EP0751278B1 - Motorized roller shutter - Google Patents

Motorized roller shutter Download PDF

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Publication number
EP0751278B1
EP0751278B1 EP96440048A EP96440048A EP0751278B1 EP 0751278 B1 EP0751278 B1 EP 0751278B1 EP 96440048 A EP96440048 A EP 96440048A EP 96440048 A EP96440048 A EP 96440048A EP 0751278 B1 EP0751278 B1 EP 0751278B1
Authority
EP
European Patent Office
Prior art keywords
tube
winding
rotation
roller blind
uncoupling
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.)
Expired - Lifetime
Application number
EP96440048A
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German (de)
French (fr)
Other versions
EP0751278A1 (en
Inventor
Robert Bubendorf
Christophe Blary
Gérard Evreux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bubendorff Volet Roulant SA
Original Assignee
Bubendorff SA
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Filing date
Publication date
Priority claimed from FR9507967A external-priority patent/FR2736086A1/en
Application filed by Bubendorff SA filed Critical Bubendorff SA
Publication of EP0751278A1 publication Critical patent/EP0751278A1/en
Application granted granted Critical
Publication of EP0751278B1 publication Critical patent/EP0751278B1/en
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Classifications

    • 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
    • E06B9/62—Counterweighting arrangements
    • 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
    • E06B9/72—Operating devices or mechanisms, e.g. with electric drive comprising an electric motor positioned inside the roller
    • 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
    • E06B9/74—Operating devices or mechanisms, e.g. with electric drive adapted for selective electrical or manual operation

Definitions

  • the invention relates to a motorized roller shutter comprising a winding tube of an apron held at its ends by supporting cheeks, in this winding tube taking position, to its rotational drive, a brake type gearmotor tubular, this rolling shutter further comprising means for manual emergency control.
  • the present invention relates to the field of shutters rollers for doors, windows or the like, comprising a brake gearmotor for winding and unfolding of the deck.
  • roller shutters responding to the description above. These include, in a way general, a winding tube around which is intended to roll up and from which takes place an apron composed of a juxtaposition of blades at least articulated in relation to one another to others. In fact, the winding tube is held in rotation, at its ends, by means of supporting cheeks arranged above the opening constituting the door, or similar, intended to be fitted with a roller shutter.
  • this is usually of the tubular type. So everything by being fixed on one of the supporting cheeks, this geared motor tubular brake is introduced into one end of the tube winding and is therefore housed inside the latter.
  • said winding tube is mounted in rotation, via an appropriate bearing, on said tubular gearmotor. At its opposite end, this tube of winding is pivotally mounted on a section of through axis the supporting cheek to which it is attached.
  • the geared motor drives, at across the differential, the roller shutter winding tube, knowing that the output shaft of this differential is blocked in rotation through the winch which is either irreversible, or slowed down. Otherwise, i.e. in the event of a malfunction of this engine, the winch control using appropriate control means, such as a crank, leads to the rotation of the drive shaft, this movement being retransmitted to the winding tube via the differential.
  • said blind In the event of an emergency, necessity or breakdown current, said blind must be able to be rolled up quickly around the winding shaft which, in this case, is possible by intervening directly on said means disengageable. In fact, this intervention allows disconnect the motor from the winding shaft which can rotate freely and, because it is subjected to the force of recall of said helical spring under tension, ensures the automatic raising of the blind.
  • the present invention aims to meet this need by allowing a user to manually control the opening or rapid closing of a motorized roller shutter.
  • the invention as characterized in the independent claim solves the problem and concerns a motorized roller shutter comprising an apron winding tube held at its ends by supporting cheeks, in this winding tube taking position, for its rotational drive, a brake gear motor, tubular type, this rolling shutter further comprising manual emergency control means, these being constituted by disengageable connecting means interposed between the output shaft of the gearmotor and the tube winding allowing, in the disengaged position, the free rotation of the latter relative to said gearmotor under the influence of an action exerted directly on said deck.
  • this roller shutter comprises, in combination, elastic return means put under stress during unfolding of the deck, capable of exerting a torque on the winding tube to cause the latter to rotate in the direction of winding of the apron during an exerted thrust on the latter to obtain the opening of said roller shutter.
  • the means disengageable linkage interposed between the output shaft of the gear motor and the winding tube are associated, in addition, damping means allowing progressive disengagement when the roller shutter is in a position such that the said elastic return means are under stress not offset by the weight of the deck.
  • the advantages of the present invention are that it suffices to disengage the connecting means connecting the shaft of the gearmotor to the winding tube to allow the user to control the raising or lowering of the apron in acting directly on the latter and therefore avoiding any reduction ratio.
  • the present invention by providing the user with a quick and easy rescue maneuver, responds in a advantageous to the problem posed, besides that, from a point of view mechanical, this emergency maneuver proves to be of great simplicity, a guarantee of its reliability.
  • the present invention relates to a motorized roller shutter 1 shown schematically and partially in Figure 1 of the attached drawings.
  • This rolling shutter 1 comprises a tube winding 2 on which is wound and which takes place, normally, an apron (not shown) consisting of a juxtaposition of blades at least articulated with respect to each other to others.
  • This winding tube 2 extends between two cheeks supports 3, 4, coming to be placed in the upper part of the opening constituted by the door, window or the like, intended to accommodate said rolling shutter 1.
  • This being motorized it includes a gear motor with brake 5 tubular type. More precisely, this brake gear motor 5 is introduced into one of the ends 6 of the winding tube 2 while being fixed on the support cheek 3. In fact, up to this end 6 of the winding tube 2, it is mounted in rotation, via appropriate means 7, on said brake gearmotor 5. At its opposite end 8 this tube winding 2 is pivotally engaged on an axis 9 fixed mounted on the support cheek 4.
  • connection between the output shaft 10 of the gearmotor 5 and the winding tube 2 is effected by means link 11 which are of disengageable type.
  • the elastic return means 12 are in the form of a coil spring 13 housed inside the winding tube 2 and one end of which 14 is made integral with the axis 9 on which this winding tube 2 is rotatably mounted. While the opposite end 15 of this spring 13 is made integral in rotation with said winding tube 2. In this regard and preferably, this end 15 of the spring 13 is fixed climb on a slider 16 which, while immobilized, in rotation, relative to said winding tube 2, is able to move axially inside the latter.
  • these means detachable link 11 are constituted by a differential 17 comprising an input shaft 18 coupled to the output shaft 10 of the brake gear motor 5, a shell 19 made integral, in rotation of the winding tube 2 and an output shaft 20.
  • disengageable 11 are associated with disengaging control means and clutch 21 in the form of unlocking or blocking means in rotation of the output shaft 20 of the differential 17.
  • these clutch and clutch control means 21 are constituted by a locking pin 22 coupled to said shaft output 20 of differential 17 and extending, coaxially, to across the tubular axis 9 on which is rotatably mounted the winding tube 2 at its end 8.
  • This locking pin 22 also crosses the cheek support 4 so as to cooperate, at the latter, with locking means 23 to even to immobilize or on the contrary to release in rotation said locking pin 22.
  • the locking means 23 are in the form of a U-shaped part 24 which, when engaged on the end flattened 25 of the locking pin 22 immobilizes the latter in rotation.
  • the locking means 23 can, of course, imagine any type of organ of traction to allow an operator to act easily on the locking means 23 and release, in rotation, the axis of blocking 22 when it is necessary to order, manually, opening or closing the roller shutter curtain 1.
  • the disengageable connecting means 11 are formed, in this case in point, by two gears, notably frustoconical, 26, 27, one of which 26 is made integral in rotation with the tube winding 2, while the other 27 is mounted fixed in rotation on the output shaft 10 of the brake gear motor 5.
  • clutch and clutch control means 21 they are constituted, on the one hand, by a sliding assembly of one 27 of these gears relative to the output axis 10 and means for elastic return 28 capable of repelling said gears 26, 27 in a engaged position.
  • these means of clutch and clutch control 21 include means for traction 29 extending inside the winding tube 2 in view of cooperating with the sliding gear 27.
  • FIGS. 4 to 7 represents disengageable connection means 11 in the form of two parts 30, 31 plug-ins which, in the plugged-in position, allow the drive of the winding tube 2 via the geared motor 5 and, on the contrary, in the disconnected position, allow the free rotation of said winding tube 2.
  • FIGS. 8 to 14 illustrating exemplary embodiments of these damping means 33.
  • the disengageable connection means 11 arise, just like the solution illustrated in figures 2 and 3, under form of two gears 26A, 27A of which one 26A is rendered integral in rotation with the winding tube 2, while the other 27A is mounted fixed in rotation on the output shaft 10 of the brake gear motor 5.
  • the gear 27A is mounted sliding on this output shaft 10 and return means elastic 28A push said gears 26A, 27A into a engaged position.
  • FIGS. 8 to 10 illustrate, in addition, the clutch and clutch control means in the form of traction means 29 extending inside the tube winding 2 in order to cooperate with the sliding gear 27A.
  • the damping means 33 are constituted, in this case, by a braking ring 34 of an expandable nature, for example of rubber, interposed between the gears 26A and 27A and which is able to ensure the contact between them, both in a engaged position, such as illustrated in figure 8, that in a disengaged position corresponding to Figure 9.
  • a braking ring 34 of an expandable nature, for example of rubber, interposed between the gears 26A and 27A and which is able to ensure the contact between them, both in a engaged position, such as illustrated in figure 8, that in a disengaged position corresponding to Figure 9.
  • the teeth thereof comes, initially, to emerge from the corresponding toothing of the gear 26A integral in rotation with the winding tube 2.
  • the braking ring 34 moves into a position expanded and maintains contact between the gears 26A and 27A.
  • shock absorber means 33 may be limited in the situation particular where, in the final stage of deployment of the deck, the torque provided by the latter on the winding tube 2 decreases gradually until reaching zero, whereas, from their side, the elastic return means 12 are under stress maximum.
  • said disengageable connecting means 11 consist, on the one hand, by a connecting tube 42 mounted fixed in rotation on the output shaft 10 of the brake gearmotor 5.
  • they include a drive wheel 43 fitted on the connecting tube 42 and made integral in rotation with the tube winding 2.
  • said disengageable connecting means 11 comprise a dog clutch 44 which, in the engaged position, aims to ensure the connection between the connecting tube 42 and the drive wheel 43 and, of course, in the disengaged position to allow free rotation of the latter relative to the brake gear motor 5.
  • this dog 44 has at least one drive finger 45 passing through an axial lumen 46 formed in the connection tube 42 and coming to be housed in a groove 47 machined in the wall 48 of the drive wheel 43.
  • this dog clutch 44 By exerting traction on this dog clutch 44 which, moreover, is slidably mounted inside the connecting tube 42, this by via traction means 29 as they have already been described above, his or her drive fingers 45 slide inside the axial slots 46 of the connecting tube 42 and, simultaneously, in the corresponding groove 47 at the level of the drive wheel 43.
  • this groove 47 comprises at minus an axially oriented portion 47A and as long as the one or more drive fingers 45 of the dog 44 remain engaged in this axial portion 47A of the groove 47, there is direct drive of the drive tube 2 by the brake gear motor 5.
  • said groove 47 is necessarily open out at its end 49 located in the direction of which the dog 44 is pulled to get the clutch. So when under the order movement of the dog 44 his or her training fingers 45 come out of their corresponding groove 47 at the height of this through end 49, there is a declutching, that is to say that the winding tube 2 can pivot freely relative to the brake gearmotor 5.
  • this portion of groove 47B is delimited by at least one side of helical shape 50 against which takes support the drive finger 45 when the drive wheel 43 tends to be rotated under the impulse of elastic return means 12.
  • the drive wheel 43 acts on the drive finger (s) 45 of this dog 44 via the helical side 50 of the portion 47B of this groove 47.
  • the constraints applied to this or these drive fingers 45 decompose in a couple and in an axial force directed towards the clutch dog 44.
  • this has the consequence to gradually push said dog 44 back into its position declutching against the action of spring 28B and authorizing a equally progressive rotation of the drive wheel 43 under the action of the elastic return means 12 coming, thus, slowly relax.
  • the restoring force of the spring 28B and the pitch of the propeller corresponding to the part helical 47B of groove 47 allow to intervene on the characteristics of the depreciation thus obtained.
  • these means of traction 29 must be designed to maintain the dog clutch 44 in its disengaged position against the action of the spring 28A tending to push it back into the engaged position. So, these traction means 29 can be equipped with a lever command 51 having the possibility of occupying at least two stable equilibrium positions corresponding to the position clutch dog 44 and in the disengaged position of the latter.
  • this through end 49 of a groove 47 is wide open and facilitates the return to the engaged position of the dog clutch 44.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Vehicle Body Suspensions (AREA)
  • Radiation-Therapy Devices (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Undergarments, Swaddling Clothes, Handkerchiefs Or Underwear Materials (AREA)

