EP1779902A2 - Device for opening a moveable panel - Google Patents

Abstract

The panel opener, comprising a motor (11) connected to the panel by a transmission mechanism (12) including a rotary to horizontal movement converter (14), a non-reversing unit (18) and an activator (21), has the activator positioned between the non-reversing unit and movement converter, with both the activator and the motor controlled by a fire security system circuit. During operation the security system closes the fire door automatically, while a push-button switch overides the circuit, disengaging its clutch (24 - 26) to allow the door to be re-opened temporarily, closing it again once the switch is released.

Description

The present invention relates to the technical field of controlling the travel of a mobile panel in translation relative to a bay that such a panel must allow to open or close.

A particularly advantageous application of the invention relates to panels movable in translation intended to constitute shutter panels berries, when security measures must be taken to temporarily isolate two different premises separated by a fixed partition, delimiting said bay which serves as ordinary intercommunication between the locals.

A particularly advantageous application relates to fire resistant doors that are generally used in industrial premises, commercial or public, such as car parks.

In the preferred application above, the so-called fire-resistant or fire-resistant doors consist of at least one panel, generally of large size. Such a panel is intended to occupy a first position, called safety or closure of the bay, in which the panel allows to completely close the bay, so as to avoid, for example, the passage of smoke or flames in the separated by the partition defining the bay closed by such a panel. Such a panel is intended to be immobilized in a second position, said opening of the bay. Such a panel is held in an open position by means of generally static means, the release or neutralization occurs automatically or in a controlled manner when a security signal requires the closure of the bay.

In a conventional manner, when a safety signal intervenes, the panel is not subjected to any positive motorization action, so that it is generally moved automatically, in translation travel to occupy its closed position, either by intermediate of a counterweight, either through the presence of a rail inclined in the proper direction and to which the movable panel is suspended.

Initially, the commissioning of such a panel was temporary and occasional and related to fire safety. However, it is becoming more and more often the obligation to regularly close, for example every evening, such panels, so that they occupy their security position. Each of these panels must then be placed in the open position every morning, which is a relatively difficult maneuver to carry out, given the size and weight that such panels represent.

In the prior art, it is known various devices to facilitate the opening of such panels, while maintaining a function of passage from the open position to the closed position without any positive motorization action.

Thus, the patent FR 2 866 669 proposed a control device for moving a panel comprising a motor connected to the panel by a transmission mechanism. Such a device comprises a rotor locking means by applying a holding current on the motor, in order to keep the panel in the open position. It therefore appears that in the open position of the panel, the power supply of the motor must be maintained, which constitutes a major drawback which requires, in particular, the implementation of a backup battery, in order to keep active closing control systems.

It is known by the way, by the patent FR 2,605,620 , a winch for the automatic displacement of a movable panel, comprising a worm-pinion type transformation system, a control rotation movement in a translational movement of the movable panel. The worm-pinion system is irreversible type to allow the translation of the panel to place it in its open position and to prohibit the translation of the panel tending to place the latter in its closed position. The worm is mounted on an oscillating support held in position by a rod adapted to be displaced by an actuating member in order to obtain the uncoupling between the worm and the pinion allowing the panel to come to occupy its closed position.

The winch described by this patent has a relatively significant complexity of implementation and does not allow to take into account the constraints relating to a fire safety of the movable panel.

The object of the invention is therefore to overcome the disadvantages of the prior art by providing a simple system to ensure the opening of a movable panel which is adapted to automatically move from its open position to its closed position, while taking into account the constraints imposed by the fire safety of the mobile panel.

• ■ un système de transformation du mouvement de rotation du moteur en un mouvement de translation du panneau mobile,
• ■ des moyens d'irréversibilité montés en sortie du moteur et agissant sur le système de transformation pour autoriser la translation du panneau en vue de le placer dans sa position d'ouverture et pour interdire la translation du panneau visant à placer ce dernier dans sa position de fermeture,
• ■ et des moyens d'action pour, dans un mode embrayé, autoriser la translation du panneau, en vue de le placer et le maintenir dans sa position d'ouverture et, dans un mode débrayé, annihiler le fonctionnement des moyens d'irréversibilité pour libérer le système de transformation de mouvement, de manière que la panneau puisse venir occuper sa position de fermeture caractérisé en ce que les moyens d'action sont interposés entre les moyens d'irréversibilité et le système de transformation et en ce que les moyens d'action et le moteur sont commandés par un circuit de commande piloté directement par un système de mise en sécurité incendie.

