FR2884851A1 - Safety metallic cladding door for ancient building, has locking and framing sheet plates forming housing in which locking block is slidingly inserted, where framing plate has side with hole in which u-turn spring bolt of block is engaged - Google Patents

Abstract

The door has a locking sheet plate with a U-shape presenting long and short branches. The plate is arranged along a vertical lateral side of a framing sheet plate so that the long branch is fixed on the framing plate`s bottom and the short branch is placed on a side opposite to the lateral side to form a vertical housing in which a locking block (19) is slidingly inserted. The lateral side has holes (25, 26, 27) aligned with bolts (21, 22, 23) of the block, where a u-turn spring bolt (22) and a hole (26) have a larger section such that the bolt (22) is engaged only in its associated hole.

Description

The present invention relates to the design and

  realization of metal-shielded security doors which comprise a multi-point locking block. Such doors can be installed with their frame or in an existing frame. They can also, in the case where it is desired to preserve the external appearance of the door, for example in old buildings whose architecture is protected, provide that the shield is placed on the inner face of the door leaf, the outer face of the leaf being retained without shielding.

  These security doors comprise a framing inner sheet whose vertical edges are bent twice at right angles inward so as to have, on each side, a wing parallel to its bottom. On one of the edges of the inner face of the door, there is fixed a locking block which is in the form of a vertical housing which comprises horizontal locking bolts, including a latch bolt which is held in the closed position by a spring, and usually also one or two vertical bolts that engage in corresponding holes of the door frame.

  The locking block is a part which protrudes from the frame sheet and which affects the aesthetic appearance of the inner face of the door. In addition, it is necessary to provide a frame that protrudes from the inner face of the door to receive the bolts, which further impairs the aesthetic appearance of the interior of the door.

  Furthermore, the exact positioning of the locking block and its attachment to the frame sheet are complex and long operations, which affects the cost.

  The manufacture of such doors is carried out in series and requires many operations of cutting and folding sheets, assembling the various sheets and their attachment to one another. It is then necessary to set up the locking block, which also requires delicate operations of precise positioning. It is therefore desirable to simplify this manufacture to greatly reduce the cost price.

  In particular, the fixing of the different sheets on each other is performed by spot welds and requires to maintain them by means of clamps to maintain accurate positioning during welding operations.

  These multi-point locking metal doors are security doors and it is advantageous to provide devices called anti-clamp which prevent the use of a lever to force the door.

  We often foresee crackers that allow to open the door without the possibility of full opening when we are inside. These devices are not integrated during the manufacture of the door and are accessories that are attached to the inner side wall of the door frame and cooperate with an insert on the inner face of the door. Because of this attachment, they can be easily torn off and they do not have a significant resistance to an attempt to force the door open. It is therefore desirable to provide a more reliable guard and integrated into the door.

  Some locking blocks include a vertical bolt that engages at the top of the door frame. It is desirable to ensure precise guidance of this vertical bolt for locking the door.

  The present invention relates to a door of the aforementioned type that solves the problems just mentioned.

  It is particularly remarkable in that it comprises a locking plate which has, in horizontal section, the shape of a U having a long branch and a short branch, in that said locking plate is disposed in the sheet metal. framing along a first vertical side face of the frame 2884851 3 so that the long leg of the U rests and is'fixée on the bottom of the frame sheet and the short leg of the U is arranged the side opposite to, said first vertical side face of the frame sheet so as to form a vertical housing in which the locking block can be slidably inserted, in that the first vertical side face of the frame sheet which the housing comprises holes arranged in alignment with the bolts of the locking block and in that the spring latch bolt and the corresponding hole have a larger section than the other bolts so that the latch bolt can engage only in the hole associated with it.

  In this way, the locking block is integrated in the door during the manufacture of the latter. This simplifies the manufacturing operations of the door and, consequently, reduces the cost price. In addition, the aesthetic aspect of the inner face is improved since there is no longer an insert on the inner face of the door.

  In addition, this structure allows a quick and precise positioning of the locking block in its housing, simply slide the locking block into its housing, the latch bolt is pushed against the effect of its spring in position opening until it reaches the hole of the corresponding frame sheet, it is then pushed into this hole by its spring in its closed position, which stops the movement of the locking block who is automatically put in the right position in his home.

