FR2721059A1 - Remote release of lock on emergency exit doors in buildings - Google Patents

Abstract

The lock mechanism has an electromagnet (10) that releases a spring (22). The spring then operates a mechanism that withdraws the vertical locking bolts so the door is free to open. The electromagnet is actuated by a circuit that responds to fire, smoke or flooding detectors, or external control switches. The electromagnet core attracts a bent plate (31) that rotates about an axis (16). This plate acts on a second pivoted (20) plate (19), which holds the spring locking plate (26) in position. The spring locking plate is also mounted on a pivot. Operation of the electromagnet rotates the bent plate, allowing the spring to tilt the other plates as it moves upward. The spring is compressed when the door is locked.

Description

The present invention relates to a device for unlocking a panic door remotely intended to be used to close emergency exits in different premises and arranged so as to be closed from the outside, or even condemned. from the inside but still openable in all configurations
There were already many doors of this kind which all have an internal side, substantially at mid-height, a horizontal bar occupying its entire width against which the thrust of the crowd must be exerted in the event of panic. and who then controls the opening of the door.

These "anti-panic" are usually unusable because of their closings -res by means of a padlock to fight against fraudulent use.

 The device according to the invention makes it possible to remedy this drawback.

The remote unlocking device allows the door to be opened by supplying or cutting the latter, controlled by sensors (fire, flood or other incidents) or buttons placed under the responsibility of management and the fire department. ; in spite of a closing carried out with a padlock (the exit of the crowd is then possible as well as the entry of the intervening police); while concerting the pombi- -lity to close and open the door from the outside as well as its opening
by a horizontal thrust of the crowd on the latter from the interior.

The locking device for automatic and remote unlocking of a panic door or the like equipped with vertical aligned rods sliding in opposite directions to engage in the rooms of the chamber is characterized in that it comprises, in the alignment of said three-angles a system controlling their sliding constituted by an electromagnet and connected to a detector, for example of fire which causes its triggering in the event of an incident and in that this electromagnet actuates acting return members on a locking pallet, unlocking the action of a spring housed between a fixed stop and a slider mon
-ty so ordered the sliding of the rods in the sees of -locking.

 The deflection members include a bent locking pallet, the elbow of which is secured to a rotary axis mounted transversely in the plates of the cabinet, a mobile pallet capable of tilting, carried by a rotary axis parallel to the previous one and one end of which abuts elastically. against the tail of the locking pallet, and in that the locking pallet carried by a rotary axis parallel to the teeth is blocked by the free end of the movable pallet to compress the spring housed between the fixed stop and the sliding rod control slide.

 The slider is L-shaped and by its return from a square contacts a lug secured to one of the rods through a light to push the rod under 1 s spring action when it is released and pushes the slider after erasing the range of convictions in the event of an incident.

 The two vertical rods are secured by a disc mounted freely rotatable around an axis, perpendicular to the door and disposed between these rods, provided with two pins cooperating with two grooves provided for this purpose, or vice versa, each respectively at l 'one of the two ends facing the two above-mentioned rods.

 This device can also be combined with a horizontal bar, carried at each of its ends by a swivel arm which a spring constantly tends to keep in the inactive position, but which if horizontal pressure is exerted on it, acts directly on the integral square of one of the two vertical rods mentioned above to cause its release, which automatically causes that of the other vertical rod.

In addition, a horizontally sliding piston is constantly stressed by a spring towards a position in which it maintains the above-mentioned vertical rods in the inactive position but which; when the door is closed. abuts against a fixed plate which makes it slide in the opposite direction, towards an inactive position in which it releases the vertical rods which, under the action of the spring interposed between the case and the bracket, acting on them? grout feels so that their ends each engage in the latch assigned to it
This device can be provided with a lock with pivoting crutch, constituting a lever of the first kind, the extension of which cooperates with a stud fixed to one of the rods. to release its end from the corresponding keeper.

This crutch cooperates with a bolt capable of occupying two extreme positions, one in which it blocks the operation of the bequill, and the other in which it allows its free operation, the passage of the one to the other position of this lock being controlled by a lock, provided with a pivoting finger,. whose rotation of 360 degrees in one direction causes the abovementioned lock to abut in one of its extreme positions, and Its rotation of 360 degrees, in one other direction, causes it to abut in the other extreme position
The accompanying drawing shows by way of example an embodiment of the present invention.

 Figure i is a perspective view showing the open security door.

 Figure 2 is a front view showing this memAe closed door.

 FIG. 3 is a front view in the locked position of the unlocking system without its cover, and of the return disc as well as the position retaining stud, devoid of their cover.

 Figure 4 is a view similar to the previous in unlocked-locking position.

 FIG. 5 is a section along A-A of 1 unlocking device of FIG. 3.

