EP0534832A1 - Torque transformer for sliding doors - Google Patents

Torque transformer for sliding doors Download PDF

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Publication number
EP0534832A1
EP0534832A1 EP92402583A EP92402583A EP0534832A1 EP 0534832 A1 EP0534832 A1 EP 0534832A1 EP 92402583 A EP92402583 A EP 92402583A EP 92402583 A EP92402583 A EP 92402583A EP 0534832 A1 EP0534832 A1 EP 0534832A1
Authority
EP
European Patent Office
Prior art keywords
transmission member
torque
door
leaf spring
clutch
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.)
Withdrawn
Application number
EP92402583A
Other languages
German (de)
French (fr)
Inventor
Pierre Beauchot
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.)
Fermod SA
Original Assignee
Fermod SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fermod SA filed Critical Fermod SA
Publication of EP0534832A1 publication Critical patent/EP0534832A1/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/56—Suspension arrangements for wings with successive different movements
    • E05D15/565—Suspension arrangements for wings with successive different movements for raising wings before sliding
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/632—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings
    • E05F15/643—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by flexible elongated pulling elements, e.g. belts, chains or cables
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/632—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings
    • E05F15/643—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by flexible elongated pulling elements, e.g. belts, chains or cables
    • E05F15/646—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by flexible elongated pulling elements, e.g. belts, chains or cables allowing or involving a secondary movement of the wing, e.g. rotational or transversal
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/43—Motors
    • E05Y2201/434—Electromotors; Details thereof
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/638—Cams; Ramps
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/684—Rails; Tracks
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/73—Multiple functions
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/102—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for cold-rooms

