FR2870284A1 - Safety device for internal and/or external lock of building e.g. dwelling, has fire curtain going down immediately from drum when fire is detected, and anti-intrusion curtain rolled up either by presence sensor or manipulation of button - Google Patents

Abstract

The device has a fire curtain (20) rolled around a drum (22) to go down immediately from the drum by rotation of the drum, when a fire sensor detects fire. An anti-intrusion curtain (30) is rolled up by activation of a motor of the drum, either automatically through an infrared presence sensor, or by manipulation of button placed on a control, when a person wants to enter a building accessible by a lock (12). An independent claim is also included for an internal or external access of a building such as a lock comprising a safety device.

Description

SECURITY DEVICE FOR INTERNAL EXTERNAL ACCESS

  The invention relates to a security device for external and / or internal building access, and an access equipped with such a device.

  In the field of fire safety for a building such as a warehouse, a dwelling, a factory, a hangar, a hall, a shop, a shopping mall or an airport, it is common to provide external access and / or or internal of said building a device called firewall or fire. Typically, these fire prevention devices are designed to withstand flames and heat of a certain intensity for a predetermined period of time in particular to be approved and to be in compliance with certain recognized standards. For this, it is common to use doors of various types, including casement with one or more leaves with, for example, an electromagnetic closure. It is also known to use roll-type sectoral doors, also called rolling shutters or curtains, to protect certain areas in order to isolate them from others in case of fire to prevent the spread of flames, heat, or even smoke. These devices must be able to be closed quickly and ensure the required isolation of the area as long as possible before firefighters intervene to extinguish the fire. They are therefore designed to withstand fire to prevent its spread, without degrading, without opening and without releasing into the air particles or toxic fumes in case of fire.

  Another need exists, in terms of security of access to a building as mentioned above, to prevent illegal entry into said building, for example to perpetrate a burglary or degrade equipment. In order to obtain also their homologation, the anti-extrusion devices used are provided to be able to withstand certain predetermined constraints such as a driving force (by ram or the like), a lateral spacing force (per crowbar or equivalent material ), a drilling force, in particular a closure device such as a lock, or a lifting force to force its opening.

  To quantify the resistance, and therefore the effectiveness of the anti-extrusion device, the stress may for example be a resistance to depression or uplift for a certain period. The longer the duration and / or the stress applied, the more the curtain is classified as resistant according to a scale determined according to standards in force.

  However, until now, it is customary to use the fire curtains described above as an anti-intrusion device. By definition, and according to fire regulations, a fire curtain is opened in its standard state of rest and can be closed quickly, as tightly as possible, only in case of emergency to prevent the spread of fire. .

  On the contrary, an anti-intrusion device is a device which, by function, remains closed at rest and which is open when it is desirable to access a particular area of the building. Using a fire curtain as an anti-intrusion curtain, ie a normally open curtain, would violate the regulations in terms of security of access. Moreover, the use of a swing door fire only also does not effectively fight against a possible intrusion for the reasons mentioned above.

  To solve these problems, the invention proposes to combine the fire and anti-intrusion functions in a single device, each part of which is provided to meet the functional criterion and the standards specific to it, in order to comply with the regulations in force in the field of safety and fire protection.

  More specifically, the invention relates to a safety device for an external access and / or internal building comprising at least one fire curtain remaining open in the normal rest position, and at least one anti-intrusion curtain remaining closed in normal position of rest.