To achieve such an objective, the device for opening a movable panel is adapted to automatically move from its open position to its closed position, the device comprising a motor connected to the panel by a transmission mechanism, moving the panel from its closed position to its open position, the transmission mechanism comprising:

• A system for transforming the rotational movement of the motor into a translation movement of the movable panel,
• Irreversibility means mounted at the output of the motor and acting on the transformation system to allow the translation of the panel to be placed in its open position and to prohibit the translation of the panel to place the latter in its position closing,
• And means for acting, in an engaged mode, to allow the translation of the panel, with a view to placing it and keeping it in its open position and, in a disengaged mode, to annihilate the operation of the irreversibility means for releasing the movement transformation system, so that the panel can come to occupy its closed position characterized in that the means of action are interposed between the irreversibility means and the transformation system and that the means of action and the motor are controlled by a control circuit controlled directly by a fire safety system.

According to another characteristic of the invention, the fire safety system delivers a control command to the control circuit to place the action means in disengaged mode, in order to release the motion transformation system and thus to enable the panel to come to occupy its closed position.

Preferably, the control circuit is controlled by a push button, so that the motor and the means of action are controlled to ensure the displacement of the panel, in order to place it in its open position.

According to another characteristic of the invention, the fire safety system controls the means of action in disengaged mode, in priority to the order coming from the push button.

According to another characteristic of the invention, the control circuit is a low-voltage circuit, powered directly for the fire safety system which allows contactors to control the power circuit which supplies the motor and the power supply means. 'action.

Advantageously, the device according to the invention comprises a panel opening end-of-travel sensor, making it possible to stop the operation of the motor and to maintain the means of action in the engaged mode, in order to keep the panel in its position. 'opening.

According to a preferred embodiment, the transformation system comprises a cable connected to the panel and intended to be wound on a drum rotated by the motor.

According to a preferred embodiment, the irreversibility means are formed by an irreversible gear, interposed between the motor and the drum.

According to a preferred embodiment, the means of action are a clutch, of the electromagnetic type, interposed between the drum and the irreversible reducer.

Various other characteristics appear from the description given below with reference to the accompanying drawings which show, by way of non-limiting examples, embodiments of the subject of the invention.

Figs. 1 and 2 are elevational views showing a door equipped with an opening device according to the invention, placed, respectively, in its closed position and its open position.

Figs. 3 and 4 are partial sectional views showing a transmission mechanism forming part of the device according to the invention and placed in two characteristic positions.

Fig. 5 is a view of a circuit diagram of the control device for the opening device according to the invention.

Figs. 1 and 2 show, schematically, a partition 1 between two rooms that can communicate via a bay 2, capable of creating a large passage area that should be controlled, especially when a set safety must be respected. The bay 2 is closed by a door constituted, in the example illustrated, by a panel 3, movable in translation along a substantially horizontal travel, in a closing direction shown schematically by the arrow F1. Conventionally, the panel 3 is mounted so as to pass automatically, that is to say without motorization, its open position illustrated in FIG. 2 at its closed position illustrated in FIG. 1.

In the example shown, the panel 3 is suspended by lines 4 to a rail 5 which is inclined in the direction of the arrow F1 in the direction of the ground, so as to be able to involve an automatic translation, gravitational effect, the panel 3 in the direction of the arrow F1, while a means for stopping the panel 3 in the open position has been automatically or voluntarily neutralized. Of course, it should be noted that the kinetic energy necessary for the translation of the panel 3 in the direction of the arrow F1 can be developed by means of a counterweight connected to the panel, via a cable or the like winding on a return pulley. Such means of automatic closing of the bay 2 will not be described more precisely because they are well known to those skilled in the art and are not part of the subject of the invention.

The object of the invention is more specifically a device 10, adapted to ensure the opening of the movable panel 3 and holding in its open position illustrated in FIG. 2. The device 10 comprises a motor 11, connected to the panel 3 by means of a transmission mechanism 12 adapted to, on the one hand, move the panel 3 from its closed position to its open position and, on the other hand, do not interfere in the operation of the automatic closing means of the bay.

According to the invention, the transmission mechanism 12 is of the irreversible type to block the panel 3 in its open position when the motor 11 is stopped. This transmission mechanism 12 comprises mechanical irreversibility means for locking the panel in its open position, while the motor 11 is no longer powered. This transmission mechanism 12 is disengageable under the action of a control command to allow the automatic closing of the panel 3.

As is more particularly apparent from FIGS. 3 and 4, the transmission mechanism 12 comprises a transformation system 14 of the rotational movement of the motor 11 in a translational movement of the movable panel 3, in a direction opposite to the direction of the arrow F1. In the illustrated example, the motion transformation system 14 comprises a cable 15 , one end of which is connected to the panel and whose other end is wound on a drum 16 rotated by the motor 11. The rotation control of the motor 11 leads to the winding of the cable 15 on the drum 16, in order to pass the panel 3 from its closed position to that of opening.

