FR2815373A1 - Safety device for manual operation of motorized sliding door comprises movable support for motor normally locked in top position by electromagnets - Google Patents

Abstract

The device comprises a movable support (14) for the motor (2) in order to either place the pinion (8) in contact with the rack (12) or to break this contact by lowering the support. The support is normally locked in the top position by electromagnets (24,26) maintained active by a low voltage source. Rupture of the supply to the electromagnets causes the support to lower.

Description

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 The invention is in the field of motorized maneuvering means of a sliding 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 sliding leaf comprising an electric motor and members for transmitting to the leaf the rotary movement of the motor shaft. Commonly, these transmission means comprise a rack disposed on and along the leaf, which is mechanically connected cooperatively with a pinion linked in rotation with the motor shaft.

 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.

 It has been proposed to connect the rack and the pinion so as to allow the need to break their connection, and thus authorize manual operation of the leaf. For this, the motor and its pinion are supported by a chassis composed of a couple of plates, the upper one directly supporting the motor and its pinion, the other lower anchored to the ground.

The plates are movable relative to each other between two positions, one in which the upper plate is in the high position to put the pinion in relation to the rack, the other in which the upper plate is in position low to break the relationship between the pinion and the rack. The upper plate rests on the lower plate via a ramp, and is locked in the high position by a latch. The movement in the lower position of the upper plate is controlled by a pull tab placed at a distance and connected to the latch by a cable. A traction exerted on the pull tab causes the unlocking between the two plates and the natural sliding, under the effect of the weight of the engine, of the upper plate along the ramp. Reference may in particular be made to patent FR2757560 (LE BRUN) which describes such a mechanism.

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 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 unlocking means and the guide means of the upper plate, constituted by the ramp, can be altered and cause a malfunction of the device. Furthermore, the conformation of the ramp initially induces a horizontal movement of translation of the upper plate. This movement is antagonistic to the immobilization of the motor shaft in the absence of electricity supply. It follows that the unlocking command is delicate and that the spontaneous movement of the upper plate along the ramp, when the unlocking is commanded, is uncertain. 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.

 The object of the present invention is to provide a reliable safety device for authorizing the operation of a motorized sliding leaf, in the event of an unexpected and / or programmed interruption of the supply of electricity to the motor member intended for its operation. . Another object is to propose such a device, the operation of which, in particular in the event of an emergency, does not preclude manual operation of the gate by unforeseen and / or security personnel, in particular firefighters.

 The device of the invention is of the aforementioned type comprising two load-bearing elements, the lower one constituting a base for the other upper which supports the drive member. The two carrier elements are movable relative to each other for alternately, between two positions, either to put the pinion in relation to the rack in the locked high position of the upper carrier element, or to break this relation by lowering this caused naturally under the effect of the weight of the drive member, following an operation of means for blocking the upper carrier element in the high position.

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 According to the present invention, such a device is recognizable in its generality in that the upper carrier element is locked in the high position, against the weight of the motor, by means of cooperating electromagnetic members, which are respectively supported by each. load-bearing elements, and at least one of which is kept activated from an autonomous electricity supply source. If necessary, a break in the supply of the electromagnetic member at least causes a lowering of the upper carrier element, and therefore a break in the relationship between the pinion and the rack.

 The control of the interruption of the electricity supply to the electromagnetic member is for example caused by a detection of an unexpected absence of electricity supply to the motor member, or by a detection of an incident, such as a fire, or by a voluntary order from a user.

 It will be noted that, according to various variants, the means for guiding the upper support element are indifferently, as regards the scope of the invention, of the type of any one of the types of guide comprising tilting and translation of the element superior carrier.

In the preferred case of guiding the upper carrier element by translation, that is equipped with a set of rods for guiding it on the lower carrier element. According to a first embodiment of these guide means, the rods are slidably mounted inside openings formed in the lower support element; according to a second embodiment of these guide means, the rods are connected to one end of at least one lever arm, which is carrying at its other end one of the cooperating electromagnetic members, and which is articulated on the lower support element between its two ends.

