WO1994012751A1 - Mechanism for controlling a double door sliding along an arc of a circle, and lift provided therewith - Google Patents

Mechanism for controlling a double door sliding along an arc of a circle, and lift provided therewith Download PDF

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Publication number
WO1994012751A1
WO1994012751A1 PCT/CH1993/000265 CH9300265W WO9412751A1 WO 1994012751 A1 WO1994012751 A1 WO 1994012751A1 CH 9300265 W CH9300265 W CH 9300265W WO 9412751 A1 WO9412751 A1 WO 9412751A1
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WO
WIPO (PCT)
Prior art keywords
transmission
arc
door
arm
leaves
Prior art date
Application number
PCT/CH1993/000265
Other languages
French (fr)
Inventor
Jean-Marie Affolter
Original Assignee
Renolift Otis S.A.
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 Renolift Otis S.A. filed Critical Renolift Otis S.A.
Priority to DE69302264T priority Critical patent/DE69302264T2/en
Priority to EP93924493A priority patent/EP0625238B1/en
Publication of WO1994012751A1 publication Critical patent/WO1994012751A1/en

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Classifications

    • 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
    • E05F15/649—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by swinging arms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • 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
    • E05Y2900/13—Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
    • E05Y2900/132—Doors

Definitions

  • the present invention relates to a mechanism for controlling a door with two leaves with central opening by sliding the leaves in opposite directions along a horizontal arc, comprising two pivoting control arms which each cooperate with a leaf for the 'drive and which are mounted on a vertical axis joint near the center of the arc, a motor, and transmission means connecting the motor to the control arms by at least one flexible traction member.
  • the invention applies in particular, but not exclusively, to the control of the doors of elevator cars. This is why the invention also relates to an elevator comprising a cabin provided with a door with two leaves having a central opening by sliding the leaves in opposite directions along a horizontal arc, the cabin door being provided a control mechanism of the kind indicated above.
  • a mechanism of this type is known, marketed by the company SELCO SpA, Vedole-Colorno (Italy), which comprises two belt transmissions each driving the control arm of a leaf of the door of an elevator of a circular cabin.
  • the two transmissions are arranged in the same vertical plane which is parallel to the chord of the door opening arc.
  • Each belt is connected to a socket which slides along the corresponding arm during the pivoting thereof, so that the lever arm of the socket relative to the pivot center of the control arm is variable.
  • the angular and linear speed of movement of each leaf is variable, and above all that this speed is maximum when the leaves reach or leave the closed position.
  • Another disadvantage is that this mechanism does not allow a wide opening angle of the door.
  • this angle is limited to about 80 °; Therefore, in a circular elevator car, which is generally a small car, the width of the door opening is significantly smaller than the interior width of the car. In certain cases, this may prevent disabled people in wheelchairs from accessing this lift. On the other hand, the vertical arrangement of belt transmissions is cumbersome and may require an elevation of the top of the elevator shaft.
  • the object of the present invention is to remedy the drawbacks mentioned above, by providing a space-saving mechanism capable of driving the two leaves of the door in synchronism and at an approximately constant speed when the motor is operating at a constant speed, and this over an angle which can be greater than with the mechanism according to the prior art.
  • the invention relates to a control mechanism of the kind indicated in the preamble, characterized in that each control arm is associated with a secondary transmission having a flexible traction member which passes over two wheels with vertical axes and which is connected by an articulation at a determined point on the arm, a first of said wheels being driven by the motor by means of a primary transmission.
  • connection point between each control arm and the flexible traction member is fixed on the arm, it is moved at a circumferential speed which corresponds to the speed linear of the flexible traction member. Its speed is therefore substantially constant for all leaf positions when the mechanism is actuated at a constant speed.
  • this flexible member is carried by wheels situated in a horizontal plane, it can undergo deviations in the horizontal plane to follow the trajectory in an arc of a circle of the connection point. All the transmissions and arms of the mechanism can be grouped in a small height.
  • the flexible traction member of the secondary transmission contains an elasticity compensating element allowing it to lengthen to follow the trajectory in an arc of a circle of the connection point of the arm.
  • the compensating element comprises two parts arranged to slide one over the other and a compression spring interposed between said parts.
  • One of said parts can be connected to the arm by said articulation.
  • the flexible traction member of the secondary transmission is associated with a guide in an arc of a circle in order to follow the trajectory in an arc of a circle of the connection point of the arm.
  • the mechanism comprises two secondary transmissions driven in synchronism by the same primary transmission.