Definitions

  • the subject of the invention is a torque variator for a sliding door, in particular for an insulated watertight door fitted to a cold store.
  • sliding doors are usually equipped at their upper part with guide rollers thanks to which they are suspended from a sliding rail, and they move between a closed position to guarantee perfect sealing, and an open position. So that when closing, the seal is ensured, it is known to equip the sliding rail with notches oriented downwards and judiciously arranged, so that when the rollers descend into these notches, the door undergoes a identical movement of descent which applies the door seals to the floor as well as to the frame of the frame.
  • a currently widespread solution consists in connecting the door to a movement transmission member constituted for example by an endless chain or belt returning on two pinions, each placed at a end of the door travel zone.
  • a clutch linked to a motorization ensures the transmission of movement between a geared motor group and a drive pinion.
  • the torque exerted by the clutch is sufficient, not only to detach the door from the seals against which it is applied and to overcome the friction resulting therefrom, but also to disengage the rollers from their notches in order to reassemble the door on the horizontal running part of the rail.
  • these insulated doors are often heavy, the effort required is significant, but only during the very first phase of opening the door.
  • this second booster or start-up group has a power and develops a torque greater than that of the first, and advantageously its output shaft carries a cam which cooperates with a roller carried by the door, a cam whose active part exerts briefly, and in less than a turn, a significant force on the roller to release the door from the notches, as described in FR-A 2 451 445 in the name of the Applicant.
  • the invention provides a new and effective solution to these problems, in that it uses the geared motor group necessary for moving the door, but by associating it with a torque variator device which modulates the pressure exerted by the clutch when starting the opening movement, in relation to the continuous movement of the door.
  • a torque variator device which modulates the pressure exerted by the clutch when starting the opening movement, in relation to the continuous movement of the door.
  • a main object of the present invention therefore consists of a torque variator for a door. sliding moved on a rail by a transmission member such as a belt, driven by a single motor and comprising a main variator recalled by a spring for adjusting the clutch torque, variator which comprises an additional device controlled by the member transmission itself, and which changes the clutch torque of the main variator - during the first phase of door opening.
  • a transmission member such as a belt
  • variator which comprises an additional device controlled by the member transmission itself, and which changes the clutch torque of the main variator - during the first phase of door opening.
  • the additional device consists of a needle modifying the pressure exerted on a clutch ring of the drive pulley of the transmission member, under the action of a leaf spring, the displacement is slaved to the displacement of the transmission member.
  • the movement of the leaf spring to the transmission member is enslaved by a screw retaining said leaf which moves inside a threaded well constituting the fixed axis of rotation of a wheel driven by said transmission member.
  • the needle is mounted in a threaded cradle secured to the leaf spring, which carries a transverse spacer serving to support a T-shaped screw head.
  • the door 9 In the position shown, the door 9 is closed and the carrier rollers are immobilized in two notches 4 provided on the rail.
  • the door is driven from this position to an open position - shown in dotted lines - by an endless belt 5 to the lower strand from which it is attached by a connecting member 6.
  • the belt returns to a tension pulley 7 and to a drive pulley 8 forming part of the motorization group designated as a whole by the reference 1.
  • FIG. 2 The latter is shown in more detail in FIG. 2. It comprises a geared motor 10 for driving the driving pulley 8 on which the toothed belt meshes 5. This drive is provided by means of clutch crowns 11 fitted with linings 12 which can enclose the inside flanks of the pulley like a jaw.
  • a stop 14, bearing on a clutch ring 11, is integral with a rod 13 axially passing through the pulley and the motor, said rod being biased downwards by a return spring 15 housed in a cup 16, a spring of which the restoring force is adjusted by the adjusting screw 17.
  • the only force of the spring 15 exerts a fairly low clutch pressure but sufficient to drive the pulley 8, the belt 5 and therefore the door 9 in the horizontal displacement zone opening or closing.
  • This assembly constitutes the main variator which allows the adjustment of the clutch torque.
  • the main variator is completed by an additional device which modifies the clutch torque of the main variator during the first phase of opening the door and which consists of a needle 18 mounted in a threaded cradle 19, a needle whose point lower abuts against the stop 14.
  • the cradle 19 is integral with a leaf spring 20 developing on one side of the toothed belt. We see in Figure 3 the profile of this blade 20, which is attached to a plate 21, which receives the cradle 19.
  • the plate 21 is fixed, on the opposite side to the blade, to a shaft 22.
  • the end of the spring blade 20, consequently liable to deviate more or less from the toothed belt 5, carries a transverse spacer 23, serving itself a support for the head 28 in the T shape of a screw 24 which can slide in a guide well 25 fixedly mounted on the other side of the belt 5.
  • This well 25 constitutes the axis of rotation d 'a toothed wheel 26 mounted on the axis via the bearings 27. Said wheel is driven by the toothed belt between the strands of which it is placed. Its internal axis is tapped so that its rotation acts on the thread of the screw 24 which then moves transversely in the guide well, driving the head 28 to move the leaf spring 20 from the position shown in Figure 2 for reach the position shown in figure 4.
  • the screw therefore slides in the well 25, its rotation being blocked by a hexagonal nut 29. In this way, the movement of the leaf spring is therefore controlled by the movement of the belt.
  • FIG. 2 shows the device when the sliding door is closed, that is to say when its carrier rollers are immobilized in the notches.
  • the screw 24 occupies, inside the guide well 25, the position shown for which the T-shaped head 28 maintains the leaf spring 20 by exerting on it a pressure which is transmitted by the plate 21 to the needle 18.
  • This pressure significantly completes - due to the lever arm that constitutes the blade 20 - the normal pressure exerted by the spring 15 on the clutch crowns 11.
  • the "tight" clutch of the driving pulley will thus favor the exit of the sliding door, out of its notches when starting the gear motor.
  • the belt 5 moves in the opposite direction and inversely actuates the toothed wheel 26 which has the effect of moving the screw 24 towards the interior of the well.
  • the head 28 then drives the leaf spring 20 in the direction of the belt causing a progressive increase in the force exerted by the needle 18 on the clutch stop.
  • the clutch pressure is maximum; the device is ready for reopening.
  • Adjustments are provided at the needle 18 and the screw 24 to adapt their movement to the stroke and the weight of the door.
  • the invention is not limited to the example of description shown but also encompasses the variants, in particular as regards the method of driving the door which can also use a chain, etc.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

The torque transformer comprises an additional device consisting of a needle 18 changing the pressure exerted on the clutch ring 11 of the driving pulley 8 of the belt 5. It is mounted on a leaf spring 20, the displacement of which is governed by that of a screw 24 which is displaced in the axis of rotation 25 of a gearwheel 26 driven by the belt. The invention is used for operating a sealing door of a refrigerating storeroom. <IMAGE>

Description

L'invention a pour objet un variateur de couple pour porte coulissante, notamment pour une porte étanche isotherme équipant un entrepôt frigorifique.The subject of the invention is a torque variator for a sliding door, in particular for an insulated watertight door fitted to a cold store.

