WO1983000523A1

WO1983000523A1 - Anti-panic bar with electric locking device

Info

Publication number: WO1983000523A1
Application number: PCT/FR1982/000132
Authority: WO
Inventors: Gerard Georges Eugene Parlebas; Solange Nee Lebars Parlebas
Original assignee: PARLEBAS, Gérard, Georges, Eugène; PARLEBAS, Solange née LEBARS
Priority date: 1981-08-07
Filing date: 1982-08-05
Publication date: 1983-02-17
Also published as: IT8212608A0; IT1157690B; FR2511069A1; ES514834A0; ES8306518A1; EP0085690A1

Abstract

Said anti-panic bar comprises a locking means (5) mounted on its fixed part (1) and is displaceable between a locking position and a releasing position. In the locking position, the locking means is apposed to the displacement of the moving part (2) of the anti-panic bar to control the unlocking of the door or other closure fitted with such bar. Said locking means is connected to an electric actuating device (19). It is subjected to the action of a resilient member (12) biasing the locking means into the releasing position. Thus, the anti-panic bar may be electrically locked, but it is unlocked to allow for its actuation when electric current is cut off.

Description

Panic bar with electric locking device.

The present invention relates in a general way to systems called panic bars, of the type mounted on doors or other closings and causing them to open under the effect of a simple push or pressure, d so that in case of fire or accident inside the lo¬ cal thus equipped, people who are in this room can escape to the outside without having to actuate a door locking device or closing. However, it is often desirable that, under the normal conditions of use of the room thus equipped, the exits provided with such a panic bar remain closed and ver¬ rusted. This is the case, for example, in supermarkets, department stores, etc. in which the regulations in force require the presence of exits equipped with panic systems to allow the rapid exit of the large number of people who may be in the store, but where by ^'against these issues are normally kept closed to prevent an uncontrolled exit of people, for example in case of theft.

The purpose of I ¹ intention is to create a panic bar equipped with a blocking device opposing its actuation under normal conditions of use, while allowing instant remote unlocking if necessary, for example if a fire breaks out in the room so equipped.

The invention therefore relates to a panic bar comprising a fixed part adapted to the door or other exit closure and a mobile part or actuating bar, the displacement of which relative to this fixed part triggers in known manner the unlocking the door or other closure, characterized in that it comprises a blocking means mounted on this fixed part and movable between a blocking position in which it is located opposite an element of this movable part of the anti bar ¬ panic, thus opposing its displacement relative to the fixed part, and an erasing position in which it ceases to oppose said displacement, and an electrical actuation means connected to this blocking means and connected to a electric power source for controlling the movement of this blocking πroyen between its blocking and effa¬ cement positions.

Advantageously, the electrical actuation means are mounted so as to maintain the blocking means in the blocking position under the effect of an electrical actuation, but the said blocking means are subjected directly or directly to the effect of an elastic means recalling said blocking means in the erasing position when this electrical actuation is suppressed.

The electrical actuation means can be of any type, and numerous electrical actuation devices can be used to provide this displacement of the locking means. However, according to a preferred embodiment, a simple electromagnet is provided, the core of which is connected to the locking means of the device but is urged elastically to a position corresponding to the position of erasure of this locking means. The core is held by the excitation of the coil of this electromagnet in a blocking position - of the panic bar. Thus, under normal conditions of use, the electromagnet remains energized and the panic bar is blocked. Since in the event of a fire or other accident inside a room, the electric current is generally cut, either due to the accident itself or for safety reasons, the removal of the 'excitation of the electromagnet corresponds to an elastic return of the blocking means of the anti-pani¬ bar only in its erasing position, so that the door or other exit closure can open freely under the 'effect of a simple push or pressure exerted on the action bar of the panic system.

According to another particular feature of the invention, the blocking is carried out between a fixed element forming a guide, pre¬ seen on the fixed part of the panic bar, and a mobile element sliding on or in this element forming a guide and connected to the system operation bar. The blocking means is then inserted, in the blocking position, in the path of this movable element relative to this fixed element.