  According to one embodiment of the invention, the door comprises reinforcing plates which are arranged one above the other in the frame sheet and whose horizontal edges are folded at right angles so as to present a wall which is fixed on the bottom of the frame sheet and a closure plate which is welded to the flanges of the frame sheet and the bottom of the reinforcing sheets. The length of the reinforcing plates is smaller than the distance between the flanges of the frame sheet 2884851 4 and the reinforcing plates are arranged along the wing of the first vertical side face of the frame sheet so to clear a free space for the locking plate between the wing of the first vertical side face of the frame sheet and the reinforcing plates.

  This reinforces the structure of the door, the process of manufacturing and mounting the door is simple and fast, which reduces the cost of manufacture.

  According to another embodiment of the invention, which concerns the case where an inner shield of the door is made without modifying its outer face, the framing plate comprises two additional folds at right angles so as to provide the along said first vertical side face, in the bottom, a groove for receiving the locking plate and the leaf of an existing door is introduced into the frame sheet by sliding under the two flanges of the frame sheet.

  Advantageously, the width of the vertical housing is slightly less than the width of the locking block.

  In this way, the sliding of the locking block is facilitated and, once it is put in place, it is pushed against the side wall of the frame sheet and fixed in this position, which further simplifies its set up.

  According to yet another characteristic of the invention, the flanges of the frame sheet comprise bosses and the closure plate has holes arranged facing the bosses of the flanges of the frame sheet.

  This simplifies the positioning of the closing plate for the assembly of the door.

  Advantageously, some holes of the closing plate have a diameter slightly greater than the diameter of the corresponding boss of the frame sheet so that said boss penetrates forcibly into the corresponding hole.

  With this arrangement, the closing plate is fixed relative to the frame sheet and it is not necessary to provide clamps to hold it during the welding operations that are performed by welding introduction in the holes of the closing plate.

  Therefore, the attachment by welding requires less welding material and reduces the protuberances of the welding material on the inner face of the door, which simplifies the finishing operations.

  According to yet another characteristic of the invention, the door comprises an anti-clamp safety device consisting of an angled rabbet which is fixed on the door frame and which has an outer portion which has a cross section in the form of a U so as to provide a housing which is disposed along the outer face of the door and whose opening is closed by the door and by a flat bar which is fixed at right angles to the edge of the outer face of the door opposite the housing of the anti-clamp device.

  The outer portion of the anti-clamp device opposes the introduction of a lever such as a monseigneur clamp between the door and its frame. In addition, if this outer part is forced, the flat bar will still prohibit the introduction of a monseigneur gripper.

  Advantageously, the anti-clamp device comprises a housing for a seal which comes into contact with the outer face of the door and provides sealing between the threshold bar and the outer face of the door. This anti-clamp device also allows to obtain a sealed closure of the door.

  When the door is mounted on an existing frame, the rabbet has an inner portion which has the shape of a U whose bottom is arranged in the same plane as the inner face of the door and whose branches are placed against the inner face existing framework. This inner part makes it possible to adapt the door to the existing frame which is thus aligned with the inner inner face of the door. The free end of this inner part is cut to the desired length to obtain this alignment.

  The door according to the invention may comprise a stay constituted by a guide which is fixed pivotally on the inner face of the door frame and which comprises a guide slot whose end close to the frame has an enlarged section and the locking block comprises a bolt whose free end can be engaged in the guide slot and which is controlled separately.

  This keeper can not be easily torn off because it is fixed on the inner side and not on the inner side of the frame. In addition, the specific bolt provided for this purpose can also withstand a force opening action of the door.

  Advantageously, the bolt of the stay has at its free end a peripheral groove whose width is slightly less than the width of the guide slot of the stay. This makes it possible to increase the mechanical strength of this bolt.

  According to yet another characteristic of the invention, the door comprises at least one vertical bolt and, in this case, the locking plate has on its corresponding vertical edge a folded right angle tab which has a hole for guiding the vertical bolt. .