Ces portes coulissantes sont habituellement équipées à leur partie supérieure de galets de guidage grâce auxquels elles sont suspendues à un rail de coulissement, et elles se déplacent entre une position de fermeture devant garantir une parfaite étanchéïté, et une position d'ouverture. Pour que lors de la fermeture, l'étanchéïté soit assurée, il est connu d'équiper le rail de coulissement d'encoches orientées vers le bas et judicieusement disposées, de telle sorte que lorsque les galets descendent dans ces encoches, la porte subisse un mouvement identique de descente qui applique les joints de porte au sol ainsi que sur l'huisserie du dormant. Il existe différents moyens automatiques pour déplacer une telle porte. En dehors des dispositifs pneumatiques ou des vérins électriques, une solution actuellement répandue consiste à relier la porte à un organe de transmission de mouvement constitué par exemple d'une chaîne ou d'une courroie sans fin faisant retour sur deux pignons, chacun placé à une extrémité de la zone de débattement de la porte. Un embrayage lié à une motorisation assure la transmission du mouvement entre un groupe moto-réducteur et un pignon d'entraînement. Bien entendu il faut, au moment de l'ouverture de la porte, que le couple exercé par l'embrayage soit suffisant, non seulement pour décoller la porte des joints contre lesquels elle est appliquée et pour vaincre les frottements en résultant, mais aussi pour dégager les galets de leurs encoches afin de remonter la porte sur la partie courante horizontale du rail. Comme ces portes isothermes sont souvent lourdes, l'effort demandé est important, mais seulement pendant la toute première phase d'ouverture de la porte. Aussi règle-t-on la pression exercée sur l'embrayage pour que la porte puisse sortir des encoches ; mais ce réglage non modulable s'avère trop puissant quand la porte est sortie de ses encoches et se déplace sur le rail, ce qui présente un inconvénient quand on inverse le sens de translation car cela provoque des à-coups inacceptables. Certes, on pourrait obtenir une variation de couple en utilisant un moteur à courant continu, mais cette solution est beaucoup plus onéreuse et nécessite de prendre des précautions de sécurité particulières.These sliding doors are usually equipped at their upper part with guide rollers thanks to which they are suspended from a sliding rail, and they move between a closed position to guarantee perfect sealing, and an open position. So that when closing, the seal is ensured, it is known to equip the sliding rail with notches oriented downwards and judiciously arranged, so that when the rollers descend into these notches, the door undergoes a identical movement of descent which applies the door seals to the floor as well as to the frame of the frame. There are various automatic means for moving such a door. Apart from pneumatic devices or electric jacks, a currently widespread solution consists in connecting the door to a movement transmission member constituted for example by an endless chain or belt returning on two pinions, each placed at a end of the door travel zone. A clutch linked to a motorization ensures the transmission of movement between a geared motor group and a drive pinion. Of course it is necessary, when the door is opened, that the torque exerted by the clutch is sufficient, not only to detach the door from the seals against which it is applied and to overcome the friction resulting therefrom, but also to disengage the rollers from their notches in order to reassemble the door on the horizontal running part of the rail. As these insulated doors are often heavy, the effort required is significant, but only during the very first phase of opening the door. Also we regulate the pressure on the clutch so that the door can come out of the notches; but this non-adjustable setting proves to be too powerful when the door has come out of its notches and moves on the rail, which has a drawback when the direction of translation is reversed as this causes unacceptable jolts. Admittedly, one could obtain a variation of torque by using a DC motor, but this solution is much more expensive and requires taking special safety precautions.

Pour pallier à cet inconvénient, on a pensé à utiliser deux groupes moto-réducteur, l'un pour l'entraînement de la porte à plat sur le rail et l'autre pour servir d'appoint uniquement pour assurer la sortie des encoches. A cet effet ce second groupe d'appoint ou de démarrage présente une puissance et développe un couple supérieurs à ceux du premier, et avantageusement son arbre de sortie porte une came qui coopère avec un rouleau porté par la porte, came dont la partie active exerce de façon brève, et en moins d'un tour une force importante sur le rouleau pour dégager la porte des encoches, comme décrit dans le FR-A 2 451 445 au nom de la Demanderesse.To overcome this drawback, we thought of using two geared motor groups, one for driving the door flat on the rail and the other to serve as a backup only to ensure the exit of the notches. To this end, this second booster or start-up group has a power and develops a torque greater than that of the first, and advantageously its output shaft carries a cam which cooperates with a roller carried by the door, a cam whose active part exerts briefly, and in less than a turn, a significant force on the roller to release the door from the notches, as described in FR-A 2 451 445 in the name of the Applicant.

