EP0221826A1 - End stop device for automatically operating roller blinds, roller shutters and other lifting means with rollers - Google Patents

End stop device for automatically operating roller blinds, roller shutters and other lifting means with rollers Download PDF

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Publication number
EP0221826A1
EP0221826A1 EP86420248A EP86420248A EP0221826A1 EP 0221826 A1 EP0221826 A1 EP 0221826A1 EP 86420248 A EP86420248 A EP 86420248A EP 86420248 A EP86420248 A EP 86420248A EP 0221826 A1 EP0221826 A1 EP 0221826A1
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EP
European Patent Office
Prior art keywords
drum
nuts
angularly
nut
stroke
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86420248A
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German (de)
French (fr)
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EP0221826B1 (en
Inventor
Claude Georges
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Simu SAS
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Simu SAS
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Publication of EP0221826A1 publication Critical patent/EP0221826A1/en
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Publication of EP0221826B1 publication Critical patent/EP0221826B1/en
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • E06B9/88—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for limiting unrolling
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E06B2009/6809—Control
    • E06B2009/6872—Control using counters to determine shutter position
    • E06B2009/6881—Mechanical counters

Definitions

  • the present invention relates to limit switch devices intended to equip blinds, roller shutters or other lifting devices with a view to ensuring, in combination with an electric switch with manual actuation, the automatic stopping of the rotating drum for the moving and unwinding of the movable member of said devices.
  • devices of this type include two threaded rods which are angularly linked to the rotating drum and on each of which is engaged a sliding nut, angularly immobilized so that the rotation of the aforementioned drum and the rods causes the longitudinal displacement of said nuts along them.
  • Each of these sliding nuts is associated with a stop which is actuated when the envisaged nut arrives at one of the ends of its alternating travel and which, by means of a push-button, acts on an electrical contactor inserted on the circuit. power supply to the drum drive motor so as to stop it.
  • Things are arranged so that the two sliding nuts move in opposite directions, so that with an adequate initial positioning of both of these two nuts, it can be obtained that the drum stops automatically when the movable member (canvas, apron or the like) of the controlled device arrives at either end of its travel.
  • the difficulty therefore lies in the initial adjustment of the device as a function of the total stroke of the movable member, it being observed that in almost all cases, the nuts are practically inaccessible, the device being most often housed inside the rotating drum.
  • the limit switches of the above-mentioned type been made to comprise two independent clutch release mechanisms, the operation of which by the installer makes it possible, on the one hand, to temporarily dissociate the threaded rod corresponding drum, on the other hand to act on the stop or the push associated with it in order to close the corresponding contactor.
  • a difficulty remains: in the event that he made a false maneuver during the initial adjustment or if he wishes to modify it thereafter, the operator ignores the exact positioning of the sliding nuts, so that the new adjustment requires a succession of particularly delicate maneuvers.
  • the present invention mainly intends to remedy, which essentially consists in associating with each of the two sliding nuts an unlocking mechanism capable of temporarily stopping the angular immobilization of the nut considered so that under the effect of elastic return means, the latter rotates relative to its threaded rod and thus returns until the end of its travel for which it bears against its stop.
  • each of the two unlocking mechanisms operates, in addition to the release of the nut associated therewith, the actuation of the electrical control switch, so that the drum drive motor can be supplied despite the fact that the nut is pressed against its stop.
  • each unlocking mechanism advantageously comprises a cage which is made angularly integral with the corresponding sliding nut while allowing the longitudinal displacement thereof.
  • This cage is angularly immobilized by a clamp placed under the dependence of an operating part with angular or axial movement, provided easily accessible as in the case of the declutching mechanism of conventional devices.
  • the end-of-travel device is mounted inside the rotating drum 1 which provides for the unwinding and unwinding of the fabric of a blind device.
  • This drum 1 is driven in rotation by an electric motor (not shown) which is itself enclosed by said drum and whose manual control in both directions of rotation is ensured by an inverter switch suitably connected to the supply circuit. electric of said motor, the limit switch device shown being intended to automatically cut the power to this motor when the fabric arrives at one or the other of the two ends of its race.
  • the device is entirely housed inside a tubular frame 2 which at one of its ends (on the left in fig. 1 and 2) is supported by a fixed bush 3, which contains a reducing mechanism whose entry is angularly linked to the drum 1.
  • the output shaft of this mechanism drives, in opposite directions, two pinions 4 wedged on threaded rods 5 and 6 oriented parallel to one another.
  • On each rod 5 and 6 is engaged a sliding nut 7 and it is understood that if it is assumed that each nut 7 is angularly retained, the rotation of the two rods in opposite directions causes the longitudinal displacement of said nuts themselves in opposite directions (an identical result would be obtained using two threaded rods rotating in the same direction but provided with opposite threads).
  • Each of the two nuts 7 cooperates, at one end of its longitudinal travel (on the left in FIGS. 1 and 2), with a stop 8 engaged in sliding action on a smooth part with smaller diameter of the corresponding rod 5, a return spring 9 being associated with said burée 8.
  • Each stop 8 is integral with a crank pin 8 a which is made integral, for example by means of a pin, with a plunger 10 oriented longitudinally, parallel to the two rods Threaded 5 and 6.
  • Each tappet 10 is associated, opposite the socket 3, with a tilting paddle 11 for actuating a microswitch 12 connected to the electrical supply of the drive motor so as to open the circuit thereof when the pallet 11 is not pushed back by the corresponding pusher 10.
  • each of the two sliding nuts 7 is ensured by a cage 13 of circular section.
  • the internal wall of each cage 13 comprises, over at least part of its length, a longitudinal notch 13 a in which is engaged a projection or lateral tooth of the nut 7 envisaged.
  • the cages 13 are immobilized angularly, it is understood that the cooperation of the aforementioned tooth and the slot 13 prohibits the nut 7 turn on itself while allowing it to move axially along the corresponding threaded rod 5 or 6.
  • each sliding nut 7 is associated with a spring 14 which is engaged on the rod considered between the nut 7 and the annular bottom of the cage 13 envisaged. This spring 14 is thus compressed when the nut 7 with which it is associated moves away from the bush 3 (displacement from left to right in FIG. 1).
  • each cage 13 The angular immobilization of each cage 13 is operated by a clamp mechanism comprising a helical spring 15 (fig. 3) which is wound on the thinned end of said cage turned towards the side of the micro-contacts 12.
  • a clamp mechanism comprising a helical spring 15 (fig. 3) which is wound on the thinned end of said cage turned towards the side of the micro-contacts 12.
  • One of the ends of each spring 15 is moored at a fixed point formed by a cylindrical flange 16 a secured to a transverse partition 16 of the tubular frame 2, while the opposite end is introduced into a notch 17 a made in an operating bar 17, oriented parallel to the pushers 10 and to the threaded rods 5 and 6.
  • each spring 15 on the end of the corresponding cage 13 well ensures the angular retention of the latter.
  • these turns deviate and angularly release the cage 13 which can then rotate on itself, the spring 15 thus playing the role of an unlocking mechanism for the nut 7 associated with it.
  • each bar 17 is equipped with a small operating lever 18, accessible from the outside of the drum 1 of the blind device.
  • the opposite end of each of these bars, supported by the partition 16, carries, beyond the latter, a sloping ring which cooperates with an inclined shoe integral with one or the other of the two pallets 11, so that the angular operation of each of the bars 17 simultaneously controls the spring 15 when unlocking and actuating the corresponding micro-contact 12.
  • the installer operates angularly one of the two levers 18, which has the effect of releasing the corresponding cage 13 and actuating the micro-contact 12 envisaged.
  • the electric motor of the blind device can be powered by the manual change-over switch in order to bring the fabric to the desired end of travel.
  • each lever 18 causes, not only the control of the corresponding micro-contact 12 by allowing the supply of the electric motor through the manual change-over switch, but also that of the clamp mechanism associated with the cage 13 envisaged.
  • the release of this cage 13 by opening the helical spring 15 operates the automatic return of the nut towards its stop 8 by rotation of said nut and of its cage 13 around the threaded rod 5 or 6; this return is ensured under the effect of the compressed spring 14 during the preceding stroke of the nut considered and it can occur as a result of the rapid pitch of the threading of the rods 5 and 6.
  • actuation of the contactors 11 can be carried out independently of resetting to 0 using the pushers 10, for example by means of an appropriate circuit.

