GB2158869A

GB2158869A - Armoured door fastening

Info

Publication number: GB2158869A
Application number: GB08511373A
Authority: GB
Inventors: Lopez Ignacio Ruiz
Original assignee: Individual
Current assignee: Individual
Priority date: 1984-05-17
Filing date: 1985-05-03
Publication date: 1985-11-20
Also published as: DE3512856C2; DE3512856A1; ES8504317A1; GB2158869B; IT1184986B; FR2564514A1; FR2564514B1; GB8511373D0; ES532581A0; IT8520707A0

Abstract

A door provided along its free edge with a flat steel bar 22 or bars 3, 4 movable in bearings 9, 10; 11, 12 from an unlocked position to a locked position in which it engages in a slot in the door frame, the bar 22 or bars 3, 4 being movable by a rod 14, 25 by a lock 15 and retained in the locked position by a second lock 18 or by a member 26 provided on the main lock. <IMAGE>

Description

SPECIFICATION A steel-clad or armoured door The present invention relates to steel-clad and/or armoured doors.

Many varied types of steel-clad and armoured doors, designed to impede violent access into the premises protected by the doors, are on the market. In order to achieve the aforesaid security purpose, multiple locking systems have been developed which, coupled with the strength of the door since it is made of steel plates, provide the desired security to the unit. Normally, this type of door locking includes one or more rods secured to the door which, actuated from the lock, are inserted into holes provided in one or more sides of the door frame.

In spite of the fact that these rods are made of materials that provide a high resistance index, the system as a whole has drawbacks which have not been resolved up to now, resulting on the one hand in the fact that the spacing between said rods permits the insertion of means for prizing the door open, and on the other the locks used are actuated by keys, the reproduction of which is easy to effect by an expert.

Another type of door is known in which the rods have been replaced by one or more flat bars, of an adequate thickness, arranged guillotine style, inserted in the door and projecting outwardly through their edges when actuated by means of the appropriate lock. However, in the hitherto known systems, a large amount of mechanisms are used, such as rods, levers, etc for actuation of the flat bars, which makes the finished product costly, apart from increasing the risk of jammings or failures in such systems.

According to the present invention there is provided a steel-clad or armoured door provided with means for securing the door to the fixed door frame, in its closed position, said securing means including a flat steel bar extending along the front edge of said door, said bar being of one single piece or divided into two parts consisting of an upper part and a lower part interconnected at an intermediate length position by means of a steel piece to which is secured a rod actuable from the main lock of the door so as to effect shifting of said bar, said bar being provided at each end with upper and lower parts which extend into the interior of the door, these parts being slidably carried by bearings which constitute guide means for guiding the bar when shifted, said bar being receivable in a recess provided in the door frame.

The provision of adjustable bolts welded to a bar secured to the door, the simplification and perfect control of the actuation means and the provision of a second safety lock that blocks the guillotine in its lock position, provide the door with some inherent characteristics of maximum security, without implying any additional cost whatsoever to the finished product.

The door preferably consists of a frame to which are secured, preferably by welding, the steel plates that make up both sides of the door. The frame is provided as commonly used, with a series of traverse beams which made the unit rigid.

The bar, which extends down the front edge of the door, may be of one single piece, or it may preferably be divided into two parts, with the ends of each one of these parts projecting longitudinally into the interior of the door. The projections, in the case of the bar being formed in two pieces, comprise two limb parts of different length, so that the longest ones occupy end positions, and the shortest adjacent positions. Both parts of the bar are interclamped by a connecting steel piece secured to the aforesaid shortest projections, with a push rod actuated by a lock extending from said steel piece. From this same lock extends a second stem, parallel to the former, whereby the door is provided with a latch for its normal use.As to the single piece bar, the operation is similar to that herein before described, with the difference that the latch is shifted on a plane parallel to the former.

The longer projections of the bar are housed between superimposed running gears, or bearings, in order to facilitate sliding, secured to one side of the door. In this manner, a smooth and effortless sliding of the guillotine is carried out.

At the opposite side of the door is provided a fixed bar, with a trimmer on the door to which are welded the hinge bolts. The aforesaid fixed bar is secured to the trimmer by means of threaded screws, and carries out its meshing in an indentical piece on which the movable bar meshes.

On the other hand, the door may also be provided with a second lock so that, once the movable bar has been shifted to the locking position, the latch of this second lock will rest against the back edge of said bar, making it impossible that it be actuated even with the correct key, unless the aforesaid second lock is previously unlocked.

The door will also preferably be provided with adjustable bolts so that the same is supported by all of them and the load evenly distributed.

In a more simple embodiment of the door, the movable bar may be of one single piece, actuated by means of rods and provided with a single lock which has a double duty as normal lock and blocking the guillotine in its locked position.