  Fire curtain means any type of curtain that can prevent the spread of flames and / or smoke, such as firewalls, firewalls, firewalls, etc. According to preferred embodiments of the present invention: the fire curtain and / or the anti-intrusion curtain is (are) of the rolling type, articulated (s) each around a drum; - The curtains are each equipped with an independent control for their operation; - Advantageously, the device further comprises a fire detector connected to the control of the fire curtain; - The fire curtain is preferably made of flexible material and the burglar-proof curtain is made of a more rigid material - advantageously, the fire curtain comprises a flexible fabric made of fabric such as a composite fiber-based glass fiber and stainless steel wire, and the anti-intrusion curtain comprises a plurality of transverse blades connected parallel to each other and made of metal such as steel or aluminum; the device also comprises a first pair of lateral guiding rails for the substantially vertical sliding of the fire curtain, and a second pair of lateral guiding rails for the substantially vertical sliding of the anti-intrusion curtain, said pairs of slides being substantially parallel to each other; - Preferably, the guide rails of the fire curtain have a general U-shaped profile and the guide rails of the anti-intrusion curtain are based on the guide rails of the fire curtain and have a general profile in the form of L; - Advantageously, the first pair of guide rails comprises narrow lips disposed on either side of the fire curtain; - At least one pair of balls is provided on each slide of the first pair of guide rails, said balls being arranged vis-à-vis on both sides of the fire curtain to guide its vertical movement; - The device further comprises a common chest to the two curtains having a plurality of walls for protecting said curtains from the weather in their raised position; - The fire curtain has a ballast at the bottom to facilitate its descent by gravity, especially in case of emergency; - Advantageously, the ballast consists of a folded sheet pinching the bottom of the fire curtain and inside which is a flat iron bar extending over substantially the entire width of said fire curtain; - Preferably, the folded sheet is fixed at a lower hem of the fire curtain and a rod is slid into said hem to prevent said folded sheet from slipping.

  The present invention also relates to an internal and / or external building access, such as an airlock, equipped with a safety device as described.

  Other features, details and advantages of the invention will become apparent on reading the description which follows, made with reference to the appended drawings given by way of example and which represent respectively: FIG. 1, a front view of FIG. a building access, such as an airport hangar, provided with a safety device according to the invention; FIG. 2, a sectional view along the line AA of the device of FIG. 1, FIG. 3, a sectional view along the line BB of the device of FIG. 1, - FIG. 4, a detail view of FIG. 3, and - FIG. 5, a detail view of FIG.

  FIG. 1 represents, in an elevational view, a safety device 10 according to the present invention intended for an access 12 (see FIG. 2) of a building (not represented), in particular a lock 12 of luggage of a warehouse of airport leading for example to a transport treadmill. This type of access lock 12 must be secured both to prevent the theft of luggage and to prevent the spread of a fire in the event of a fire. For this, the safety device 10 of the present invention provides protection against both intruder and flame arrestor, as described below in connection with Figures 1 to 4.

  Thus, the security device 10 comprises a box 15 comprising, looking from the outside, a right side wall 15a, a left side wall 15b, an (outer) front wall 15c, a (inner) back wall 15d, a upper wall 15e and a bottom wall 15f. The upper wall 15e is shallower than the top wall 15d to let down and mount rolling curtains 20 and 30 while protecting them sufficiently from the weather. The box 15 is fixed laterally to the concrete walls 13a and 13b of the lock 12 and incidentally, at its dorsal wall 15c, to a lintel 13c via metal supports 16.

  The security device 10 also comprises, mounted inside the trunk 15, a flame retardant curtain 20, or firewall, located on the inside of the airlock 12, and an anti-intrusion curtain 30 located on the outside of the airlock 12.

  The flame arrestor 20 is constituted by a flexible fabric 21 wound around a drum 22, or rotation shaft, mounted transversely over substantially the entire width of the box 15. The flexible fabric 21 is glued to said drum 22 at from its upper end 21a. In the present case, the flexible fabric 21 is made of fiberglass and stainless steel composite fabric, the various strips forming the flexible fabric 21 being connected by stitching to the stainless steel wire.

  At the bottom of the flame curtain 20 is a ballast bar 25 facilitating the descent of said curtain in case of emergency. The ball bar 25 comprises a folded sheet 25a having substantially the profile of a bottle with a flared shape at the base and a narrowed neck shape at its connection with the flexible fabric 21, as can be seen in more detail on 5. The folded sheet 25a is screwed to pinch the bottom of the flexible fabric 21 just above a lower hem 21b inside which is slid a rod 21c to prevent the folded sheet 25a to go down by slipping. A flat iron bar 25b, constituting the actual ballast, is disposed inside the folded sheet 25a, over substantially the entire width of the flexible fabric 21.

