 and in its peg-shaped portion 9a and that each hinge 5 additionally an elastic element 14, a stressing device 15 and a barrier 16, for example in FIG 4 , are shown. The longitudinal hole is intended to receive the elastic element 14, which is inserted with one of its ends in the longitudinal hole and with its other end in the seat 11. The stressing device 15 is operatively coupled to the resilient member 14 to stress it and is also inserted into the seat 10 where it is held in place by the catch 16 so that it is rigidly connected to the seat 11.

As an elastic element, a torsion spring, see for example the Figures 4 and 5 , or a torsion bar can be used. In either case, the bottom of the longitudinal hole of the connector body 9 has a slit, and the end 14a of the elastic member 14 inserted into the longitudinal hole is tapered to form a beak inserted into the slit, as shown in FIG figure 5 emerges.

Each hinge 4, 5 also includes a guide bushing 17, which is arranged between the seat 11 and the pin-shaped portion 8a; 9a. The guide bushing 17 can be fixed in the seat 11 or on the pin-shaped projection 8a; 9a. It is also possible any passageway for an electrical feed cable 25, eg for a electric lock, or to make for any other need. For this purpose, the connecting body 8 and the peg-shaped section 8a as well as the supporting body 12 and the supporting bushing 13 each have a longitudinal through-hole.

The operation of the hinge 5 is as follows.

Referring to the functioning as a supporting hinge, if the supporting body 12 and the supporting bush 13 are also present, such functioning is the same as that previously explained for the hinge 4, so reference is made thereto. Referring instead to the operation as a hinge capable of automatically pivoting the leaf 1 in the closed position, this operation is based on the fact that the elastic element 14 is gradually stressed during the opening of the door and during the subsequent closing of the door 14, on the other hand, relaxes and the pivoting component 7 is subjected to a closing force which is transmitted from this to the wing 1. During the opening of the door, the elastic element 14, e.g 4 shown torsion spring, in the following situation: one end, ie the end 14a that is inserted into the slot of the longitudinal hole of the connecting body 9, is immovable and one end, the one that is coupled to the stressing device 15, on the other hand, rotates because the stressing device 15 together with the pivotable component 7 pivots. This causes a gradual loading of the elastic element 14 (gradual torsion of the torsion spring), so that as soon as the door is no longer held open by an external force, the elastic element 14 relaxes and causes the pivoting component 7, including the Wing 1 swings in the closing direction.

If the load occurring during the opening of the door should not be sufficient, for example in the case of heavy doors, it is also possible to insert the elastic element 14 already during assembly of the hinge 5 to charge. For this purpose it suffices to turn the stressing device 15 manually before it is held firmly in position by means of the catch 16. In this way, a permanent stress is generated in the elastic element 14, which stress is additional to the stress generated during the opening of the door.

In the Figures 6-9 a third exemplary embodiment of a hinge for a storage system according to the invention is shown. It is a hinge 6 which is able to act against the closing movement of the door 1 with a braking effect.

Each hinge 6 comprises a pair of connecting bodies 8,18 each of which is connected to the post 2 and by means of which the hinge 6 is connected to the frame. The pivotable component 7 is also mounted in this case in such a way that it is pivotable in relation to the connecting body pair 8,18. In accordance with this, the connecting body 8 of the pair of connecting bodies 8,18 has a peg-shaped section 8a, while the connecting body 18 of the pair of connecting bodies 8,18 has a longitudinal cavity 18a. The pivoting component 7 in turn has a pair of seats 10, 11 made up of through holes and aligned longitudinally one after the other, one of which 11 is intended to receive the pin-shaped portion 8a. The direction of alignment of the two seats 10,11 and the pivot axis of the hinge 6 coincide. In this third exemplary embodiment, each hinge 6 additionally includes a damping element 19, a nut 20, a screw 21 and a guide element 22. The latter 22 is arranged in a fixed manner in the longitudinal cavity 18a, eg clamped in a form-fitting manner. The damping element 19 is arranged in both seats 10, 11 and rests with one of its ends on the pin-shaped section 8a. In contrast, the nut 20 is fixed in the seat 10 . The screw 21 can be screwed into/out of the nut 20 and has at least one projection on the head side 21a, which is slidably fitted in at least one guide groove 22a provided in the guide member 22. During the opening or closing of the door, the at least one projection 21a runs within the at least one guide groove 22a. The latter 22a extends along an L-shaped path: one section is parallel to the pivoting axis of the hinge 6 and another section is perpendicular to the pivoting axis of the hinge 6.

Also in the case of the hinge 6, a guide bushing 17 is provided, which is arranged between the seat 11 and the peg-shaped portion 8a and which can be arranged, indiscriminately, either in one 11 or on the other 8a.

The operation of the hinge 6 is as follows.