Abstract

The motorised roller shutter comprises a braked motor reducer (5) rotating a shutter winding tube (2) held at its ends (6,8) by support webs (3,4). A declutching coupling (11) is interposed between the motor reducer output shaft (10) and the winding tube. This enables, in the de-clutched position, the free rotation of the tube relative to the reducer under the influence of a force exerted directly on the shutter. A return spring (12), constrained during unwinding of the shutter, exerts a return couple on the winding tube. This causes tube rotation in the direction of shutter winding when a push is exerted on the shutter to open it. The winding tube is rotated by the reducer.

Description

L'invention a trait à un volet roulant motorisé comprenant un tube d'enroulement d'un tablier maintenu à ses extrémités par des joues supports, dans ce tube d'enroulement prenant position, pour son entraínement en rotation, un motoréducteur à frein de type tubulaire, ce volet roulant comportant, encore, des moyens de commande manuelle de secours.The invention relates to a motorized roller shutter comprising a winding tube of an apron held at its ends by supporting cheeks, in this winding tube taking position, to its rotational drive, a brake type gearmotor tubular, this rolling shutter further comprising means for manual emergency control.

Comme cela apparaít, très clairement, au regard de la description qui précède, la présente invention concerne le domaine des volets roulants pour portes, fenêtres ou analogues, comportant un motoréducteur à frein pour la commande d'enroulement et de déroulement du tablier.As it appears, very clearly, from the description which precedes, the present invention relates to the field of shutters rollers for doors, windows or the like, comprising a brake gearmotor for winding and unfolding of the deck.

Bien entendu, l'on connaít déjà des volets roulants répondant à la description ci-dessus. Ceux-ci comportent, d'une manière générale, un tube d'enroulement autour duquel est destiné à s'enrouler et duquel se déroule un tablier composé d'une juxtaposition de lames au moins articulées les unes par rapports aux autres. En fait, le tube d'enroulement est maintenu en rotation, à ses extrémités, par l'intermédiaire de joues supports disposées au-dessus de l'ouverture constituant la porte, ou analogue, destinée à être équipée d'un volet roulant.Of course, we already know roller shutters responding to the description above. These include, in a way general, a winding tube around which is intended to roll up and from which takes place an apron composed of a juxtaposition of blades at least articulated in relation to one another to others. In fact, the winding tube is held in rotation, at its ends, by means of supporting cheeks arranged above the opening constituting the door, or similar, intended to be fitted with a roller shutter.

En ce qui concerne, plus particulièrement, le motoréducteur à frein, celui-ci est, usuellement, du type tubulaire. Ainsi, tout en étant fixé sur l'une des joues supports, ce motoréducteur à frein tubulaire est introduit dans l'une des extrémités du tube d'enroulement et vient donc se loger à l'intérieur de ce dernier. A noter, à ce propos, que ledit tube d'enroulement est monté en rotation, par l'intermédiaire d'un palier approprié, sur ledit motoréducteur tubulaire. A son extrémité opposée, ce tube d'enroulement est monté pivotant sur un tronçon d'axe traversant la joue support à laquelle il est fixé.With regard, more particularly, to the geared motor brake, this is usually of the tubular type. So everything by being fixed on one of the supporting cheeks, this geared motor tubular brake is introduced into one end of the tube winding and is therefore housed inside the latter. Note, in this regard, that said winding tube is mounted in rotation, via an appropriate bearing, on said tubular gearmotor. At its opposite end, this tube of winding is pivotally mounted on a section of through axis the supporting cheek to which it is attached.

Le problème que pose, bien entendu, ce type de volet roulant motorisé consiste en ce que la présence du frein équipant le motoréducteur, empêche l'entraínement manuel du tube d'enroulement en cas de panne électrique par exemple. Pour remédier à cela et, plus particulièrement pour permettre le déploiement ou le repliement du tablier du volet roulant en cas de dysfonctionnement du motoréducteur ou, tout simplement, en cas de coupure de l'alimentation secteur, il est usuel d'équiper ce type de volet roulant motorisé d'une commande de secours manuelle. Celle-ci se présente sous forme d'un treuil se situant au côté de la joue support maintenant le tronçon d'axe sur lequel est montée en rotation l'une des extrémités du tube d'enroulement. Ce treuil agit, en réalité, sur un arbre d'entraínement traversant ladite joue support ainsi que ledit tronçon d'axe qui est prévu tubulaire, à cet effet. Il autorise, ainsi, le montage coaxial de l'arbre d'entraínement relié au treuil. Finalement, cet arbre d'entraínement est couplé à l'arbre de sortie d'un différentiel dont l'arbre d'entré est couplé à l'arbre de sortie du motoréducteur à frein et dont la coquille est rendue solidaire du tube d'enroulement.The problem of course with this type of roller shutter motorized consists in that the presence of the brake equipping the geared motor, prevents manual drive of the tube winding in the event of a power failure, for example. For remedy this and, more particularly to allow the deployment or folding of the roller shutter curtain in case malfunction of the gearmotor or, quite simply, in the event cut off the mains supply, it is usual to equip this type of motorized roller shutter with an emergency control manual. This is in the form of a winch located at the side of the support cheek now the axis section on which is rotatably mounted at one end of the tube winding. This winch acts, in reality, on a tree drive through said support cheek as well as said section of axis which is provided tubular for this purpose. He authorizes, thus, the coaxial mounting of the drive shaft connected to the winch. Finally, this drive shaft is coupled to the tree output of a differential whose input shaft is coupled to the output shaft of the brake gearmotor and whose shell is secured to the winding tube.

Ainsi, en fonctionnement normal le motoréducteur entraíne, au travers du différentiel, le tube d'enroulement du volet roulant, sachant que l'arbre de sortie de ce différentiel est bloqué en rotation par l'intermédiaire du treuil qui est, soit irréversible, soit freiné. Dans le cas contraire, c'est-à-dire en cas de dysfonctionnement de ce moteur, la commande du treuil à l'aide de moyens de commande appropriés, tels qu'une manivelle, conduit à la rotation de l'arbre d'entraínement, ce mouvement étant retransmis au tube d'enroulement par l'intermédiaire du différentiel.Thus, in normal operation the geared motor drives, at across the differential, the roller shutter winding tube, knowing that the output shaft of this differential is blocked in rotation through the winch which is either irreversible, or slowed down. Otherwise, i.e. in the event of a malfunction of this engine, the winch control using appropriate control means, such as a crank, leads to the rotation of the drive shaft, this movement being retransmitted to the winding tube via the differential.

De la même manière, il est connu par le document FR-A-2.631.076 un mécanisme de manoeuvre de secours lequel assure, lors de la commande manuelle le desserrage du frein électromagnétique du moteur.Likewise, it is known from document FR-A-2.631.076 an emergency operating mechanism which ensures, during the manual control the release of the electromagnetic brake of the engine.

L'inconvénient majeur résultant de telles conceptions consiste en ce que la manoeuvre par l'intermédiaire de la manivelle agissant sur le treuil s'avère fastidieuse. Tout particulièrement, le mécanisme est à l'origine d'un rapport de réduction important de sorte qu'il faut effectuer une multitude de tours de manivelle pour obtenir l'enroulement ou le déploiement du tablier. L'on peut imaginer que cette lenteur du mécanisme peut entraíner des conséquences graves, tout particulièrement lorsqu'il s'agit d'évacuer, rapidement, des locaux, par exemple en cas d'incendie et que les moyens moteurs sont hors d'usage, notamment en raison d'une coupure de l'alimentation en énergie électrique.The major drawback resulting from such designs is what the maneuver through the crank acting on the winch is tedious. In particular, the mechanism is responsible for a significant reduction ratio of so you have to do a multitude of crank turns to obtain the winding or the deployment of the deck. One can imagine that this slowness of the mechanism can lead to serious consequences, especially when it comes to evacuate premises quickly, for example in the event of a fire and that the motor means are out of use, in particular because a cut in the electrical energy supply.

Il est encore connu au travers du document DE-U-94 16 617 un mécanisme d'ouverture de secours pour store à commande électrique, comprenant un ressort du type hélicoïdal disposé à l'intérieur du tube d'enroulement, lequel ressort hélicoïdal est mis sous tension lors du déploiement du store assuré, tout comme le repliement de ce dernier, par un moteur alimenté en courant électrique. Ainsi, au fur et à mesure du déploiement dudit store, ledit ressort hélicoïdal est progressivement mis sous tension pour atteindre une tension maximale lorsque ce store est totalement déployé. Entre l'arbre d'enroulement dudit store et le moteur électrique, s'étendant parallèlement à cet arbre, sont interposés des moyens débrayables qui, lorsqu'ils sont embrayés, permettent d'amener et de maintenir ledit store dans la position souhaitée. En cas d'urgence, de nécessité ou de panne de courant, ledit store doit pouvoir être enroulé rapidement autour de l'arbre d'enroulement ce qui, dans ce cas d'espèce, est possible en intervenant directement sur lesdits moyens débrayables. En fait, cette intervention permet de désolidariser le moteur de l'arbre d'enroulement lequel peut tourner librement et, parce qu'il est soumis à la force de rappel dudit ressort hélicoïdal sous tension, vient assurer la remontée automatique du store.It is also known through document DE-U-94 16 617 a emergency opening mechanism for control blinds electric, comprising a helical type spring arranged at the inside of the winding tube, which coil spring is energized during the deployment of the insured awning, just like folding of the latter, by a motor supplied with current electric. Thus, as and when the said store is deployed, said coil spring is gradually energized to reach a maximum tension when this blind is fully deployed. Between the winding shaft of said awning and the electric motor, extending parallel to this shaft, are interposable disengageable means which, when engaged, allow to bring and maintain said blind in the position desired. In the event of an emergency, necessity or breakdown current, said blind must be able to be rolled up quickly around the winding shaft which, in this case, is possible by intervening directly on said means disengageable. In fact, this intervention allows disconnect the motor from the winding shaft which can rotate freely and, because it is subjected to the force of recall of said helical spring under tension, ensures the automatic raising of the blind.