  Flame barrier 20 is adapted to slide vertically up and down and up and down along a first pair of side rails 40 attached to concrete walls 13a and 13b, for example by screwing. These slides 40, made of folded sheet, each have a U-shaped profile very closed with lips 42 coming inwardly to surround the lateral edges of the cloth 21 of the flame curtain 20. The rod 21c is provided with two lateral rings 21d providing lateral guidance of the flexible fabric 21 cooperating each for example with vertical tubes 44. At least two pairs of balls 45 are also associated with each slide 40, a pair at the top (shown in Figure 5) and a pair at half height, for guiding the flexible curtain 21. Each pair of balls 45 comprises two balls disposed opposite each other on the one side and the other of the flexible fabric 21.

  The drum 22 is a simple horizontal steel tube, guided at its two ends for example by half-axes (not shown) welded to the side walls 15a and 15b of the box 15, and driven by an electric motor (not shown) of the type known connected to an individual order 28.

  According to a particular embodiment, the flame retardant curtain comprises a flexible fabric 21 of 2850 mm wide by 3250 mm high and 0.5 mm thick, divided into three strips of 675 mm, 1500 mm and 675 mm. sewn with 600 mm overlap to 0.4 mm diameter stainless steel wire. The ballast bar is 2600 mm wide with two symmetrical folded sheet metal profiles of 2 mm thickness assembled by 5 M6 screws and a total weighting (folded sheet + screw + flat iron bar) a weight of about 4.160 kg. The slides are 3000 mm high with a footprint of 76 x 105 mm. The balls 45 are made of steel and have a diameter of 25 mm. They are fixed to the sheet metal lips 2 mm thick by M6 bolts. The rings 21d have an internal diameter of 24 mm and slide along tubes 44 of diameter 20 mm fixed to the masonry by M10 studs. The drum is a galvanized steel tube measuring 2870 mm wide, with an outer diameter of 70 mm and a material thickness of 1.5 mm.

  A known type of fire sensor 29 is fixed to the wall of the building inside and / or outside the lock chamber 12. It is connected to the control 28 of the flame arrestor 20 by any type of known connection, preferably wireless such as a radio link to prevent possible damage to cables in case of fire.

  The anti-intrusion curtain 30 is constituted by a succession of transverse metal blades 31, for example aluminum, stapled to each other longitudinally. The curtain 30 is wrapped around a drum 32 and slides along a second pair of side rails 50 having a general L-shaped profile and attached to the side posts 13a and 13b and the first pair of slides 40. Each slide 50 nonetheless intrinsically presents a portion 52 having a U-shaped profile to surround the anti-intrusion curtain 30 and guide it vertically. The drum 32 is connected to an electric motor (not shown) of known type which is itself connected to an individual control 38.

  According to a particular embodiment, the metal anti-extrusion curtain 30 measures 2850 mm wide by 2940 mm high. It consists of 28 stapled blades with a pitch of 105 mm, each consisting of a 1.1 mm thick galvanized steel sheet. The drum 32 is 2820 mm wide with an outer diameter of 101 mm and a material thickness of 3.6 mm. The slides 50 measure 2700 mm in height for a sheet thickness of 2 mm.

  The operation of the building access security device 10 in accordance with the present invention is as follows. In its raised rest position, the flame curtain 20 is wrapped around its drum 22, hidden by the chest 15. When a fire is detected by the sensor 29, the flexible flame arrestor 20 immediately descends automatically by rotation of the drum 22. The descent is accelerated by the ballast 25. In the case where the fire sensor 29 has not been triggered, the motor of the drum 22 can be operated preventively by the control 28 to lower the flame curtain 20 .

  Regarding the intruder curtain 30, it is lowered in the normal position of rest, unlike the flame curtain 20. When it is necessary to enter the building or to go in an area accessible through the airlock 12, the anti-intrusion curtain 30 is then raised by starting the drum motor 32, either automatically via a known type of presence sensor (not shown), or by manipulation of a button placed on the control 38. The presence sensor, for example by infrared, may for example be placed on one side of the lock for security reasons to allow only an exit or exit of the building. A manual control 39 is also provided for raising the intruder curtain 30 manually if there is a power failure of the engine or if the fire has degraded the drum 32, its motor or the control 38 of the anti-intrusion curtain 30.

