FR2646682A1 - ELECTRIC LOCKING AND CURRENT BREAKDOWN UNLOCKING DEVICE ADAPTABLE TO EMERGENCY EXITS - Google Patents

Abstract

The present invention relates to an electric locking and unlocking device by power cut and which, in addition to the conventional use of an electric lock, can also and above all be mounted on the doors of emergency exits, in order to ensure control thereof. It only takes a power cut generated, either by a fire detection device, or by any other alarm, or quite simply by a guard for the electromagnet to cease its maintenance action. Then the bolt, the profile of which is double sloped, slides along its striker and disappears under the action of a push on the door which opens effortlessly.

Description

Electric locking device and unlocking by cou-

  The present invention relates to a mechanism adaptable to doors and particularly to those serving as emergency exits - in order to allow control thereof. Indeed if these in case of emergency or fire must open by a simple push to allow evacuation

  quick of people inside. It is by cons

  It is often desirable, under normal conditions of use IO-from the room, that lton can control the opening of these exits, in order to avoid fraudulent exits or access by an accomplice already

inside.

  To ensure this control, the currently known embodiments are intended to block the handle, or the thrust plate or

  - the bar called "panic bar" which normally activates ltef-

  facemert of the bolt and the opening of the door. Now a difficulty over-

  comes when, in a panic, the crowd suddenly moves

  to the door. Indeed in these devices the erase command

  mernt of the bolt is only made possible after prior tilting of the blocking member, the one which, in the active position, immobilizes it against any pivoting. If due to crowd pressure a continuous force is exerted on the lever, the latter maintains their mutual engagement with the lever and the locking member, so that the subsequent action on the latter by mechanical control

  - or electric, does not always allow these two elements to be separated

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  menzs, e19 lever remaining stuck preventing the opening of the door and the risk that the emergency exit being blocked could no longer be used in the event of an accident with the consequences

  irremediable that may result.

  - In the present invention, the door is kept closed by

  i = obilisation of a bolt kept in its keeper by means of

  diary of a suction cup electromagnet under voltage.

  All it takes is a power cut generated, either

  by the fire detection device, or by any other system

  IO -me alarm, either simply by a guard, so that the elect

  tro-magnet ceases its action of maintenance. Then the pne, the profile of which has a double slope, slides along its keeper and disappears

  under the action of a push of the door which opens effortlessly.

  On board N I are represented - (partial exploded view) - _

  the main parts of a practical embodiment of the invention.

  We therefore see in I fig. I the holding electromagnet, the upper part 2 of which is locked in rotation on the body of the said electromagnet, by means of balls, this effect, this upper part 2 becomes integral with the body of the electromagnet - when the latter is under tension, these balls in 4 being inserted between the body of the electromagnet and said upper part 2 are trapped in cells arranged mid upper part mid electromagnet thus preventing any sliding in rotation of

the top plate.

  - Or have also seen that the upper part is provided with a finger at 5 and that this finger comes to marry a notch hollowed out in the internal face of the bolt 3 and which is seen at 6 in FIGS. I and 2

  exploded drawings. In fig. I the electromagnet is under voltage

  sion, finger 5 in its notch immobilizing the bolt when closing,

  - in fig. 2 the electric voltage having been cut, the upper part

  er being released can therefore turn just a push soiz

2646 682

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  exerted on the door to compress the springs 7 the psne is eff-

  face allowing the opening of the exit. At the end of the operation the springs 7 and the spring 8 will bring back the bolt, ie the upper

  on = ont.è with his finger in the starting position.

  - The diagrams in Plate 2 give us more clearly the operating mode of our device in phase I fig. 3

  the electromagnetic wind is energized and finger 5 re-

  presented here by its hatched section is blocked in the notch YI2> made in the buttonhole hollowed out in the lower part IO - of the bolt which it keeps engaged in its keeper IO thus keeping the door locked D in phase 2 fig. 4 the current being cut off, all it takes is

  pushed on the door, the electromagnetic suction cup being located

  bre of rotation the finger can be released from the notch and slide

  I5 - in the buttonhole 12 of the bolt making it immediately lii-i_.

  so that said door opens under the slightest push

  It should be noted that the power cut can be generated either.

  by fire detection, glass breakage, or simply by a guard. - In fig. 5 Always carries in the opening-and total erasing phase of the pin In fig. 6 'Door open but approaching closure

  In 11 are shown schematically the two son of

  shore leading to glass breakage, fire detection or post

_ control.

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R E VE N D I C A T I 0 K S

  I -Electric locking device and unlocking by

  break of couraeznt, characterized, in that it comprises a wood-

  tier containing a double loss profile bolt with two springs

  of compression - (7) - and hollowed out on its internal face with a carvi-

  buttonhole tee - (I2) - fitted with a notch - (6) in which a finger engages - (5) - welded elsewhere by on the rotating upper part - (2) - with an electro -eimmnt sucker type and which is blocked in rotation when the latter is energized 2 - Disnositif according to claim I characterized by the fact ID that when the upper rotating part of the electro-.re mant (2) is blocked, when it is energized, the finger (5) which is integral therewith is also immobilized in the notch (6) formed in the 'ene blocking it in the closed position 3 - Device according to claim I characterized by fact that as soon as there is a current cut in the electro-eaimant suction cup its upper rotating part (2) is free to rotate and allows the finger (5) which is integral with it to leave the retaining notch (6). The bolt is no longer held in locks, can be erased in the lock by a push on the door which opens, the finger (5) being able to slide in the buttonhole I2)

  4 - Device according to. claim I cerPc-êerisa in that the pro-

  double slope latch wire allows in case of swinging door of stef-

  facer and get into it. keeper pushed by its springs (7) as well

  than for the upper part. (2) to resume sae. depD position--

  brought back by its return spring (8)