Cette solution n'est cepandant pas toujours satisfaisante, car elle impose deux moto-réducteurs avec des dispositifs de synchronisation, qui apparaissent encombrants.This solution is however not always satisfactory, because it requires two geared motors with synchronization devices, which appear bulky.

L'invention apporte une solution nouvelle et efficace à ces problèmes, en ce qu'elle utilise le groupe moto-réducteur nécessaire au déplacement de la porte, mais en l'associant avec un dispositif variateur de couple qui module la pression exercée par l'embrayage au moment du démarrage du mouvement d'ouverture, par rapport au déplacement continu de la porte. Ainsi l'ouverture se fait en deux phases. La première consiste à sortir la porte des encoches, la seconde assure la translation de celle-ci jusqu'à l'ouverture maximum, et ceci avec des efforts différents et appropriés, offrant plus de souplesse dans le fonctionnement.The invention provides a new and effective solution to these problems, in that it uses the geared motor group necessary for moving the door, but by associating it with a torque variator device which modulates the pressure exerted by the clutch when starting the opening movement, in relation to the continuous movement of the door. Thus the opening is done in two phases. The first consists in removing the door from the notches, the second ensures the translation thereof until the maximum opening, and this with different and appropriate efforts, offering more flexibility in operation.

Un objet principal de la présente invention consiste donc en un variateur de couple pour porte coulissante déplacée sur un rail par un organe de transmission tel qu'une courroie, entraîné par un moteur unique et comportant un variateur principal rappelé par un ressort pour le réglage du couple d'embrayage, variateur qui comporte un dispositif supplémentaire commandé par l'organe de transmission lui-même, et qui modifie le couple d'embrayage du variateur principal -lors de la première phase d'ouverture de la porte.A main object of the present invention therefore consists of a torque variator for a door. sliding moved on a rail by a transmission member such as a belt, driven by a single motor and comprising a main variator recalled by a spring for adjusting the clutch torque, variator which comprises an additional device controlled by the member transmission itself, and which changes the clutch torque of the main variator - during the first phase of door opening.

Selon une caractéristique particulière de l'invention, le dispositif supplémentaire est constitué d'un pointeau modifiant la pression exercée sur une couronne d'embrayage de la poulie motrice de l'organe de transmission, sous l'action d'une lame ressort dont le déplacement est asservi au déplacement de l'organe de transmission. D'autre part l'asservissement du déplacement de la lame-ressort à l'organe de transmission est assuré par une vis retenant ladite lame qui se déplace à l'intérieur d'un puits taraudé constituant l'axe fixe de rotation d'une roue entraînée par ledit organe de transmission.According to a particular characteristic of the invention, the additional device consists of a needle modifying the pressure exerted on a clutch ring of the drive pulley of the transmission member, under the action of a leaf spring, the displacement is slaved to the displacement of the transmission member. On the other hand, the movement of the leaf spring to the transmission member is enslaved by a screw retaining said leaf which moves inside a threaded well constituting the fixed axis of rotation of a wheel driven by said transmission member.

Selon une autre caractéristique de l'invention, le pointeau est monté dans un berceau fileté solidaire de la lame-ressort, laquelle porte une entretoise transversale servant de support à une tête de vis en forme de T.According to another characteristic of the invention, the needle is mounted in a threaded cradle secured to the leaf spring, which carries a transverse spacer serving to support a T-shaped screw head.

Les caractéristiques particulières et avantages de l'invention ressortiront maintenant de la description qui va suivre d'un exemple non limitatif de réalisation faisant référence aux dessins annexés qui représentent :

  • figure 1 : une vue schématique en élévation d'une porte coulissante et de la courroie d'entraînement
  • figure 2 et 3 : des vues en coupe et en plan, à plus grande échelle, du groupe de motorisation avec son variateur de couple
  • figure 4 : une vue partielle du variateur de couple selon la figure 1 dans une autre position de fonctionnement.
The particular characteristics and advantages of the invention will now emerge from the description which follows of a nonlimiting example of embodiment referring to the appended drawings which represent:
  • Figure 1: a schematic elevation view of a sliding door and the drive belt
  • Figure 2 and 3: sectional and plan views, on a larger scale, of the power unit with its torque variator
  • Figure 4: a partial view of the torque converter according to Figure 1 in another operating position.