Abstract

1. End-of-stroke device for automatically stopping the drum (1) intended for winding and unwinding the mobile member of a blind, roller shutter or other lifting apparatus, of the type comprising two threaded rods (5, 6) which are angularly connected to the drum (1) and on which are engaged two sliding nuts (7) retained angularly so that the rotation of said rods effects, in opposite directions, the axial displacement of these nuts which, once suitably positioned, successively assume a fixed end of stroke (position 0), provoking actuation of the contactors (12) adapted to ensure stop of the drum at one and the other of the two ends desired for the stroke of the mobile member, characterized in that with each of the two sliding nuts (7) is associated an unlocking mechanism (13-15-17) adapted momentarily to cause angular immobilization of the nut (7) in question to cease so that the latter rotates with respect to its threaded rod (5, 6) under the effect of elastic means (14) and thus returns as far as the fixed end-of-stroke with a view to a new adjustment.

Description

La présente invention a trait aux dispositifs de fins de course destinés à équiper les stores, volets roulants ou autres appareils de levage en vue d'assurer, en combinaison avec un interrupteur-inverseur électrique à actionnement manuel, l'arrêt automatique du tambour tournant pour l'envidage et le dévidage de l'organe mobile desdits appareils.The present invention relates to limit switch devices intended to equip blinds, roller shutters or other lifting devices with a view to ensuring, in combination with an electric switch with manual actuation, the automatic stopping of the rotating drum for the moving and unwinding of the movable member of said devices.

