WO1992001852A1

WO1992001852A1 - Double security lock for emergency exits

Info

Publication number: WO1992001852A1
Application number: PCT/FR1991/000591
Authority: WO
Inventors: Marcel Diemer
Original assignee: Marcel Diemer
Priority date: 1990-07-20
Filing date: 1991-07-18
Publication date: 1992-02-06
Also published as: EP0493583A1

Abstract

The invention relates to a security and alarm lock intended to provide for the opening of emergency exits while preventing their unexpected or fraudulent utilization. According to figure 1, the lock is characterized by a case (1), a bolt (8) penetrating in the slot (2) and guided by a groove (7), on a pin (3), maintained in an opening position by means of a spring (10), fitted with a locking finger (6) and with an electric contact (12), a palet (18) on an arm (16) fixed to an axis (4) and actuated by a blade spring (13). An alarm equipment (14, 15 and 17) completes the device. The invention may be applied to doors of emergency exits in order to provide for an easy and automatic opening in the case of a disaster, panic or fire and to block them against any fraudulent opening attempt. The invention is applicable to the industry of protection against theft.

Description

DOUBLE SECURITY LOCK FOR EMERGENCY EXITS

The present invention relates to a double security lock and to alarms, namely:

Locking security for the owner of the premises who is assured that no one will be able to operate said lock without his knowledge.

Safety for occupants of premises who have the option of automatically opening the emergency exit in the event of danger.

Alarms because when it opens automatically, the lock triggers an alarm incorporated in the lock and, can also trigger an alarm placed in the establishment, as well as all the regulatory systems imposed for security in establishments open to the public.

Emergency doors are generally fitted with so-called "anti-panic" locks which open the emergency doors by pressing on a bar or a pallet which releases the bolt.

Too often, it happens that accomplices who have entered the area legally, smuggle other people in through emergency doors. Thus, in order to remedy this state of affairs, those responsible have keyed locks installed, but in the event of a disaster or panic, it is impossible to go out and, as a result, a disaster ensues is unfortunately already produced.

The lock that we submit to the invention patent allows to prohibit an emergency door opening without the person in charge of the premises being immediately informed, while ensuring full security for the people occupying the premises in the event of danger.

This lock consists of a housing (1), a bolt (8) penetrating into a lumen (2) guided by a groove (7) on a stud (3), held in the open position by a spring ( 10) equipped with a locking finger (6) and an electrical contact (12), with a pallet (18) on an arm (16) fixed on an axis (A) and actuated by a spring leaf ( 13). Electrical equipment consisting of a rechargeable battery or accumulator (14), a contact (15) and an alarm buzzer (17). Figure 2 shows the lock in the door closed position, the bolt (8) is out of the housing (1), the spring (10) is tensioned, the pallet (18) is pressed, the arm (16) at its end 519) against the locking finger (6). Thus, the bolt cannot go back under the effect of the spring (10) as long as the pallet is maintained in this position since the glass pane which ensures the closing of the case, prevents it from rising.

When the glass tile of low resistance is broken, with a punch or using a small hammer which is available in the immediate vicinity of the lock, the pallet is released by the action of the spring ( 13), the finger (6) is released and the bolt is strongly pulled by the spring (10), the contact (12) is established with the battery and, the electric current feeds the vibrator which is put into action. This alarm is very useful in the event of breakage of the pane without justification or of an intention of clandestine use of the emergency exit. Figure 1 shows the lock in the open position.

To close the lock, the bolt is manually pushed into its keeper, then it is held by pushing the pallet which blocks the finger (6) until the glass pane sliding in the grooves (25) comes to hold the pallet. The door is thus condemned to any illegal attempt to open.

The device according to the invention is intended to ensure the safety of the occupants in the event of a disaster, as well as that of the manager of the premises against any illegal entry.

Depending on the qualities set out above, this lock is called a DOUBLE SECURITY LOCK FOR EMERGENCY EXITS. This device has many advantages and, in particular:

1) - Respond to the security regulations concerning establishments open to the public, since the emergency door opens very quickly in the event of a disaster, and that. while prohibiting human smuggling.

