FR2821111A1 - Security feature for motorized shutter or door operating mechanism, comprises pinions in the motor transmission which only complete the drive when the pinion axis is displaced electromagnetically - Google Patents

Abstract

A motor (2) drives a shaft (1) and output pinion (6) to operate shutters or a door. The motor transmission is contained in a frame (20) and consists of an endless screw (4,8) which drives the output pinion through a gear train (10,12,12',10') when an electromagnet linked to motor starting has displaced the intermediate pinion shaft (26). In normal inactive mode the shutters or door may be operated manually. An INDEPENDANT CLAIM is made for the application of the system to a sliding door through a rack and pinion.

Description

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 The invention is in the field of motorized maneuvering means of a leaf closing an opening of a building. It relates to a safety device to authorize the manual operation of such a leaf, in the event of an unexpected and / or programmed interruption of the supply of electricity to the motor member intended for its operation, and / or in the event emergency.

 Means are known for operating a leaf comprising an electric motor and elements for transmitting to the leaf the rotary movement of the motor shaft. Commonly, these maneuvering means are, for a leaf, of the type with an electric actuator, and for a sliding leaf of the type with a rotating motor, for driving a rack fixed to the leaf.

 A problem to be solved resides, for safety reasons, in the need to be able to manually operate the leaf in the event of an unexpected and / or programmed interruption of the power supply to the motor, and / or in the event of an emergency.

 In the case of a sliding leaf, it has been proposed to link the rack with a motorized pinion, so as to allow, if necessary, a rupture of this relation to allow manual operation of the leaf. To this end, the motor and its pinion are movable relative to the rack, being supported by a movable plate along a guide ramp. Control means are for their part constituted by a pulling lever for a latch, the latter blocking the motor and its pinion in the position of engagement on the rack. Reference may in particular be made to patent FR2757560 (LE BRUN) which describes such a mechanism.

 A drawback of such a device lies in its lack of reliability. Indeed, the drive member is likely to be placed outside, or even in a hostile environment such as in the event of fire. It follows that the means for unlocking the latch and the means for guiding the plate which supports the motor can be altered and cause the device to malfunction. Another disadvantage lies in the need to place the zipper in a place made accessible by a single authorized person, which goes against the security requirements aimed at allowing access to a room by a staff if necessary. emergency and security, firefighters in particular.

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 In the case of a leaf arranged by beating, it has been proposed to interpose intermediate means for bringing into ruptible relation between the electric jack and the beating. These intermediate means comprise a link connected to the drive member, and cooperating electromagnetic members respectively supported by the link and by a wing operating arm.

The electromagnetic members are activated concomitantly with the actuation of the jack, so as to link the link and the arm when they are supplied, and vice versa so as to break this connection in the event of a power failure. Reference may in particular be made to patent FR2703721 (LANTZ) which describes such a mechanism.

 The disadvantage of such a device lies in the fact that it cannot be transposed to a sliding leaf. Furthermore, the intermediate means of connection between the motor member and the operating arm are means for operating power of the leaf. It follows that the torque to be exerted between the link and the operating arm, necessarily large, implies an inappropriate power in correspondence with the electromagnetic means.

 The general object of the present invention is to provide a safety device for the motorized operation of a leaf, sliding for example, the operation of which does not prevent manual operation of the leaf by unforeseen and / or security personnel in particular. .

More particularly, the aim of the invention is to propose such a device the means used for which are passive means, that is to say which do not have a significant influence on the nature or on the power of the motorized organs for maneuvering the leaf.

The device of the present invention comprises intermediate means for connecting the motor member on the one hand, and a leaf operating member to which the latter is connected on the other hand. These intermediate means use a pair of cooperating electromagnetic elements, which are activated concomitantly with the power supply to the drive member, so as to connect or not the drive member and the leaf operating member. .

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par l'intermédiaire de l'élément d'interposition auquel ils sont associés ; ces moyens de mise en relation sont mobiles entre une position d'entraînement dans laquelle l'élément d'interposition met en relation les éléments d'entrée et de sortie entre eux, et une position de débrayage dans laquelle l'élément d'interposition est dégagé d'une liaison en rotation de l'un quelconque au moins de ceux-ci, C) des moyens de manoeuvre des moyens-de mise en relation entre les positions susvisées d'entraînement et de débrayage. Ces moyens de manoeuvre comprennent les éléments électromagnétiques coopérants qui sont respectivement affectés à un bâti et à au moins un organe de manceuvre des moyens de mise en relation. According to the present invention, the above-mentioned intermediate means comprise: A) a pinion interposed between the motor member and the leaf operating member, said pinion comprising at least: a) an input transmission element, which is linked in rotation with a rotating shaft of the motor member, b) an output transmission element, cooperating with the leaf operating member, either directly or indirectly, c) at least one interposition transmission element, placed between the input and output transmission elements for their rotational connection, B) means for bringing the input and output elements into contact with each other,