On sait que dans leur construction classique, les dispositifs de ce type comprennent deux tiges filetées qui sont liées angulairement au tambour tournant et sur chacune desquelles est engagé un écrou baladeur, immobilisé angulairement de façon à ce que la rotation du tambour précité et des tiges provoque le déplacement longitudinal desdits écrous le long de celles-ci. A chacun de ces écrous baladeurs est associée une butée qui est actionnée lorsque l'écrou envisagé arrive à l'une des extrémités de sa course alternative et qui, par l'intermédiaire d'un poussoir, agit sur un contacteur électrique inséré sur le circuit d'alimentation du moteur d'entraînement du tambour de façon à stopper celui-ci.We know that in their conventional construction, devices of this type include two threaded rods which are angularly linked to the rotating drum and on each of which is engaged a sliding nut, angularly immobilized so that the rotation of the aforementioned drum and the rods causes the longitudinal displacement of said nuts along them. Each of these sliding nuts is associated with a stop which is actuated when the envisaged nut arrives at one of the ends of its alternating travel and which, by means of a push-button, acts on an electrical contactor inserted on the circuit. power supply to the drum drive motor so as to stop it.

Les choses sont agencées de sorte que les deux écrous baladeurs se déplacent dans des directions opposées, si bien que moyennant un positionnement initial adéquat de l'un et de l'autre de ces deux écrous, on peut obtenir que le tambour s'arrête automa­tiquement lorsque l'organe mobile (toile, tablier ou analogue) de l'appareil commandé arrive à l'une et à l'autre des extrémités de sa course.Things are arranged so that the two sliding nuts move in opposite directions, so that with an adequate initial positioning of both of these two nuts, it can be obtained that the drum stops automatically when the movable member (canvas, apron or the like) of the controlled device arrives at either end of its travel.

La difficulté réside donc dans le réglage initial du dispositif en fonction de la course totale de l'organe mobile, étant observé que dans la quasi totalité des cas, les écrous sont pratiquement inaccessibles, le dispositif étant le plus souvent logé à l'intérieur du tambour tournant. Aussi, afin de faciliter l'opération de réglage, a-t-on fait comporter aux dispositifs de fins de course du genre susvisé deux mécanismes indépendants de débrayage dont la manoeuvre par l'installateur permet d'une part de dissocier momentanément la tige filetée correspondante du tambour, d'autre part d'agir sur la butée ou le poussoir associé à celle-ci en vue de fermer le contacteur correspondant.The difficulty therefore lies in the initial adjustment of the device as a function of the total stroke of the movable member, it being observed that in almost all cases, the nuts are practically inaccessible, the device being most often housed inside the rotating drum. Also, in order to facilitate the adjustment operation, have the limit switches of the above-mentioned type been made to comprise two independent clutch release mechanisms, the operation of which by the installer makes it possible, on the one hand, to temporarily dissociate the threaded rod corresponding drum, on the other hand to act on the stop or the push associated with it in order to close the corresponding contactor.

On conçoit dès lors que si le constructeur prend soin de livrer ses appareils avec les deux écrous baladeurs en position débrayée et en appui contre leur butée, il suffit à l'installateur de manoeuvrer l'interrupteur-inverseur dans un sens pour amener l'organe mobile à l'une des extrémités désirées pour sa course et de remettre les choses en état en actionnant le mécanisme de débrayage, l'opération étant répétée de la même manière pour l'extrémité opposée de la course de l'organe mobile. En d'autres termes, c'est en amenant successivement l'organe mobile aux deux extrémités de sa course à l'aide du moteur et en agissant à chaque fois sur le mécanisme de débrayage correspondant qu'on opère le réglage initial du dispositif de fins de course.It is therefore understandable that if the manufacturer takes care to deliver his devices with the two sliding nuts in the disengaged position and pressing against their stop, the installer only has to operate the reversing switch in one direction to bring the member movable at one of the ends desired for its stroke and to restore things by actuating the declutching mechanism, the operation being repeated in the same way for the opposite end of the stroke of the movable member. In other words, it is by successively bringing the movable member to the two ends of its travel using the motor and by acting each time on the corresponding declutching mechanism that the initial adjustment of the limit switches.

Une difficulté subsiste : dans le cas où il a effectué une fausse manoeuvre lors du réglage initial ou s'il désire modifier par la suite celui-ci, l'opérateur ignore le positionnement exact des écrous baladeurs, si bien que le nouveau réglage requiert une succession de manoeuvres particulièrement délicates.A difficulty remains: in the event that he made a false maneuver during the initial adjustment or if he wishes to modify it thereafter, the operator ignores the exact positioning of the sliding nuts, so that the new adjustment requires a succession of particularly delicate maneuvers.