According to a preferred arrangement, the fixed part of the panic bar carries a sheath provided with at least one light for the passage of a blocking element such as a ball, and there is provided a bushing which can slide relative to this sheath between a position in which one surface of this socket is opposite these lights to oppose the erasure of the locking elements housed therein and a release position of said lights, an elastic means normally urging this socket towards this position release, a connecting means provided between said socket and the electrical actuating device, such as one electromagnet, and a slide connected to the actuating bar or other part of the panic bar and present ¬ both a surface forming a stop, these blocking elements being located opposite this surface "forming a stop to oppose the movement of this slide in the normal use condition, when the actuating device ement electric is supplied, but can be erased due to the elastic displacement of the sleeve when the electric supply is removed. Thus, when the electromagnet or the equivalent electrical actuation device is normally supplied with electric current, the two parts of the anti-panic bar are held by locking in a condition corresponding to the closing of the exit. However, if necessary, for example in the event of a fire or an accident in the local area, it suffices that the electric current is cut off so that the means for blocking the panic bar is reminded mechanically, under the effect of the elastic means provided, in an erasing condition allowing the free actuation of this panic bar. This unlocking of the bar is therefore carried out immediately and perfectly reliable, since it results from the simple removal of a positive locking. On the other hand, under normal conditions of use, the locking of the exit is perfectly achieved. It goes without saying that, if this were desirable, the positions of the sleeve, of the sleeve and of the slide relative to the fixed and mobile parts of the panic bar could be reversed without departing from the invention.

The description which follows, made with respect to the ^y ^ ^Ê attached drawings, given without limitation, will better understand the invention.

Fig. 1 is a cross-sectional view of a panic bar equipped with a blocking device according to the invention, in the blocking position.

Fig. 2 is a partial view taken in a direction offset by 90 ° with respect to the previous one.

Figs. 3 and 4 are views similar to FIGS. 1 e 2, but showing the device in the condition of free opening of the issue.

Fig. 5 is a view similar to FIG. 3, but showing the panic bar in the open position.

In the drawings, _^ was designated by the same référen¬ these corresponding elements throughout the Figures to simplify the description. Furthermore, only the parts corresponding to the application of the invention have been shown, except for the means provided on the panic bar to ensure normal locking of the door or of the closure thus equipped. . It will also be understood that, although the invention has been described here in its application to an anti-panic bar of the type in which the movable part of the bar moves relative to its fixed part by a translational movement or sliding, the device would apply equally well to a bar in which the part 'mobile actuation pivots relative to the fixed part to ensure the unlocking of the door or other closure.

If we refer to the drawings, we have indicated in 1 the fixed part forming the body of the panic bar, which is mounted on a door (not shown) or on another closure and by reference 2 the movable part of this panic bar, constituting the actuation bar.

According to the invention, a sleeve 3 is fixed to the bottom of the fixed part 1 of the panic bar. This sheath comprises in the present case four slots 4 arranged towards its upper end and in which balls 5 can move radially.

A sleeve 6 slides around the sleeve 3. This sleeve comprises a first part or ring 7 which tightly surrounds the sleeve 3 and which has at its end

$ upper an annular ramp 8 whose role will be indicated later and a second piece in the form of a cap 9 which surrounds the upper part of the ring 7 with which it is made integral in any desired manner, for example by screwing e 10. This cover 9 cleaning as shown an interval with the sheath 3. It has towards its lower edge a rim 1 directed towards the outside, which serves as a support cup for one end of a helical spring 12 supported by its other end against a part forming a bowl 13. This part 13 is engaged in a housing 14 formed in the actuation bar 2 forming the movable part of the panic bar, between two lateral profiles of this bar.

The bowl 13 is fixed by screwing at 15 on an axis 16 having an outside diameter corresponding substantially to the inside diameter of the sheath 3 and being able to slide therein. This axis 16 has at its lower end engaged in the sheath 3 a lug 17 providing an annular shoulder 18 in the form of a ramp, which joins the outside surface of the axis 16. The device according to the invention further comprises an electromagnet 19 whose coil is indicated at 20 and the core at 21. This core is connected as shown articu¬ ly to a pivoting lever 22 by a small axis 23 engaged in a longitudinal slot 24 of the lever 22. The -this is pivotally mounted at 25 on the fixed part of the panic bar and it carries an arm 26 terminated by a spout 27 which engages under the flange 11 of the socket 6.

We will now describe the operation of this device. The normal use condition is _. shown in Figs. 1 and 2. In this condition, the electromagnet 19 is supplied with current, so that the core 21 is returned to the rear and thus maintains the lever 22 in a tilting position in which the arm 26 maintains the socket 6 in the raised position antagonizing the action of the spring 12.

In this position of the sleeve 6, the ring 7 protrudes partly in line with the lights 4 of the sleeve and opposes any movement towards the outside of the balls 5 relative to the position shown in these Figs. 1 and 2, in which these balls protrude inside the bore of the sheath 3 and are consequently located opposite the annular shoulder 18 of the axis 16. The balls therefore then oppose in an easily understandable way to any movement of the axis 16 and consequently of the movable part .2 of the panic bar relative to the fixed part 1, and in sequence to any actuation by means of this anti-panic bar of the door locking system or other closures.

