FR2791385A3 - Emergency release system for fire exit door in building has horizontal pushbar hinged to door at end and withdrawing bolts at side, top and bottom of door leaf - Google Patents

Abstract

The door (1) is hinged (2) about one vertical edge on the other edge carries a lock (8) with a bolt (5) halfway up. The lock operates vertically-moving bolts (6,7) near the vertical edge (3) of the door and sliding through fittings at top and bottom. The pushbar (10) is at waist height and is carried on downwardly-sloping arms (13,14) at its ends. There is a hinge (15) near the hinged end of the door and the other end is connected to the lock.

Description

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  The present invention relates to an anti-panic opening device for

emergency doors.

  As we know, panic devices for emergency doors consist of a horizontal bar running halfway up the door and provided, at its ends, with articulated arms close to the side carrying the hinges and that of

opening the door.

  The arm, opening side, is associated with the operation of a lock which

  controls locks and locking rods.

  In current devices, the arms have a perfectly similar structure.

  This identity, also taking into account the fact that the bar consists of a cylindrical tube which does not provide any visible differentiating indication, does not make it possible to immediately find the opening side of the door. For this reason, it can happen that whoever wants to open acts on the device on the hinge side of the door rather than on the opposite side. Since acting close to the hinge, the lever arm is

  extremely unfavorable, the opening effort is important.

  This can be particularly dangerous in emergency situations, when a panicked crowd, running towards the exit, is slowed down by the delayed opening of the door, which leads to a rush which can compromise the

peoples' security.

  The present invention therefore aims to provide an anti-

  panic to immediately determine the opening side of the door and thus avoid, at the emergency exits, the creation of obstacles which can dangerously

  impede the rapid and regular flow of people in an emergency.

  Another object of the present invention is to provide an opening device

  economical and aesthetic anti-panic.

  These aims are achieved with an anti-panic opening device comprising a bar, the ends of which are fixed to arms articulated in the door along a horizontal axis, one of these arms being associated with the operation of the door lock, the device being characterized in that the bar has locating means

  visible from the side of the door opening on which the device is mounted.

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  Other advantages and characteristics of the present invention will emerge more clearly

  further from the detailed description which follows on the basis of the accompanying drawings in which, at

  by way of example, without limitation: FIG. 1 shows a perspective view of an emergency door provided with an anti-panic device according to the invention; FIG. 2 shows an enlargement of the portion of the device provided with locating means visible from the opening side of the door; Figure 3 shows an exploded view of the means shown in Figure 2; Figure 4 shows a perspective view of a first variant of the invention; Figure 5 shows a perspective view of an emergency door with a panic device according to another variant and finally

  FIG. 6 shows a front view of the device of FIG. 5.

  In FIGS. 1 to 3, an emergency door is generally designated by 1 with

  hinges on the upright 2 of a frame which delimits the doorway.

  The amount of the rebate side and the lintel of the chassis are respectively indicated by 3 and 4 and it is in them that will engage the bolt 5 and the latches 6 and 7

  actuated by a lock 8 intended for closing the door.

  The lock 8 is placed on the internal surface of the door close to the rebate of the upright 3 and to activate it there is provided a device 9 which, because of its function,

called anti-panic.

  The device 9 consists of a cylindrical tubular bar 10 at the ends of which are inserted (see FIG. 3) expansion plugs 11 fixed by

  screw 12 passing through the ends of the arms 13, 14.

  The arm 13 is articulated in the lock 8 and serves as a lever for actuating the lock, while the arm 14 is articulated in a housing 15 fixed to the door near the

  side of the hinges on the upright 2.

  The articulation axes of the arms 13, 14 are coaxial and parallel to the bar 10.

  At the point where the bar 10 joins the arm 13, there is provided a handle 16 composed of a tubular portion 17 profiled in a sleeve from which there emerges a lateral extension 18 provided with a cavity 19 shaped in a manner complementary to the arm. The cavity 19 is partly closed laterally, that is to say on the side of the lock 8, by a pair of blades 20 which delimit a section of the cavity 19 equal to that of the arm 13.

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  By design, the handle 16 is made of plastic and its assembly is carried out by first inserting the arm 3 in the cavity 19 then the tubular bar 10 in the portion of the sleeve 17 until it engages the expansion plug 11. With the blocking of the plug 11 in the tubular bar 10, the handle 16 is firmly anchored to the device 9. As can be seen, the invention perfectly fulfills the desired objectives. In particular, the handle 16 constitutes an easy locating element for those who want to open the door, an element which, being remote from the hinge of the door, once actuated, facilitates the opening of the door in panic conditions. Indeed, given the distance between the handle and the hinge fixing axis, the thrust exerted on the handle makes it possible to use the entire length of the bar 10 as a lever arm, in

  facilitating and ensuring the opening of the door, especially in emergency situations.

  The invention described is susceptible to numerous modifications and variants, which

  all come from the same innovative concept.

  Figure 4 shows a solution in which the cavity which receives the arm is

  closed to form a tube 21 with a shape complementary to that of the arm 13.

  Finally, in FIGS. 5, 6 the identification of the opening side of the door is carried out by providing on the bar 10 corrugations 22 which are attenuated towards the hinges. The undulation near the arm 13 constitutes the grip 23

the user.

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Claims (3)

  1. Panic opening device for doors, comprising a bar, fixed at its ends to arms articulated in the door along a horizontal axis, one of these arms being associated with the operation of the door lock, characterized by the fact that said bar (10) has visible locating means (16, 22, 23) on the side of   the opening of the door (1) on which the device (9) is mounted.   2. Device according to claim 1, characterized in that it consists of a bar in the ends of which are inserted expansion plugs (11), fixed by screws (12), at the ends of the arms (13 , 14), and at the point of junction of the bar with the arm close to the opening side of the door, there is provided a handle (16) composed of a tubular portion (17) profiled in a sleeve, of which there emerges a lateral extension (18) provided with a cavity (19) shaped in a manner complementary to the arm, said cavity being able to receive the arm and the sleeve   can receive one end of the bar.   3. Device according to claim 1, characterized in that the means   visible marking consist of undulations (22, 23) of the bar.