C'est à cet inconvénient qu'entend principalement remédier la présente invention, laquelle consiste pour l'essentiel à associer à chacun des deux écrous baladeurs un mécanisme de déverrouillage apte à faire momentanément cesser l'immobilisation angulaire de l'écrou considéré afin que sous l'effet de moyens élastiques de rappel, celui-ci tourne par rapport à sa tige filetée et revienne de la sorte jusqu'à la fin de sa course pour laquelle il est en appui contre sa butée.It is to this drawback that the present invention mainly intends to remedy, which essentially consists in associating with each of the two sliding nuts an unlocking mechanism capable of temporarily stopping the angular immobilization of the nut considered so that under the effect of elastic return means, the latter rotates relative to its threaded rod and thus returns until the end of its travel for which it bears against its stop.

Pour qu'un tel système puisse fonctionner en pratique, il est évidemment nécessaire de conférer aux tiges filetées un pas rapide, propre à permettre aux écrous de se déplacer longitudina­lement en tournant sous l'effet des moyens élastiques de rappel. Ces derniers peuvent être très simplement réalisés sous la forme d'un ressort engagé autour de la tige filetée pour prendre appui d'une part contre un point fixe, d'autre part contre la face transversale correspondante de l'écrou, lequel ressort est comprimé lorsque cet écrou s'éloigne de sa butée.In order for such a system to function in practice, it is obviously necessary to give the threaded rods a rapid pitch, capable of allowing the nuts to move longitudinally while rotating under the effect of the elastic return means. The latter can very simply be produced in the form of a spring engaged around the threaded rod to bear on the one hand against a fixed point, on the other hand against the corresponding transverse face of the nut, which spring is compressed when this nut moves away from its stop.

Par ailleurs, il est bien entendu indispensable que chacun des deux mécanismes de déverrouillage opère, en plus de la libération de l'écrou qui lui est associé, l'actionnement du contacteur électrique de commande, afin que le moteur d'entraînement du tambour puisse être alimenté en dépit du fait que l'écrou est appliqué contre sa butée.Furthermore, it is of course essential that each of the two unlocking mechanisms operates, in addition to the release of the nut associated therewith, the actuation of the electrical control switch, so that the drum drive motor can be supplied despite the fact that the nut is pressed against its stop.

Sur le plan structurel, chaque mécanisme de déverrouillage comprend avantageusement une cage qui est rendue angulairement solidaire de l'écrou baladeur correspondant tout en permettant le déplacement longitudinal de celui-ci. Cette cage est immobilisée angulairement par une pince placée sous la dépendance d'une pièce de manoeuvre à déplacement angulaire ou axial, prévue aisément accessible comme dans le cas du mécanisme de débrayage des dispositifs classiques.Structurally, each unlocking mechanism advantageously comprises a cage which is made angularly integral with the corresponding sliding nut while allowing the longitudinal displacement thereof. This cage is angularly immobilized by a clamp placed under the dependence of an operating part with angular or axial movement, provided easily accessible as in the case of the declutching mechanism of conventional devices.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :

  • Fig. 1 et 2 sont deux coupes longitudinales schématiques d'un dispositif suivant l'invention.
  • Fig. 3 est une coupe transversale agrandie de ce dispositif suivant le plan indiqué en III-III en fig. 1, sur laquelle on a fait apparaître en I-I et II-II les plans de coupe des fig. 1 et 2.
The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:
  • Fig. 1 and 2 are two schematic longitudinal sections of a device according to the invention.
  • Fig. 3 is an enlarged cross section of this device along the plane indicated in III-III in FIG. 1, on which we have shown in II and II-II the section planes of FIGS. 1 and 2.

Sur ce dessin, on a supposé que le dispositif de fins de course étant monté à l'intérieur du tambour tournant 1 qui assure l'envidage et le dévidage de la toile d'un dispositif de store. Ce tambour 1 est entraîné en rotation par un moteur électrique (non représenté) qui est lui-même renfermé par ledit tambour et dont la commande manuelle dans les deux sens de rotation est assurée par un interrrupteur-inverseur conven­nablement branché sur le circuit d'alimentation électrique dudit moteur, le dispositif de fins de course représenté étant destiné à couper automatiquement l'alimentation de ce moteur lorsque la toile arrive à l'une ou à l'autre des deux extrémités de sa course.In this drawing, it has been assumed that the end-of-travel device is mounted inside the rotating drum 1 which provides for the unwinding and unwinding of the fabric of a blind device. This drum 1 is driven in rotation by an electric motor (not shown) which is itself enclosed by said drum and whose manual control in both directions of rotation is ensured by an inverter switch suitably connected to the supply circuit. electric of said motor, the limit switch device shown being intended to automatically cut the power to this motor when the fabric arrives at one or the other of the two ends of its race.