through the interposition element with which they are associated; these connecting means are movable between a drive position in which the interposing element relates the input and output elements to each other, and a disengaged position in which the interposing element is disengaged from a rotational connection of at least any one of these, C) means for maneuvering the means of relating the above-mentioned drive and disengage positions. These maneuvering means comprise the cooperating electromagnetic elements which are respectively assigned to a frame and to at least one member for actuating the contacting means.

comprendra que le dispositif de l'invention est aussi applicable à la manoeuvre d'un battant, selon l'agencement en correspondance de l'élément de sortie. Such a device is preferably applicable to the operation of a sliding leaf, the output transmission element in particular consisting of a pinion meshing on a rack. Nevertheless we

will understand that the device of the invention is also applicable to the operation of a leaf, according to the arrangement in correspondence of the output element.

 The maneuvering member of the connecting means is advantageously formed of an arm which supports at one of its ends one of the electromagnetic members. This member preferably consists of a passive metallic element. The arm is connected at its other end to the frame on which it is guided, in particular by pivoting, and on which is placed the other electromagnetic element, consisting of an active magnetic suction cup arranged opposite the aforementioned preferred metallic element.

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 The arm is advantageously spontaneously held in the disengaged position, against its displacement in the drive position under the effect of the activation of the electromagnetic elements concomitantly with the activation of the motor member. This spontaneous support is for example obtained by an elastic member or the like, or is obtained naturally, depending on the orientation of the device, by the own weight of the arm.

 It will be noted that, according to various variants, the connecting means are of the type of any one of the means of the group of means comprising a pinion, the friction connection means, and the keying connection means, or the like such as through grooves.

 Preferably, the interposing element is permanently maintained in relation to any one of the input and output elements, and more particularly the input element. The connecting means are means for connecting together the interposing element and the other of the input and / or output elements, and in particular the output element in relation to the particular case mentioned above.

 According to a first variant, the interposing element is held in engagement with the input element and is mounted in a freely rotating manner on the output shaft. As for the arm, it is linked in translation with a thrust member, against the interposing element, of a friction member linked in rotation on the output shaft by keying or the like, for example.

 These provisions are such that the activation of the electromagnetic means and the passage of the arm into the drive position, causes the concomitant displacement of the thrust member and the connection of the friction member with the interposing element. , to drive the output shaft. It will be understood that, conversely, the absence of activation of the electromagnetic means and the passage of the arm into the disengaged position, causes the release of the friction member from a support against the intermediate element, to interrupt the drive in rotation of the output shaft and authorize its manual mancouvre.

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According to a second variant, the interposing element is still held in engagement with the input element. An intermediate gear is guided in translation on the frame and is maneuverable by the arm between the declutching and drive positions. This gear comprises a transmission bridge composed of at least two intermediate gears linked in rotation, which are respectively assigned to the output shaft and a support shaft of the interposing element.

 These provisions are such that the activation of the electromagnetic means and the passage of the arm into the drive position, causes the concomitant displacement of the transmission bridge and the connection between the shaft supporting the interposing element and the shaft. Release. Conversely, the absence of activation of the electromagnetic means and therefore the disengaging position of the arm, cause the rupture of the relationship between the support shaft of the interposing element and the output shaft.

 It will be understood that, depending on the nature and arrangement of the transmission elements, this allocation is effected indifferently and in an analogous manner, by taking an intermediate pinion on the output element and the interposing element respectively, or by a taking intermediate gears on respectively secondary gears, which are themselves respectively assigned to the output and interposition shafts.

 To limit the size of the device according to this variant, the output shaft and the support shaft of the intermediate element are coaxial, being mounted freely rotating one on the other.

détails en relevant apparaîtront, à la description qui va en être faite de formes préférées de réalisation, en relation avec les figures des planches annexées, dans lesquelles : la fig. 1 est une vue schématique en coupe frontale d'un dispositif de l'invention selon une premier exemple de réalisation. la fig. 2 est une vue schématique partielle de côté du dispositif illustré sur la fig. 1. la fig. 3 est une vue schématique en coupe frontale d'un dispositif de l'invention selon un deuxième exemple de réalisation. The present invention will be better understood and

details will be apparent from the description which will be made of preferred embodiments, in relation to the figures of the attached plates, in which: FIG. 1 is a schematic front sectional view of a device of the invention according to a first embodiment. fig. 2 is a partial schematic side view of the device illustrated in FIG. 1. fig. 3 is a schematic front sectional view of a device of the invention according to a second embodiment.