 The present invention will be better understood and details will become apparent from the description which will be made of preferred embodiments thereof, in relation to the figures of the appended plates, in which:

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 fig. 1 and fig. 2 are perspective illustrations of a device according to a first embodiment of the invention, respectively in exploded view and in assembled view, FIGS. 3 to fig. 5 are block diagrams successively illustrating the operation of a device of the invention illustrated in the preceding figures, FIGS. 6 and fig. 7 are block diagrams successively illustrating the operation of a device according to a second embodiment of the invention, FIGS. 8 and fig. 9 are partially cutaway perspective illustrations, which illustrate the operation of a device according to a third embodiment of the invention.

 In fig1 to fig. 5, a safety device, to authorize the manual operation of a motorized sliding 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 of 'emergency includes: a) the drive unit 2, fitted with means 4 for connection to the power supply network 6, b) a pinion 8 linked in rotation to a shaft 10 of the drive unit 2, for the transmission of movement of rotation of the latter to a rack 12 disposed on and along the leaf, c) a support chassis 14, 16 of the motor member 2. This chassis comprises a pair of load-bearing elements, the upper one 14 supporting the drive member 2, the other lower 16, which can be anchored to a frame 18 by fastening members 20, and which supports the upper element 14. The support of the upper element 14 by the lower element 16 is obtained by through means 22,44 for guiding the movement thereof 14 , between two extreme positions, under the natural effect of at least the weight of the motor 2. One of these positions, shown in FIGS. 2, fig. 3 and fig. 5, corresponds to an upper position of the upper element 14 and is in correspondence with a connection between the pinion 8 and the rack 12; the other position, shown in FIG. 4, corresponds to a low position of the upper element 14 in correspondence with a break in the relationship between the pinion 8 and the rack 12.

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 d) means 24, 26 for blocking the upper element in the high position, associated with means 28 for controlling their use to release the upper carrier element 14 and cause it to move naturally.

According to the invention, the locking means comprise at least a pair of cooperating electromagnetic members, such as 26, 24 respectively supported by the upper carrier element 14, for one
26, and by the lower carrying element 16, for the other 24. The device further comprises: e) an autonomous source of electricity supply 29 from at least one of the cooperating electromagnetic members 24, 26, for inducing their contact with each other so as to maintain the upper element in the high position, and f) a member 30 for breaking the supply of the electromagnetic member 24, 26 with electricity from the autonomous source 29, including setting work is placed under the control of the control means 28.

 These arrangements are such that the upper support element 14 is held in the high position (FIG. 3), by bringing them into contact and activating at least one of the electromagnetic members 24, 26, against the weight of the motor 2. The passage in the lower position of the upper support element 14 (fig. 4) results from a controlled interruption of the supply of electricity to the electromagnetic members 24, 26, to cause its natural displacement under the effect the weight of the motor 2.

 It will be noted that the autonomous source of electricity supply 29 of at least one of the electromagnetic members 24, 26 is advantageously constituted by a reserve of low voltage electrical energy, preferably associated with recharging means from the network d high voltage power supply.

 Preferably, the device further comprises means, called arming, of unequivocal maneuver, preferably manual, of the displacement of the upper carrier element 14 from the low position to the high position, for bringing the electromagnetic members 24 into contact, 26 between them, prior to their activation

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The arming means comprise, for example, an eccentric mechanism 32 operable from outside the chassis 14, 16 by a handle 34, which is connected to the eccentric 32 by means of an arm 36 articulated in rotation on the chassis, and more particularly on the lower carrier element 16. The eccentric 32 bears under the upper carrier element 14 for lifting it from an operation of the handle 34. It will be noted that when the electromagnetic elements 24, 26 are activated, the support of the eccentric 32 against the upper support element 14 ceases by a spontaneous return of the latter to the initial rest position, as soon as the operation of the handle 34 ceases by the user.
It will therefore be understood unequivocally that the operation of the arming means can only be brought about from the handle 34 for example, independently of the high or low position of the upper support element 14.

 It will be noted that the variants illustrated in FIGS. 6 to fig. 9 also includes, where appropriate, such rearming means, not shown in these figures.

 The control means 28 are in particular any at least one of the control means of the group of means comprising: * means for detecting the unexpected rupture of the power supply to the motor member, *. Means for fire detection, * .- a safety contactor, such as push button, photoelectric cells, inductive loop, or the like, * .- means of alert against unauthorized intrusion, * .- means for detecting a malfunction of means for programming the implementation of the drive member, and * -means for remote control.