Le dispositif est entièrement logé à l'intérieur d'un bâti tubulaire 2 qui à l'une de ses extrémités (à gauche en fig. 1 et 2) est supporté par une douille fixe 3, laquelle renferme un mécanisme réducteur dont l'entrée est liée angulairement au tambour 1. L'arbre de sortie de ce mécanisme entraîne, dans des directions opposées, deux pignons 4 calés sur des tiges filetées 5 et 6 orientées parallèlement l'une à l'autre. Sur chaque tige 5 et 6 est engagé un écrou baladeur 7 et l'on comprend que si l'on suppose que chaque écrou 7 est retenu angulairement, la rotation des deux tiges dans des directions opposées provoque le déplacement longitudinal desdits écrous eux-mêmes dans des directions opposées (un résultat identique serait obtenu à l'aide de deux tiges filetées tournant dans le même sens mais pourvues de filets opposés).The device is entirely housed inside a tubular frame 2 which at one of its ends (on the left in fig. 1 and 2) is supported by a fixed bush 3, which contains a reducing mechanism whose entry is angularly linked to the drum 1. The output shaft of this mechanism drives, in opposite directions, two pinions 4 wedged on threaded rods 5 and 6 oriented parallel to one another. On each rod 5 and 6 is engaged a sliding nut 7 and it is understood that if it is assumed that each nut 7 is angularly retained, the rotation of the two rods in opposite directions causes the longitudinal displacement of said nuts themselves in opposite directions (an identical result would be obtained using two threaded rods rotating in the same direction but provided with opposite threads).

Chacun des deux écrous 7 coopère, à l'une des extrémités de sa course longitudinale (à gauche en fig. 1 et 2), avec une butée 8 engagée à coulissement sur une partie lisse à plus petit diamètre de la tige 5 correspondante, un ressort de rappel 9 étant associé à ladite burée 8. Chaque butée 8 est solidaire d'un maneton 8a qui est rendu solidaire, par exemple à l'aide d'une goupille, d'un poussoir 10 orienté longitudinalement, parallèlement aux deux tiges filetées 5 et 6. A chaque poussoir 10 est associée, à l'opposé de la douille 3, une palette basculante 11 pour l'actionnement d'un micro-contact 12 branché sur l'alimentation électrique du moteur d'entraînement de façon à ouvrir le circuit de celui-ci lorsque la palette 11 n'est pas repousée par le poussoir 10 correspondant.Each of the two nuts 7 cooperates, at one end of its longitudinal travel (on the left in FIGS. 1 and 2), with a stop 8 engaged in sliding action on a smooth part with smaller diameter of the corresponding rod 5, a return spring 9 being associated with said burée 8. Each stop 8 is integral with a crank pin 8 a which is made integral, for example by means of a pin, with a plunger 10 oriented longitudinally, parallel to the two rods Threaded 5 and 6. Each tappet 10 is associated, opposite the socket 3, with a tilting paddle 11 for actuating a microswitch 12 connected to the electrical supply of the drive motor so as to open the circuit thereof when the pallet 11 is not pushed back by the corresponding pusher 10.

La retenue angulaire de chacun des deux écrous baladeurs 7 est assurée par une cage 13 à section circulaire. Comme montré en fig. 1, la paroi interne de chaque cage 13 comporte, sur une partie au moins de sa longueur, une entaille longitudinale 13a dans laquelle est engagée une saillie ou dent latérale de l'écrou 7 envisagé. Si l'on suppose que les cages 13 sont immobilisées angulairement, on comprend que la coopération de la dent précitée et de l'entaille 13a interdit à l'écrou 7 de tourner sur lui-même tout en lui permettant de se déplacer axialement le long de la tige filetée 5 ou 6 correspondante.The angular retention of each of the two sliding nuts 7 is ensured by a cage 13 of circular section. As shown in fig. 1, the internal wall of each cage 13 comprises, over at least part of its length, a longitudinal notch 13 a in which is engaged a projection or lateral tooth of the nut 7 envisaged. Assuming that the cages 13 are immobilized angularly, it is understood that the cooperation of the aforementioned tooth and the slot 13 prohibits the nut 7 turn on itself while allowing it to move axially along the corresponding threaded rod 5 or 6.

Il convient d'observer que le pas de la partie filetée de chaque tige 5 ou 6 est très rapide (filets très inclinés par rapport à l'axe), et qu'à chaque écrou baladeur 7 est associé un ressort 14 qui est engagé sur la tige considérée entre l'écrou 7 et le fond annulaire de la cage 13 envisagée. Ce ressort 14 est ainsi comprimé lorsque l'écrou 7 auquel il est associé s'éloigne de la douille 3 (déplacement de gauche à droite en fig. 1).It should be observed that the pitch of the threaded part of each rod 5 or 6 is very rapid (threads very inclined relative to the axis), and that each sliding nut 7 is associated with a spring 14 which is engaged on the rod considered between the nut 7 and the annular bottom of the cage 13 envisaged. This spring 14 is thus compressed when the nut 7 with which it is associated moves away from the bush 3 (displacement from left to right in FIG. 1).