In the situation where the door is fully open, i.e. 180°, like that of 2 , the screw 21, on the side of the nut 20 facing the damping element 19, does not protrude from the nut 20 and the projection 21a of the screw 21 is located at the end of the section of the guide groove 22a that is parallel to the pivot axis of the hinge, see the 7 . When the pivoting component 7 pivots due to the closing of the door, the nut 20 also rotates together with this 7, since the nut 20 is fixed in the seat 10. However, the section of the guide groove 22a parallel to the pivot axis of the hinge 6 does not allow the screw 21 to rotate, but only to slide it, thereby unscrewing the screw 21 during the rotation of the nut 20 and gradually, on the one facing the damping element 19 Side of the nut 20 from which the nut 20 emerges. The projection 21a of the screw 21 simultaneously runs within the guide groove 22a in the direction of the second section of the guide groove 22a, ie to the section lying perpendicular to the pivot axis of the hinge 6. When exiting the nut 20, the screw 21 presses against the damping element 19, which is gradually positioned between the screw 21 and the peg-shaped portion 8a against which it 19 rests. The damping element 19 opposes the translational movement of the screw 21 and this creates a braking effect on the rotation of the nut 20 and consequently on the pivoting component 7 and on the wing 1. This situation remains until the projection 21a reaches the point of the guide groove 22a in which this changes its direction, see the 8 . From this point onwards the screw 21 can also rotate, whereby its translational movement towards the damping element 19 ceases and therefore the counteraction of the damping element 19 and consequently the braking effect applied by the hinge 6 also cease. The point at which the guide groove 22a changes direction is reached when about 35° is missing from completing the closure. During this final part of the pivoting movement, the projection 21a completely traverses the portion of the guide groove perpendicular to the pivot axis of the hinge 6 and it reaches the end of this portion of the guide groove 21a, see Fig 9 .

During the opening of the door, the opposite of what has just been explained happens. In the situation where the door is closed, see the 9 , the screw 21 projects out of the nut 20 on the side of the nut 20 facing the damping element 19 and touches the damping element, while the projection 21a of the screw 21 is located at the end of the section of the guide groove 22a that is perpendicular to the pivot axis of the hinge 6 . When the pivoting component 7 pivots in the opposite direction with respect to the closing direction, the nut 20 and the screw 21 also rotate together with it 7, but the latter only until their projection 21a has not yet returned to the point where the guide groove 22a changes direction, see the 8 . From there on, the section of the guide groove 22a that is parallel to the pivot axis of the hinge 6 allows It is not that the screw 21 rotates during the further pivoting movement, but only that it is displaced, whereby the screw 21 is screwed in during the rotation of the nut 20 and penetrates back into the nut 20. The screw moves further and further away from the damping element 19 and emerges from the opposite side. The damping element 19, which can for example be a hydraulic damper, is no longer compressed and can thus gradually return to its initial state.

As has already been explained, the connecting bodies 8; 9; 18 connect a hinge to the post 2. For this purpose, each of them 8; 9; 18 has a recess 8b; 9b; 18b and a slot 8c; 9c; 18c, through which the fastening screws are passed, which are in particular three: one is passed through the recess 8b; 9b; 18b and two are passed through the slot 8c; 9c; 18c. Thanks to the recess 8b; 9b; 18b and the oblong hole 8c; 9c; 18c, a part of a hinge 4; 5; 6 can be replaced by leaving the attached hinge in the cavity 3. In fact, if you loosen the three fixing screws and then remove one of the two screws inserted in the oblong hole 8c; 9c; 18c, the one closer to the recess 8b; 9b; 18b, it is possible to move the connecting body by other fastening screw can slide within the slot 8c; 9c; 18c. In this way, the connecting bodies 8.8; 8.9; 8.18 move away from each other and you have access to the components of the hinge 4; 5; 6. The bearing system also comprises a reinforcement body 23 which connects the pair of connecting bodies 8,8;8,9;8,18 of each hinge 4;5;6 to the post 2 to form a local reinforcement. All examples of the hinges 4;5;6 therefore have the reinforcement body 23 and in 10 6 shows, as an example valid for all the hinges 4;5;6, the hinge 4 together with 4 areas of the jamb 2, the wing 1, the reinforcement body 23 and the connecting plate 24.

Claims (15)

1. Bearing system for a door, comprising:

   a frame, which acts as a casing for the wing (1) of the door and is provided with at least two different hollows (3) obtained in different positions in the same jamb (2) of the frame, and