  It should be clearly understood, however, that the detailed description, given solely by way of illustration of the subject of the invention, does not in any way constitute a limitation, the technical equivalents also being included in the scope of the present invention.

  Thus, the safety device of the present invention can be used in any building where a secure access in terms of intrusion and fire protection is useful, even necessary, especially the locks of road transport warehouses, the entrances of buildings, factories or other industrial buildings, interior doors of airport hall sensitive areas or any other type of industrial buildings, hospitals, schools, universities, private homes, etc. The materials used are only mentioned as non-limiting examples, other metals may be chosen for the anti-intrusion curtain as well as other plastics or metals may be used for the fire curtain.

  The anti-intrusion curtain can be realized in the form of a horizontally segmented door mounted on a rotating drum or a winding grid (semi-rigid perforated articulated lattice).

  The trunk is not essential, it is a finishing accessory, it mainly protects the curtains from the weather in their raised position.

Claims (15)

  1. Device (10) for security access (12) external and / or internal building comprising at least one fire curtain (20) remaining open in normal rest position, and at least one anti-intrusion curtain (30). ) remaining closed in the normal rest position.   2. Device according to claim 1, wherein the fire curtain (20) and / or the anti-intrusion curtain (30) is (are) of the rolling type, articulated (s) each around a drum (22; 32) .   3. Device according to claim 1 or 2, wherein the curtains (20; 30) are each provided with a control (28; 38) independent for their operation.   4. Device according to claim 3, characterized in that it further comprises a fire detector (29) connected to the control (28) of the fire curtain (20).   5. Device according to any one of the preceding claims, wherein the fire curtain (20) is of flexible material and the anti-intrusion curtain is more rigid material.   6. Device according to claim 5, wherein the fire curtain (20) comprises a flexible fabric (21) made of fabric such as fiberglass composite fiber and stainless steel son, and the curtain anti intrusion (30) comprises a plurality of transverse blades (31) connected parallel to each other and made of metal such as steel or aluminum.   7. Device according to any one of the preceding claims, characterized in that it further comprises a first pair of guide rails (40) lateral for the substantially vertical sliding of the fire curtain (20), and a second pair guide rails (50) for substantially vertical sliding of the anti-intrusion curtain (30), said pairs of rails (40; 50) being substantially parallel to each other.   8. Device according to claim 7, wherein the guide rails (40) of the fire curtain (20) have a general U-shaped profile and the guide rails (50) of the anti-intrusion curtain (30) s presses the guiding rails (40) of the fire curtain (20) and have a general L-shaped profile.   9. Device according to claim 7 or 8, wherein the first pair of guide rails (40) comprises lips (42) constricted arranged on either side of the fire curtain (20).   The device according to any one of claims 7 to 9, wherein at least one pair of balls (45) is provided on each slide of the first pair of guide rails (40), said balls (45) being disposed in vis-à-vis both sides of the fire curtain (20) to guide its vertical movement.   11. Device according to any one of the preceding claims, characterized in that it further comprises a chest (15) common to the two curtains (20, 30) having a plurality of walls (15a, 15b, 15c, 15d, 15e, 15f ) to protect said curtains (20, 30) from the weather in their raised position.   12. Device according to any one of the preceding claims, characterized in that the fire curtain (20) further has a ballast (25) in the lower part to facilitate its descent by gravity, especially in case of emergency.   13. Device according to claim 12, wherein the ballast (25) consists of a folded sheet (25a) pinching the bottom of the fire curtain (20) and inside which is a flat iron bar (25b) extending substantially the entire width of said fire curtain (20).   The device of claim 13, wherein the folded sheet (25b) is attached at a lower hem (21b) of the fire curtain (20) and a bead wire (21c) is slid into said hem (21b) to prevent said folded sheet (25a) slidably falls.   15. Access (12) internal or external building, such as an airlock, equipped with a safety device (10) according to any one of the preceding claims.