On a représenté schématiquement à la figure 1 une porte coulissante 9 suspendue par des galets 2 à un rail de coulissement 3.There is shown schematically in Figure 1 a sliding door 9 suspended by rollers 2 from a sliding rail 3.

Dans la position représentée la porte 9 est fermée et les galets porteurs se trouvent immobilisés dans deux encoches 4 prévues sur le rail. La porte est entraînée de cette position à une position d'ouverture - représentée en pointillés - par une courroie sans fin 5 au brin inférieur de laquelle elle est rattachée par un organe de liaison 6.In the position shown, the door 9 is closed and the carrier rollers are immobilized in two notches 4 provided on the rail. The door is driven from this position to an open position - shown in dotted lines - by an endless belt 5 to the lower strand from which it is attached by a connecting member 6.

La courroie fait retour sur une poulie de tension 7 et sur une poulie motrice 8 faisant partie du groupe de motorisation désigné dans son ensemble par la référence 1.The belt returns to a tension pulley 7 and to a drive pulley 8 forming part of the motorization group designated as a whole by the reference 1.

Ce dernier est représenté plus en détail à la figure 2. Il comprend un motoréducteur 10 d'entraînement de la poulie motrice 8 sur laquelle engrène la courroie crantée 5. Cet entraînement est assuré par l'intermédiaire de couronnes d'embrayage 11 équipées de garnitures 12 qui peuvent enserrer comme une mâchoire les flancs intérieurs de la poulie.The latter is shown in more detail in FIG. 2. It comprises a geared motor 10 for driving the driving pulley 8 on which the toothed belt meshes 5. This drive is provided by means of clutch crowns 11 fitted with linings 12 which can enclose the inside flanks of the pulley like a jaw.

Une butée 14, en appui sur une couronne d'embrayage 11, est solidaire d'une tige 13 traversant axialement la poulie et le moteur, ladite tige étant rappelée vers le bas par un ressort de rappel 15 logé dans une coupelle 16, ressort dont la force de rappel est réglée par la vis de réglage 17. La seule force du ressort 15 exerce une pression d'embrayage assez faible mais suffisante pour entraîner la poulie 8, la courroie 5 et par conséquent la porte 9 dans la zone horizontale de déplacement d'ouverture ou de fermeture. Cet ensemble constitue le variateur principal qui permet le réglage du couple d'embrayage. Le variateur principal est complété par un dispositif supplémentaire qui modifie le couple d'embrayage du variateur principal lors de la première phase d'ouverture de la porte et qui est constitué d'un pointeau 18 monté dans un berceau fileté 19, pointeau dont la pointe inférieure vient en appui contre la butée 14. Le berceau 19 est solidaire d'une lame-ressort 20 se développant sur un coté de la courroie crantée. On voit à la figure 3 le profil de cette lame 20, qui est rapportée sur une plaque 21, laquelle reçoit le berceau 19.A stop 14, bearing on a clutch ring 11, is integral with a rod 13 axially passing through the pulley and the motor, said rod being biased downwards by a return spring 15 housed in a cup 16, a spring of which the restoring force is adjusted by the adjusting screw 17. The only force of the spring 15 exerts a fairly low clutch pressure but sufficient to drive the pulley 8, the belt 5 and therefore the door 9 in the horizontal displacement zone opening or closing. This assembly constitutes the main variator which allows the adjustment of the clutch torque. The main variator is completed by an additional device which modifies the clutch torque of the main variator during the first phase of opening the door and which consists of a needle 18 mounted in a threaded cradle 19, a needle whose point lower abuts against the stop 14. The cradle 19 is integral with a leaf spring 20 developing on one side of the toothed belt. We see in Figure 3 the profile of this blade 20, which is attached to a plate 21, which receives the cradle 19.