L'on connaít également au travers du document DE-A-35 04 489 un mécanisme de secours pour la commande manuelle d'un volet roulant normalement entraíné par un moteur électrique à frein électromagnétique fonctionnant par manque de courant. En fait, on dispose d'un mécanisme de manoeuvre manuel qui, en cas de nécessité, peut être activé. Cela permet, en embrayant la mâchoire fixe du frein électromagnétique, de mettre en mouvement l'ensemble du mécanisme dudit frein électromagnétique et donc d'entraíner le tablier. En fin de compte, dans le cadre de ce document, les moyens de débrayage ne permettent pas de désolidariser le moteur du tube d'enroulement du tablier. Aussi, il n'est pas possible d'agir, directement, sur ce tube d'enroulement du tablier lors de la manoeuvre de secours.We also know through document DE-A-35 04 489 a emergency mechanism for manual control of a shutter traveling normally driven by an electric motor with brake electromagnetic operating by lack of current. In fact, there is a manual operating mechanism which, in the event of need, can be activated. This allows, by engaging the fixed jaw of the electromagnetic brake, to set movement the entire mechanism of said electromagnetic brake and therefore to train the apron. Ultimately, under of this document, the declutching means do not allow disconnect the motor from the curtain winding tube. Also, it is not possible to act directly on this tube of winding the apron during the emergency maneuver.

L'on connaít encore au travers du document DE-A-31 32 073 un dispositif de secours pour store à lamelles actionné par un moteur électrique. L'ensemble du dispositif d'entraínement du store, excepté la manivelle du système de sécurité, est disposé à l'intérieur d'un caisson situé dans la partie supérieure dudit store. Celui-ci est entraíné par un système de chaínes ou analogue relié à un arbre de transmission entraíné par un moteur disposé à l'intérieur de ce caisson. Le dispositif d'entraínement comporte un certain nombre d'organes de sécurité ainsi qu'un mécanisme de secours. Parmi les organes de sécurité on notera la présence d'un frein qui, en tenant compte du poids du store, empêche ce dernier de retomber lors de l'interruption d'une manoeuvre. En outre, il y est décrit un mécanisme de secours qui, en cas de rupture de courant annule la force de répulsion électromagnétique entre les deux éléments du système d'embrayage. Celui-ci permet alors de relier l'arbre d'entraínement à un mécanisme de manoeuvre manuel actionné à l'aide d'une manivelle. Finalement, en cas de coupure de courant il est possible d'intervenir sur le déploiement ou le repliement du store que par l'intermédiaire du mécanisme de secours donc de la manivelle. Ledit mécanisme de secours exclut donc toute intervention directe sur le store et ne permet, ni de repousser celui-ci à l'intérieur du caisson, ni un enroulement automatique.We still know through document DE-A-31 32 073 a emergency device for blinds actuated by a electric motor. The entire drive system of the awning, except the crank of the security system, is arranged inside a box located at the top said store. This is driven by a chain system or analog connected to a drive shaft driven by a motor arranged inside this box. The device has a number of security organs as well as an emergency mechanism. Among the security organs note the presence of a brake which, taking into account the weight of the blind, prevents the latter from falling during the interruption of a maneuver. In addition, there is described a mechanism for emergency which, in the event of a power failure, cancels the force of electromagnetic repulsion between the two elements of the system clutch. This then connects the tree driving a manual operating mechanism operated at using a crank. Finally, in the event of a power outage current it is possible to intervene on the deployment or the folding the blind only through the help therefore of the crank. Said backup mechanism excludes therefore any direct intervention on the blind and does not allow to push it inside the box, nor a automatic winding.

La présente invention se veut à même de répondre à ce besoin en permettant à un usager de commander manuellement l'ouverture ou la fermeture rapide d'un volet roulant motorisé.The present invention aims to meet this need by allowing a user to manually control the opening or rapid closing of a motorized roller shutter.

L'invention telle que caractérisée dans la revendication indépendante résout le problème et concerne un volet roulant motorisé comprenant un tube d'enroulement d'un tablier maintenu à ses extrémités par des joues supports, dans ce tube d'enroulement prenant position, pour son entraínement en rotation, un motoréducteur à frein, de type tubulaire, ce volet roulant comportant, encore, des moyens de commande manuelle de secours, ceux-ci étant constitués par des moyens de liaison débrayables interposés entre l'arbre de sortie du motoréducteur et le tube d'enroulement autorisant, en position de débrayage, la libre rotation de ce dernier par rapport audit motoréducteur sous l'influence d'une action exercée directement sur ledit tablier.The invention as characterized in the independent claim solves the problem and concerns a motorized roller shutter comprising an apron winding tube held at its ends by supporting cheeks, in this winding tube taking position, for its rotational drive, a brake gear motor, tubular type, this rolling shutter further comprising manual emergency control means, these being constituted by disengageable connecting means interposed between the output shaft of the gearmotor and the tube winding allowing, in the disengaged position, the free rotation of the latter relative to said gearmotor under the influence of an action exerted directly on said deck.

Avantageusement, ce volet roulant comporte, en combinaison, des moyens de rappel élastiques mis sous contrainte lors du déroulement du tablier, à même d'exercer un couple de rappel sur le tube d'enroulement pour entraíner ce dernier en rotation dans le sens de l'enroulement du tablier lors d'une poussée exercée sur ce dernier pour obtenir l'ouverture dudit volet roulant.Advantageously, this roller shutter comprises, in combination, elastic return means put under stress during unfolding of the deck, capable of exerting a torque on the winding tube to cause the latter to rotate in the direction of winding of the apron during an exerted thrust on the latter to obtain the opening of said roller shutter.

En outre, selon un mode de réalisation préférentiel, aux moyens de liaison débrayables interposés entre l'arbre de sortie du motoréducteur et le tube d'enroulement sont associés, en outre, des moyens amortisseurs autorisant un débrayage progressif lorsque le volet roulant est dans une position telle que les moyens de rappel élastiques précités sont sous contrainte non compensée par le poids du tablier.In addition, according to a preferred embodiment, the means disengageable linkage interposed between the output shaft of the gear motor and the winding tube are associated, in addition, damping means allowing progressive disengagement when the roller shutter is in a position such that the said elastic return means are under stress not offset by the weight of the deck.

Les avantages découlant de la présente invention consistent en ce qu'il suffit de débrayer les moyens de liaison raccordant l'arbre de sortie du motoréducteur au tube d'enroulement pour permettre à l'usager de commander la remontée ou la descente du tablier en agissant directement sur ce dernier et, par conséquent, en évitant tout rapport de réduction.The advantages of the present invention are that it suffices to disengage the connecting means connecting the shaft of the gearmotor to the winding tube to allow the user to control the raising or lowering of the apron in acting directly on the latter and therefore avoiding any reduction ratio.

La présente invention, en mettant à disposition de l'usager une manoeuvre de secours aisée et rapide, répond d'une manière avantageuse au problème posé, sans compter que, d'un point de vue mécanique, cette manoeuvre de secours s'avère d'une grande simplicité, gage de sa fiabilité.The present invention, by providing the user with a quick and easy rescue maneuver, responds in a advantageous to the problem posed, besides that, from a point of view mechanical, this emergency maneuver proves to be of great simplicity, a guarantee of its reliability.

L'invention est exposée plus en détail dans la description qui va suivre accompagnée des dessins illustrant des exemples de réalisation.

  • la figure 1 est une vue schématisée partielle et en coupe d'un tube d'enroulement d'un volet roulant maintenu en rotation par des joues supports disposées à ses extrémités, cette figure 1 illustrant, par ailleurs, un premier mode de réalisation des moyens de liaison débrayables reliant l'arbre de sortie du motoréducteur au tube d'enroulement ;
  • les figures 2 et 3 illustrent de manière schématisée, partielle et en coupe, un second mode de réalisation de ces moyens de liaison débrayables venant relier, mécaniquement, l'arbre de sortie du motoréducteur au tube d'enroulement, la figure 2 correspondant à la position embrayée, tandis que la figure 3 représente les éléments en position débrayée ;
  • les figures 4 et 5 correspondent à des vues schématisées et en coupe illustrant un troisième mode de réalisation de ces moyens de liaison débrayables selon le même principe que les figures 2 et 3 ;
  • la figure 6 représente, de manière schématisée et en perspective, la partie mâle correspondant aux moyens de liaison débrayables tels qu'illustrés dans les figures 4 et 5 ;
  • la figure 7 est une représentation similaire à la figure 6 illustrant la partie femelle de ces moyens de liaison débrayables ;
  • les figures 8, 9 et 10 correspondent à des représentations schématisées partielles et en coupe de moyens de liaison débrayables sensiblement similaires à ceux illustrés dans les figures 2 et 3 et auxquels ont été associés des moyens amortisseurs permettant d'obtenir un débrayage progressif ;
  • la figure 11 représente de manière schématisée partielle et en perspective de tels moyens amortisseurs conçus selon un second mode de réalisation ;
  • la figure 12 est une représentation similaire à la figure 11 et illustrant un troisième mode de réalisation de ces moyens amortisseurs ;
  • les figures 13 et 14 représentent, respectivement, une vue schématisée en perspective ainsi qu'une vue partielle et en coupe de ces moyens amortisseurs conçus selon un mode de réalisation préférentiel.
The invention is explained in more detail in the description which follows, accompanied by the drawings illustrating exemplary embodiments.
  • Figure 1 is a partial schematic sectional view of a winding tube of a rolling shutter kept in rotation by support cheeks disposed at its ends, this Figure 1 illustrating, moreover, a first embodiment of the means disengageable link connecting the output shaft of the gearmotor to the winding tube;
  • Figures 2 and 3 illustrate schematically, partially and in section, a second embodiment of these disengageable connecting means coming to mechanically connect the output shaft of the gearmotor to the winding tube, Figure 2 corresponding to the engaged position, while Figure 3 shows the elements in the disengaged position;
  • Figures 4 and 5 correspond to schematic views in section illustrating a third embodiment of these disengageable connecting means according to the same principle as Figures 2 and 3;
  • 6 shows, schematically and in perspective, the male part corresponding to the disengageable connection means as illustrated in Figures 4 and 5;
  • Figure 7 is a representation similar to Figure 6 illustrating the female part of these disengageable connecting means;
  • Figures 8, 9 and 10 correspond to partial schematic representations in section of disengageable connecting means substantially similar to those illustrated in Figures 2 and 3 and which have been associated with damping means for obtaining a progressive disengagement;
  • Figure 11 shows schematically partially and in perspective of such damping means designed according to a second embodiment;
  • Figure 12 is a representation similar to Figure 11 and illustrating a third embodiment of these damping means;
  • Figures 13 and 14 show, respectively, a schematic perspective view and a partial view in section of these damping means designed according to a preferred embodiment.