  This makes it possible to obtain precise positioning of the entire locking block.

  Advantageously, the horizontal edges of some of the reinforcing plates are folded twice at right angles so as to have an omega section with a wing which is parallel to the bottom of the frame sheet and which rests on said bottom.

  This makes it possible to increase the reinforcement of the door by stiffening it.

  The invention will now be more completely described in the context of preferred features and their advantages, with reference to FIGS. 1 to 8 in which: FIG. 1 represents, in perspective, a door according to the invention; - Figure 2 is a partial perspective view showing the locking block and the first side face of the frame sheet; - Figure 3 is a partial sectional view of the closure plate and one of the flanges of the frame sheet; - Figure 4 is a partial view showing the entrebâilleur; - Figure 5 shows the guide of the croaker seen from the front; - Figure 6 is a partial of the specific bolt of the entrebâilleur; - Figure 7 shows the anti-clamp device; - And Figure 8 shows a partial sectional view, an embodiment of the invention in which there is integrated an existing door leaf which we want to keep the outer face.

  The metal door which is shown in exploded perspective in Figure 1 consists essentially of a frame sheet 1, reinforcing plates and a closure plate 3 which is shown in broken lines.

  The framing plate 1 generally constitutes the inner face of the door. Its two vertical edges are bent at right angles twice inward so as to have two flanges 4 and 5 parallel to the frame sheet. We thus obtain a kind of frame having a bottom 6 and two vertical edges.

  In this context, there are several, for example three, reinforcing plates 7, 8 and 9 which are arranged transversely between the two wings 4 and 5 and whose horizontal edges are bent at right angles so as to form two walls. 11 and 12 and present, in section, the shape of a U. The reinforcing plates 7, 8 and 9 rest on the bottom 6 by the edges of the walls 11 and 12 and the main part 2 of the reinforcing plates 7, 8 and 9 is opposite the bottom 6. The reinforcing plates 7, 8 and 9 are fixed on bottom 6 of the frame sheet 1 by welding points made between the bottom 6 and the edges of the walls 11 and 12. The height of the walls 11 and 12 is such that the funds 2 of the reinforcing plates 7 , 8 and 9 are in the same plane as the flanges 4 and 5 of the frame sheet 1 and delimit the door outwards.

  The closure plate 3 constitutes the outer face of the door, it has the same dimensions as the frame sheet 1 and is fixed by welding on the flanges 4 and 5 of the frame sheet 1 and the funds 2 of the reinforcing plates 7, 8 and 9.

  Advantageously, some of the reinforcing plates, such as the reinforcing plate 8, are folded twice at right angles so as to have an omega section and comprise a flange 10 which is parallel to the bottom, 6 of the frame sheet 1 and which is supported on the bottom 6 of the frame sheet 1.

  The reinforcing plates 7, 8 and 9 are fixed on the bottom 6 of the frame plate 1 by welding points 13 on the edges of the walls 11 and 12 or on the edge of the flanges 10.

  According to the invention, the length of the reinforcing plates 7, 8 and 9 is smaller than the distance separating the edges of the flanges 4 and 5 and the reinforcing plates 7, 8 and 9 are placed in contact with the flange 5 of the second vertical lateral face 20 of the frame sheet 1 so as to clear a free space between the second flange 4 of the frame sheet 1 and the reinforcing sheets 7, 8 and 9. In this free space, one provides a locking plate 14 which is arranged vertically between the flange 4 of the first vertical side face 16 of the frame plate 1 and the reinforcing plates 7, 8 and 9. This plate 14 2884851 9 locking rests on the bottom 6 of the framing plate 1 and its edge which is close to the reinforcing plates 7, 8 and 9. is bent twice at right angles inwards so as to form a wing 15 which is in the same plane that the wings 4 and 5 and the funds 2 of the reinforcing plates 7, 8 and 9 and which is directed towards the second wing 4.

  The locking plate 14, its flange 15 and the flange 4 of the framing plate 1 delimit a vertical housing in which a locking block (not shown) is inserted which is slid to place it in a position of operation in which the bolts of this locking block are arranged opposite holes formed in the first side face 16 of the frame sheet 1 which is close to the locking plate 14.