  • the primary transmission contains a transmission member with friction torque limitation, which is connected to said first wheel of each secondary transmission by a positive transmission.
  • Said positive transmission can be chain or toothed belt and include an overvoltage detector which is coupled to a motor control device.
  • said mechanism is preferably placed on a ceiling of the cabin and is covered by a platform. This construction is possible thanks to the small vertical size of the mechanism, all the wheels of which can be arranged horizontally.
  • FIG. 1 is a schematic plan view of a control mechanism according to the invention for a door with two leaves of a circular elevator car
  • FIG. 2 schematically represents the mechanism in vertical section along the broken line 11-11 of FIG. 1, and
  • Figure 3 is a diagram showing a large door opening width which can be obtained with a control mechanism according to the invention.
  • an elevator comprises a circular cage 1, for example made of sheet metal, having at each landing an opening of width B between two uprights 2. This opening is normally closed by a landing door with central opening, formed of two arched leaves 3 carried by rails in an arc (not shown) fixed to the cage 1.
  • the cage 1 vertically guides a 4 * cabin having, in plan, a shape at least partially circular, centered in C.
  • the cabin has an opening of width B, provided with a door with two arcuate leaves 5 which are supported by rails (not shown) along the outside wall of the cabin.
  • the leaves 3 and 5 are shown in solid lines in their open position and in broken lines in their closed position, bearing the references 3 'and 5'.
  • the leaves 5 of the cabin door when they open or close, carry with them the leaves 3 of the landing door located opposite them, by means of protruding elements 6 which engage vertically in fork elements 7 of leaves 3 by the vertical displacement of the cabin.
  • the mechanism For each leaf 5, the mechanism includes a control arm 13, the rear end of which is mounted on the base plate 11 in a pivoting manner relative to a vertical axis 14 passing through the center C of the cabin.
  • the front end of each arm 13 is coupled to the corresponding leaf 5 by an articulated connection 15 and is supported on the plate 11 by means of a roller 16.
  • the two arms 13 are driven in synchronism by a reversible electric motor 17, by means of a primary transmission comprising a first reducing stage 18 and a second distributor stage 19, and two secondary transmissions 20 which are each associated with one of the arms 13.
  • the two secondary transmissions 20 are arranged in the same horizontal plane, on either side of the median vertical plane 12.
  • each of them is a chain or toothed belt transmission 21 passing over two corresponding wheels 22 and 23 with vertical axes.
  • a compensating element 24 comprising a rigid jumper 25 which straddles the corresponding arm 13, to which it is connected by an articulation with a vertical axis 26.
  • One end of the chain or belt 21 is fixed to the jumper 25 ( on the left in the case of FIG. 2) and the other is fixed to a slide 27 mounted in the jumper 25 and biased by a compression spring 28 ensuring permanent tension of the chain or belt 21.
  • FIG. 1 has designated by P and Q respectively the points of the arms 13 on the left and right. where the corresponding secondary transmission 20 is connected.
  • the points P and Q describe arcuate paths; 30 and 31 respectively, which the compensating element 24 of each secondary transmission can follow thanks to a slight elongation of the belt or chain 21 by compression of the spring 28.
  • the first stage 18 of the primary transmission can be of any reduction type, for example with a V-belt, with a large diameter reduction plate 32 which coaxially drives, by means of a friction torque limiter 33, a driving pinion 34 of the second stage 19.
  • This stage is formed by a positive transmission, for example with chain 35, passing over a first pinion 36, a second pinion 37 and a return pinion 38 which is adjustable to adjust the chain tension .
  • Each pinion 36, 37 is superimposed and fixed to the first wheel 22 of the corresponding secondary transmission.
  • the first pinion 36 has a diameter slightly greater than that of the second pinion 37, in a proportion equal to the ratio between the lengths of the paths 31 and
  • the means for controlling the opening and closing of the elevator doors are of known types.
  • the stopping of the leaves 5 in the open and closed positions is controlled by limit switches which can be mechanical or preferably magnetic.
  • the control system is supplemented by the usual safety devices necessary for safe operation of the doors, in addition to the torque limiter 33 and the electromechanical tensioner 39, in particular by a motor runtime limiter 17, a sensitive edge of the floor of the cabin and possibly sensitive edges on the door leaves.
  • each control arm 13 benefits from its own secondary transmission 20 arranged in a horizontal plane allows a deflection angle of the arm, therefore of opening of the door, significantly greater than with the mechanism of the prior art described. upper. As shown in Figure 3, the opening angle of each leaf from the median vertical plane 12 can easily reach
  • the present invention is not limited to the embodiment described above, but can undergo different modifications and come in various variants obvious to those skilled in the art.
  • the scope of the invention is not limited to. lifts, because circular doors with central opening of the same kind can be used advantageously for entrances to different buildings or premises, or even in public transport vehicles, where one can take advantage of their small size, their large width and their operation at a regular speed.