La présente invention concerne un volet roulant motorisé 1 représenté de manière schématisée et partielle dans la figure 1 des dessins ci-joints. Ce volet roulant 1 comporte un tube d'enroulement 2 sur lequel s'enroule et duquel se déroule, normalement, un tablier (non représenté) constitué par une juxtaposition de lames au moins articulées les unes par rapport aux autres. Ce tube d'enroulement 2 s'étend entre deux joues supports 3, 4, venant se placer en partie supérieure de l'ouverture que constitue, la porte, fenêtre ou analogue, destinée à accueillir ledit volet roulant 1.The present invention relates to a motorized roller shutter 1 shown schematically and partially in Figure 1 of the attached drawings. This rolling shutter 1 comprises a tube winding 2 on which is wound and which takes place, normally, an apron (not shown) consisting of a juxtaposition of blades at least articulated with respect to each other to others. This winding tube 2 extends between two cheeks supports 3, 4, coming to be placed in the upper part of the opening constituted by the door, window or the like, intended to accommodate said rolling shutter 1.

Celui-ci étant motorisé, il comporte un motoréducteur à frein 5 de type tubulaire. Plus précisément, ce motoréducteur à frein 5 est introduit dans l'une des extrémités 6 du tube d'enroulement 2 tout en étant fixé sur la joue support 3. En fait, à hauteur de cette extrémité 6 du tube d'enroulement 2, celui-ci est monté en rotation, par l'intermédiaire de moyens 7 appropriés, sur ledit motoréducteur à frein 5. A son extrémité 8 opposée ce tube d'enroulement 2 est engagé de manière pivotante sur un axe 9 monté fixe sur la joue support 4.This being motorized, it includes a gear motor with brake 5 tubular type. More precisely, this brake gear motor 5 is introduced into one of the ends 6 of the winding tube 2 while being fixed on the support cheek 3. In fact, up to this end 6 of the winding tube 2, it is mounted in rotation, via appropriate means 7, on said brake gearmotor 5. At its opposite end 8 this tube winding 2 is pivotally engaged on an axis 9 fixed mounted on the support cheek 4.

Le raccordement entre l'arbre de sortie 10 du motoréducteur 5 et le tube d'enroulement 2 s'effectue par l'intermédiaire de moyens de liaison 11 qui sont de type débrayable. Au travers de cette caractéristique il est possible, une fois les moyens de liaison débrayés, de commander la libre rotation du tube d'enroulement 2 par rapport au motoréducteur à frein 5. Plus particulièrement en cas de dysfonctionnement de ce dernier, et une fois lesdits moyens de liaison 11 débrayés, l'on peut agir, directement, sur le tablier du volet roulant pour le repousser vers le haut ou, au contraire, pour le refermer.The connection between the output shaft 10 of the gearmotor 5 and the winding tube 2 is effected by means link 11 which are of disengageable type. Through this characteristic it is possible, once the connecting means disengaged, to control the free rotation of the winding tube 2 compared to the brake gear motor 5. More particularly in case of malfunction of the latter, and once said connecting means 11 disengaged, it is possible to act directly on the roller shutter curtain to push it up or, at the otherwise, to close it.

A ce propos, tel que représenté dans la figure 1, il est avantageux d'équiper, en combinaison, le volet roulant 1, de moyens de rappel élastiques 12 mis sous contrainte lors du déroulement du tablier et à même d'exercer un couple de rappel sur le tube d'enroulement 2 pour assurer l'entraínement de celui-ci en rotation, dans le sens de l'enroulement dudit tablier, lorsque, précisément, celui-ci est repoussé vers le haut pour obtenir l'ouverture du volet roulant 1. Il est évident, en effet, qu'en l'absence de tels moyens de rappel élastiques ou encore de moyens équivalents à même de contrôler l'enroulement du tablier sur le tube d'enroulement 2, ce tablier, sous l'action d'une poussée ascendante, risque de se replier de manière incontrôlée à l'intérieur du caisson accueillant, habituellement, ledit tube d'enroulement 2.In this regard, as shown in Figure 1, it is advantageous to equip, in combination, the roller shutter 1, with elastic return means 12 under stress during the unfolding of the deck and able to exert a torque on the winding tube 2 to ensure the training thereof in rotation, in the direction of the winding of said apron, when, precisely, it is pushed upwards to obtain the opening of the roller shutter 1. It is obvious, in fact, that in the absence of such elastic return means or else of equivalent means capable of controlling the winding of the deck on the winding tube 2, this apron, under the action of a upward push, risk of withdrawing uncontrollably at the interior of the housing accommodating, usually, said tube winding 2.

L'on notera qu'en tant que moyens équivalents aux moyens de rappel élastiques 12 pour le contrôle de l'enroulement du tablier sur le tube d'enroulement 2, l'on peut imaginer l'usage de guides ou encore d'une sangle à rappel élastique pour assurer l'orientation dudit tablier autour de ce tube d'enroulement 2.It should be noted that as means equivalent to the means of elastic return 12 for controlling the winding of the bulkhead on the winding tube 2, one can imagine the use of guides or an elastic return strap to ensure the orientation of said deck around this winding tube 2.

Quoi qu'il en soit, selon l'exemple illustré dans la figure 1, les moyens de rappel élastiques 12 se présentent sous forme d'un ressort hélicoïdal 13 logé à l'intérieur du tube d'enroulement 2 et dont une extrémité 14 est rendue solidaire de l'axe 9 sur lequel ce tube d'enroulement 2 est monté en rotation. Tandis que l'extrémité opposée 15 de ce ressort 13 est, elle, rendue solidaire en rotation dudit tube d'enroulement 2. A ce propos et de manière préférentielle, cette extrémité 15 du ressort 13 est montée fixe sur un curseur 16 qui, tout en étant immobilisé, en rotation, par rapport audit tube d'enroulement 2, est à même de se déplacer axialement à l'intérieur de ce dernier.Anyway, according to the example illustrated in Figure 1, the elastic return means 12 are in the form of a coil spring 13 housed inside the winding tube 2 and one end of which 14 is made integral with the axis 9 on which this winding tube 2 is rotatably mounted. While the opposite end 15 of this spring 13 is made integral in rotation with said winding tube 2. In this regard and preferably, this end 15 of the spring 13 is fixed climb on a slider 16 which, while immobilized, in rotation, relative to said winding tube 2, is able to move axially inside the latter.

Quant aux moyens de liaison débrayables 11 proprement dits, ils sont représentés sous différents modes de réalisation dans les dessins ci-joints.As for the detachable connection means 11 proper, they are represented in different embodiments in the attached drawings.

Tout particulièrement, dans le cadre de la figure 1, ces moyens de liaison débrayables 11 sont constitués par un différentiel 17 comprenant un arbre d'entrée 18 couplé à l'arbre de sortie 10 du motoréducteur à frein 5, une coquille 19 rendue solidaire, en rotation du tube d'enroulement 2 et un arbre de sortie 20.In particular, in the context of FIG. 1, these means detachable link 11 are constituted by a differential 17 comprising an input shaft 18 coupled to the output shaft 10 of the brake gear motor 5, a shell 19 made integral, in rotation of the winding tube 2 and an output shaft 20.

A ce propos, il convient d'observer que, à ces moyens de liaison débrayables 11 sont associés des moyens de commande de débrayage et d'embrayage 21 sous forme de moyens de déblocage ou de blocage en rotation de l'arbre de sortie 20 du différentiel 17. Ainsi, selon ce mode de réalisation illustré dans la figure 1, ces moyens de commande de débrayage et d'embrayage 21, sont constitués par un axe de blocage 22 accouplé audit arbre de sortie 20 du différentiel 17 et s'étendant, coaxialement, au travers de l'axe tubulaire 9 sur lequel est monté en rotation le tube d'enroulement 2 à son extrémité 8. Cet axe de blocage 22 traverse, par ailleurs, la joue support 4 de manière à coopérer, au niveau de cette dernière, avec des moyens de verrouillage 23 à même d'immobiliser ou au contraire de libérer en rotation ledit axe de blocage 22. A titre d'exemple illustré sur cette figure 1, les moyens de verrouillage 23 se présentent sous forme d'une pièce en «U» 24 qui, lorsqu'elle est engagée sur l'extrémité aplatie 25 de l'axe de blocage 22 immobilise celui-ci en rotation. L'on peut, bien entendu, imaginer tout type d'organe de traction pour permettre à un opérateur d'agir, aisément, sur les moyens de verrouillage 23 et libérer, en rotation, l'axe de blocage 22 lorsqu'il y a lieu de commander, manuellement, l'ouverture ou la fermeture du tablier du volet roulant 1.In this regard, it should be noted that, to these means of connection disengageable 11 are associated with disengaging control means and clutch 21 in the form of unlocking or blocking means in rotation of the output shaft 20 of the differential 17. Thus, according to this embodiment illustrated in Figure 1, these clutch and clutch control means 21 are constituted by a locking pin 22 coupled to said shaft output 20 of differential 17 and extending, coaxially, to across the tubular axis 9 on which is rotatably mounted the winding tube 2 at its end 8. This locking pin 22 also crosses the cheek support 4 so as to cooperate, at the latter, with locking means 23 to even to immobilize or on the contrary to release in rotation said locking pin 22. As an example illustrated in this FIG. 1, the locking means 23 are in the form of a U-shaped part 24 which, when engaged on the end flattened 25 of the locking pin 22 immobilizes the latter in rotation. One can, of course, imagine any type of organ of traction to allow an operator to act easily on the locking means 23 and release, in rotation, the axis of blocking 22 when it is necessary to order, manually, opening or closing the roller shutter curtain 1.