L'immobilisation angulaire de chaque cage 13 est opérée par un mécanisme de pince comprenant un ressort hélicoïdal 15 (fig. 3) qui est enroulé sur l'extrémité amincie de ladite cage tournée du côté des micro-contacts 12. L'une des extrémités de chaque ressort 15 est amarrée à un point fixe formé par une bride cylindrique 16a solidaire d'une cloison transversale 16 du bâti tubulaire 2, tandis que l'extrémité opposée est introduite dans une entaille 17a pratiquée dans une barrette de manoeuvre 17, orientée parallèlement aux poussoirs 10 et aux tiges filetées 5 et 6.The angular immobilization of each cage 13 is operated by a clamp mechanism comprising a helical spring 15 (fig. 3) which is wound on the thinned end of said cage turned towards the side of the micro-contacts 12. One of the ends of each spring 15 is moored at a fixed point formed by a cylindrical flange 16 a secured to a transverse partition 16 of the tubular frame 2, while the opposite end is introduced into a notch 17 a made in an operating bar 17, oriented parallel to the pushers 10 and to the threaded rods 5 and 6.

La pression radiale appliquée par les spires de chaque ressort 15 sur l'extrémité de la cage 13 correspondante assure bien la retenue angulaire de cette dernière. Par contre, lorsqu'on fait pivoter la barrette 17 envisagée, ces spires s'écartent et libèrent angulairement la cage 13 qui peut alors tourner sur elle-même, le ressort 15 jouant ainsi le rôle d'un mécanisme de déverrouillage pour l'écrou 7 qui lui est associé.The radial pressure applied by the turns of each spring 15 on the end of the corresponding cage 13 well ensures the angular retention of the latter. On the other hand, when the envisaged bar 17 is pivoted, these turns deviate and angularly release the cage 13 which can then rotate on itself, the spring 15 thus playing the role of an unlocking mechanism for the nut 7 associated with it.

A l'opposé du ressort ou pince 15, chaque barrette 17 est équipée d'un petit levier de manoeuvre 18, accessible depuis l'extérieur du tambour 1 du dispositif de store. L'extrémité opposée de chacune de ces barrettes, supportée par la cloison 16, porte, au-delà de celle-ci, une bague pentée qui coopère avec un sabot incliné solidaire de l'une ou de l'autre des deux palettes 11, de façon à ce que la manoeuvre angulaire de chacune des barrettes 17 assure simultanément la commande du ressort 15 au déverrouillage et l'actionnement du micro-­contact 12 correspondant.Opposite the spring or clamp 15, each bar 17 is equipped with a small operating lever 18, accessible from the outside of the drum 1 of the blind device. The opposite end of each of these bars, supported by the partition 16, carries, beyond the latter, a sloping ring which cooperates with an inclined shoe integral with one or the other of the two pallets 11, so that the angular operation of each of the bars 17 simultaneously controls the spring 15 when unlocking and actuating the corresponding micro-contact 12.

Dès lors, le fonctionnement et le mode d'utilisation du dispositif de fins de course se déduisent aisément des explica­tions qui précèdent.Consequently, the operation and the mode of use of the limit switch device can easily be deduced from the foregoing explanations.

Si lors de la première installation du dispositif de store les deux écrous baladeurs 7 sont supposés se trouver à la position 0 correspondant à l'appui desdits écrous contre leur butée 8, pour procéder au réglage de la prmière fin de course, l'installateur manoeuvre angulairement l'un des deux leviers 18, ce qui a pour effets de libérer la cage 13 correspondante et d'actionner le micro-contact 12 envisagé. Le moteur électrique du dispositif de store peut être alimenté par l'interrupteur-inverseur manuel en vue d'amener la toile jusqu'à la fin de course désirée.If during the first installation of the blind device the two sliding nuts 7 are assumed to be in position 0 corresponding to the pressing of said nuts against their stop 8, to adjust the first limit switch, the installer operates angularly one of the two levers 18, which has the effect of releasing the corresponding cage 13 and actuating the micro-contact 12 envisaged. The electric motor of the blind device can be powered by the manual change-over switch in order to bring the fabric to the desired end of travel.

Au cours de ce fonctionnement, l'écrou baladeur 7 de la cage 13 qui est restée immobilisée angulairement s'est déplacé le long de sa tige filetée 5 ou 6 en comprimant le ressort 14 qui lui est associé. Cet écrou se trouve positionné et l'installateur peut ramener le levier 18 à la position normale de fonctionnement.During this operation, the sliding nut 7 of the cage 13 which has remained angularly immobilized has moved along its threaded rod 5 or 6 by compressing the spring 14 which is associated with it. This nut is positioned and the installer can return the lever 18 to the normal operating position.

Les opérations sont répétées de la même manière pour la fin de course opposée, c'est-à-dire manoeuvre de l'autre levier 18, actionnement en sens inverse de l'interrupteur-inverseur et retour du levier 18 en position normale. Les deux écrous 7 sont alors positionnés et couperont automatiquement l'alimentation du moteur électrique chaque fois qu'ils viendront en appui contre leur butée 8, de la même manière que dans les dispositifs de fins de course classiques.The operations are repeated in the same way for the opposite limit switch, that is to say operation of the other lever 18, actuation in the opposite direction of the reversing switch and return of the lever 18 in the normal position. The two nuts 7 are then positioned and will automatically cut off the power to the electric motor each time they come to bear against their stop 8, in the same manner as in conventional limit switch devices.

