Device preventing lifting of doors

0001The present invention relates to an anti-lift device for an exterior door to door collection having an inner face oriented towards the inside of a building and a oriented outer face outwardly of said building, said door with hinges which consist of a first and a second metal part, the first metal piece being disposed above the second metal part, the two parts being more isolated one into the other and joined along a common axis around which one of them at least is rotatable freely.

0002Exterior doors give access to the inside of a building. They should contribute both to security that comfort habitations. Exterior doors are manufactured to perform several functions: allowing the passage of persons, objects, air, close the window to people, weather, noise, dust. Exterior doors must also have a security sufficient to break-ins.

0003Generally, the external doors are fitted with a Burglar lock. However, to avoid the unhinging of these doors, manufacturers provide bitting that fit in the built. A disadvantage is that it must break the frame in several places to allow the installation of doors comprising such bitting. Of Moreover, the security bolts device is often faulted because it can be sawn and burglary is possible.

0004The purpose of the present invention is to overcome these disadvantages and for this it provides an anti-lift device comprises a first planar portion made of rigid material fixed vertically along the first metal part and also fixed along a door frame and also a second part in flat rigid which is attached vertically along the second metal workpiece said flat portions of rigid material covering at least a portion of the outer face and the inner face of the door and the two planar portions rigid material being bent so as to come to fit one inside the other when the door is in the closed position.

0005This way, in case of attempt of unhinging outer door provided with the anti-lift device of the present invention, this does not result for the following reasons:

0006When an individual, trying to unhinge the door, introduced a tool between the frame and the door with the intention to lift the hinges or cut the hinges of the door, it underscores the fold formed by the planar portions of rigid material fitted one into the other instead of dismiss, making impossible to access the hinges and therefore makes burglary impossible if the lock is also resistant burglary.

0007Other embodiments of the device according to the invention are indicated in the appended claims.

0008Further details and features of the invention will emerge from the description given below, non-limiting, and with reference to accompanying drawings.<sl><li>Fig. 1 shows a cross section of a door equipped with an embodiment of the anti-lift device the invention.</li><li>Fig. 2 shows a cross section of a door equipped with an embodiment of the anti-lift device the invention comprising a first seal.</li><li>Fig. 3 and Fig. 4 show a cross-sectional a door provided with an embodiment of the security bolts device of the invention comprising a first and a second seal. </li><li>Fig. 5 shows a cross section of a door equipped with an embodiment of the anti-lift device the invention comprising a second seal.</li></sl>

0009Fig. 1 illustrates an anti-lift device according to the present invention wherein the first and the second planar portion rigid material fit into one another when the door is in closed position.

0010In a preferred embodiment, the device security bolts 1 is composed of a first planar portion made of rigid material 2 and a second planar portion of rigid material 3 comprising a 4 first fold and a second fold 5 with acute angle. The second 5 fold occurs in a direction opposite to that of the first ply and the 4 two planar portions of rigid material fit at the first ply 4 and at the second ply 5.

0011The first planar portion 2 is attached along the frame 6 and it is also fixed to the hinges 7, preferably to the portion top thereof and is also attached to at least a portion the outer face 8 and the inner face 9 of the door 10.

0012The second plane part 3 is also attached to the hinges 7, preferably at the lower part thereof and is also fixed on at least a portion of the outer surface 8 and inner surface 9 of the 10 door.

0013outer side by 8 denotes the gate 10, the side which is facing outside the building as opposed to the inner face 9 of the door 10 that it is oriented toward the interior of the building. Of this way, when the door 10 is closed, the planar portions 2, 3 fit one inside the other in a double fold 4, 5 which, preferably, a cross-sectional shape of "Z". Applying a pressure on this double ply 4, 5 only the narrow and as double ply 4, 5 is located between the frame 6 and the gate 10, it becomes impossible to access the hinges 7, whatever the instrument used to try to unhinge door with such an anti-lift device 1.

0014In a preferred embodiment, the first and second rigid material planar portion cover the entire outer face and the entire inner face of the door. The device of the invention is the door itself, which enables to manufacture at low cost doors with excellent protection against break-ins without there add expensive separate devices.

0015In order to improve the housing of comfort on which a door provided with this anti-lift device of the invention must be installed, it is planned to add seals.

0016Fig. 2 illustrates an embodiment of the security bolts device 1 of the invention wherein a first seal 11 is provided. The latter is preferably disposed along the frame 6, between the hinges 7 and the two flat parts 2, 3. Thus, when the door 10 is in position closing, there is no free space between the flat parts 2, 3 and the hinges 7 since this space is occupied by a seal. This seal 11 Besides being useful for improving the sealing of the door, is a factor of additional security.

0017Fig. 4 and Fig. 5 illustrate embodiments of the anti-dégondagel device of the invention wherein two joints 11, 12 are provided. Indeed, in addition to the first seal 11 as described above, a second seal 12 is disposed along the jamb when the door 10 is rest in the closed position, which further increases the qualities sealing of said door 10. These seals 11, 12 can, as shown Fig. 5 being surrounded by a metal layer 13 so as to be protected.

0018The invention also provides a door 10 provided unhinging device 1 as described in the present invention.

0019Said door being an exterior door to recovery which opening direction is indifferent. Indeed, the anti-lift device 1 of the invention is adaptable both doors 10 opening outwardly the building as is the norm in some countries such as Japan, on exterior doors opening to the inside of the building as is the case in Europe. This anti-lift device 1 may be made of any rigid material for manufacturing a door 10 such as metals, wood and PVC. Thus, it is easy to make doors with security bolts that device 1 with a door trim varied.