Si l'on se rapporte, à présent, aux figures 2 et 3, l'on constate que les moyens de liaison débrayables 11 sont constitués, dans ce cas d'espèce, par deux engrenages, notamment tronconiques, 26, 27, dont l'un 26 est rendu solidaire en rotation du tube d'enroulement 2, tandis que l'autre 27 est monté fixe en rotation sur l'arbre de sortie 10 du motoréducteur à frein 5. Quant aux moyens de commande de débrayage et d'embrayage 21, ils sont constitués, d'une part, par un montage coulissant de l'un 27 de ces engrenages par rapport à l'axe de sortie 10 et des moyens de rappel élastiques 28 à même de repousser lesdits engrenages 26, 27 dans une position embrayée. D'autre part, ces moyens de commande de débrayage et d'embrayage 21 comportent des moyens de traction 29 s'étendant à l'intérieur du tube d'enroulement 2 en vue de coopérer avec l'engrenage 27 coulissant. Ces moyens de traction 29 traversent, par ailleurs, la joue support 4, en passant par l'axe tubulaire 9, de manière à les rendre accessibles à l'usager et pour lui permettre de commander le débrayage ou l'embrayage desdits moyens de liaison débrayables 11. Dans le cadre du montage préconisé au travers des figures 2 et 3, l'on s'aperçoit que les moyens de rappel élastiques 28, sous forme d'un ressort hélicoïdal, sont interposés entre l'engrenage 27 monté fixe en rotation sur l'arbre de sortie 10 et l'extrémité libre de ce dernier, ceci de manière à repousser cet engrenage 27 en direction de l'engrenage 26 solidaire en rotation du tube d'enroulement 2. Quant aux moyens de traction 29, ils ont pour fonction, lors d'une commande de débrayage, d'écarter cet engrenage 27 par rapport à l'engrenage 26 en le tirant, précisément, en direction de l'extrémité libre de l'arbre de sortie 10, à l'encontre desdits moyens de rappel élastiques 28.If we now refer to Figures 2 and 3, we see that the disengageable connecting means 11 are formed, in this case in point, by two gears, notably frustoconical, 26, 27, one of which 26 is made integral in rotation with the tube winding 2, while the other 27 is mounted fixed in rotation on the output shaft 10 of the brake gear motor 5. As for clutch and clutch control means 21, they are constituted, on the one hand, by a sliding assembly of one 27 of these gears relative to the output axis 10 and means for elastic return 28 capable of repelling said gears 26, 27 in a engaged position. On the other hand, these means of clutch and clutch control 21 include means for traction 29 extending inside the winding tube 2 in view of cooperating with the sliding gear 27. These means of traction 29 cross, moreover, the cheek support 4, in passing through the tubular axis 9, so as to make them accessible to the user and to allow him to order the disengagement or engagement of said disengageable connecting means 11. Within the framework of the assembly recommended through Figures 2 and 3, it can be seen that the elastic return means 28, in the form of a helical spring, are interposed between the gear 27 mounted fixed in rotation on the output shaft 10 and the free end of the latter, so as to repel this gear 27 in the direction of gear 26 integral in rotation of the winding tube 2. As for the traction means 29, they have the function, during a clutch release command, of removing this gear 27 relative to gear 26 by pulling it, precisely, towards the free end of the shaft outlet 10, against said elastic return means 28.

Le mode de réalisation correspondant aux figures 4 à 7 représente des moyens de liaison débrayables 11 sous forme de deux pièces 30, 31 enfichables qui, en position enfichée, autorisent l'entraínement du tube d'enroulement 2 par l'intermédiaire du motoréducteur 5 et, au contraire, en position déconnectée, autorisent la libre rotation dudit tube d'enroulement 2.The embodiment corresponding to FIGS. 4 to 7 represents disengageable connection means 11 in the form of two parts 30, 31 plug-ins which, in the plugged-in position, allow the drive of the winding tube 2 via the geared motor 5 and, on the contrary, in the disconnected position, allow the free rotation of said winding tube 2.

Tout comme dans le cadre du mode de réalisation précédent, on retrouve, dans ce cas de figure, des moyens de rappel élastiques 32 agissant de manière à maintenir les pièces 30, 31 en position enfichée et constituant, de ce fait, en partie, les moyens de commande de débrayage et d'embrayage 21. Là encore, ces moyens 21 sont complétés par des moyens de traction 29 sensiblement similaires à ceux décrits dans le cadre du mode de réalisation correspondant aux figures 2 et 3 et qui sont rendus accessibles à l'usager pour lui permettre, précisément, de commander le débrayage.Just as in the previous embodiment, we finds, in this case, elastic return means 32 acting so as to keep the parts 30, 31 in position inserted and thus, in part, constituting the means of clutch and clutch control 21. Again, these means 21 are supplemented by traction means 29 substantially similar to those described in the context of the embodiment corresponding to Figures 2 and 3 and which are made accessible to the user to enable him, precisely, to order the declutching.

Il y a lieu d'observer que dans une position totalement déployée du tablier du volet roulant, le poids dudit tablier repose, totalement, sur le seuil de la porte, fenêtre ou analogue, ou sur des arrêts quelconques situés à l'extrémité inférieure des rails de guidage à l'intérieur desquels se déplacent, précisément, les lames composant ce tablier. Du même coup, ce tablier n'exerce plus de couple sur le tube d'enroulement 2, tandis qu'à l'inverse les moyens de rappel élastiques 12 sont au maximum sous contrainte et exercent un couple de rappel important sur ce tube d'enroulement 2 dans le sens de l'enroulement dudit tablier.It should be noted that in a fully deployed position of the roller shutter deck, the weight of said deck rests, totally, on the threshold of the door, window or the like, or on any stops located at the lower end of the rails guide inside which move, precisely, the blades making up this deck. At the same time, this apron does not exercise more torque on the winding tube 2, while conversely the elastic return means 12 are at most under stress and exert a significant restoring torque on this tube winding 2 in the direction of winding said deck.

Si, à cet instant, l'usager actionne la commande de débrayage, le tube d'enroulement 2 est fortement sollicité en rotation sous l'impulsion de ces moyens de rappel élastiques 12, dans le sens d'enroulement du tablier et, ceci, jusqu'à ce que ce dernier compense, par son poids, cette force de rappel du ressort 13.If, at this instant, the user actuates the clutch control, the winding tube 2 is strongly rotated under the impulse of these elastic return means 12, in the direction of winding the deck and, this, until the latter compensates, by its weight, for this return force of the spring 13.

Il est évident que cette accélération brutale de la rotation du tube d'enroulement 2 a pour conséquence de solliciter fortement la mécanique. Même à supposer que celle-ci soit définie suffisamment résistante, le relâchement instantané des moyens de rappel élastiques 12 et l'entraínement brutal du tube d'enroulement 2 sont à l'origine d'un bruit de fonctionnement surprenant.It is obvious that this brutal acceleration of the rotation of the winding tube 2 results in heavy stress the mecanic. Even assuming that it is defined sufficiently resistant, the instantaneous release of the means of elastic return 12 and the brutal drive of the tube winding 2 are causing an operating noise surprising.

De manière à remédier à ce problème et permettre une compensation progressive de l'action exercée par les moyens de rappel élastiques 12 sur le tube d'enroulement 2, ceci sous l'influence du poids du tablier, l'on a imaginé d'associer aux moyens de liaisons débrayables 11 des moyens amortisseurs 33 empêchant, précisément, la détente brutale desdits moyens de rappel élastiques 12 lorsque ceux-ci exercent une contrainte non compensée sur le tube d'enroulement 2.In order to remedy this problem and allow compensation progressive action exerted by the recall means elastic 12 on the winding tube 2, this under the influence of the weight of the deck, we imagined to associate with the means of disengageable connections 11 of the damping means 33 preventing, specifically, the sudden expansion of said return means elastic 12 when these exert a stress not compensated on the winding tube 2.

Il est à présent fait référence aux figures 8 à 14 illustrant des exemples de réalisation de ces moyens amortisseurs 33.Reference is now made to FIGS. 8 to 14 illustrating exemplary embodiments of these damping means 33.

Tout particulièrement, dans le cadre des figures 8 à 10, l'on observe que les moyens de liaison débrayables 11 se présentent, tout comme la solution illustrée dans les figures 2 et 3, sous forme de deux engrenages 26A, 27A dont l'un 26A est rendu solidaire en rotation du tube d'enroulement 2, tandis que l'autre 27A est monté fixe en rotation sur l'arbre de sortie 10 du motoréducteur à frein 5. En outre, l'engrenage 27A est monté coulissant sur cet arbre de sortie 10 et des moyens de rappel élastiques 28A repoussent lesdits engrenages 26A, 27A dans une position embrayée. Ces figures 8 à 10 illustrent, en outre, les moyens de commande de débrayage et d'embrayage sous forme de moyens de traction 29 s'étendant à l'intérieur du tube d'enroulement 2 en vue de coopérer avec l'engrenage coulissant 27A.In particular, in the context of FIGS. 8 to 10, one observes that the disengageable connection means 11 arise, just like the solution illustrated in figures 2 and 3, under form of two gears 26A, 27A of which one 26A is rendered integral in rotation with the winding tube 2, while the other 27A is mounted fixed in rotation on the output shaft 10 of the brake gear motor 5. In addition, the gear 27A is mounted sliding on this output shaft 10 and return means elastic 28A push said gears 26A, 27A into a engaged position. These figures 8 to 10 illustrate, in addition, the clutch and clutch control means in the form of traction means 29 extending inside the tube winding 2 in order to cooperate with the sliding gear 27A.

Quant aux moyens amortisseurs 33 proprement dits, ils sont constitués, dans ce cas d'espèces, par une bague de freinage 34 de nature expansible, par exemple en caoutchouc, interposée entre les engrenages 26A et 27A et qui est en mesure d'assurer le contact entre ces derniers, tant dans une position embrayée, tel qu'illustré dans la figure 8, que dans une position débrayée correspondant à la figure 9. Très précisément, en exerçant une traction sur l'engrenage coulissant 27A, la denture de ce dernier vient, initialement, se dégager de la denture correspondante de l'engrenage 26A solidaire en rotation du tube d'enroulement 2. Simultanément, la bague de freinage 34 se met dans une position expansée et maintient le contact entre les engrenages 26A et 27A. Ainsi, la rotation de l'engrenage 26A, sous l'action des moyens de rappel élastiques 12 agissant sur le tube d'enroulement 2, est freinée par l'intermédiaire de ladite bague de freinage 34. Une fois l'action des moyens de rappel élastiques 12 compensée par le couple appliqué sur le tube d'enroulement 2 sous l'impulsion du poids du tablier, l'on poursuit l'action exercée sur les moyens de traction 29 jusqu'à ce qu'il n'y ait plus contact de la bague de freinage 34 simultanément avec les deux engrenages 26A, 27B. As for the damping means 33 proper, they are constituted, in this case, by a braking ring 34 of an expandable nature, for example of rubber, interposed between the gears 26A and 27A and which is able to ensure the contact between them, both in a engaged position, such as illustrated in figure 8, that in a disengaged position corresponding to Figure 9. Very precisely, by exercising a traction on the sliding gear 27A, the teeth thereof comes, initially, to emerge from the corresponding toothing of the gear 26A integral in rotation with the winding tube 2. Simultaneously, the braking ring 34 moves into a position expanded and maintains contact between the gears 26A and 27A. Thus, the rotation of the gear 26A, under the action of the means elastic return 12 acting on the winding tube 2, is braked via said brake ring 34. A times the action of the elastic return means 12 compensated by the torque applied to the winding tube 2 under the impulse of the weight of the deck, we continue the action exerted on the means tension 29 until there is no longer contact with the ring braking 34 simultaneously with the two gears 26A, 27B.

Bien entendu, l'on peut imaginer une conception similaire dans le cadre d'un mode de réalisation de moyens de liaison débrayables 11 tels qu'illustrés dans les figures 4 à 7 où les engrenages, selon le cas, 26, 27 ou 26A, 27A sont remplacés par des pièces enfichables 31, 30.Of course, one can imagine a similar design in the part of an embodiment of disengageable connecting means 11 as illustrated in FIGS. 4 to 7 where the gears, as the case may be, 26, 27 or 26A, 27A are replaced by parts pluggable 31, 30.