En cas d'erreur ou de fausse-manoeuvre au cours des opérations de réglage, ou si le dispositif de store doit après démontage être installé sur une fenêtre présentant des dimensions qui impliquent des fins de course différentes pour la toile, il suffit à l'opérateur de manoeuvrer les deux leviers 18 pour remettre les écrous baladeurs à la position 0, c'est-à-dire en appui contre leur butée 8, et être en mesure de procéder à un nouveau positionnement identique à celui décrit ci-dessus.In the event of an error or false operation during the adjustment operations, or if the blind device must, after disassembly, be installed on a window having dimensions which imply different limit switches for the fabric, it is sufficient to operator to operate the two levers 18 to return the sliding nuts to position 0, that is to say resting against their stop 8, and be able to carry out a new positioning identical to that described above.

En effet, l'actionnement angulaire de chaque levier 18 provoque, non seulement la commande du micro-contact 12 correspondant en permettant l'alimentation du moteur électrique à travers l'interrupteur-inverseur manuel, mais également celle du mécanisme de pince associé à la cage 13 envisagée. La libération de cette cage 13 par ouverture du ressort hélicoïdal 15 opère le retour automatique de l'écrou en direction de sa butée 8 par rotation dudit écrou et de sa cage 13 autour de la tige filetée 5 ou 6 ; ce retour est assuré sous l'effet du ressort 14 comprimé lors de la course précédente de l'écrou considéré et il peut intervenir par suite du pas rapide du filetage des tiges 5 et 6.Indeed, the angular actuation of each lever 18 causes, not only the control of the corresponding micro-contact 12 by allowing the supply of the electric motor through the manual change-over switch, but also that of the clamp mechanism associated with the cage 13 envisaged. The release of this cage 13 by opening the helical spring 15 operates the automatic return of the nut towards its stop 8 by rotation of said nut and of its cage 13 around the threaded rod 5 or 6; this return is ensured under the effect of the compressed spring 14 during the preceding stroke of the nut considered and it can occur as a result of the rapid pitch of the threading of the rods 5 and 6.

Il va de soi qu'on pourrait imaginer d'autres moyens pour opérer l'immobilisation angulaire des cages 13 et la libération de celles-ci sous l'effet des barrettes 17. On notera que ces dernières sont susceptibles d'être manoeuvrées axialement au lieu et place de la commande angulaire sus-mentionnée.It goes without saying that one could imagine other means for operating the angular immobilization of the cages 13 and the release of these under the effect of the bars 17. It will be noted that the latter are capable of being operated axially at place and place of the above-mentioned angular control.

On conçoit également que l'actionnement des contacteurs 11 peut être réalisé indépendemment de la remise à 0 à l'aide des poussoirs 10, par exemple par le moyen d'un circuit approprié.It is also understood that the actuation of the contactors 11 can be carried out independently of resetting to 0 using the pushers 10, for example by means of an appropriate circuit.

Claims (4)