 Figure 6 is. a section along B-B. the nipple holding -tion of the rods q of Figures 3 and 4.

 Figure 7 is a front view of the horizontal bar.

 Figure 8 is a section C-C of the latter illustrating the open and closed positions.

 Figures 9 and 10 are front views of the lock, after removal of its housing in the two extreme positions that the stand can occupy.

The security door, or panic door 1, comprises, on the exterior side, a control handle 70 and a lock entry 90, and, on the interior side, detax sliding vertical rods in the extension I 'one of q other, 4 and 5, cooperating with strikes 6 and 7 provided respectively in the upper cross member of the door frame, and in the flooring, as well as a horizontal bar 8 for manual opening and a box 3 for unlocking remote q placed on one of the vertical rods
It contains an electromagnet 10 fixed by screws ll on the plate 12 of the cof -fret and connected to the circuit by the conductors 13.This electromagnet is -lied, moreover. by a wire 14 to a fire, smoke, push button, etc. detector (not shown).

The moving element 15 of the electromagnet 10 is in contact with a bent pallet of locks 31, the elbow of which is brazed on a rotary axis 16 mounted transversely in the box and. held by a spring 17 abutting on a transverse axis 30 of the plate in the position shown in the drawing (FIG. 3,4),
This pallet 31 controls by its heel 18 a movable pallet 19 brazed in the middle on an axis 20 and returned by a spring 29 supported on one axis 30; the free end of this pallet 19 blocks a condemnation pallet 21 brazed on a pivot axis 26 and subjected to @ 1 action of a spring 28 also supported on the axis 30.

 This pallet 21 condemns a powerful spring 22 housed between a fixed stop 23 of the box and the return of angle 44 of a slide 24 in L.

 This slide 24 is guided in a groove 45 formed between the plate 12 of the box and a return 46 of the bottom of the box 47.

It is the square return 44 of the slide 24 which blocks on one side the spring 22 and which is blocked by the locking pallet 21 when the latter is in the position of FIG. 4, that is to say held by the movable pallet 19 itself held by the heel 18 of the locking pallet 31 pushed by the movable assembly 15 of the electromagnet which is energized.

During any tripping, the mobile assembly 15 of the electro-magnet 10 causes the pallets to tilt as indicated in FIG. 3, by bending the springs 17 q 28. 29 which will serve to bring the pallets back to the position of start when rearming the unit using the slider 24 ma - manually operated
Thus, if an incident occurs. The detector generates the displacement of the electromagnet and the latter by the set of paddles, causes the entry of the rods controlling the unlocking.

These rods 4 and 5 overlap at the outlet of the unlocking device
A lug 32 integral with the rod 5 is pushed by the flank 33 of the slide 24 through a notch 4 and thus causes the displacement according to the arrow F of the rod 5. This rod 5 causes the displacement in the opposite direction according to the flêdhe Fl of the rod 4. in fact in the inner ends of the rods 4 and 5 are provided horizontal notches 37 and 38 in which are engaged lugs 39 and 40 diametrically opposed on the disc 41 freely rotatable around 1 ' axis 50 .. perpendicular to door 1, between
the inner ends of rods 4 and 5 and aligns with them.

It goes without saying that this automatic unlocking in the event of an accident does not
-not damn the manual operation of the rods ensured by the horizon bar-
-tale 8 on which the push can be exerted, carried at each of its ends by a pivoting arm 9 which controls the unlocking of the rods 4
and 5 in the unlocked position. these are blocked by a coul piston
-smoothing 62 q solicited by a coaxial spring 60, which when the
door, abuts against a fixed plate 00 which slides it into a po
-section ot it releases the vertical rods 4 and 5 which under the effect of the spring 51 has
- acting on them. engage in affected strikes.

The spring 51 acting on the bent end 55 of the lower rod 5
constantly tends to return it to the locked position, its end
then being engaged in strike 7; simultaneously, the upper rod
4 tends constantly to slide in the locking position, its upper ex-end then being engaged in the keeper 6.

The arms 9. carrying the support rod 8, are mounted pivoting around
the axis 52 and a tension spring 53 constantly tends to bring them back
inactive position: when a strong push is exerted on the rod 8, the
-pivoting lever 9 exerts through the roller 54 an upward push on the bent upper end 55 of the lower vertical rod 5 which it releases, simultaneously causing the release of the upper vertical rod 4.