La solution représentée dans la figure 11 laisse apparaítre des moyens amortisseurs 33 sous forme d'un volant d'inertie 35 monté en rotation sur l'axe 9 sur lequel est monté le tube d'enroulement 2. Ce volant d'inertie 35 est relié, plus particulièrement par l'intermédiaire d'un ressort 36 à une roue de transmission 37 solidaire en rotation dudit tube d'enroulement 2. Ainsi, une fois effectuée la commande de débrayage, les moyens de rappel élastiques 12, illustrés en traits discontinus sur la figure 11, se détendent jusqu'à ce que leur action soit compensée par le couple produit par le poids du tablier. En conséquence, ils entraínent en rotation le tube d'enroulement 2 qui, par l'intermédiaire de la roue de transmission 37, doit entraíner le volant d'inertie 35. Aussi, cette détente des moyens de rappel élastiques 12 s'effectue, nécessairement, de manière progressive. L'on remarquera que ce volant d'inertie 35 ne crée aucune gêne pour déplacer, ultérieurement et en position débrayée des moyens de liaison débrayables 11, le tablier du volet roulant par action directe sur ce dernier. En effet, la vitesse communiquée au tube d'enroulement 2 dans ces conditions est, comparativement, très faible.The solution shown in Figure 11 lets appear damping means 33 in the form of a flywheel 35 mounted rotating on axis 9 on which the tube is mounted 2. This flywheel 35 is connected, plus particularly via a spring 36 to a wheel transmission 37 integral in rotation with said winding tube 2. Thus, once the clutch control has been carried out, the means elastic return 12, illustrated in broken lines on the figure 11, relax until their action is compensated by the torque produced by the weight of the deck. Consequently, they rotate the winding tube 2 which, by via the transmission wheel 37, must drive the flywheel 35. Also, this relaxation of the return means elastic 12 is necessarily carried out gradually. It will be noted that this flywheel 35 does not create any discomfort to move, subsequently and in the disengaged position means detachable link 11, the roller shutter deck by action direct on the latter. Indeed, the speed communicated to the tube winding 2 under these conditions is, comparatively, very low.

La solution présentée dans le cadre de la figure 12 est, du point de vue de son fonctionnement, sensiblement similaire à celle correspondant aux figures 8 à 10. Toutefois, au lieu d'exercer une action de freinage entre deux pièces qui, selon qu'elles sont en contact ou non, autorisent ou non l'entraínement du tube d'enroulement 2 par l'intermédiaire du motoréducteur à frein 5, lesdits moyens de freinage 38 constituant les moyens amortisseurs 33, agissent sur le curseur 16 correspondant aux moyens de rappel élastiques 12 et monté solidaire en rotation du tube d'enroulement 2. En fait, les moyens de freinage 38 se présentent sous forme d'un disque de freinage 39 monté immobile en rotation sur l'axe 9 par rapport auquel ledit tube d'enroulement 2 est pivotant. En réalité, ce disque de freinage 39 entre en contact avec la face frontale 40 du curseur 16 que dans certaines conditions, c'est-à-dire lorsque les moyens de rappel élastiques 12 sont mis sous contrainte d'où résulte un allongement du ressort 13 qui vient, alors, repousser le curseur 16 contre le disque de freinage 39.The solution presented in the framework of figure 12 is, from the point in terms of its operation, substantially similar to that corresponding to Figures 8 to 10. However, instead of exercising a braking action between two parts which, depending on whether they are in contact or not, allow or not drive the tube winding 2 via the brake gear motor 5, said braking means 38 constituting the damping means 33, act on the cursor 16 corresponding to the recall means elastic 12 and mounted integral in rotation with the tube 2. In fact, the braking means 38 present themselves in the form of a braking disc 39 mounted stationary in rotation on the axis 9 with respect to which said winding tube 2 is swivel. In reality, this brake disc 39 comes into contact with the front face 40 of the cursor 16 that in some conditions, i.e. when the elastic return means 12 are placed under stress resulting in an elongation of the spring 13 which then pushes the cursor 16 against the brake disc 39.

Celui-ci est, par ailleurs, monté coulissant sur l'axe 9 tandis qu'un ressort 41 tente de le repousser en direction du curseur 16 contre une butée de fin de course non visible sur les dessins.It is also slidably mounted on axis 9 while a spring 41 tries to push it back towards the cursor 16 against a limit stop not visible in the drawings.

Ainsi, l'on comprend qu'au moment de déployer le tablier, il en résulte la mise sous tension des moyens de rappel élastiques 12 et, donc, l'allongement progressif du ressort 13. Au-delà d'une course donnée dudit tablier et, donc, de l'allongement d'une longueur définie du ressort 13, le curseur 16 entre en contact avec le disque de freinage 39. Puis, en déployant davantage le tablier du volet roulant, le ressort 13 s'allonge encore de sorte que le curseur 16 vient repousser le disque de freinage 39 contre l'action du ressort 41. De ce fait, au moment de commander le débrayage des moyens de liaisons débrayables 11, les moyens de rappel élastiques 12 se relâchent et entraínent en rotation le tube d'enroulement 2 par l'intermédiaire du curseur 16 dont la rotation est toutefois freinée sous l'influence du disque de freinage 39. Pendant ce temps là, la longueur du ressort 13 diminue et le disque de freinage 39 vient en butée sur l'axe 9. Le curseur 16 n'étant, alors, plus en contact avec ce disque de freinage 39, le volet roulant peut être manipulé par tirage direct sur le tablier sans aucune difficulté.Thus, we understand that when deploying the deck, it results in the tensioning of the elastic return means 12 and, therefore, the progressive elongation of the spring 13. Beyond a given stroke of said apron and, therefore, of the elongation of a defined length of spring 13, cursor 16 comes into contact with the brake disc 39. Then, by further deploying the roller shutter deck, the spring 13 is further elongated so that the cursor 16 comes to push the brake disc 39 against the action of the spring 41. As a result, when ordering the disengaging of the disengageable connection means 11, the means of elastic return 12 relax and rotate the winding tube 2 via the cursor 16, the rotation is however slowed down under the influence of the braking 39. Meanwhile, the length of the spring 13 decreases and the brake disc 39 abuts on the axis 9. The cursor 16 then being no longer in contact with this disc of braking 39, the roller shutter can be manipulated by pulling directly on the apron without any difficulty.

Par conséquent, l'on remarquera que, là encore, l'action des moyens amortisseurs 33 peut être limitée dans la situation particulière où, en phase finale de déploiement du tablier, le couple procuré par ce dernier sur le tube d'enroulement 2 diminue progressivement jusqu'à tendre vers zéro, alors que, de leur côté, les moyens de rappel élastiques 12 sont sous contrainte maximum.Consequently, it will be noted that, here again, the action of shock absorber means 33 may be limited in the situation particular where, in the final stage of deployment of the deck, the torque provided by the latter on the winding tube 2 decreases gradually until reaching zero, whereas, from their side, the elastic return means 12 are under stress maximum.

Le mode de réalisation illustré dans le cadre des figures 13 et 14 est quelque peu particulier dans la mesure où il y a association directe entre les moyens de liaison débrayables 11 et les moyens amortisseurs 33.The embodiment illustrated in the context of FIGS. 13 and 14 is somewhat peculiar in that there are direct association between the disengageable connecting means 11 and the damping means 33.

Plus particulièrement, lesdits moyens de liaison débrayables 11 sont constitués, d'une part, par un tube de liaison 42 monté fixe en rotation sur l'arbre de sortie 10 du motoréducteur à frein 5. D'autre part, ils comportent une roue d'entraínement 43 emmanchée sur le tube de liaison 42 et rendue solidaire en rotation du tube d'enroulement 2.More particularly, said disengageable connecting means 11 consist, on the one hand, by a connecting tube 42 mounted fixed in rotation on the output shaft 10 of the brake gearmotor 5. On the other hand, they include a drive wheel 43 fitted on the connecting tube 42 and made integral in rotation with the tube winding 2.

Finalement, lesdits moyens de liaison débrayables 11 comportent un crabot 44 qui, en position embrayée, a pour but d'assurer la liaison entre le tube de liaison 42 et la roue d'entraínement 43 et, bien sûr, en position débrayée d'autoriser la libre rotation de cette dernière par rapport au motoréducteur à frein 5. Ainsi, ce crabot 44 comporte, au moins un doigt d'entraínement 45 traversant une lumière axiale 46 ménagée dans le tube de liaison 42 et venant se loger dans une rainure 47 usinée dans la paroi 48 de la roue d'entraínement 43. Finally, said disengageable connecting means 11 comprise a dog clutch 44 which, in the engaged position, aims to ensure the connection between the connecting tube 42 and the drive wheel 43 and, of course, in the disengaged position to allow free rotation of the latter relative to the brake gear motor 5. Thus, this dog 44 has at least one drive finger 45 passing through an axial lumen 46 formed in the connection tube 42 and coming to be housed in a groove 47 machined in the wall 48 of the drive wheel 43.

En exerçant une traction sur ce crabot 44 qui, par ailleurs est monté coulissant à l'intérieur du tube de liaison 42, ceci par l'intermédiaire de moyens de traction 29 tels qu'ils ont déjà été décrits plus haut, son ou ses doigts d'entraínement 45 coulissent à l'intérieur des lumières axiales 46 du tube de liaison 42 et, simultanément, dans la rainure 47 correspondante au niveau de la roue d'entraínement 43. A ce propos, cette rainure 47 comporte au moins une portion orientée axialement 47A et tant que le ou les doigts d'entraínement 45 du crabot 44 restent engagés dans cette portion axiale 47A de la rainure 47, il y a entraínement direct du tube d'entraínement 2 par le motoréducteur à frein 5.By exerting traction on this dog clutch 44 which, moreover, is slidably mounted inside the connecting tube 42, this by via traction means 29 as they have already been described above, his or her drive fingers 45 slide inside the axial slots 46 of the connecting tube 42 and, simultaneously, in the corresponding groove 47 at the level of the drive wheel 43. In this regard, this groove 47 comprises at minus an axially oriented portion 47A and as long as the one or more drive fingers 45 of the dog 44 remain engaged in this axial portion 47A of the groove 47, there is direct drive of the drive tube 2 by the brake gear motor 5.

Par ailleurs, ladite rainure 47 est, forcément, débouchante à son extrémité 49 située dans la direction duquel le crabot 44 est tiré pour obtenir le débrayage. Ainsi, lorsque sous la commande du déplacement du crabot 44 son ou ses doigts d'entraínement 45 sortent de leur rainure correspondante 47 à hauteur de cette extrémité débouchante 49, il y a débrayage, c'est à dire que le tube d'enroulement 2 peut pivoter librement par rapport au motoréducteur à frein 5.Furthermore, said groove 47 is necessarily open out at its end 49 located in the direction of which the dog 44 is pulled to get the clutch. So when under the order movement of the dog 44 his or her training fingers 45 come out of their corresponding groove 47 at the height of this through end 49, there is a declutching, that is to say that the winding tube 2 can pivot freely relative to the brake gearmotor 5.