  Generally, this locking block comprises a vertical bolt which engages in the top of the door frame. In this case, the locking plate 14 comprises, at its upper part, a lug 17 in which is formed a hole 18 for the passage of the vertical bolt, which ensures a good positioning of the latter.

  FIG. 2 schematically and partially shows the locking block 19 which comprises three horizontal bolts 21 to 23 and the vertical bolt 24. The holes for passing the bolts 25 to 27 formed in the first face are seen In accordance with the invention, the latch bolt 22 and its corresponding hole 26 have larger dimensions than the other bolts 21 and 23 and their corresponding holes 25 and 27. As a result, the latch bolt 22 can not engage in its hole 26 and not in the holes 25 and 27 of the other horizontal bolts.

  This allows automatic positioning of the locking block 19 in its housing. Indeed, when sliding the locking block 19 in its housing, the normal bolts 21 and 23 are retracted into the locking block 19, but the latch bolt 22 remains out under the effect of its return spring in closing position. When the locking block 19 slides in its housing, the latch bolt 22 is pushed back inside the locking block 19 and slides along the first side face 16 until it reaches the level of the locking block 19. its hole 26 in which it engages under the effect of its spring, which blocks the locking block 19 in the right position.

  FIG. 3 partially shows the closure plate 3 and one of the flanges 4 or 5 of the frame plate 1. In this flange, bosses 33 have been formed, two of which are shown, before the folding operations. , which are arranged opposite holes formed in the closure plate 3. The holes, such as the hole 31, have a diameter much greater than that of the bosses 33 so that the boss 33 corresponding easily penetrates into the hole 31 when the closure plate 3 is placed on the flanges 4 and 5 of the framing plate 1 and the bottoms 2 of the reinforcing plates 7, 8 and 9 for fixing it by welding.

  On the other hand, some of the holes, such as the hole 32, have a diameter which is very slightly greater than that of the corresponding boss 33 so that the boss 33 penetrates forcibly into the hole 32 when the closing plate 3 is pressed onto the framing plate 1, which ensures a fixing of the closing plate 3 on the framing plate 1 during the welding operation which is performed by introducing welding into the holes 31 and 32 of the closure plate 3. For example, the bosses 33 have a diameter of 6 mm and the holes 31 a diameter of 7 mm, while some holes 32, for example every other hole, have a diameter of 6.2 mm.

  This arrangement makes it possible to obtain the fixing and the positioning of the closure plate 3 on the frame sheet 1 without having to use clamps. Moreover, it is possible to increase the distance between the holes, which can be doubled while maintaining the same strength and, consequently, to reduce the number of holes and bosses. This simplifies the manufacture and decreases the cost price.

  Figures 4, 5 and 6 show a stay according to the invention. It comprises a flat guide 35 which is pivotally attached 2884851 11 about a vertical axis on the inner face of the frame 36 of the door 38 and which is arranged between the door 38 and the frame 36. This guide 35 cooperates with a specific bolt 37 of the locking block 19 and comprises a guide slot 39 whose end 41 close to the frame has an enlarged section. The bolt 37 is controlled by a specific device to protrude into the space between the lateral face of the door 38 and the frame 36 and pass through the widened end 41 of the slot 39.

  The free end of the bolt 37 has a peripheral groove 42 whose width is slightly less than the width of the guide slot 39 of the stay. This makes it possible to lock the bolt 37 in the slot 35 when the bolt 37 has been introduced into the widened end 41 of the guide 35 and the door 38 opens. The guide 35 pivots to become horizontal and the door 38 can half open until the bolt 37 reaches the bottom 43 of the guide slot 39, which mutes the opening of the door 38.

  Figure 7 shows in partial horizontal section the door 38 and the frame 36 between which is disposed an anti-clamp safety device.