La plaque 21 est fixée, du côté opposé à la lame, à un arbre 22. L'extrémité de la lame ressort 20, susceptible par conséquent de s'écarter plus ou moins de la courroie crantée 5, porte une entretoise transversale 23, servant elle-même de support à la tête 28 en forme de T d'une vis 24 pouvant coulisser dans un puits de guidage 25 monté de façon fixe de l'autre coté de la courroie 5. Ce puits 25 constitue l'axe de rotation d'une roue dentée 26 montée sur l'axe par l'intermédiaire des paliers 27. Ladite roue est entraînée par la courroie crantée entre les brins de laquelle elle se place. Son axe intérieur est taraudé de telle sorte que sa rotation agit sur le filetage de la vis 24 qui se déplace alors transversalement dans le puits de guidage, entraînant la tête 28 pour écarter la lame-ressort 20 de la position représentée à la figure 2 pour atteindre la position représentée à la figure 4.The plate 21 is fixed, on the opposite side to the blade, to a shaft 22. The end of the spring blade 20, consequently liable to deviate more or less from the toothed belt 5, carries a transverse spacer 23, serving itself a support for the head 28 in the T shape of a screw 24 which can slide in a guide well 25 fixedly mounted on the other side of the belt 5. This well 25 constitutes the axis of rotation d 'a toothed wheel 26 mounted on the axis via the bearings 27. Said wheel is driven by the toothed belt between the strands of which it is placed. Its internal axis is tapped so that its rotation acts on the thread of the screw 24 which then moves transversely in the guide well, driving the head 28 to move the leaf spring 20 from the position shown in Figure 2 for reach the position shown in figure 4.

La vis a donc coulissé dans le puits 25, sa rotation étant bloquée par un écrou hexagonal 29. De cette façon, le déplacement de la lame-ressort est donc asservi au déplacement de la courroie.The screw therefore slides in the well 25, its rotation being blocked by a hexagonal nut 29. In this way, the movement of the leaf spring is therefore controlled by the movement of the belt.

La figure 2 montre le dispositif quand la porte coulissante est fermée c'est-à-dire quand ses galets porteurs sont immobilisés dans les encoches. La vis 24 occupe, à l'intérieur du puits de guidage 25, la position représentée pour laquelle la tête 28 en forme de T maintient la lame-ressort 20 en exerçant sur elle une pression qui se transmets par la plaque 21 au pointeau 18. Cette pression complète de façon importante - du fait du bras de levier que constitue la lame 20 - la pression normale qu'exerce le ressort 15 sur les couronnes d'embrayage 11. L'embrayage "serré" de la poulie motrice, favorisera ainsi la sortie de la porte coulissante, hors de ses encoches lors de la mise en route du moto-réducteur.FIG. 2 shows the device when the sliding door is closed, that is to say when its carrier rollers are immobilized in the notches. The screw 24 occupies, inside the guide well 25, the position shown for which the T-shaped head 28 maintains the leaf spring 20 by exerting on it a pressure which is transmitted by the plate 21 to the needle 18. This pressure significantly completes - due to the lever arm that constitutes the blade 20 - the normal pressure exerted by the spring 15 on the clutch crowns 11. The "tight" clutch of the driving pulley, will thus favor the exit of the sliding door, out of its notches when starting the gear motor.

Dès que la porte est donc sortie de ses encoches et commence à rouler sur la partie horizontale des rails de coulissement, le déplacement de la courroie crantée 5 a entraîné en rotation la roue dentée 26. Cela a pour effet immédiat de déplacer transversalement la vis 24 (figure 4) dont la tête 28 libère l'extrémité de la lame-ressort 20 qui s'écarte de la courroie 5. La pression exercée par le pointeau 18 sur la butée 14 s'atténue puis disparaît.As soon as the door is out of its notches and begins to roll on the horizontal part of the rails sliding, the movement of the toothed belt 5 has rotated the toothed wheel 26. This has the immediate effect of transversely moving the screw 24 (Figure 4) whose head 28 releases the end of the leaf spring 20 which s moves away from the belt 5. The pressure exerted by the needle 18 on the stop 14 attenuates then disappears.