According to another characteristic of the invention, the same plate that makes up the external face of the door could be prolonged to form the back edge of the same. In this manner, the possibility that the side plates may be ripped off by any means is avoided.

One other characteristic of the invention consists in the fact that the interior of the door may contain an appropriate filler material, which acts as an anti-fire medium and also as noise dampener.

An embodiment of the invention will now be described, by way of an example, with reference to the accompanying drawings, in which: Figure 1 is a schematic elevational view of one embodiment of a door according to the present invention, as well as a detailed sectional view of the formation of the back edge of the same; Figure 2 is a schematic elevational view of another embodiment of a door according to the present invention; Figure 3 is a sectional view of the door frame; Figure 4 is a detailed view of one of the adjustable bolts used with the door of the invention; and Figure 5 is a sectional view taken along the line A-A of Figures 1 and 2.

Referring initially to Figure 1 of the drawings, there is shown therein a schematic elevational view of a door according to the present invention. The door includes a rectangular frame 1 provided with a convenient number of traverse beams 2 which rigidify the door unit. In the front part is provided a flat steel bar or guillotine which may be of one single piece or divided into two parts 3 and 4, each of which has a long projection 5 and 6, and a short projection 7 and 8, respectively.

All of the aforesaid projections 5, 6, 7 and 8 extend toward the interior of the door. Moreover, the longer projections 5 and 6 occupy end positions, in the proximities of the upper and lower edges of the door, whereas the shorter projections 7 and 8 occupy adjacent positions at an intermediate height position of the door. This flat bar or guillotine as stated above, may be of one single piece, in which case the projections 5 and 6 are actuated in a manner similar to the divided flat bar or guillotine.

Conveniently secured to the door are at least two upper pairs of roller bearings 9, 9'; 10, 10' and, at least, two lower pairs of roller bearings 11, 11'; 12, 12', preferably caged ball bearings, in between which are received respectively the long projections 5 and 6 of the two parts of the flat bar or guillotine, acting as support for the latter and as a guide in the forward and backward movement of said flat bar or guillotine.

As to the flat bar or guillotine formed in two parts, the upper part 3 and the lower part 4 are interconnected by means of a connecting steel piece 13, which is preferably secured by screws or rivets to the short projections 7 and 8. From this steel piece 1 3 extends a push rod 14, actuated by means of a lock 1 5. From the lock 1 5 extends a second rod 1 6 which extends parallel to the push rod 14, and which is designed to operate a latch 1 7 for the normal use of the door.

As for the flat bar or guillotine formed in one single piece, it is actuated in a similar manner by the push rod 14 being connected directly to the flat bar or guillotine and the rod 1 6 extending parallel to the push rod 14, actuating the latch 1 7 that is situated at a different height on the door frame.

A second lock 18, or blocking lock is provided at the proximities of the position occupied by any of the parts of the flat bar or guillotine, close to the front edge of the door, designed to immobilise said flat bar or guillotine when this is in its locked position.

The back edge of the door is preferably provided with a trimmer 19, which is called a hinge bolt carrier, since said hinge bolts 20 will be preferably welded to the same, permitting these to be chrome plated pr brass plated, and also the fixed flat bar or guillotine, which make up one single unit as described in the Figure. The unit is completed with various side steel sheets, not shown herein, the viewed surfaces of which will be provided with the appropriate material with respect to the finish desired (wood strips, cushioned, leather, etc).

In relation to the foregoing, the form of utilisation of the door is clearly understood.

Thus, during the normal use of the same, locking is carried out by means of the latch 17, and its opening by means of the lock 15, which is accessible to the user both from inside and outside the premises. When it is desired to use the flat bar or guillotine locking system, it will be actuated from the same lock 15, and the rod 14 will push against the steel piece 1 3 and the latter on both parts 3 and 4 of the flat bar or guillotine, guided by the bearings 9 and 1 2. Once the flat bar or guillotine is shifted, the blocking lock 18, likewise accessible from inside and outside, will be actuated, if desired, the latch of which will be positioned against the internal edge of said flat bar or guillotine, preventing this from being moved back.

As to opening of the door, the opposite operational manner will apply, unlocking in the first place the blocking lock 18.

The aforesaid locks 1 5 and 1 8 may be actuated by means of keys or by means of probes, or by any other system which may be deemed convenient.

The locks will preferably be situated on the doorknob and concealed by means of a laterally shiftable sheet, or in any other convenient place. On the inside, these may be provided with knobs or with any other appropriate means for their easier and faster operation.

Referring to Figure 1, there is also shown a detail of the lateral steel plate 21 of the door, bent backwardly to form the correSponding edge of said door. This construction form has the additional advantage in that it avoids the possibility that said plate may be ripped from the door by any means.