 According to the different embodiments illustrated in the figures, the upper support element 14 comprises a shelf 38 carrying the drive member 2.

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 This tablet 38 is remotely connected to a carrier 40 of any of the electromagnetic members 24, 26 of the couple. The lower carrier element 16 comprises a carrier member 42 of the other electromagnetic member 26,24 of the torque. This carrier member 42 is interposed between the shelf 38 and the support member 40 of the upper carrier member 14, so as to place opposite each other the electromagnetic members 24, 26 of the torque.

 In the variant embodiment illustrated in FIGS. 1 to fig. 5, the guide means are of the sliding translation type. The upper support element 14 is slidably mounted vertically on the lower support element 16, by means of at least one rod 22 connecting one to the other the shelf 38 and the support member 40 of the element upper carrier 14. The rod 22 is guided through a corresponding opening 44 formed in the plate 42 of the lower carrier element 16.

 In the variant embodiment illustrated in FIGS. 8 and fig. 9, the guide means are of the translation type by lever arm. The tablet 38 of the upper support element 14 is supported by means of at least one lever arm 60 articulated 62 between its ends on the lower support element 16. This lever arm supports the element at its respective ends. upper carrier 14 by means of a set of rods, such as 64, on the one hand, and any one of the electromagnetic members of the couple on the other hand.

 In the variant embodiment illustrated in FIGS. 6 and fig. 7, the guide means are of the tilting type. The shelf 38 of the upper support element 14 is articulated 66 on the lower support element 16.

 Preferably, the device is provided with stop means, such as 68 in the variant illustrated in FIGS. 8 and fig. 9, in the lower position of the stroke of the upper carrier element 14, stop means which are advantageously adjustable in positioning

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More preferably, the lower support element 16 comprises means for positioning the height of the shelf 38 of the upper support element 14 relative to the frame 18.

 In the embodiment illustrated in FIGS. 1 and fig. 2, the lower carrying element 16 preferably has a generally U-shaped profile with folded edges 46. The upper wall of the U constitutes the plate 42, while the wings 48 with folded edges 46 of the U constitute a base, the edges of which folded 46 are perforated 50 to receive the fastening members 20 of the chassis 14,16 on the frame 18.

 The chassis 14, 16 preferably comprises positioning means adjustable in height of the upper element 14 relative to the frame 18. According to the embodiment illustrated in FIGS. 1 and fig. 2, the wings 48 of the lower carrying element 16 are each composed of two elementary walls 52 and 54. These 52,54 are juxtaposed and connected to one another by bolting 56, any one at least walls 52 and / or 54 comprising at least one elongated opening 58 for the passage of a bolt 56.

 It will generally be noted that the drive member 2 is preferably supported by the upper support element 14 by means of a set of plates, such as 60 and 62, which are fixed to the upper plate 38 of the upper support element 14, by bolting 64 for example or by welding.

 It will also be understood that the power of the electromagnetic members 24, 26 is at least sufficient to maintain the upper support element 14 in the high position against the cumulative weight of the latter and of the drive member 2, as well as if necessary. of the various elements associated with it.

 Finally, it will be noted in the exemplary embodiments of the device illustrated in FIGS. 1 to fig. 7, that the electromagnetic members 26, 24 are four in number, distributed in two pairs of two cooperating electromagnetic members, while in the embodiment of the device illustrated in FIGS. 8 and fig. 9, the electromagnetic members 26, 24 are two in number, distributed in a pair of two cooperating electromagnetic members.