Abstract

A mechanism for driving the two halves (5) of a centrally-opening door at a substantially constant speed along an arc of a circle, where the door aperture is wide and said mechanism takes up limited vertical space, particularly in lift, building or vehicle doors. Each half (5) of the door is connected to a pivot arm (13) linked at one point (P, Q) to a secondary drive (20) using a chain or a synchronous belt (21) which is slightly elongatable by means of a resilient compensating element (24). Both secondary drives (20) are driven by a motor (17) via a common primary drive including two stages (18 and 19) separated by a frictional torque limiter (33).

Description

MECANISME DE COMMANDE D'UNE PORTE A DEUX VANTAUX COULISSANT LE LONG D'UN ARC DE CERCLE, ET ASCENSEUR COMPORTANT UN TEL MECANISMECONTROL MECHANISM OF A DOUBLE-LEAF DOOR SLIDING ALONG A CIRCLE OF CIRCLE, AND ELEVATOR COMPRISING SUCH A MECHANISM
La présente invention concerne un mécanisme de commande d'une porte à deux vantaux à ouverture centrale par coulissement des vantaux dans des sens opposés le long d'un arc de cercle horizontal, comportant deux bras de commande pivotants qui coopèrent chacun avec un vantail pour l'entraîner et qui sont montés sur une articulation à axe vertical à proximité du centre de l'arc de cercle, un moteur, et des moyens de transmission reliant le moteur aux bras de commande par au moins un organe souple de traction.The present invention relates to a mechanism for controlling a door with two leaves with central opening by sliding the leaves in opposite directions along a horizontal arc, comprising two pivoting control arms which each cooperate with a leaf for the 'drive and which are mounted on a vertical axis joint near the center of the arc, a motor, and transmission means connecting the motor to the control arms by at least one flexible traction member.
L'invention s'applique en particulier, mais pas exclusivement, à la commande des portes des cabines d'ascenseur. C'est pourquoi l'invention concerne également un ascenseur comportant une cabine pourvue d'une porte à deux vantaux à ouverture centrale par coulissement des vantaux dans des sens opposés le long d'un arc de cercle horizontal, la porte de la cabine étant pourvue d'un mécanisme de commande du genre indiqué ci-dessus.The invention applies in particular, but not exclusively, to the control of the doors of elevator cars. This is why the invention also relates to an elevator comprising a cabin provided with a door with two leaves having a central opening by sliding the leaves in opposite directions along a horizontal arc, the cabin door being provided a control mechanism of the kind indicated above.
On connaît un mécanisme de ce genre, commercialisé par la société SELCO SpA, Vedole-Colorno (Italie) , qui comporte deux transmissions à courroies entraînant chacune le bras de commande d'un vantail de la porte d'un ascenseur à cabine circulaire. Les deux transmissions sont disposées dans un même plan vertical qui est parallèle à la corde de l'arc d'ouverture de la porte. Chaque courroie est connectée à une douille qui glisse le long du bras correspondant au cours du pivotement de celui-ci, de sorte que le bras de levier de la douille par rapport au centre de pivotement du bras de commande est variable. Il en résulte que la vitesse angulaire et linéaire de déplacement de chaque vantail est variable, et surtout que cette vitesse est maximale quand les vantaux atteignent ou quittent la position fermée. Un autre inconvénient est que ce mécanisme ne permet pas un grand angle d'ouverture