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interposé entre l'organe moteur et les organes d'entraînement du vantail. In the figures, the present invention proposes to equip a leaf with a device interposed between it and its drive motor, in order to allow its manual operation when necessary. For this, a clutch device which can be operated by electromagnets is

interposed between the motor member and the leaf drive members.

Ces moyens de mise en relation sont mobiles entre une position de débrayage et une position d'entraînement dans laquelle le vantail est manoeuvrable par l'organe moteur, cette dernière position étant représentée en traits épais interrompus. The motor shaft 2 is equipped with an input transmission element, constituted in the illustrated examples by a worm screw 4. The leaf, for its part, is equipped with an operating element, such as a rack not shown in the figures, intended to cooperate with an output transmission element of the device, pinion 6 in particular. A transmission element, pinion 8 in particular, is interposed between the endless screw 4 and the output pinion 6. This interposing pinion 8 is provided to put in connection the input shaft 2 carrying the endless screw 4 with the output shaft 1 carrying the output pinion 6, when the leaf operating command is activated. For this, the device comprises means for bringing into contact or not between the end screw 4 and the output pinion 6, by means of the interposition pinion 8.

These connecting means are movable between a declutching position and a drive position in which the leaf is maneuverable by the drive member, the latter position being shown in thick broken lines.

 In the variant illustrated in FIGS. 1 and fig. 2, these connecting means are constituted by a drive bridge comprising secondary pinions 10, 10 'cooperating respectively with intermediate pinions 12,12'. In fig. 3, these connecting means consist of a friction wheel 14, linked by keying 3 to the output shaft 1.

For these two variants, the means for operating the connection means comprise electromagnetic members 16 and 18 respectively assigned to the frame 20 of the device and to a movable arm 22 for operating the connection means.

 It will be noted that for reasons of convenience, the electromagnetic member 16 intended to be stimulated and that assigned to the frame 20, while the other 18, passive, is supported by a movable arm 22 articulated 24 in pivoting on the frame 20

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It will also be noted that the arm 22 is spontaneously held in the disengaged position, either by means of an elastic return member in the disengaged position, not shown in the figures, or if necessary naturally by its own weight according to its orientation relative to the ground. Finally, it will be noted, again for reasons of convenience, that the interposition pinion 8 is permanently maintained in relation to the worm 4.

manoeuvrés par le bras 22 pour mettre en relation entre eux le pignon d'interposition 8 et le pignon de sortie 6. When the leaf maneuver control is activated, the motor and the corresponding electromagnetic member 16 are put into operation. The connecting means 12, 12 'or 14 are then

operated by the arm 22 to put the interposition pinion 8 and the output pinion 6 into contact with each other.

 In the variant illustrated in FIGS. 1 and fig. 2, the intermediate pinions 12, 12 'are supported by a movable secondary shaft 26, for their connection with other secondary pinions 10, 10', respectively assigned to the output shaft 1 and to the shaft 28 supporting the interposition pinion 8, which is driven by the worm screw 4. It will be noted that the output shaft 1 and the shaft 28 supporting the interposition pinion 8 are coaxial and are mounted freely rotating one on the other, for the sake of convenience.

sortie 1 supporte de manière librement tournante le pignon d'interposition 8, en prise sur la vis sans fin 4. Une broche de poussée 30 est montée coulissante le long d'une lumière 32 ménagée à travers l'arbre de sortie 1. Cette broche 30 est manoeuvrable par le bras 22, en vue d'exercer une poussée axiale contre la roue à friction 14, elle-même alors appliquée contre le pignon d'interposition 8. Il en découle que l'arbre de sortie 1 est dans ce cas entraîné en rotation par le pignon d'interposition 8. On remarquera la présence d'une butée axiale à billes 36, interposée entre le bras 22 et un doigt de poussée 38 de la broche 30, de manière à autoriser la rotation de l'arbre de sortie 1 sans incidence sur la mobilité du bras 22. On remarquera aussi la présence d'un ressort de torsion 40 lié à ses extrémités respectives à la butée à billes 36 et au doigt de poussée 38. Ce ressort 40 permet d'équilibrer les efforts exercés par le bras 22 contre le doigt de poussée 38, nonobstant la trajectoire en pivotement du bras 22, et aussi d'absorber les éventuelles vibrations produites par l'arbre de sortie 1 entraîné en rotation.In the variant illustrated in FIG. 3, the tree of

