EP1207263B1 - Metal door casing frame for security door - Google Patents

Description

Technical field to which the invention relates

The present invention relates to a metal door jamb for security door intended to be filled by a concrete or a binder, respectively a method of mounting such a doorframe.

State of the art

The burglarproof, acoustic or fireproof quality of a security door depends, among other things, on the quality of the integration of its metal door jamb into the wall.

According to the state of the art, the mounting of a metal doorframe of a security door is as follows. The door jamb is adjusted and wedged in an oversized doorway with respect to the outer dimensions of the doorframe, so that there are still fairly large slots between the outer edges of the doorframe and the edges of the bay. Via these slots, the door is welded to legs previously sealed in the wall. Then we lock the vertical slots that remain between the jambs of the jamb and the wall of support. The filling of the door frame with concrete or binder is then done by two fairly large horizontal slits, which remain between the transom of the doorframe and the lintel of the bay.

This editing technique causes multiple problems. First, it should be noted that the setting of the jamb in a largely oversized bay is a delicate operation. Welding the doorframe to the brackets is not easy either. In fact, the welder must weld through the slot remaining between the outer edges of the doorframe and the wall and therefore does not see well what it does. However, if, for example, it remains too long in the weld position of the doorframe, it can pierce it. It should also be noted that on construction sites, we do not always have enough amperage to weld. Another problem is the waterproof formwork of the mounting slots vertical. Since it is quite difficult to achieve this formwork with a good seal, it is necessary to use for the filling of the jamb a concrete or a binder quite consistent. However, such a concrete or binder consisting flows with difficulty, which can cause problems of filling the doorframe. In addition, the filling is slow, which is even more troublesome than the volume to be filled with the concrete or binder is important. Finally, note that the manpower used to mount the door jamb must be qualified and experienced to avoid mounting mistakes. In fact, pockets of air in the door frame create points of weakness with regard to the burglar or security quality of a security door.

The document DE-A-2406041 describes a metal frame that is fixed in a bay of a wall using a synthetic foam based on polyurethane. It is therefore a door jamb of a normal door and not a door of a security door, because it must be completely filled with concrete or a binder (and not with polyurethane) in order to integrate it properly in the wall. This document recommends closing the lateral slot remaining between the surfaces of the wall and a rim of the wings of the doorframe using chopsticks. Such a rod, which has a rectangular section, bears on the surface of the wall and is applied to the outside of the doorframe against the edge of a wing. After curing the polyurethane, the rods are removed.

The document US Patent 3,375,627 also discloses a metal frame which is fixed in a bay of a wall with a synthetic foam based on polyurethane. Therefore, the doorframe described in this US document can not be described as a metal door jamb of a security door. This document also describes a sealing device which is temporarily fixed on the door frame during the injection of the polyurethane foam into the doorframe. This sealing device comprises two sealing strips which are applied outside the doorframe in the corner formed between the flange of a wing and the adjacent surface of the wall. After curing the polyurethane, the sealing device is removed.

Object of the invention

A problem underlying the present invention is to make the mounting of a metal door jamb of a security door easier and more reliable, This problem is solved by a doorframe according to claim 1. It will also be appreciated that the present The invention also proposes a method for mounting such a doorframe.

Brief description of the Figures

Fig.1:

une coupe transversale à travers un montant d'un chambranle en position montée ;

Fig.2:

une coupe transversale à travers le montant de chambranle de la Fig. 1 ;

Fig.3:

une coupe transversale à travers une traverse du chambranle ;

Fig.4:

une coupe transversale à travers une traverse du chambranle, dans laquelle on montre le remplissage du chambranle avec un entonnoir de remplissage ;

Fig.5:

une vue en perspective d'un morceau découpé de la traverse du chambranle ;

Fig.6:

une coupe transversale à travers un montant d'un chambranle, dans laquelle on montre la mise en place d'un coffrage amovible unilatéral ;

Fig.7:

une section transversale à travers le coffrage amovible de la Fig. 5 ;

Fig.8:

une coupe transversale à travers un montant d'un chambranle au niveau d'un dispositif de réglage et fixation du chambranle ;

Fig.9:

une vue en plan d'une plaque de réglage et fixation utilisée dans le dispositif de réglage et fixation du chambranle de la Fig. 7 ; et

Fig.10:

une coupe transversale à travers un montant d'un chambranle au niveau d'un dispositif de positionnement du chambranle.