  This anti-clamp safety device is constituted by a bent rabbet which is fixed on the frame 36 of the door 38. This rabbet has an outer portion 44 which has, in section, the shape of a U so as to achieve a housing 45 which is disposed along the outer face of the door 38 and whose opening is closed by the door. . The anti-clamp device is also constituted by a flat bar 46 which is fixed at right angles to the edge of the outer face of the door 38, that is to say on the locking plate 14, facing the housing of the anti-pinch device. This prevents the introduction of a lever between the door 38 and the threshold bar 40 the frame 36 to force the door 38. Even if we can open the outer portion 44 of the rabbet, the bar 46 will oppose the passage of the lever.

  The anti-clamp device may comprise a housing 47 for a seal which comes into contact with the outer face of the door 38 and provides a seal between the threshold bar 40 and the outer face of the door 38.

  When the door 38 is mounted on an existing frame 36, the rabbet may comprise an inner portion 48 which has the shape of a U whose bottom is disposed in the same plane as the inner face of the door 38 and whose branches are placed against the inner face 49 of the existing frame 36.

  When the existing frame 36 is set back from the inner face of the door 38, this inner portion 48 compensates for the recess between the door 38 and the existing frame 36 so that they are aligned in the same plane , which improves the aesthetic appearance when installing a new door in an existing frame.

  FIG. 8 represents another embodiment of the invention in which an existing leaf 51 is integrated in the frame plate 52. This leaf 51 is engaged by sliding between the bottom 6 and the two wings 56 and 57 of the sheet metal. framing 52 and is then fixed by any appropriate means.

  In this embodiment, the frame plate 52 comprises two additional folds at right angles so as to provide, along said first vertical lateral face 53, in the bottom 6, a groove 50 in which the locking plate is placed. 58, the long leg of the U being fixed on the bottom 59 of the groove and the short leg of the U being opposite the second vertical lateral face 53. The locking block 19 is slidably inserted into the locking plate 58.

  This figure 8 shows the rods 54 and 55 of the anti-pinch device which are formed on the wings 56 and 57.

  In the two illustrated embodiments, the locking plate 1 or 58 is fixed by solder points made between the edge between the short leg of the U and its bottom and the edge of the reinforcing plates 7, 8 and 9 for the first embodiment and the bottom 6 of the frame plate 52 in the second embodiment. Fixing the long branch of the U on the bottom 6, in the first embodiment, or on the bottom 59, in the second embodiment, is made by capping, that is to say in the same way as for fixing the closing plate 3 on the flanges 4 and 5 (see FIG. 3) of the frame sheet 1.

  The foregoing description clearly explains how the invention proceeds in a manner that can not be predicted by those skilled in the art and how it achieves the goals it has set for itself. In particular, it makes it possible to significantly reduce the manufacturing operations and, consequently, its cost price.

  In particular, the fixing of the closure plate on the frame sheet during welding operations is ensured without the use of clamps.

  The anti-clamp device is particularly effective and allows, in addition to sealing the door in its frame and improve the aesthetic appearance when the door is mounted in an existing frame.

  Attaching the fence guide in the side face 20 of the frame has increased security against attempts to force the door when using the stay.

  Nevertheless, it follows from the foregoing that the invention is not limited to the modes of implementation which have been specifically described in the course of the examples above and that it extends on the contrary to any variant passing through the equivalent means.

Claims (2)