2) - Allow, by a simple gesture consisting in breaking a simple glass pane, to free the emergency passage for the evacuation of the public in the event of a disaster.

3) - The manager of the establishment is guaranteed against illegal entry which. if they occur, are immediately signaled by the noise emitted by the alarm buzzer, the intensity of which can be adjusted, and also by any other alarm available in the establishment and which can be connected to the special socket provided with the lock. The connection to the lock can be made with the entire protection system provided for the evacuation of smoke and others.

4) - This lock is called a DOUBLE SECURITY LOCK FOR EMERGENCY EXITS.

One of the improvements relates to the possibility of using said lock either automatically as explained above, or in ordinary lock controlled by an ordinary or safety key. both from the outside and from the inside, loul keeping the automatic opening system armed.

For the explanation of the drawing board relating to FIGS. 10 to 16, we have kept the same numbers for the designation of the elements identical to those of the initial patent. the important modification resides in the composition of the bolt in two parts (8) and (20). the part (8) is increased by a perforated tab for the passage of a barrel or a pump (22) over the manufacturing model of each manufacturer and adapted accordingly. This last element allows action on (20) by releasing the lug (33) from its housing (35) and thus frees the bolt portion (8) which is attracted by the spring (10) and thus released from the striker. The manufacturer will have the choice to fix the spring (10) as a clip on (8) or to fix it on (20) as indicated by the dotted line (38) and in this case, it is the part (22) which controls the movement of (8) either by friction, or by gear and rack (31) and (23). It is moreover this same part (22) which allows the bolt to return to the closed position and the reclosing "of (33) in (35). The opening by release of the bolt strongly attracted by the spring (10) can be, if necessary braked by a mass flywheel driven by the gear (31) with the flywheel (37). The part (20) has a lug 534) on which it pivots when the movement of separation is applied to it. This release movement crushes the spring (21) which will push this part back into the housing (35) of the part (8).

Thus, the lock functioning automatically as soon as the simple glass pane (26) is broken, can be used in normal lock allowing the one who has the key, either to go out, or to enter by the emergency door without any difficulty .

The simple glass pane for closing the lock box is put in place (26), by engagement in the lateral slides (25) and abuts on the sheet metal of the case after engagement by pressure on the lever (16) blocking at its end. (19) the finger (6). In order to prevent the release of the glass pane, a sheath (27) engaged at the rear of the said pane has two tabs (28) forming springs which abut on the rear and internal part of the locker's trunk. Figure (13) shows a curved casing intended to be placed just under the glass pane in order to receive the broken pieces and reject them outwards so that they do not come to engage in the mechanism of the lock. This casing (24) fιg: 13, optionally comprises an electrical circuit printed according to the diagram in fig: 16 distributing the current supplied by the battery (14) to a lamp which thus makes the glass pane bright, thus signaling the presence of the output of relief and lock. The current supplied by the battery can also be used to power a remote control switch to trigger normal voltage on the entire security system implemented in the establishment, in accordance with the regulations in force concerning establishments open to the public.

The modifications of the bolt according to figs: 10,11,12 & 18 have many advantages and, in particular:

1) - Allow the opening, inside or outside, of an emergency door fitted with this lock which prevents passage outside the event of a disaster in the establishment thus protected.

2) -Interdιt the opening without breaking the glass pane which controls the automatic system and, if the lock is breached, a sound signal sounds and warns the staff of the establishment.

3) - Allows you to open the door without any modification of the security system which remains in the state.

4) -Also allows to trigger the entire security system of the establishment imposed by the regulations for the event of a disaster.

The device can be improved with certain common elements used for the manufacture of locks as will be demonstrated in the description which follows:

Fig: 17 shows the housing cover (1) composed of a metal part and a glass pane part (54) articulated on the part (51) which, by folding down, is fixed to the rear of the housing at means of lugs (28) fixed to the part (27) and which engage under the boss (40) while the rod (42) maintains the bolt in the closed position, that is to say engaged in its keeper. Fig: 18 shows the entire lock with plan views and along its two profiles.