Other features and characteristics of the invention will become apparent from the detailed description of some advantageous embodiments presented below, by way of illustration, with reference to the accompanying drawings. These show:

Fig.1:

a cross section through a jamb of a jamb in the mounted position;

Fig.2:

a cross-section through the jamb jamb of FIG. 1;

Fig.3:

a cross section through a crossbeam of the doorframe;

Fig.4:

a cross-section through a cross-member of the doorframe, in which the filling of the door frame is shown with a filling funnel;

Fig.5:

a perspective view of a cut-out piece of the transom of the doorframe;

Fig.6:

a transverse section through a jamb of a jamb, in which the installation of a unilateral removable formwork is shown;

Fig.7:

a cross-section through the removable formwork of FIG. 5;

Fig.8:

a cross section through a jamb of a jamb at a device for adjusting and fixing the jamb;

Fig.9:

a plan view of a setting and fixing plate used in the adjusting device and fixing the doorframe of FIG. 7; and

Fig.10:

a cross section through an amount of a doorframe at a door positioning device.

Detailed description of some advantageous embodiments of the invention

In the figures, the same references designate identical or similar elements.

The figures show details of a steel door jamb for a security door. This jamb consists, in known manner, of two vertical uprights 12 and a horizontal cross 14. The two uprights 12 and the cross member 14 are formed of folded sheets and are welded together in the workshop.

Fig. 1 shows a cross section through one of the two uprights 12 after mounting the doorframe in a bay of a wall 16 and filling the doorframe with a concrete or a binder 18. It will be noted that the reference 20 identifies the internal face and the reference 22 the outer face of the wall 16, while the reference 24 is used to locate the wall flank 16 in the bay in which is mounted the jamb. The "inner side of the door frame" is the side of the jamb located on the side of the inner face 20 of the wall 16 and "outer side of the door frame" the side of the door frame located on the side of the outer face 22 of the wall 16. A door leaf 26 is shown terminated on a door pan 28 formed by the upright 12.

Amount 12 will now be described in more detail by referring simultaneously with FIGS. 1 and 2. It comprises a central band 30 bordered on the outer side of the jamb of an outer lateral flange 32 and on the inner side of the jamb of an inner lateral wing 34. The central strip 30 faces the sidewall 26 in the bay. It is folded to form the door pan 28. The two side wings 32, 34 are parallel to each other and, in the mounted position of the doorframe, substantially parallel to the faces 20, 22 of the wall.

The outer lateral flange 32 is folded to form a flange 36, which is oriented parallel to the sidewall 24 in the direction of the opposite lateral flange 34. The reference 42 locates a reference plane, which is perpendicular to the inner lateral flange 34 and contains the end surface of the outer lateral flange 32, i.e., the outer surface of the rim 36. It will be noted that the inner side wing 34 extends a certain width "L" Beyond the reference plane 42. This means that when the outer lateral flange 32 bears against the flank 24 with the flange 36, then the inner lateral flange 34 covers the inner face 20 of the wall 16 over a width "L" around the bay receiving the doorframe. In practice, however, this recovery is always smaller than "L", since there remains a game "J" between the flange 36 and the flank 26.

The inner lateral flange 34 terminates in a flange 44, which is oriented towards the inner face 20 of the wall 16. In the following, the "shoulder" of the upright 12, the portion 46 of the internal lateral flange 34 which, in mounted position of the doorframe, covers the inner face 20 of the wall. It will be noted that the inner face of the shoulder 46 is provided with a caulking element 48, for example an elastomeric seal or a foam element as used by the ceiling plates. This caulking 48 allows the shoulder 46 of the upright 12 to match the irregularities of the inner face 20 of the wall 16 when it is pressed slightly against the inner face 20 of the wall 16. When filling the jamb, it prevents leakage a filling concrete, respectively the creep of a binder. In this context it will be noted that the pressure of the concrete or binder inside the doorframe helps to press the caulking element 48 firmly against the flange 44 and the inner face 20 of the wall 16, which ensures excellent sealing against the creep. Moreover, in the case of filling concrete, the excess water loaded with cement is largely absorbed by caulking element 48. It should be noted that the section of the caulking element 48 used is indifferent.

Transom 14 will now be described in more detail with reference to Figs. 3 and 4. Comparing FIG. 3 and FIG. 1, it can be seen that the profile of the crossmember 14 is identical to the profile of the upright 12. The crossmember 14 differs from the upright 12 essentially by the absence of the caulking 48 on the inner face of the shoulder 46 and the presence of filling 52, respectively one or more control eyes 54 in the flange 44 of the shoulder 46. Note that the filling holes 52 is preferably an oblong shape, for example a length of 10 cm for a width of 2 cm. The control sight (s) 54 are of appreciably smaller dimensions.