As soon as said rod is released the spring 60 exerts a thrust on the wafer 61, integral with the piston 62. which .n'en being more blocked by the plate 00, slide fapn that its head 63 .de larger diameter, s' engages in the upper part 81, of corresponding diameter, of the slot 82 provided for this purpose in the upper part of the vertical rod 4 this slot has - before itself a sufficient width so that the body of the piston 62 can - slide there freely (figure 9
The crutch 70 is. constantly stressed by the spring 71 Towards its posi
-tion inactive in abutment against lug 72 its tail 73 is in contact with a te
-ton 74 provided for this purpose at the bottom of the vertical rod 5 ;; a worm
- wheel 75 can rotate between two extreme positions in which it is locked
sweated in abutment against lugs 76 and 77 in one of these positions,
- shown in Figure 9, it blocks the stand 70 by resting on a cam
78 integral in rotation thereof; | on the other hand in its extreme position op-
-posed,, shown in Figure 10, the latch 75 and the cam 78 does not prevent
the user to push down on the stand 70 including the tail 73,
acting on the nipple 74. lift the vertical rod 5 and. simultaneously lowering
-se the vertical rod 4 which is unlocked.

 The control of this lock to bring and maintain it in one of its two extreme positions can be obtained by a pivoting finger 80, the rotation of 360 degrees in one direction or in another can be controlled by a key engaged from 1 outside in the lock entry 90.

 It is, of course, moreover that the embodiment which has been described above, with reference to the appended drawings, has been given for information only and is in no way limitative and that numerous modifications can be made without it being s for this of the present invention

Claims (8)

 1) Locking device. automatic unlocking and remote from a panic door 1 or similar, fitted with vertically aligned rods sliding in opposite directions to engage in the strikes of the jamb. characterized in that it includes, in the alignment of said rods 4 .5 a system controlling their sliding coootitue paf an electromagnet 10 and connected to a detector for example of fire which provokes that its triggering in case of incident, and in what this electromagnet 10 actuates return members 31, 19, acting on a locking pallet 21, unlocking the action of a spring 22 housed between a fixed stop 23 and a slider 24 mounted in a manner has ordered sliding rods in the unlocking direction  2) Apparatus according to claim 1 characterized in that the return members comprise a bent locking pallet 31 whose elbow is secured to a rotary axis 16 mounted transversely in the plates of the box, a movable pallet 19 capable of tilting, carried by a rotary 20 parallel to the previous one and one end of which abuts elastically against the tail of the locking pallet 31 and in that the locking pallet 21 carried by a rotary pin 26 parallel to the previous ones is blocked by the free end of the pallet mobile 19 to compress the res-  spring 22 housed between the fixed stop 23 and the slide 24 for controlling the sliding of the rods 4, 5.  3) Apparatus according to claim 1 or 2 characterized in that the neck-slide 24 is L-shaped and by its return from square contacts a lug 32 secured to 3 of one of the rods 5 through a light 34 to repel the rod 5 under the action of the spring 22 when this is released and pushes the slide after erasing the locking pallet 21 in the event of an incident,  4) Apparatus according to I any one of the preceding claims, characterized in that the two vertical rods 4 and 5, are secured by a disc 41 freely rotatably mounted about an axis 50, perpendicular to the door 1 and has between these rods 4 provided of two pins 39, 40 cooperating with two grooves 37, 38 provided for this purpose, or vice versa, respectively, each has one of the two ends facing the two aforementioned rods.  5) Apparatus according to any one of the preceding claims, characterized in that it is combined with a horizontal bar 8, carried at each of its ends by a pivoting arm 9 which a spring 53 constantly tends to keep in the inactive position, but which, if a ho -rizontal pressure is exerted on it, acts directly on the square 55 secured to one of the two above-mentioned vertical rods | to cause its release, which automatically causes that of the other vertical rod.  6) Device according to claim 5 characterized in that a horizontally sliding piston 62 is constantly biased by a spring 60 towards a position in which it maintains the above-mentioned vertical rods in -active inion @ but which when the door closes comes abut against a fixed plate 00 which makes it slide in the opposite direction, towards an inactive position, in which it releases the vertical rods which, under the action of the spring 51, interposed between the housing 100 and the square 55, acting on them, slide so that their ends each engage in the keeper 6 s 7 which is assigned to it  7) Apparatus according to any one of the preceding claims Ca- - characterized in that it is provided with a lock with pivoting crutch 70 constituting a lever of the first kind @ whose extension 73 cooperates with a stud 74 secured to one of the rods 4, 5 to release its extr from the corresponding keeper.  360 degrees in the other direction causes it to land in another extreme position.  8) Device according to claim 7 characterized in that the stand 70 cooperates with a latch 75 capable of occupying two extreme positions, one in which it blocks the operation of the uuille, and the other in which it allows its free operation, the passage from one to the other position of this lock being controlled by a lock 90, provided with a pivoting finger 80, whose rotation of 360 degrees, in one direction, causes the aforementioned lock to snap into one of its extreme positions, and its rotation