FR2624904A1 - Simplified lock for sliding or pivoting closure with fire safety - Google Patents

Abstract

Device for locking a sliding or tilting panel, characterised in that a piece 2 for the complete retention of a piece 4 for connection to the panel to be closed 5 possesses a large lever arm multiplied at 9 and 10 (electromagnetic sucker) by means of the action of a ramp 7 which controls a lever 6 which itself pivots at 8. In the event of a fire or a fault in the electromagnet sucker 10, opening can be obtained easily without the destruction of a device; additionally, a thermal fuse and a manual control complete the device.

Description

 The present invention consists of a security locking device very simple to achieve so statistically safe operation.

 The awareness of the security to be given to the occupants of all premises (for example in case of fire, the quick release of all the issues is a phenomenon in constant progression for fifteen years.

 Many solutions have been made in this area.

 It should be remembered that it is a question of being able to quickly and remotely remove the closures in case of fire or other sinister and, if necessary, if the unlocking control does not work, to be able to force with a calibrated force, the opening the panel that blocks the issue.

 Figure 1 shows the device according to the invention in closed position. Figure 2 shows the same device in the open position.

In a housing 1 is fixed pivotally a piece of rocker 2 indented eventually abutting through a spoiler 13 on the housing 1 retained by a small spring 142a housing 1 and can trap in a notch a cut piece bound to the panel to lock 5
In the closed position this piece 2 to rock up a piece 6 through a reversal of the latter 7. 6 and 7 rotate in 8. The piece 6 carries a tension spring 14 for the counterplate 9 for a suction-electro-magnetic 10 min. ive of an ejector spring if it is magnetized (permanent magnet) articulated thanks to an elastic seal 11.

 The end of the piece 2 in contact with the piece 6 is rounded and may optionally be provided with a bearing if desired, have a tare holding force with much better accuracy therefore without taking into account the coefficients of random friction.

 If the supply of the electromagnet 10 is cut off, a return spring 12 supplies the piece 2 as shown in FIG. 2 after the piece 6, which has not been retained, has ceased its restraining force.

The locking force on the tie rod 4 fixed to the panel 5 is multiplied with respect to the holding force of the suction cup 10 by the double ratio of the levers of the piece 2 and the piece 6 which are multiplying: for a large hold, the force to be exerted by 10 can be very weak, so in the case of the use of active electromagnetic suction cup (that is to say action when the winding of the suction cup is supplied with current) a very low consumption
It is also possible according to the invention to use a permanent magnet sucker (unlocking by feeding the coil which produces a field canceling the effect of this magnet)
It will be noted that the angle made by the piece 2 with the piece 6 (vertical) is low, this allows to force if necessary force with a defined effort the opening of the panel 5 if the suction cup can not be released.

According to 1 '

<tb> invention <SEP> can <SEP> be
<tb> elastic enough for this opening procedure not to damage the device
At the opening, the force of the spring 12 may be sufficient enough for the piece to be ejected as well as the panel.

 In accordance with the invention the locking notch 3 of the piece 2 istelle what serves as a backstop to the piece 4.

 In accordance with the invention, the electromagnetic suction cup 10 or its counter-plate 9 are fixed by a low-temperature thermal fuse (70 "for example) in order to add additional security to the unlocking of the panel 5. A manual release control 15 may be added.

 The devices according to the invention are intended for locking in security (especially fire) of sliding or pivoting panels

Claims (8)

- REVENDICATIG <S-  1- Device according to the invention consisting of a locking of a sliding panel or pivoting 5, via a pierced plate 4, through a coupling of two levers 2 and 6 for a very low holding force  2- Device according to the invention and according to claim 1 characterized in that the tilting retaining piece 2 has at its latching part a notch such that it locks completely locking the head of the piece 4 connected to the panel 7.  3- Device according to claims 7 and 2 characterized in that the locking behavior is achieved by a fixed electromagnetic or positive suction cup (or its counterplate) by a thermal fuse which allows unlocking in case of fire despite a no - operation of the suction cup.  4- Device 1 and 2 characterized in that the tilting retaining piece 2 makes a small angle with the vertical lever 6 which allows thanks to the elasticity of the latter according to the invention to force the opening of the panel 5 without destroying the lock.  5- Device according to the invention characterized in that the lever  6 is controlled by the holding piece 2 by means of a ramp - which allows positive locking in "continuous".  6- Device according to the invention characterized by an automatic reset by the introduction of the peg 4 in the notch of the piece 3 which makes a rotation thereof, its end flipping the lever 6 allowing the counter plate 9 maintained by the fuse 16 to stick on the suction cup 10.  7- characterized device according to the invention in that the piece 3 in the unlocked position prevents the lever 6 to apply the against plate 9 on the suction cup 10.  8- characterized device according to the invention in that the lateral flexibility of the piece 17 allows the against-plate 9 to apply in coplanarity to the suction cup 10, its "end" rigidity prevents the lever 6 s' escape by pivoting on the axis 8.