In FIG. 4 it can be seen that a filling funnel 56 can be connected to the filling holes 52 to inject the concrete or filling binder into the doorframe without causing contamination of the external surfaces of the doorframe. The inspection eyes 54 make it possible to visualize the filling operation and to note when the filling is finished. Using a squeegee, which has substantially the same dimensions as the outlet opening of the filling funnel 56, the concrete or binder can be pushed through the filling hole 52. This squeegee also makes it possible to closing the outlet of the filling funnel 56 and thus interrupt the flow of the concrete or binder. By pressing the squeegee more or less deeply into the outlet channel of the filling funnel 56, it is even possible to control the flow rate of the concrete or filling binder and thus to avoid, for example, problems of overflow.

To make the operation of filling the doorframe through the filling holes 52 even cleaner, the filling holes 52 can be closed with a plastic strip which is glued to the flange 44 of the shoulder 46. This plastic strip has a longitudinal access slot at the filling holes 52. The edges of this slot, which deform elastically, serve as scrapers and seal around the base of the funnel. filling 56 and close the filling hole 52 when the filling funnel 56 is removed from it. In this way, the creep and the backward rise of the binder or concrete towards the outside are prevented. It will also be noted that the inspection eyes 54 can be covered by means of a transparent plastic strip fixed on the flange 44 of the shoulder 46.

During the filling operation it is useful to lower the binder or concrete in the uprights 12 of the doorframe by tapping or vibration, made for example using an elastomer head hammer or with the aid of an impact drill equipped with an elastomeric contact piece.

In Figs. 6 and 7 show a removable formwork 60 used at the connection between the outer lateral flange 32 and the outer face 22 of the wall 16. This formwork 60 is provided with a caulking element 62, for example an element ceiling foam. As indicated by the arrows 64, the formwork 60 is pressed firmly against the first flange 36 and against the outer lateral flange 32 and held in place by a clamp or a formwork clam 66.

The mass used to fill the door frame is advantageously a thixotropic concrete with a density of 650-2200 kg / m ³ , a light concrete based on foam or a polyurethane foam. The filling can be done in different ways. Preferably, a funnel is used as described, but it would also be possible to use a mortar pump provided with a pipe with or without an injection nozzle. In any case, a jamb as presented requires less binder or concrete than the traditional jambs. It has been calculated that the gain varies between 25 and 50%.

The final finishes of the connections between the doorframe and the wall 16 can be made by silicone or putty seals 70, 72 according to traditional techniques, when the filling mass has hardened (see Fig. 1 and 3).

It will be appreciated that there is also provided a solution to the problem of being able to adjust and fix the jamb simply and reliably in the wall bay before filling it with concrete or a binder. This solution will now be described using FIGS. 8 to 10.

As the doorframe according to the invention is laid down by shoulder, it is necessary that its verticality is measured on the shoulder side. A felt or piece of closed cell polyethylene foam is placed on the ground to catch the deformations thereof. The thickness of this foam varies according to the deformations of the soil between 3-5 mm and 5-6 mm according to the catching of games needed on the ground.

In FIG. 10 shows a lower adjustment plate 80 which is welded inside the upright 12 supporting the hinges of the door on the side of the inner lateral flange 34 forming the shoulder 46. This lower adjustment plate 80 is provided. a centering hole for receiving a pin or pin 82 to be fixed prior to the ground according to the desired implantation of the doorframe. In this way, the door frame can be positioned at a point at its shoulder base on the hinge side. The height of this pin or lug is preferably about 8 to 10 mm, so that the door must normally be plugged obliquely and then straightened.

To fix the jamb to the wall and keep it in this position, by prohibiting the use of inner legs to be welded, there is proposed a device 90 for adjusting and fixing the jamb which is now described with the help of FIGS. 8 and 9. This adjustment and fixing device 90 comprises a setting and fixing plate 92 which is connected to the doorframe with the aid of a set screw 94. The head of this screw 94 is housed in an internal housing of the adjusting plate and fixing 92 so as to rotate freely about its axis. The threaded rod of the adjusting screw 94 is received in a threaded through hole 96 of a part 98 fixed to the upright 12. A hole 99 in the central band 30 of the upright 12 gives access to this threaded passage 96 and consequently to the rear end of the threaded rod of the screw 94. This rear end comprises a slot for receiving a screwdriver, respectively a hole for receiving a suitable key. The adjustment and fixing plate 92 is fixed on the wall 24 of the wall 16 by means of at least one bolt 100. This bolt 100 is sealed in the wall 16 through a slot 102 formed in the central strip 30 of the upright 12. In the adjustment and fixing plate 92, the bolt rod 100 is housed with a certain lateral clearance in a vertical oblong hole 104. Thus, the verticality of the central band 30 is adjustable through the adjusting screw 94 and the verticality of the outer lateral flange 32 is adjustable through the position of the fixing bolt 100 in its vertical oblong hole 104. The adjusting device and fastening 90 can also be used to center the doorframe in the wall bay, respectively to adjust the spacing between the shoulder 46 and the inner face 20 of the wall 16.

