IT202100005642A1 - Facilitated opening of the entrance doors to civilian homes in the event of an earthquake - Google Patents

Description

Patent application: automatic release and easy opening of the entrance doors to civilian homes in the event of an earthquake.

Description

The present invention relates to the construction of an armored door equipped with an easy opening system by automatically unlocking the door from the bolts consisting of electro-pistons which, in the event of an earthquake, receive an electric impulse from a seismic detector.

The context of reference

The Italian territory? characterized by high seismic risk areas where old buildings persist, built according to old construction methods and therefore not suitable for the recent seismic risk prevention standards. As we have unfortunately been able to see in recent years, even earthquakes not of great magnitude? with partial collapses they involve the deformation of the frames and counter frames of the doors, preventing them from opening and the possibility? escape of the people who remain trapped in? building, with difficulty? intervention by the first aid teams.

Legend Drawing fig.1, fig.2, fig.3

1. Subframe

2. Seismic sensor

3. Bearing hinges

4. Primary port

5. Opening handle

6. Secondary leaf

7. Normally closed electric locks controlled with a centralized impulse from the seismic sensor

8. Solid protective frame with safety door

9. Lock

10. Bronze loaded Delrin platters

The construction features of the armored door designed

The subframe? made up of a steel parallelogram (1) fixed on carpentry profiles walled in the door opening which increase the compressive strength of the architrave.

The door, with a single hinged leaf, is made with the same materials as a typical armored door, i.e. with a steel frame, internal panels in press-bent galvanized sheet metal and wooden cover panels.

The door? made up of two ports that we call primary and secondary, with the primary (4) containing the secondary (6)

The secondary door has a flared frame - towards the outside of the leaf - complementary to the frame of the primary door (figure 3) which, once free from the retention system, tends to exit naturally from the door in the event of pressure from an undulatory or tremors primary.

The interstitial space between the two doors? plated with plates in bronze-charged Delrin (10), a viscous material which, with the help of the geometry of the labyrinths, prevents the two doors from fitting together.

On the external part of the leaf, along the perimeter and welded to the steel frame of the secondary door, is provided a reinforcement frame (8) which avoids the possibility? of forcing or tampering in case of break-in attempts.

In normal use the secondary door ? made integral with the primary by means of eight normally closed electric locks (7) which are activated thanks to the centralized command of an electric impulse generated by a seismic sensor (2) installed on an internal wall other than the one where the door stands so that it is not possible to tamper with it from the outside. The sensor-electropiston system ? powered by the mains and has a buffer battery which guarantees operation even in the event of a power cut.

In normal use as an armored door, the door opens by means of hinges with bearings (3) and has, like the classic doors, an internal opening handle (5), a push-button safety lock, and an internal opening handle (5). locking points (9), anti-tear bolts and defender.

Claims (3)

Patent application: automatic release and easy opening of the entrance doors to civilian homes in the event of an earthquake. Claims 1. Armored door consisting of a steel counterframe, a primary door hinged by bearing hinges on the counterframe which contains a secondary door with flared and complementary frames, a system of eight electro-pistons, plates in Derlin loaded with bronze in the gap of the two primary and secondary door frames, a perimeter reinforcement frame welded to the secondary door frame, a seismic sensor, an opening handle and a safety lock. 2. Armored door as per claim (1) whose frames of the two primary and secondary doors are flared outwards and complementary to each other so that in the event of compression from a seismic event, the forces generated exert a uniform thrust towards the exit exterior of the property. The release of the secondary door from its seat? facilitated by the plates in Derlin loaded with bronze installed in the interstice of the two frames. 3. Armored door as per the two previous claims in which the secondary door is integral with the primary thanks to eight electric locks connected via electric cables to a seismic sensor positioned on a masonry wall different from the one on which the door stands in order to avoid possible tampering from the outside. In the event of a seismic event detected, the sensor produces a centralized electric impulse which it sends simultaneously to the eight electro-pistons, instantly opening the electric circuit and thus unlocking the electric lock. the secondary door from the primary that at that point ? free to exit its seat in a natural way both by compression following the seismic event and possibly by slight manual push from inside. The seismic electropiston sensor circuit? connected to the electricity grid of the building and to a buffer battery which compensates for possible voltage interruptions in the event of an earthquake.