En fait, entre cette position embrayée et la position de débrayage totale, le ou les doigts d'entraínement 45 du crabot 44 se déplacent, en outre, dans une portion de rainure 47B jouant le rôle des moyens amortisseurs 33 dont différents modes de réalisations ont d'ores et déjà été décrits.In fact, between this engaged position and the position of total disengagement, the drive finger (s) 45 of the dog clutch 44 move, in addition, in a portion of groove 47B playing the role of the damping means 33 including different modes of achievements have already been described.

Plus particulièrement, cette portion de rainure 47B est délimitée par au moins un côté de forme hélicoïdale 50 contre lequel prend appui le doigt d'entraínement 45 lorsque la roue d'entraínement 43 a tendance a être entraínée en rotation sous l'impulsion des moyens de rappel élastiques 12. More particularly, this portion of groove 47B is delimited by at least one side of helical shape 50 against which takes support the drive finger 45 when the drive wheel 43 tends to be rotated under the impulse of elastic return means 12.

Plus exactement, lorsque ces moyens de rappel élastiques 12 sont sous contrainte non compensée par le poids du tablier du volet roulant, ils ont tendance à entraíner en rotation le tube d'enroulement 2 auquel est rendu solidaire en rotation la roue d'entraínement 43. Ainsi, lorsque, dans ces conditions, l'on commande le débrayage et que, l'on exerce une traction sur le crabot 44 contre l'action d'un ressort 28B ayant tendance à le repousser, systématiquement, dans une position embrayée, son ou ses doigts d'entraínement 45 se déplacent dans la ou les lumières axiales 46 du tube de liaison 42 et, simultanément, dans la portion axiale 47A de la ou des rainures 47 ménagées dans la roue d'entraínement 43. L'on comprend bien que tant que ce ou ces doigts d'entraínement 45 sont maintenus engagés dans cette portion axiale 47A de la rainure 47, la roue d'entraínement 43, sous l'action des moyens de rappel élastiques 12, n'exerce qu'un couple sur lesdits doigts d'entraínement 45 du crabot 44.More precisely, when these elastic return means 12 are under stress not compensated by the weight of the shutter deck rolling, they tend to rotate the tube winding 2 to which the wheel is made integral in rotation 43. So when, under these conditions, we disengages and that traction is exerted on the dog 44 against the action of a spring 28B tending to push back, systematically, into a engaged position, his or her his training fingers 45 move in the light or lights axial 46 of the connecting tube 42 and, simultaneously, in the axial portion 47A of the groove or grooves 47 formed in the wheel 43. We understand that as long as this or these drive fingers 45 are kept engaged in this axial portion 47A of the groove 47, the drive wheel 43, under the action of the elastic return means 12, exerts only one torque on said drive fingers 45 of the dog 44.

Par contre, une fois dégagée de cette portion axiale 47A, de la rainure 47, la roue d'entraínement 43, sous l'action des moyens de rappel élastiques 12, agit sur le ou les doigts d'entraínement 45 de ce crabot 44 par l'intermédiaire du côté hélicoïdal 50 de la portion 47B de cette rainure 47. Aussi, les contraintes appliquées sur ce ou ces doigts d'entraínement 45 se décomposent en un couple et en une force axiale orientée en direction du débrayage du crabot 44. En fin de compte, cela a pour conséquence de repousser, progressivement, ledit crabot 44 dans sa position de débrayage contre l'action du ressort 28B et d'autoriser une rotation, tout aussi progressive, de la roue d'entraínement 43 sous l'action des moyens de rappel élastiques 12 venant, ainsi, se détendre lentement. L'on remarquera que la force de rappel du ressort 28B et le pas de l'hélice correspondant à la partie hélicoïdale 47B de la rainure 47, permettent d'intervenir sur les caractéristiques de l'amortissement ainsi obtenu. On the other hand, once released from this axial portion 47A, from the groove 47, the drive wheel 43, under the action of the means elastic return 12, acts on the drive finger (s) 45 of this dog 44 via the helical side 50 of the portion 47B of this groove 47. Also, the constraints applied to this or these drive fingers 45 decompose in a couple and in an axial force directed towards the clutch dog 44. Ultimately, this has the consequence to gradually push said dog 44 back into its position declutching against the action of spring 28B and authorizing a equally progressive rotation of the drive wheel 43 under the action of the elastic return means 12 coming, thus, slowly relax. Note that the restoring force of the spring 28B and the pitch of the propeller corresponding to the part helical 47B of groove 47, allow to intervene on the characteristics of the depreciation thus obtained.

L'on comprend que durant cette phase d'amortissement de l'action de débrayage, le crabot 44 est davantage sollicité par la roue d'entraínement 43 que par les moyens de traction 29. Par contre, une fois la position de débrayage atteinte, ces moyens de traction 29 doivent être conçus pour assurer le maintien du crabot 44 dans sa position débrayée contre l'action du ressort 28A ayant tendance à le repousser en position embrayée. Ainsi, ces moyens de traction 29 peuvent être équipés d'un levier de commande 51 ayant la possibilité d'occuper au moins deux positions d'équilibre stables correspondant à la position embrayée du crabot 44 et à la position débrayée de ce dernier.We understand that during this amortization phase of the action clutch, clutch dog 44 is more stressed by the wheel drive 43 only by the traction means 29. On the other hand, once the declutching position has been reached, these means of traction 29 must be designed to maintain the dog clutch 44 in its disengaged position against the action of the spring 28A tending to push it back into the engaged position. So, these traction means 29 can be equipped with a lever command 51 having the possibility of occupying at least two stable equilibrium positions corresponding to the position clutch dog 44 and in the disengaged position of the latter.

Se pose, alors, le cas du débrayage lorsque l'action des moyens de rappel élastiques 12 est, en réalité, compensée par le couple exercé par le poids du tablier sur le tube d'enroulement 2. Si la portion 47B de la rainure 47 est de forme hélicoïdale, il est nécessaire, lorsque les doigts d'entraínement 45 du crabot 44 s'y engagent, de commander simultanément en rotation la roue d'entraínement 43 et donc le tube d'entraínement 2 sous l'impulsion de ce crabot 44 et, donc, des moyens de traction 29. Ceci est particulièrement contraignant et nécessite la mise en place de moyens de traction 29 de résistance mécanique conçus à cet effet. En fait, pour éviter cela le côté opposé 52 de celui 50, de forme hélicoïdale, de cette portion de rainure 47B s'étend, préférentiellement, dans le prolongement de la portion axiale 47A depuis cette dernière jusqu'à l'extrémité débouchante 49 de la rainure 47.Arises, then, the case of declutching when the action of the means elastic return 12 is actually compensated by the torque exerted by the weight of the apron on the winding tube 2. If the portion 47B of the groove 47 is helical in shape, it is necessary, when the drive fingers 45 of the dog clutch 44 engage, simultaneously control the wheel in rotation drive 43 and therefore the drive tube 2 under the impulse of this dog 44 and, therefore, of the traction means 29. This is particularly restrictive and requires the implementation place of mechanical resistance traction means 29 designed to this effect. In fact, to avoid this the opposite side 52 of that 50, of helical shape, of this portion of groove 47B preferably extends in the extension of the portion axial 47A from the latter to the through end 49 of groove 47.

Plus particulièrement, il faut s'imaginer la roue d'entraínement 43 immobile en rotation. Ainsi, lors de la commande de débrayage, le ou les doigts d'entraínement 45 du crabot 44 évoluent, tout d'abord, dans la portion axiale 47A de la rainure 47. Puis, sous l'action des moyens de traction 29, ce ou ces doigts d'entraínement 45 suivent leur progression jusqu'à déboucher de ladite rainure 47 à son extrémité 49.More specifically, you have to imagine the drive wheel 43 motionless in rotation. So when the clutch control is commanded, or the drive fingers 45 of the dog 44 evolve, all first, in the axial portion 47A of the groove 47. Then, under the action of the traction means 29, this or these fingers 45 follow their progress until they lead to said groove 47 at its end 49.

Il est à noter qu'en raison de cette configuration, cette extrémité débouchante 49 d'une rainure 47 est largement ouverte et facilite le retour en position embrayée du crabot 44.Note that due to this configuration, this through end 49 of a groove 47 is wide open and facilitates the return to the engaged position of the dog clutch 44.

Au vu de la description qui précède, l'on comprend bien les avantages qui découlent de la présente invention. En effet, lorsqu'il s'agit de manoeuvrer le tablier du volet roulant en cas de dysfonctionnement du motoréducteur à frein 5, il suffit d'actionner les moyens de commande de débrayage et d'embrayage 21 afin de désolidariser, en rotation, le tube d'enroulement 2 par rapport à ce motoréducteur à frein 5 pour permettre, à un usager, notamment d'ouvrir le tablier du volet roulant en agissant, directement, sur ce tablier. Une telle manoeuvre de secours s'avère d'exécution particulièrement rapide de sorte que l'on gagne en sécurité, notamment lorsqu'il y a lieu d'évacuer, en urgence, des locaux.In view of the above description, we understand well the advantages which flow from the present invention. Indeed, when it comes to maneuvering the roller shutter deck in case malfunction of the gear motor with brake 5, it suffices actuate the clutch and clutch control means 21 in order to separate, in rotation, the winding tube 2 by compared to this brake gear motor 5 to allow a user to in particular to open the roller shutter curtain by acting, directly, on this apron. Such a rescue maneuver turns out to be particularly fast so that gains in security, especially when there is a need to evacuate, emergency, premises.

L'on observe, en outre, que ce mécanisme de commande de secours d'un volet roulant motorisé est très simple comparativement à la solution connue mettant en oeuvre un treuil exigeant pour sa commande une manivelle dont tous les volets roulants ne sont pas forcément équipés.It is further observed that this emergency control mechanism of a motorized roller shutter is very simple compared to the known solution using a winch demanding for its controls a crank with not all roller shutters necessarily equipped.

Par conséquent, il faut considérer la présente invention comme représentant un net progrès dans le domaine technique considéré.Therefore, the present invention should be viewed as representing a clear progress in the technical field considered.