The transmission mechanism 12 also comprises mechanical irreversibility means 18, mounted at the output of the motor 11 and acting on the transformation system 14 to allow the translation of the panel, in order to place it in its open position and to block the panel in its open position, that is to say prohibit the translation of the panel to place the latter in its closed position.

As is more particularly apparent from FIGS. 3 and 4, these irreversibility means are mounted between the drum 16 and the output of the motor 11. In the example illustrated, the irreversibility means 18 are formed by an irreversible reduction gear, mounted directly at the output of the motor 11, thus being interposed between the motor 11 and the drum 16. Thus, the gear 18 is rotated by the motor 11 during the opening phase of the panel 3. When the panel 3 reaches its open position detected by a limit sensor 19, the motor 11 is stopped and the irreversible reducer 18 thus keeps the panel 3 in its open position. The irreversible reducer 18 prevents the closure of the panel 3 which is subject to the automatic closing means, counterweight type or others. Of course, it could be envisaged to implement mechanical means of irreversibility different from a gearbox.

The transmission mechanism 12 also comprises electrically-controlled action means 21 adapted to act on the operation of the irreversibility means 18. These electrically-controlled action means 21 comprise an engaged mode of operation making it possible to provide coupling between the motor 11 and the motion transformation system 14, in order to place the panel in its open position. These means of action 21 are controlled to present a disengaged operating mode for removing or annihilating the irreversibility of the means 18 thus enabling the movement transformation system 14 to be released, so that the panel can come to occupy its position. closing under the action of automatic closing means. In other words, in the disengaged mode, the irreversibility means 18 are rendered inactive with respect to the motion transformation system 14.

According to an exemplary embodiment, the electrically controlled action means 21 are made by a clutch of the type electromagnetic, which is interposed between the drum 16 and the irreversible reducer 18.

As is more particularly apparent from FIGS. 3 and 4, the electromagnetic clutch 21 comprises a stator 23 provided with an electromagnetic coil 24 and a rotor 25. When the coil 24 is not energized, an air gap E appears between the rotor 25 and a disc of friction 26 rotatably coupled to the drum 16 (Fig. 3). In this disengaged mode, the drum 16 is not rotatably connected to the gearbox 18 or the motor 11. When the clutch coil 24 is energized, the friction disk 26 is attracted to the rotor 25, so that the drum 16 is coupled in rotation to the motor 11 via the gearbox 18. The gap E is reduced to a zero value in this engaged mode (FIG 4).

According to another characteristic of the invention, the device 10 comprises an electric control circuit 30 for the motor 11 and the clutch 21, which is controlled directly by a fire safety system 31. For example, the control system Fire safety 31 may be a self-contained trigger detector (DAD) or a fire safety control unit (CMSI). As is more particularly apparent from FIG. 5, the control circuit 30 comprises two circuit branches connected in parallel, one of which comprises a relay R1 adapted to control clutch control contactors c1 21, this relay R1 being connected in series with a control push button 32 . The other branch of the circuit comprises a relay R2 for controlling a motor control contactor c2 11, the relay R2 being connected in series with the limit switch 19 and a control switch c1 of the clutch. It should be noted that the limit switch 19 has a connection terminal with the circuit branch having the relay R1. The two branches of the control circuit are connected, on the one hand, to a manual release button 35 and, on the other hand, to the fire safety system 31.

The control circuit 30 is a low voltage circuit, powered directly by the fire safety system 31, allowing, by the contactors c1, c2, to control the power circuit 37 providing power to the motor 11 and the electromagnetic clutch 21.

The operation of the device 10 is a direct result of the foregoing description.

The opening of the panel 3 is obtained by the action on the control pushbutton 32 which triggers, simultaneously, the power supply of the relay R1 and the relay R2 (using the contactor c1 and the limit switch sensor 19 ). Closing the electrical contactors c1, c2 provides power to the motor 11 and the electromagnetic clutch 21. The friction disc 26 is attracted by the force due to the magnetic field created by the coil 25 and moves the value of the E gap , allowing a connection by friction, between the drum 16 and the gearbox 18. The winding drum 16 is thus secured to the rotor of the clutch 25 which drives in rotation, as the action on the push button is maintained. The rotation of the drum 16 causes the winding of the traction cable 15 which leads to the translation of the panel 3 in the direction of the opening.

When the panel reaches its open position, the limit switch 19 interrupts the supply of the motor 11 by opening the contactor c2 (even if the action on the pushbutton 32 is maintained), while retaining the of the electromagnetic clutch 21. The winding drum 16 then remains locked in rotation by the rotor 25 of the clutch, itself secured to the rotation shaft of the gearbox 18 whose reduction ratio makes the system irreversible ( Fig. 4). The door is thus kept open via mechanical irreversibility means 18.