   at least two hinges of a plurality of hinges (4,5,6), which connect the wing (1) and the jamb (2) with each other and define an axis of rotation (A) around which the wing (1) rotates during the opening or the closing of the door, each hinge (4,5,6) comprising a rotatable component (7), which is connected to the wing (1) and is rotatable around an own axis of rotation during the opening or the closing of the door, in a closed door position the rotatable component (7) being in its closing position, characterised in that each hinge (4,5,6) is placed in a single respective hollow (3) with which it is associated, in that each hinge (4;5;6) comprises also a couple of connecting bodies (8,8;8,9;8,18), each of which is connected to the jamb (2) and by means of which the hinge (4;5;6) is connected to the frame, in that the rotatable component (7) is supported in such a manner that it (7) is rotatable with respect to the couple of connecting bodies (8,8;8,9;8,18), in that the rotatable component (7) has a cover portion (7a), whose shape and whose size are such that, when the door is closed and the rotatable component (7) is in its closing position, it (7a) largely covers the opening of the hollow (3) in which the hinge (4,5,6) is placed and its external surface is in the same plane as the external surface of the jamb (2) and of the wing (1), and in that the axis of rotation (A) of the wing (1) and the axis of rotation of the rotatable component (7) coincide.
2. System according to claim 1, characterised in that each connecting body (8;8,9) of the couple of connecting bodies (8,8;8,9) of the hinge (4;5) has a pin-shaped portion (8a;8a,9a) and in that the rotatable component (7) has a couple of seats (10,11), which are intended to house the pin-shaped portions (8a,8a;8a,9a) and longitudinally aligned to each other, the direction of alignment of the couple of seats (10,11) coinciding with the axis of rotation of the hinge (4;5).
3. System according to claim 2, characterised in that the seats (10,11) consist of through-holes and that each hinge (4;5) further comprises a load-bearing body (12), which is placed in a fixed way in the seat (10), and a load-bearing bushing (13), which is placed in a fixed way on the pin-shaped portion (8a) of a connecting body (8) of the couple of connecting bodies (8,8;8,9), the load-bearing body (12) and the load-bearing bushing (13) abutting in a mutually rotary way against each other.
4. System according to claim 3, characterised in that the load-bearing body (12) has a truncated cone-shaped concave support surface (12a) and in that the load-bearing bushing (13) has a truncated cone-shaped convex support surface (13a).
5. System according to one of the claims from 2 to 4, characterised in that in the connecting body (9) and in its pin-shaped portion (9a) a longitudinal hole extends and in that each hinge (5) further comprises an elastic element (14), which is inserted with one of its ends into said longitudinal hole and with the other one of its ends into the seat (11), and a stress device (15), which is operatively coupled to the elastic element (14), for tensioning it, and is inserted as well (15) into the seat (10), each hinge (5) further comprising in addition a stop (16), by means of which the stress device (15) is locked in position in the seat (10).
6. System according to claim 5, characterised in that the bottom of said longitudinal hole has a slit and in that the elastic element (14) is a torsion spring, whose end (14a) inserted into said longitudinal hole is tapered to form a beak which is inserted into the slit.
7. System according to claim 5, characterised in that the bottom of said longitudinal hole has a slit and in that the elastic element (14) is a torsion bar, whose end inserted into said longitudinal hole is tapered to form a beak which is inserted into the slit.
8. System according to one of the claims from 2 to 7, characterised in that each hinge (4,5) comprises a guiding bushing (17), which is placed between the seat (11) and the pin-shaped portion (8a;9a).
9. System according to one of the claims from 3 to 8, characterised in that the connecting body (8), the pin-shaped portion (8a), the load-bearing body (12) and the load-bearing bushing (13) have each one a passing-through longitudinal hole, to create a passage path for an electrical power supply cable (25).
10. System according to claim 1, characterised in that the connecting body (8) of the couple of connecting bodies (8,18) of the hinge (6) has a pin-shaped portion (8a), while the connecting body (18) of the couple of connecting bodies (8,18) of the hinge (6) has a longitudinal hollow (18a), in that the rotatable component (7) has a couple of seats (10,11) longitudinally aligned to each other, one (11) of which is intended to house the pin-shaped portion (8a) and in that the direction of alignment of the couple of seats (10,11) coincides with the axis of rotation of the hinge (6), each hinge (6) further comprising: a damping element (19), which is placed in both seats (10,11) and abuts by one of its ends on the pin-shaped portion (8a); a nut screw (20), which is placed in a fixed way in the seat (10); a screw (21), which is able to be screwed in the nut screw (20) respect. unscrewed off out of it and is provided at the head with at least one protrusion (21a), and a guiding element (22), which is placed in a fixed way in the longitudinal hollow (18a) and has at least one guiding groove (22a), in which the at least one protrusion (21a) is inserted in a sliding way, during the opening or the closing of the door (1) the at least one protrusion (21a) sliding in the guiding groove (22a).
11. System according to claim 10, characterised in that the guiding groove (22a) extends according to an "L" path, for a length parallelly to the axis of rotation of the hinge (6) and for another length perpendicularly to the axis of rotation of the hinge (6).
12. System according to claim 10 or 11, characterised in that the guiding element (22) is locked by geometric coupling in the longitudinal hollow (18a) of the connecting body (18).
13. System according to one of the claims from 10 to 12, characterised in that each hinge (6) comprises a guiding bushing (17), which is placed between the seat (11) and the pin-shaped portion (8a).
14. System according to one of the preceding claims, characterised in that each connecting body (8;9;18) has a recess (8b;9b;18b) and an eyelet (8c;9c; 18c).
15. System according to one of the preceding claims, characterised in that it further comprises a reinforcing body (23), which connects the couple of connecting bodies (8,8;8,9;8,18) of each hinge (4;5;6) to the jamb (2).

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