De ce fait la pression d'embrayage exercée par les couronnes 11 sur la poulie motrice 8, résulte uniquement de la force du ressort 15 dont on a vu qu'elle était réglable grâce à la vis 17. La pression d'embrayage étant ainsi beaucoup plus faible que lors du démarrage de la porte, l'entraînement de cette dernière est plus souple. Cela veut dire que en cas d'obstruction à l'ouverture ou à la fermeture ou par une simple opposition de la main, l'embrayage pourra patiner et la porte s'immobilisera sans difficulté. De même si on veut inverser le sens de translation de la porte avant son arrivée en fin de course, la souplesse de l'embrayage limitera les à-coups qui pourraient en résulter.Therefore the clutch pressure exerted by the crowns 11 on the drive pulley 8, results only from the force of the spring 15 which we have seen that it was adjustable by means of the screw 17. The clutch pressure being thus much lower than when starting the door, the drive of the latter is more flexible. This means that in the event of an obstruction when opening or closing or by simply opposing the hand, the clutch may slip and the door will stop without difficulty. Similarly if you want to reverse the direction of translation of the door before it reaches the end of the race, the flexibility of the clutch will limit the jolts that could result.

Lors de la fermeture de la porte, la courroie 5 se déplace en sens inverse et actionne inversement la roue dentée 26 ce qui a pour effet de déplacer la vis 24 vers l'intérieur du puits.When the door is closed, the belt 5 moves in the opposite direction and inversely actuates the toothed wheel 26 which has the effect of moving the screw 24 towards the interior of the well.

La tête 28 entraîne alors la lame-ressort 20 en direction de la courroie provoquant une augmentation progressive de la force exercée par le pointeau 18 sur la butée d'embrayage. Quand la porte est fermée et les galets porteurs à nouveau immobilisés dans leurs encoches, la pression d'embrayage est maximun ; le dispositif est prêt pour une réouverture.The head 28 then drives the leaf spring 20 in the direction of the belt causing a progressive increase in the force exerted by the needle 18 on the clutch stop. When the door is closed and the carrier rollers again immobilized in their notches, the clutch pressure is maximum; the device is ready for reopening.

Des réglages sont prévus au niveau du pointeau 18 et de la vis 24 pour adapter leurs déplacement à la course et au poids de la porte.Adjustments are provided at the needle 18 and the screw 24 to adapt their movement to the stroke and the weight of the door.

L'invention ne se limite pas à l'exemple de description représenté mais englobe aussi les variantes, notamment en ce qui concerne le mode d'entraînement de la porte qui peut utiliser aussi une chaîne,...etc.The invention is not limited to the example of description shown but also encompasses the variants, in particular as regards the method of driving the door which can also use a chain, etc.

Claims (7)

Variateur de couple pour porte coulissante déplacée sur un rail par un organe de transmission tel qu'une courroie entraîné par un moteur unique et comportant un variateur principal rappelé par un ressort pour le réglage du couple d'embrayage caractérisé en ce qu'il comporte un dispositif supplémentaire (18, 20, 24, 26) commandé par l'organe de transmission lui-même 5, qui modifie le couple d'embrayage du variateur principal (11, 8, 15) lors de la première phase d'ouverture de la porte 9.Torque variator for sliding door moved on a rail by a transmission member such as a belt driven by a single motor and comprising a main variator recalled by a spring for adjusting the clutch torque, characterized in that it comprises a additional device (18, 20, 24, 26) controlled by the transmission member itself 5, which modifies the clutch torque of the main variator (11, 8, 15) during the first phase of opening the door 9. Variateur de couple selon la revendication 1 caractérisé en ce que le dispositif supplémentaire est constitué d'un pointeau 18 modifiant la pression exercée sur une couronne d'embrayage 11 de la poulie motrice 8 de l'organe de transmission 5, sous l'action d'une lame-ressort 20 dont le déplacement est asservi au déplacement de l'organe de transmission.Torque variator according to claim 1 characterized in that the additional device consists of a needle 18 modifying the pressure exerted on a clutch ring 11 of the drive pulley 8 of the transmission member 5, under the action of 'A leaf spring 20 whose movement is controlled by the movement of the transmission member. Variateur de couple selon les revendications 1 et 2 caractérisé en ce que l'asservissement du déplacement de la lame-ressort 20 à l'organe de transmission 5 est assuré par une vis 24 retenant ladite lame qui se déplace à l'intérieur d'un puits taraudé 25 constituant l'axe fixe de rotation d'une roue 26 entraînée par ledit organe de transmission.Torque variator according to claims 1 and 2 characterized in that the control of the movement of the leaf spring 20 to the transmission member 5 is ensured by a screw 24 retaining said blade which moves inside a threaded well 25 constituting the fixed axis of rotation of a wheel 26 driven by said transmission member. Variateur de couple selon la revendication 2 caractérisé en ce que le pointeau 18 est monté dans un berceau fileté 19 solidaire de la lame-ressort 20 qui se développe sur un côté de l'organe de transmission 5.Torque variator according to claim 2 characterized in that the needle 18 is mounted in a threaded cradle 19 secured to the leaf spring 20 which develops on one side of the transmission member 5. variateur de couple selon la revendication 3 caractérisé en ce que l'extrémité de la lame-ressort 20 porte une entretoise transversale 23 servant de support à une tête 28 en forme de T de la vis 24.torque variator according to claim 3 characterized in that the end of the leaf spring 20 carries a transverse spacer 23 serving to support a T-shaped head 28 of the screw 24. Variateur de couple selon la revendication 3, caractérisé en ce que la rotation de la vis 24, coulissante à l'intérieur du puits 25, est bloquée par un écrou 29.Torque variator according to claim 3, characterized in that the rotation of the screw 24, sliding inside the well 25, is blocked by a nut 29. Variateur de couple selon les revendications 1 à 3 caractérisé en ce que l'organe de transmission est une courroie continue crantée 5 entre les brins de laquelle se place la roue dentée 26.Torque variator according to Claims 1 to 3, characterized in that the transmission member is a continuous toothed belt 5 between the strands of which the toothed wheel 26 is placed.
EP92402583A 1991-09-26 1992-09-21 Torque transformer for sliding doors Withdrawn EP0534832A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9111840A FR2681899B1 (en) 1991-09-26 1991-09-26 TORQUE DRIVE FOR SLIDING DOOR.
FR9111840 1991-09-26