In the event of a fire or accident in the room thus equipped, the current supplying the electromagnet 19 is cut. The core 21 is then free to slide in the coil 20 and the spring 12 pushes the bushing downwards around the sheath 3, causing the lever 22 to tilt.

The condition obtained is that visible in FIGS. 3 and 4. We see that, in this condition, the ring 7 has completely disappeared below the lights 4, so that the balls 5 can move radially outward to come to rest on the ramp 8.

This erasure of the balls 5 towards the outside, which can occur either automatically if the lights 4 are inclined radially outwards and downwards, or under the effect of the annular shoulder 18, makes it as is easily understood the free passage of the axis 16, so that the mobile part 2 of the panic bar can move relative to the fixed part 1 and that the panic bar can therefore be actuated freely, causing the opening of the door or other closing in a manner which is in itself conventional.

The condition obtained is that shown in FIG. 5.

As indicated above, since the unlocking of the panic bar is effected by the removal of a positive blocking factor, simply under the effect of a spring, it can be seen that this unlocking will be perfectly reliable and instantaneous , by allowing the immediate exit of people from inside the premises, in safe conditions perfect.

After 1 actuation of the panic bar, the movable part 2 is returned to its initial position relati¬ vely to the fixed part 1 by the usual elastic members of rappe (not shown). The condition * is then that visible in FIGS. 3 and 4.

When the electric current is restored, the excitation of the coil 20 recalls the core 21 in its initial position by causing, by means of the lever 22 and of the arms 26, an upward displacement of the sleeve 6 whose ramp 8 pushes the balls 5 inwardly in a posi¬ tion in which they are placed in front of the annular shoulder 18, again opposing any actionne¬ panic bar. It can therefore be seen that no particular intervention is necessary for restoring the condition of normal use and that the blocking device of the panic bar can be controlled entirely remotely.

Modifications can be made to the embodiment described, in the field of technical equivalences without departing from the invention.

Claims

CLAIMS 1.- Panic bar comprising a fixed part adapted to the door or other exit closure and a mobile part or actuating bar, the displacement of which in relation to this fixed part triggers in a known manner the unlocking of the door or another closure, characterized in that it comprises a locking means (5) mounted on this fixed part (1) and movable between a locking position in which it is located opposite an element (16, 18) of this movable part (2) of the anti-panic bar, thus opposing its displacement relative to the fixed part, and a position of facement in which it ceased to oppose said displacement and a means of electric actuation (19) connected to this blocking means and connected to a source of electrical energy to control the movement of this blocking means between its blocking and erasing positions.

2. Panic bar according to claim 1, characterized in that the electrical actuation means (19 is mounted so as to maintain this locking means (5) in the locking position under the effect of an electrical actuation and in that said blocking means is connected directly or indirectly to an elastic means (12) recalling said blocking means in the erasing position when this electrical actuation is removed.

3. Panic bar according to claim 2, characterized in that the electrical actuation means consists of an electromagnet (19) whose core (21) is connected to the locking means (5), the latter being recalled in the condition of erasure by this elastic means (12) when this electromagnet ceases to be excited.

4. Panic bar according to any one of the preceding claims, characterized in that the blocking is carried out between a part forming a guide (3) provided on the fixed part (1) of the panic bar and a movable part. (16) sliding on or in this part forming a guide and connected to the actuating bar (2).

5. Panic bar according to claim 4, characterized in that the fixed part (1) of the panic bar carries a sheath (3) provided with at least one light (4) for the passage of a blocking element such as a ball (5), a sleeve (6) which can slide with respect to this sleeve between a position in which a surface of this sleeve is opposite these lights for s oppose the erasure of these blocking elements housed therein and a disengaging position of said lights, a connecting means (11, 26, 22) provided between said socket and the electrical actuation device (19) -, and a slide (16) connected to the actuation bar (2) or mobile part of the anti-panic bar and having a surface forming a stop (18), these blocking elements being located opposite of this forman surface abutted in the normal use condition, when the device for electrical actuation is supplied.

6. Panic bar according to claim 5, characterized in that the elastic means (12) is connected to the bush (6) to urge it normally towards the position of release of the lights (4) receiving the locking elements ( 5).

7. Panic bar according to claim 6, characterized in that the electrical actuation device consists of an electromagnet (19) whose core (21) is connected to a pivoting lever (22) provided with an arm (26) engaged under the sleeve (6, 11) and acting on the latter, during the excitation of this electromagnet, in opposition to the action of a spring (12) for returning this sleeve in position ment dégage¬ lights (4) receiving the elements of ^{the locking} (5).