When an order for passage to the safety position is sent by the fire safety system 31 (or even by the manual release button 35), the supply of the electromagnetic clutch 21 is cut off by the opening of the contactor c1 , which has the effect of disengaging the drive drum 16 from the rotor 25 of the clutch, thanks to the friction disc 26 which is separated from the rotor 25, with the value of the gap E (FIG 3).

The drum 16 is then completely free to rotate in both directions, thanks to its rolling assembly, which allows the panel 3 to close automatically, under the action of the closing means, by freely unwinding the traction cable 15, without any restraint related to the opening system 10 according to the invention.

The control of the closure (energy, speed, damping, etc.) can thus be ensured by a system completely independent of the opening device 10 according to the invention.

The order of passage in the fire safety position being a priority over any other command, the closing of the panel 3 is also obtained during the entire opening stroke by simultaneously cutting off the power supply of the motor 11 and the clutch 21 by the press the manual release button 35. The cutout takes precedence, even if the action on the control pushbutton 32 opening is maintained. In any case, the opening device 10 remains inactive, as long as the order of passage to the safety position has not been canceled.

It should be noted that the energy, as well as the regulating control members, necessary for closing the panel, are completely independent of the motorized assistance device for opening 10.

It must be considered that the control circuit 30 is adapted to consume on the control line of the fire safety system 31 a power of less than 2 Watts.

Such a device is particularly economical and universal, insofar as such a device 10 can be used regardless of the direction of opening of the door or the relative position of this device relative thereto. Indeed, the direction of rotation of the motor is defined by the wiring of its power supply. It should be noted, moreover, that the opening maneuver can always be performed manually, regardless of the state of the opening device 10 according to the invention.

It should be noted that the device according to the invention can be implemented on new installations but also on existing installations, without modification of the door.

The invention is not limited to the examples described and shown because various modifications can be made without departing from its scope.

Claims (10)

- Device for opening a movable panel (3) which is adapted to automatically move from its open position to its closed position, the device comprising a motor (11) connected to the panel by a transmission mechanism ( 12), to move the panel from its closed position to its open position, the transmission mechanism (12) comprising: A system for transforming (14) the rotational movement of the motor into a translation movement of the movable panel (3), Irreversibility means (18) mounted at the output of the motor and acting on the transformation system to allow the translation of the panel to be placed in its open position and to prohibit the translation of the panel to place the latter in its closed position, And means for action (21) for, in an engaged mode, to allow the translation of the panel, with a view to placing it and keeping it in its open position and, in a disengaged mode, to annihilate the operation of the control means. irreversibility for releasing the motion transformation system (14), so that the panel (3) can come to occupy its closed position, characterized in that the action means (21) are interposed between the irreversibility means ( 18) and the transformation system (14) and that the actuating means (21) and the motor (21) are controlled by a control circuit (30) directly controlled by a fire safety system (31). ). - Device according to claim 1, characterized in that the fire safety system (31) delivers a control command to the control circuit (30) for placing the means of action (21) in disengaged mode, to release the motion transformation system (14) and thus allow the panel to come to occupy its closed position. - Device according to claim 1 or 2, characterized in that the control circuit (30) is controlled by a push button (32), in such a way that the motor (11) and the action means (21) are controlled to move the panel, in order to place it in its open position. - Device according to claims 1 and 3, characterized in that the fire safety system (31) controls the means of action (21) in disengaged mode, preferably to order from the push button (32) . - Device according to claim 1, characterized in that the control circuit (30) is a low voltage circuit, powered directly by the fire safety system (31) allowing contactors (Ci, C ₂ ) to control the power circuit (37) providing power to the motor (11) and the means of action (21). - Device according to claim 1 or 3, characterized in that it comprises a sensor (19) opening limit switch panel, to stop the operation of the motor (11) and maintain the means of action in the engaged mode to keep the panel in its open position. - Device according to claim 1, characterized in that the transformation system (14) comprises a cable (15) connected to the panel and intended to be wound on a drum (16) rotated by the motor. - Device according to claims 1 and 7, characterized in that the irreversibility means (18) are formed by an irreversible gear, interposed between the motor (11) and the drum (16). - Device according to claims 1 and 8, characterized in that the actuating means (21) are a clutch, of the electromagnetic type, interposed between the drum (16) and the irreversible reducer (18). - Device according to one of claims 1 to 3, characterized in that the control circuit (30) is adapted to consume, on the control line of the fire safety system (31), a power of less than 2 Watts .

Images