It should be noted that the doorframes described can be used for single or double leaf doors and also for sliding doors.

Claims (14)

1. Metal frame for security door, intended to be mounted in an opening in a wall (16) and then to be completely filled with concrete or binder (18); said wall (16) having an inner face (20) and an outer face (22) and a side (24) exposed in said opening; said frame having an inner side and an outer side and being composed of two uprights (12) and a cross member (14) connecting the two uprights (12); each of these elements of the frame comprising a central strip (30) which faces said side (24) of the wall (16) in said opening, which forms a door jamb (28) and which is bordered on the inner side by an inner lateral flange (34) and on the outer side by an outer lateral flange (32); said outer lateral flange (32) terminating in a terminal surface (36) facing the side (24) of the wall (16) in said opening;
   characterized
   in that each of said inner lateral flanges (34) extends beyond a reference plane (42) which is perpendicular to it and which contains said terminal surface (36) of the outer lateral flange (32) which is directly opposite it, in such a way that said inner lateral flanges (34) can cover an edge of the inner surface (20) of the wall (16) around said opening when the frame is positioned in said opening;
   in that at least said inner lateral flanges (34) of the two uprights (12) terminate in a lateral edge piece (44) orientated towards the inner face (20) of the wall (16); and
   in that a filling element (48) is fixed permanently in the angle formed by said lateral edge part (44) in such a way that it is compressed between the inner lateral flanges (34) of the uprights (12) and the inner face of the wall (20) when the frame is positioned in said opening.
2. Frame according to Claim 1, characterized
   in that the inner lateral flange (34) of said cross member (14) terminates in an upper edge part orientated towards the inner face (20) of the wall (16); and
   in that said upper edge part (44') comprises at least one filling aperture (52).
3. Frame according to Claim 2, characterized by a plurality of longitudinal filling apertures (52) arranged along said upper edge part (44').
4. Frame according to Claim 2 or 3, characterized in that said upper edge part (44') comprises at least one inspection port (54) for checking the filling of the frame.
5. Frame according to Claim 2, 3 or 4, characterized by a plastic strip bonded to said upper edge part (44') in such a way as to close said at least one filling aperture (52), said plastic strip having an access slot at the position of said at least one filling aperture (52).
6. Frame according to any one of Claims 1 to 5, characterized by a bottom adjustment plate (80) which is fixed to the inside of one of the two uprights (12) on the side of said inner lateral flange (34), said adjustment plate (80) comprising a centring hole for receiving a centring pin or peg (82) fixed to the ground.
7. Frame according to any one of Claims 1 to 6, characterized by an adjustment and fixing device (90) comprising an adjustment and fixing plate (92) designed to be bolted to the side (24) of the wall (16) through a hole (102) formed in said central strip (30) of the upright (12).
8. Frame according to Claim 7, characterized in that said adjustment and fixing plate (92) is connected to said upright (12) by means of an adjusting screw (94) in such a way that the distance between said central strip (30) of the upright (12) and said adjustment and fixing plate (92) can be adjusted.
9. Frame according to Claim 8, characterized in that said adjustment and fixing plate (92) comprises a vertical oblong hole (104) for bolting the plate to said side (24) of the wall (16).
10. Method for mounting a frame according to any one of Claims 1 to 9, characterized in that said filling element (48) is compressed between said inner lateral flanges (34) of the uprights (12) and said inner face (20) of the wall (16).
11. Method according to Claim 10, characterized in that the frame is filled with concrete or binder (18) through a slot between said inner lateral flange (34) of the cross member (14) and said inner face (20) of the wall (16).
12. Method according to Claim 11, using a frame according to Claim 3, characterized in that use is made of a funnel (56) with an outlet whose shape is adapted to the shape of the filling hole (52) for feeding the concrete or binder (18) into the frame.
13. Method according to Claim 10, 11 or 12, characterized in that a thixotropic concrete with a density of 650-2200 kg/m³, a lightweight foam-based concrete, or a polyurethane foam is used for filling the frame.
14. Method for mounting a frame according to Claim 6, characterized
    in that a centring pin or peg (82) is fixed to the ground in accordance with the desired installation of the frame; and
    in that said bottom adjusting plate (80) of the upright (12) is fitted on to said pin or peg (82).

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