Claims (19)

  1. Motorised roller blind, comprising a winding-up tube (2) for an apron maintained at its ends (6, 8) by supporting side plates (3, 4), in this winding-up tube (2) being positioned, for driving it in rotation, a tubular-type gearing motor with a brake (5), this roller blind also including manual emergency control means, characterised in that said manual emergency control means are formed by releasable connecting means (11) interposed between the outlet shaft (10) of the gearing motor and the winding-up tube (2) authorising, in the uncoupling position, the free rotation of the latter with respect to said gearing motor (5) under an action directly exerted onto said apron.
  2. Roller blind according to claim 1, characterised in that it includes, in combination, springy restoring means (12) put under stress during the unwinding of the apron and capable of exerting a restoring torque onto the winding-up tube (2) in order to drive the latter in rotation in the direction of winding-up of the apron when a pushing force is exerted onto the latter with a view to achieving the opening of said roller blind.
  3. Roller blind according to any of claims 1 and 2, characterised in that the gearing motor with a brake (5) is of a tubular type inserted into one end (6) of the winding-up tube (2) and made integral with a supporting side plate (3), said winding-up tube (2) being rotationally mounted, through adequate means (7), on said gearing motor with a brake (5).
  4. Roller blind according to any of claims 1 to 3, characterised in that to the releasable connecting means (11) are associated means for controlling the coupling and uncoupling (21).
  5. Roller blind according to claims 3 and 4, characterised in that the releasable connecting means (11) are formed by a gear differential (17) including an inlet shaft (18) coupled to the outlet shaft (10) of the gearing motor with a brake (5), a shell (19) made integral in rotation with the winding-up tube (2) and an outlet shaft (20) co-operating with the means for controlling the coupling and uncoupling (21) in the shape of unlocking or locking means for the rotation of the outlet shaft (20) of the gear differential (17).
  6. Roller blind according to claim 5, characterised in that the means for controlling the coupling and uncoupling (21) are formed by a locking axis (22) coupled to said outlet shaft (20) of the gear differential (17) and coaxially extending through a tubular axis (9) on which the winding-up tube (2) is rotationally mounted at its end (8), this locking axis (22) passing, furthermore, through the supporting side plate (4) so as to co-operate, at the level of the latter, with locking means (23) capable of immobilising or, to the contrary, releasing said locking axis (22) in rotation.
  7. Roller blind according to claims 3 and 4, characterised in that the releasable connecting means (11) are formed by two viz. truncated gears (26, 27), one of which (26) is made integral in rotation with the winding-up tube (2), whereas the other one (27) is mounted, fixed in rotation, on the outlet shaft (10) of the gearing motor with a brake (5), the means for controlling the coupling and uncoupling (21) being comprised, on the one hand, of a slidingly mounting of one (27) of these gears with respect to the outlet shaft (19) and springy restoring means (28) capable of pushing said gears (26, 27) back into a coupling position and, on the other hand, of pulling means (29) co-operating with the sliding gear (27), these pulling means (29) passing through the supporting side plate (4) while passing through a tubular axis (9) on which the end (8) of the winding-up tube (2) is rotationally mounted, this in order to make them accessible for a user.
  8. Roller blind according to claims 3 and 4, characterised in that the releasable connecting means (11) are in the shape of two plug-in parts (30, 31) that, in a plugged-in position, authorise the winding-up tube (2) to be driven through the gearing motor (5) and, on the other hand, in the uncoupling position, authorise said winding-up tube (2) to freely rotate, the means for controlling the coupling and uncoupling (21) being comprised, on the one hand, of springy restoring means (32) acting so as to maintain the parts (30, 31) into a plugged-in position and, on the other hand, of pulling means (29) made accessible for the user, in order to allow him to control the uncoupling.
  9. Roller blind according to any of claims 2 to 8, characterised in that it includes dampening means (33) associated to the releasable connecting means (11) in order to compensate for the action exerted by the springy restoring means (12) onto the winding-up tube (2) when this action is, on the other hand, not compensated for by the torque exerted by the weight of the apron onto said winding-up tube (2).
  10. Roller blind according to claims 7 to 9, characterised in that the dampening means (33) are formed by a braking ring (34) of an expandable kind, e.g. made of rubber, interposed between the gears (26, 27; 26A, 27A) or between two plug-in parts (31, 30), this braking ring (34) being capable of ensuring the contact between the latter, both in a coupling position and in an uncoupling position, so as to ensure the braking of the rotation of the gear (26; 26A) or the plug-in part (31) integral with the winding-up tube (2) when the latter is driven under the action of the springy restoring means (12).
  11. Roller blind according to any of claims 2 to 9, characterised in that the dampening means (33) are in the shape of an inertia wheel (35) rotationally mounted on an axis (9) on which the winding-up tube (2) is pivotingly mounted, this inertia wheel (35) being connected, viz. through a spring (36), to a transmission wheel (37) integral in rotation with said winding-up tube (2).
  12. Roller blind according to any of claims 2 to 9, the springy restoring means (12) of which are in the shape of a coil spring (13) accommodated inside the winding-up tube (2) and one end (14) of which is made integral with the axis (9) on which this winding-up tube (2) is rotationally mounted, whereas the opposite end (15) of this spring (13) is fixedly mounted on a slide (16) that, while being immobilised in rotation with respect to the winding-up tube (2), is capable of axially moving inside the latter, characterised in that the dampening means (33) are formed by braking means (38) in the shape of a braking disc (39) mounted, fixed in rotation, on the axis (9) and capable of co-operating with the front face (40) of the slide (16), in particular when the springy restoring means (12) are under stress.
  13. Roller blind according to claim 12, characterised in that the braking disc (39) is slidingly mounted on the axis (9) and maintained pushed back towards the slide (16), against an end thrust, by means of a spring (41).
  14. Roller blind according to any of claims 1, 2 and 9, characterised in that the releasable connecting means (11) are comprised, on the one hand, of a connecting tube (42) mounted, fixed in rotation, on the outlet shaft (10) of the gearing motor with a brake (5) and, on the other hand, of a driving wheel (43) inserted onto the connecting tube (42) and made integral in rotation with the winding-up tube (2), a dog (44) slidingly mounted inside the connecting tube (42) including, in addition, at least one drive catch (45) passing through an axial slot (46) provided for in this connecting tube (42) and being accomodated in a groove (47) provided for in the wall (48) of the driving wheel (43).
  15. Roller blind according to claim 14, characterised in that the groove (47) is comprised, starting from the coupling position and in the direction of the uncoupling position of the dog (44), of an axially oriented portion (47A) into which the drive catch (45) of said dog (44) is engaged in the uncoupling position, a portion (47B) including at least a helically shaped side (50) against which the drive catch (45) rests when the driving wheel (43) has a tendency to be driven in rotation under the action of the springy restoring means (12), this during the uncoupling, said groove (47) in addition ending at its end (49) towards which the dog (44) is moved in order to achieve the uncoupling, authorising the release of said drive catch (45) from said groove (47) and the free rotation of the driving wheel (43) and thus of the winding-up tube (2) with respect to the outlet shaft (10) of the gearing motor (5).
  16. Roller blind according to any of claims 14 and 15, characterised in that the dog (44) is subjected to the action of a spring (28B) ensuring its springy restoring into the uncoupling position.
  17. Roller blind according to any of claims 13 to 16, characterised in that it includes means for controlling the uncoupling in the shape of pulling means (29) capable of exerting onto the dog (44) a pulling force against the action of the spring (28B), in order to bring it into an uncoupling position, starting from the coupling position.
  18. Roller blind according to claim 17, characterised in that the pulling means (29) include an actuating lever (51) capable of being in at least two stable positions of balance corresponding to the coupling position of the dog (44) and to the uncoupling position of the same.
  19. Roller blind according to claim 15, characterised in that the side (52) opposite the helically shaped one (50) corresponding to portion (47B) of the groove (47) extends in the extension of the axial portion (47A), from the latter to the end (49) ending into the groove (47).
EP96440048A 1995-06-28 1996-06-13 Motorized roller shutter Expired - Lifetime EP0751278B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9507967 1995-06-28
FR9507967A FR2736086A1 (en) 1995-06-28 1995-06-28 Motorised roller shutter
FR9600639 1996-01-17
FR9600639A FR2736087B1 (en) 1995-06-28 1996-01-17 MOTORIZED SHUTTER

Publications (2)

Publication Number Publication Date
EP0751278A1 EP0751278A1 (en) 1997-01-02
EP0751278B1 true EP0751278B1 (en) 2000-01-05

Family

ID=26232070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96440048A Expired - Lifetime EP0751278B1 (en) 1995-06-28 1996-06-13 Motorized roller shutter

Country Status (5)

Country Link
EP (1) EP0751278B1 (en)
AT (1) ATE188533T1 (en)
DE (1) DE69605983T2 (en)
ES (1) ES2142563T3 (en)
FR (1) FR2736087B1 (en)

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Publication number Priority date Publication date Assignee Title
IT243113Y1 (en) * 1997-10-20 2002-02-28 Ditec S P A DEVICE FOR HANDLING FLEXIBLE VERTICAL DOORS
IT1298335B1 (en) * 1998-03-04 1999-12-20 Motus S R L DRIVE DEVICE FOR ROLLER SHUTTERS AND SIMILAR
US5975185A (en) * 1998-08-05 1999-11-02 Qmi Roll Shutter Supply Pop up safety device for rolling shutters
DE202006014936U1 (en) 2006-09-28 2008-02-21 Gebr. Bode Gmbh & Co. Kg Drive device for entry and exit devices, in particular passenger doors, entry ramps, sliding steps and the like. on public transport vehicles
DE202007010302U1 (en) * 2007-07-20 2008-12-04 SCHÜCO International KG Sun protection system with emergency lift
SE535578C2 (en) 2010-06-29 2012-10-02 Christopher Toernqvist Device for switching elongated objects
DE202011050198U1 (en) * 2011-05-20 2012-08-21 Knoke Beschlagtechnik Gmbh Winding device for a roller shutter of a cabinet furniture
FR2977627B1 (en) * 2011-07-08 2016-02-05 Somfy Sas DEVICE FOR COUPLING AND DOMOTIC INSTALLATION COMPRISING SUCH A DEVICE
FR2987090B1 (en) * 2012-02-20 2016-05-06 Simu TORQUE TRANSMISSION MECHANISM
FR2987067B1 (en) * 2012-02-20 2014-03-28 Simu ELECTROMECHANICAL ACTUATOR FOR DRIVING INTO ROTATION OF A TORQUE LIMITING LOAD
JP6053139B2 (en) * 2013-01-28 2016-12-27 林テレンプ株式会社 Shielding device
DE102018112577A1 (en) 2017-06-01 2018-12-06 Gerhard Geiger GmbH & Co. KG Unwinding device, in particular for sunshade systems, roller shutters and roller shutters, with a return device
CN107829669B (en) * 2017-12-01 2023-12-26 福建安麟智能科技股份有限公司 Manual door opening system of roller shutter door motor
FR3078095B1 (en) 2018-02-22 2020-10-23 Zurfluh Feller ROTATING DRIVE SYSTEM OF A WINDING UNIT
IT201800004927A1 (en) * 2018-04-27 2019-10-27 ELECTRIC GEAR MOTOR PERFECTED FOR ROLLING SHUTTERS.

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DE3132073A1 (en) * 1980-08-21 1982-03-25 Emil Schenker AG, 5012 Schönenwerd Slatted blind which is driven by an electric motor and has an emergency drive
DE3504489A1 (en) * 1985-02-09 1986-08-14 Lothar 7984 Wolpertswende Huber Device for manual operation of the winding shaft, which can be driven by an electric motor, for example of a roller shutter in the case of the electric motor being unpowered
FR2631076A1 (en) * 1988-05-09 1989-11-10 Technigroup Safety manoeuvre mechanism for closure devices driven by a tubular back-geared motor with magnetic braking
DE9416817U1 (en) * 1994-10-19 1994-12-08 Leichtmetallbau Mauderer GmbH, 88161 Lindenberg Emergency opening mechanism for electric blinds

Also Published As

Publication number Publication date
FR2736087B1 (en) 1998-01-09
FR2736087A1 (en) 1997-01-03
ATE188533T1 (en) 2000-01-15
EP0751278A1 (en) 1997-01-02
ES2142563T3 (en) 2000-04-16
DE69605983D1 (en) 2000-02-10
DE69605983T2 (en) 2000-08-17

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