Figure 2 illustrates a schematic representation of the simplest embodiment of a door according to the present invention. The main differences compared with the embodiment shown in Figure 1 consist in that the flat bar or guillotine 22 is formed in one single piece, this being actuated by means of rods 23 and using a single lock 24 as actuation and blocking means of the flat bar or guillotine 22.

Consequently, said lock 24 has a latch (or bolt) 25 for the normal use of the door and a second latch 26 f or securing or blocking of the flat bar or guillotine 22 in its locking position, as hereinbefore described.

The rest of the description of Figure 1 is applicable to Figure 2.

Any of the embodiments adopted for the door are liable to contain in their interior, as hereinbefore described, a filler material. This material will be of the anti-fire type and, moreover, it will be a sound insulator. With this, the door wiil provide a barrier against any fire that might break out, either inside or outside the premises, and in the case of its use in dwellings, it will moreover provide sound insulation for the people living in them.

Referring to Figure 3, there is shown a preferred embodiment of the door frame 27.

The frame 27 is formed of a steel section, obtained starting from a steel strip of appropriate thickness, conveniently bent inwardly, and in which may be provided with a longitudinal recess 28 and an end overlap 29 obtained by bending. The relative position of the hinge bolts is shown at 20.

As illustrated in the aforesaid Figure, the lowering of the door is carried out with respect to the position occuplied by the bolts 20, so that the exterior edges of the borders of the door are housed in angle A of the frame 27. Consequently, the overlap 29 of the frame 27 is peripherally superimposed on the external lateral surface of the door, preventing the possibility of inserting levers or other objects designed to force said open door. The flat bar or guillotine is inserted when it is in the locking position in the interior of the recess 28 of said frame 27.

Referring to Figure 4, shown therein is an illustrative view of a preferred hinge bolt 20 for use with the door of the invention. Said hinge bolt 20 has two parts, an upper part 30 attachable solidly to the door trimmer 19, preferably by welding, and a lower part 31 attachable solidly to the frame, also preferably by welding. In between both is wedged a steel ball 32 and threaded to the upper part 30, a screw 33 actuable from the outside.

The lower end of the threaded screw 33 rests on the steel ball 32. Thus, adjusting the position of said screw 33, with respect to the relative position adopted by both parts of each bolt 20, the effective support of its lower end on the ball 32 connected therewith, is obtained, whereby the weight of the door is evenly distributed on all the support bolts.

This provides a greater effectiveness to the opening and closing movements of the door.

Although certain preferred embodiments of the invention have been herein described in order to illustrate the principles of the invention, it will be understood that many variations may be effected, such as the number and type of hinge bolts used, the form of the section of the frame, the type of locks used, as well as the form, size or fabrication materials of the unit or of its parts, without departing from the scope of the appended

Claims

claims. CLAIMS

1. A steel-clad or armoured door provided with means for securing the door to the fixed door frame, in its closed position, said securing means including a flat steel bar extending along the front edge of said door, said bar being of one single piece or divided into two parts consisting of an upper part and a lower part interconnected at an intermediate length position by means of a steel piece to which is secured a rod actuable from the main lock of the door so as to eff ect shifting of said bar, said bar being provided at each end with upper and lower parts which extend into the interior of the door, these parts being slidably carried by bearings which constitute guide means for guiding the bar when shifted, said bar being receivable in a recess provided in the door frame.

2. A door as claimed in claim 1, provided with a second bar secured at the opposite side of the door, which is inserted in the door frame when said door rotates on its hinge bolts to the closed position.

3. A door as claimed in claim 1 or claim 2, in which the aforesaid main lock further includes a normal locking latch for the door, actuable therefrom by means of a rod that extends parallel to the actuation rod of the bar.

4. A door as claimed in claim 1, or claim 2, or claim 3, in which a blocking lock for the bar is also provided, the latch of which is disposed against the internal edge of the bar in the locking position, making the opening of the door impossible unless said blocking lock is unlocked.

5. A door as claimed in claim 1, in which the bar is formed of one single piece, actuated by means of appropriate rods, and with a single lock provided with a double latch for normal use of the door and securing of the.

bar in its locking position.

6. A door as claimed in any one of claims 1 to 5, in which the hinge bolts connecting the door to the frame are welded to the frame of the trimmer of the fixed bar of the door, said hinge bolts having height adjustment means consisting preferably of screw-threaded members which rest on steel balls and the adjustment of which permits the door to be correctly positioned, resting simultaneously on all the bolts with a uniform distribution of the load.

7. A door as claimed in any one of claims 1 to 6, in which the interior of the door is provided with a product which is fire-proof and sound absorbing.

8. A steel-clad or armoured door substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.