Claims (3)

 1.-Safety device, to authorize the manual operation of a motorized sliding leaf in the event of an unexpected and / or programmed interruption of the supply of electricity to the motor unit intended for its operation, and / or in the event of emergency of the type of device comprising: g) the drive member (2), equipped with means (4) for connection to the electrical supply network (6), h) a pinion (8) linked in rotation to a shaft ( 10) of the drive member (2), for the transmission of the rotational movement of the latter to a rack (12) disposed on and along the leaf, i) a support frame for the drive member (2), the chassis comprising a pair of load-bearing elements, the upper one (14) which supports the driving member (2), the other lower one (16), which can be anchored to a frame (18) by fixing members (20 ) and which supports the upper element (14) by means of guiding the movement of the latter between two extreme positions, under the effect t natural at least the weight of the motor (2), one in which the upper element (14) is in the high position in correspondence with a connection between the pinion (8) and the rack (12), the other in which the upper element (16) is in the low position in correspondence with a break in the relationship between the pinion (8) and the rack (12), j) means for blocking the upper element (14 ) in the high position, associated with control means (28) of their implementation to release the upper carrier element and cause its natural displacement, characterized: in that the blocking means comprise at least one pair of electromagnetic members cooperants (24,26), respectively supported by the upper carrier element (14) and by the lower carrier element (16), the device further comprising: k) an autonomous source of electricity supply (29) of the '' at least one of the electromagnetic components (24,26), for ind uire their contact with each other so as to maintain the upper element (14) in the high position, <Desc / Clms Page number 10>  1) a member (30) for breaking the supply of electricity to the electromagnetic member (24, 26) from the autonomous source (29), the implementation of which is dependent on the control means ( 28), so that the upper support element (14) is held in the high position by bringing them into contact and activating at least one of the electromagnetic members (24, 26), against the weight of the motor (2), its passage into the low position resulting from a controlled interruption of the supply of electricity to the electromagnetic members (24, 26) to cause its natural displacement under the effect of the weight of the motor (2); 2.-Device according to claim 1, characterized: in that the means for guiding the upper support element are of the type of any one of the types of guide comprising translation and tilting; 3-Device according to any one of the preceding claims, characterized: in that it further comprises means (32, 34, 36), called arming, for unequivocal maneuvering of the displacement of the upper carrying element (14 ) from the low position to the high position, to bring the electromagnetic members (24, 26) into contact with one another before their activation;  4.-Device according to claim 3, characterized: in that the arming means comprise an eccentric mechanism (32), operable from outside the chassis (14,16) by a handle (34) which is connected to the eccentric by means of an arm (36) articulated in rotation on the frame (14,16), the eccentric (32) bearing under the upper support element (14) for the lifting thereof from an operation of the handle (34); <Desc / Clms Page number 11>  5-Device according to any one of the preceding claims, characterized: in that the control means (28) are at least any one of the control means of the group of means comprising means for detecting the unexpected rupture of power supply to the drive unit, fire detection means, a safety contactor, means to alert against unauthorized intrusion, means for detecting a malfunction of programming means the implementation of the drive member, and remote control means; 6-Device according to any one of the preceding claims, characterized in that the upper support element (14) comprises a shelf (38) carrying the drive member (2), which is connected (22,64) remotely to a carrier member (40) of any one (24) of the electromagnetic members (24,26) of the torque, and in that the lower carrier member (16) comprises a carrier member (42) of the other member electromagnetic (26) of the torque, this support member (42) being interposed between the shelf (38) and the support member (40) of the upper support element (14), so as to place one facing the 'other the electromagnetic organs (24,26) of the couple; 7.- Device according to claim 6, characterized: in that the guide means being of the sliding translation type, the upper support element (14) is slidably mounted vertically on the lower support element (16), by l 'intermediate of at least one rod (22) connecting to each other the shelf (38) and the carrier member (40) of the upper carrier element (14), said rod (22) being guided through a corresponding opening (44) formed in the plate (42) of the lower support element (16); <Desc / Clms Page number 12>  8.- Device according to claim 6, characterized: in that the guide means being of the translation type by lever arm, the shelf (38) of the upper carrier element (14) is supported by at least one lever arm (60) articulated (62) between its ends on the lower support element (16), said lever arm supporting at its respective ends the upper support element (14) by means of a set of rods (64) on the one hand, and any one of the electromagnetic members (24,26) of the couple on the other hand; 9.- Device according to claim 6, characterized: in that the guide means being of the tilting type, the shelf (38) of the upper support element (14) is articulated on the lower support element (16); 10.- Device according to any one of claims 6 to 9, characterized: in that the lower carrying element (16) comprises positioning means adjustable in height of the shelf (38) of the upper carrying element (14 ) relative to the frame (18).