1. Dispositif de fins de course pour l'arrêt automatique du tambour (1) destiné à l'enroulement et au dévidement de l'organe mobile d'un store, volet roulant ou autre appareil de levage, du genre comprenant deux tiges filetées (5, 6) qui sont liées angulairement au tambour (1) et sur lesquelles sont engagés deux écrous baladeurs (7) retenus angulairement de façon à ce que la rotation desdites tiges opère, dans des directions opposées, le déplacement axial de ces écrous qui une fois convenablement positionnés viennent successivement affecter une fin de course fixe (position 0) en provoquant l'actionnement des contacteurs (12) propres à assurer l'arrêt du tambour à l'une et à l'autre des deux extrémités désirées pour la course de l'organe mobile, caractérisé en ce qu'à chacun des deux écrous baladeurs (7) est associé un mécanisme de déverrouillage (13-15-17) apte à faire momentanément cesser l'immobilisation angulaire de l'écrou (7) considéré afin que celui-ci tourne par rapport à sa tige filetée (5, 6) sous l'effet de moyens élastiques (14) et revienne ainsi jusqu'à la fin de course fixe en vue d'un nouveau réglage.1. Limit switch device for automatically stopping the drum (1) intended for winding and unwinding the movable member of a blind, rolling shutter or other lifting device, of the type comprising two threaded rods ( 5, 6) which are angularly linked to the drum (1) and on which are engaged two sliding nuts (7) angularly retained so that the rotation of said rods operates, in opposite directions, the axial displacement of these nuts which a once suitably positioned successively affect a fixed end position (position 0) by causing the actuation of the contactors (12) capable of ensuring that the drum stops at either of the two ends desired for the travel of the movable member, characterized in that each of the two sliding nuts (7) is associated with an unlocking mechanism (13-15-17) able to temporarily stop the angular immobilization of the nut (7) considered in order that this one turns relative to its tig e threaded (5, 6) under the effect of elastic means (14) and thus returns to the fixed end of travel for a new adjustment. 2. Dispositif suivant la revendication 1, caractérisé en ce que chaque tige filetée (5, 6) comporte un filetage à pas rapide.2. Device according to claim 1, characterized in that each threaded rod (5, 6) has a thread with rapid pitch. 3. Dispositif suivant l'une quelconque des revendications 1 et 2, caractérisé en ce que chaque écrou baladeur (7) est monté à l'intérieur d'une cage (13) dont il est rendu angulairement solidaire et qui est immobilisée angulairement à travers un mécanisme de pince (15) actionné à l'aide d'une barrette (17) accessible depuis l'extérieur de l'appareil de levage.3. Device according to any one of claims 1 and 2, characterized in that each sliding nut (7) is mounted inside a cage (13) of which it is made angularly integral and which is immobilized angularly through a clamp mechanism (15) actuated by means of a bar (17) accessible from outside the lifting device. 4. Dispositif suivant la revendication 3, caractérisé en ce que le mécanisme de pince est formé par un ressort hélicoïdal (15) dont les spires s'enroulent autour de la cage (13) et dont les extrémités sont attachées l'une à la barrette d'action­nement (17), l'autre en un point fixe (16a).4. Device according to claim 3, characterized in that the clamp mechanism is formed by a helical spring (15) whose turns are wound around the cage (13) and whose ends are attached one to the bar actuation (17), the other at a fixed point (16 a ).
EP19860420248 1985-10-09 1986-10-09 End stop device for automatically operating roller blinds, roller shutters and other lifting means with rollers Expired EP0221826B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8515160A FR2588308B1 (en) 1985-10-09 1985-10-09 LIMIT SWITCHING DEVICE FOR THE AUTOMATIC CONTROL OF BLINDS, ROLLER SHUTTERS OR OTHER LIFTING DEVICES WITH ROTATING DRUM
FR8515160 1985-10-09

Publications (2)

Publication Number Publication Date
EP0221826A1 true EP0221826A1 (en) 1987-05-13
EP0221826B1 EP0221826B1 (en) 1989-03-08

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Application Number Title Priority Date Filing Date
EP19860420248 Expired EP0221826B1 (en) 1985-10-09 1986-10-09 End stop device for automatically operating roller blinds, roller shutters and other lifting means with rollers

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EP (1) EP0221826B1 (en)
JP (1) JPS62284880A (en)
DE (1) DE3662289D1 (en)
ES (1) ES2007307B3 (en)
FR (1) FR2588308B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371170A1 (en) * 1988-11-30 1990-06-06 A.S.A. Motoriduttori S.N.C. Rolling device for rolling elements such as blinds, curtains, awnings or the like
CN108798099A (en) * 2018-07-10 2018-11-13 合肥市神雕起重机械有限公司 A kind of flexible sun-shading mechanism for intelligent outdoor parking space

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8888033B2 (en) * 2012-09-13 2014-11-18 Conductix, Inc. Spring-driven reel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2652939A1 (en) * 1976-11-22 1978-05-24 Spahr Paul Gmbh Co DEVICE FOR SWITCHING OFF AN ELECTRIC MOTOR DRIVE FOR ROLLER SHUTTERS, AWNINGS OR DGL.
FR2459776A2 (en) * 1979-06-27 1981-01-16 Simu Soc Ind Metal Usine Roller blind winding gear - has declutching gear for drive rods operated by cam to push rods into engagement
FR2514066A1 (en) * 1981-10-05 1983-04-08 Farnier & Penin Roller blind with position stop - has actuator counter spring force reduced by blind cord operation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2652939A1 (en) * 1976-11-22 1978-05-24 Spahr Paul Gmbh Co DEVICE FOR SWITCHING OFF AN ELECTRIC MOTOR DRIVE FOR ROLLER SHUTTERS, AWNINGS OR DGL.
FR2459776A2 (en) * 1979-06-27 1981-01-16 Simu Soc Ind Metal Usine Roller blind winding gear - has declutching gear for drive rods operated by cam to push rods into engagement
FR2514066A1 (en) * 1981-10-05 1983-04-08 Farnier & Penin Roller blind with position stop - has actuator counter spring force reduced by blind cord operation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371170A1 (en) * 1988-11-30 1990-06-06 A.S.A. Motoriduttori S.N.C. Rolling device for rolling elements such as blinds, curtains, awnings or the like
CN108798099A (en) * 2018-07-10 2018-11-13 合肥市神雕起重机械有限公司 A kind of flexible sun-shading mechanism for intelligent outdoor parking space

Also Published As

Publication number Publication date
FR2588308B1 (en) 1987-12-24
EP0221826B1 (en) 1989-03-08
JPS62284880A (en) 1987-12-10
ES2007307B3 (en) 1990-06-01
FR2588308A1 (en) 1987-04-10
DE3662289D1 (en) 1989-04-13

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