The operation is as follows:

The bolt (8) is linked to the part (38) by the lug (33) engaged in the housing (35). As soon as the glass pane (54) is broken, the rod (42) no longer holds the finger (6) and, under the action of the return spring (10), the assembly is suddenly pulled towards the rear, the bolt is released from its strike; the door is therefore open, as in the previous description, the alarm is triggered. A spring maintains the grip of (38) on (8) during the movement of the bolt;

To reset the bolt, that is to say to close the lock, a rod is engaged which can be combined in a form giving it a safety mission, this rod passing through the tube (41) pushes the bolt which enters his waste. To maintain it in this position, the glass pane (54) is put in place by abatement, the rod (42) retains the latch by means of the finger (6).

In this closed position, if you want to open the door without triggering the alarm system, without breaking the glass pane, simply insert the key in its entry or in the barrel and, by turning it, the coin fig: 20 is raised by friction on the edge (38) and, the lug (33) is released from its housing (35) and the movement continued by the key, causes the bolt which emerges from its strike. The door is thus opened without damage to the alarm system, the glass pane remains in good condition. If the key is removed, the spring (50) acts on the bolt to put it back in its keeper; leaving the key, the bolt works as in a pull lock. When the bolt is allowed to return to its place, the lug is replaced in its housing (35) and the lock becomes again in alarm security. Of course, the system already described with regard to the electric lighting, to the housing for receiving and ejecting broken glass, above, remains applicable in the present without it being necessary to recall it.

Thus, it can be seen that the system can be adapted to any type of lock without it being necessary to carry out an implementation of a total new manufacture of the lock.

Claims

1) Locking and alarm device characterized in that it comprises a bolt (8) held in the open position by a spring (10) and provided with a finger (6) which, when the bolt is in position closing, maintains it by the action of an arm (16) in the depressed position and whose part (19) retains the finger (6). The arm (16) is held in this latter position by the pallet (18) on which acts the glass pane closing the housing.

2) Device according to claim 1, characterized in that the rupture of the glass pane causes, under the action of the spring (13), the raising of the arm (16) and the release of the finger (6) which allows the return of the bolt (8) by the action of the spring (10) and contact (12) with the battery or accumulator and triggers the alarm (17) and all the others in the premises when they are connected with that of the housing.

3) Device according to one of the preceding claims characterized in that a pallet, retained by a glass pane, releases the opening of the lock as soon as said glass pane is broken and causes the alarm to be triggered. Different alarms located in the premises can be connected to that of the lock.

4) Locking and alarm device according to claim 1, characterized by the decomposition of the bolt (8) into two elements, one of which articulated at a point (34) decanted at (33) from the housing (35) under the action of a barrel or a pump (22), thus releasing the bolt (8), which , while responding to the action of a key, does not modify the automatic opening system in any way by destroying the simple glass pane.

5) Device according to claim 1 allowing the establishment of the simple glass pane, characterized by two slides

(25) into which is introduced the tile which comprises in its rear part, two spring blades relaxing and preventing any recoil of the tile.

6) Device according to any one of the preceding claims, characterized by a curved casing which is put in place under the pane for receiving and rejecting outside the lock, the pieces of pane during its deterioration.

7) Locking and alarm device according to claim 1 characterized in that the housing comprises a dormant glass cover equipped with a lug (42) which, using the finger (6) blocks the bolt (8) .

8) Device according to claim 1, characterized by the equipment of the dormant glass with a sheath (27) comprising tabs (28) notching in pins (40) and preventing the opening of the dormant glass.

9) Device according to claim 1, characterized by the possibility of pushing on the bolt to engage it in its keeper, inserting a rod into the tube (41) before closing the dormant glass.

10) Device according to claim 1 characterized in that the part of the bolt (38) emerges from the other part (8) which can operate by means of a key while keeping the safety system and alarm.