  1. A metal-shielded security door having a framing inner panel (1, 52) whose vertical edges are folded twice at right angles inwardly to present on each side a wing (4, 5). ) parallel to its bottom (6) and a vertical locking block (19), characterized in that it comprises a locking plate (14, 58) which has, in horizontal section, the shape of a U having a branch long and short leg, in that said locking plate (14) is arranged in the frame plate (1, 52) along a first vertical side face (16) of the frame sheet in such a manner that the long leg of the U rests and is fixed on the bottom of the frame plate and that the short leg of the U is disposed on the opposite side to said first vertical side face (16, 53) of the frame plate (1 , 52) so as to form a vertical housing into which one can introduce slidingly releasing the locking block (19), in that the first vertical lateral face (16, 53) of the frame sheet (1, 52) defining the housing comprises holes (25, 26, 27) arranged in alignment with the bolts (21, 22, 23) of the locking block (19) and in that the spring-loaded latch bolt (22) and the corresponding hole (26) have a larger section than the other bolts ( 21, 23) so that the latch bolt (22) can engage only in the hole (26) associated therewith.   2. Safety door according to claim 1, characterized in that it comprises reinforcing plates (7, 8, 9) which are arranged one above the other in the frame sheet (1) and whose horizontal edges are bent at a right angle so as to have a wall (11, 12) which is fixed on the bottom (6) of the frame sheet (1) and a closing sheet (3) which is welded on the flanges (4, 5) of the frame plate (1) and on the bottom (2) of the reinforcing plates (7, 8, 9), the length of the reinforcing plates (7, 8, 9) ) being smaller than the distance between the flanges of the frame plate (1) and that the reinforcing plates (7, 8, 9) are arranged along the flange (5) of the second side face vertical (20) of the frame sheet (1) so as to clear a free space for the locking plate between the flange (4) of the first vertical side face of the frame sheet (1) and the plates of r enforcement (7, 8, 9).   3. Security door according to claim 1, characterized in that the frame plate (52) comprises two additional folds at right angles so as to arrange, along said first vertical side face (53), in the bottom ( 6), a groove (50) for receiving the locking plate (58) and that the leaf (51) of an existing door is slidably inserted into the frame plate (52) under the two wings of the framing plate (52).   4. Security door according to claim 1, characterized in that the width of the vertical housing (50) is slightly less than the width of the locking block (19).   5. Safety door according to claim 2, characterized in that the wings (4, 5) of the frame plate (1) comprise bosses (33) and in that the closing plate (3) has holes (31, 32) arranged facing the bosses (33) of the wings (4, 5) of the frame plate (1).   6. Safety door according to claim 5, characterized in that some holes (31) of the closure plate (3) have a diameter slightly greater than the diameter of the boss (33) corresponding to the frame sheet (1). such that said boss (33) is forced into the corresponding hole (31).   7. Security door according to claim 5 or 6, characterized in that the fastening of the closing plate (3) on the flanges (4, 5) of the framing plate (1) is achieved by introduction of welding in the holes (31, 32) of the closing plate (3).   8. Security door according to any one of the preceding claims, characterized in that it comprises an anti-clamp safety device consisting of a bent rabbet which is fixed on the frame (36) of the door (38) and which has an outer portion (44) having a U-shaped cross-section so as to provide a housing which is disposed along the outer face of the door (38) and whose opening is closed by the door ( 38) and a flat bar (46, 54, 55) which is fixed at right angles to the edge of the outer face of the door (38) facing the housing of the gripper device.   9. Security door according to claim 8 according to claim 2, characterized in that the flat bar (55, 56) is fixed on each of the two wings of the frame sheet.   10. Security door according to claim 8, characterized in that said bent rabbet has a housing (47) for a seal which comes into contact with the outer face of the door (38) and seals between the threshold bar (40) of the frame (36) and the outer face of the door (38).   11. Security door according to claim 8, characterized in that, when the door (38) is mounted on an existing frame (36), the rabbet has an inner portion (48) which has the shape of a U whose bottom is disposed in the same plane as the inner face of the door (38) and whose branches are placed against the inner face of the frame (36) existing.   12. Door according to any one of the preceding claims, characterized in that it comprises a stay constituted by a guide (35) which is pivotally attached to the inner face of the frame (36) of the door (38). and which comprises a guide slot (39) whose end (41) close to the frame (36) has an enlarged section and in that the locking block (19) comprises a bolt (37) whose end free can be engaged in the guide slot (39) and which is controlled separately.   13. Door according to claim 12, characterized in that the bolt (37) of the stay has, at its free end, a peripheral groove (42) whose width is slightly less than the width of the guide slot (39). ) of the stay.   14. Door according to any one of the preceding claims, characterized in that the locking block (19) comprises at least one vertical bolt (24) and in that the locking plate (14) comprises at its corresponding vertical edge a tab (17) folded at right angles which has a hole (18) for guiding the vertical bolt (24).   Door according to claim 2, characterized in that the horizontal edges of some of the reinforcing plates (8) are bent twice at right angles so as to have an "omega" section with a flange (10) which is parallel at the bottom (6) of the frame plate (1) and which is fixed on said bottom (6).