outlet 1 freely rotatingly supports the interposition pinion 8, engaged on the worm screw 4. A push pin 30 is slidably mounted along a light 32 formed through the output shaft 1. This pin 30 is maneuverable by the arm 22, in order to exert an axial thrust against the friction wheel 14, itself then applied against the interposition pinion 8. It follows that the output shaft 1 is in this case driven in rotation by the interposition pinion 8. Note the presence of an axial thrust ball 36, interposed between the arm 22 and a thrust pin 38 of the spindle 30, so as to allow the rotation of the shaft output 1 without affecting the mobility of the arm 22. It will also be noted the presence of a torsion spring 40 linked at its respective ends to the ball bearing 36 and the thrust finger 38. This spring 40 makes it possible to balance the forces exerted by the arm 22 against the finger of thrust 38, notwithstanding the pivoting path of the arm 22, and also to absorb any vibrations produced by the output shaft 1 driven in rotation.

Claims (9)

 1.-Safety device for authorizing the manual operation of a motorized leaf in the event of an unexpected and / or programmed interruption of the supply of electricity to the motor member provided for its operation, this device comprising intermediate means of setting in relation between the motor member on the one hand, and a leaf operating member to which the latter is connected on the other hand, which use a pair of cooperating electromagnetic elements (16, 18), which are activated concomitantly to the power supply to the drive member, so as to connect or not the drive member and the leaf operating member, characterized in that said intermediate means comprise: A) a pinion interposed between the motor member and the leaf operating member, said pinion comprising at least: a) an input transmission element (4), which is linked in rotation to a rotating shaft of the drive element (2), b) an output transmission element (6) cooperating with the leaf operating element, c) at least one interposition transmission element (8), placed between the transmission elements d 'inlet (4) and outlet (6), for their connection in rotation, B) means (14, 12) for bringing the input (4) and output (6) elements into contact with each other, by means of the interposition element (8) with which they are associated, these connecting means being movable between a drive position in which the interposing element relates the inlet (4) and outlet (6) elements to each other, and a declutching position in which the interposition element (8) is released from a rotational connection of at least any one of them, C) means (22, 16, 18) for maneuvering means (14, 12) for relating the drive and disengaging positions, these maneuvering means comprising the cooperating electromagnetic elements (16, 18) which are respectively assigned to a frame (20) and to an operating member (22) connecting means. <Desc / Clms Page number 9> 2.-Device according to claim 1, characterized: in that the operating member of the connecting means (14,12) is formed of an arm (22) which supports at one of its ends the one (18) of the electromagnetic members, and which is connected at its other end to the frame (20) on which it is guided (24) and on which is placed the other electromagnetic element (16), arranged opposite the first (18 ). 3.-Device according to claim 2, characterized: in that the arm (22) is spontaneously held in the disengaged position, against its movement in the drive position under the effect of the activation of the electromagnetic elements (16,18) concomitantly with the activation of the motor organ. 4.- Device according to any one of claims 1 to 3, characterized: in that the connecting means (14,12) are of the type of any one of the means of the group of means comprising a pinion (10 , 12), the friction connection means (14), and the keying connection means. 5.-Device according to any one of claims 1 to 4, characterized: in that the interposing element (8) is permanently maintained in relation to any of the input elements (4) and outlet (6), the connecting means (14, 10, 12) being means for connecting together the interposing element (8) and the other of the inlet (4) and outlet ( 6). 6-Device according to claim 5, characterized: in that the interposing element (8) is held in engagement on the input element (4) and is mounted in a freely rotating manner on the output shaft ( 1), the arm (22) being linked in translation with a thrust member (38), against the interposing element (8), of a friction member (14) linked in rotation on the output shaft (1). <Desc / Clms Page number 10> 7.- Device according to claim 5, characterized: in that the interposing element (8) being held in engagement on the input element (4), an intermediate gear (12,12 ') is guided in translation on the frame (20) and is maneuverable by the arm (22) between the declutching and drive positions, the said pinion comprising a transmission bridge (12,12 ') composed of at least two intermediate pinions which are linked in rotation and which are respectively assigned to the output shaft (2) and to a support shaft (28) of the interposing element (8). 8.- Device according to claim 7, characterized: in that the output shaft (1) and the shaft (28) supporting the intermediate element (8) are coaxial by being mounted freely rotating one on the 'other. 9.- Application of a device according to any one of claims

 preceding the operation of a sliding leaf, the output transmission element (6) being constituted by a pinion meshing with a rack supported by the leaf.