Publications (1)

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EP0534832A1 true EP0534832A1 (en) 1993-03-31

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EP92402583A Withdrawn EP0534832A1 (en) 1991-09-26 1992-09-21 Torque transformer for sliding doors

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EP (1) EP0534832A1 (en)
CA (1) CA2079178A1 (en)
FR (1) FR2681899B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2866669A1 (en) * 2004-02-20 2005-08-26 Cemap Partition e.g. fire door, movement controlling device, has current transformer rectifier unit providing holding current to motor based on force necessary for preventing reverse rotation of rotor, and resistor absorbing electromotive force
CN112593799A (en) * 2020-12-03 2021-04-02 常州市大成真空技术有限公司 Sliding door mechanism and vacuum plate valve

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2821878B1 (en) 2001-03-09 2004-02-13 Fermod PROCESS FOR THE PILOTAGE OF THE MANEUVER OF SLIDING DOORS INTENDED FOR REFRIGERATION CHAMBERS AND DEVICE FOR IMPLEMENTING THE PROCESS

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Publication number Priority date Publication date Assignee Title
US2840207A (en) * 1952-09-02 1958-06-24 Schuler L Ag Overload safety device for power machine tools
FR2451445A1 (en) * 1979-03-12 1980-10-10 Fermod OPERATING DEVICE FOR SLIDING WATERPROOF DOOR
EP0102872A1 (en) * 1982-07-28 1984-03-14 Faiveley Entreprises Device for operating a door in two successive steps, and door equipped with such a device
DE3631576A1 (en) * 1986-09-17 1988-03-31 Rhein Getriebe Gmbh Device for the closing and opening of doors

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840207A (en) * 1952-09-02 1958-06-24 Schuler L Ag Overload safety device for power machine tools
FR2451445A1 (en) * 1979-03-12 1980-10-10 Fermod OPERATING DEVICE FOR SLIDING WATERPROOF DOOR
EP0102872A1 (en) * 1982-07-28 1984-03-14 Faiveley Entreprises Device for operating a door in two successive steps, and door equipped with such a device
DE3631576A1 (en) * 1986-09-17 1988-03-31 Rhein Getriebe Gmbh Device for the closing and opening of doors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2866669A1 (en) * 2004-02-20 2005-08-26 Cemap Partition e.g. fire door, movement controlling device, has current transformer rectifier unit providing holding current to motor based on force necessary for preventing reverse rotation of rotor, and resistor absorbing electromotive force
CN112593799A (en) * 2020-12-03 2021-04-02 常州市大成真空技术有限公司 Sliding door mechanism and vacuum plate valve

Also Published As

Publication number Publication date
FR2681899A1 (en) 1993-04-02
CA2079178A1 (en) 1993-03-27
FR2681899B1 (en) 1993-12-24

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