de la porte. En pratique, cet angle est limité à environ 80° ; De ce fait , dans une cabine d'ascenseur circulaire, qui est généralement une cabine de petite taille, la largeur de l'ouverture de la porte est nettement plus petite que la largeur intérieure de la cabine. Dans certains cas , ceci peut empêcher l'accès de cet ascenseur à des personnes handicapées circulant en fauteuil roulant. D'autre part la disposition verticale des transmissions à courroies est encombrante et peut nécessiter une surélévation du sommet de la cage de l'ascenseur.A mechanism of this type is known, marketed by the company SELCO SpA, Vedole-Colorno (Italy), which comprises two belt transmissions each driving the control arm of a leaf of the door of an elevator of a circular cabin. The two transmissions are arranged in the same vertical plane which is parallel to the chord of the door opening arc. Each belt is connected to a socket which slides along the corresponding arm during the pivoting thereof, so that the lever arm of the socket relative to the pivot center of the control arm is variable. As a result, the angular and linear speed of movement of each leaf is variable, and above all that this speed is maximum when the leaves reach or leave the closed position. Another disadvantage is that this mechanism does not allow a wide opening angle of the door. In practice, this angle is limited to about 80 °; Therefore, in a circular elevator car, which is generally a small car, the width of the door opening is significantly smaller than the interior width of the car. In certain cases, this may prevent disabled people in wheelchairs from accessing this lift. On the other hand, the vertical arrangement of belt transmissions is cumbersome and may require an elevation of the top of the elevator shaft.
La publication Patent Abstracts of Japan, Vol. 2 No 83 (M-78) montre un mécanisme de commande de portes de ce genre où chaque vantail est entraîné au moyen de plusieurs leviers articulés les uns aux autres et disposés dans un plan vertical du côté extérieur de la porte, à partir d' une roue de poulie commune disposée verticalement au-dessous du plafond d'une cabine cylindrique d'ascenseur. Ce système présente des inconvénients analogues à ceux du mécanisme décrit plus haut .The publication Patent Abstracts of Japan, Vol. 2 No 83 (M-78) shows a door control mechanism of this kind where each leaf is driven by means of several levers articulated to each other and arranged in a vertical plane on the outside of the door, from a common pulley wheel arranged vertically below the ceiling of a cylindrical elevator car. This system has drawbacks similar to those of the mechanism described above.
La présente invention a pour but de remédier aux inconvénients mentionnés ci-dessus , en fournissant un mécanisme peu encombrant et capable d'entraîner les deux vantaux de la porte en synchronisme et à une vitesse approximativement constante quand le moteur fonctionne à une vitesse constante, et ceci sur un angle pouvant être plus grand qu'avec le mécanisme selon l'art antérieur.The object of the present invention is to remedy the drawbacks mentioned above, by providing a space-saving mechanism capable of driving the two leaves of the door in synchronism and at an approximately constant speed when the motor is operating at a constant speed, and this over an angle which can be greater than with the mechanism according to the prior art.
Dans ce but, l'invention concerne un mécanisme de commande du genre indiqué en préambule, caractérisé en ce que chaque bras de commande est associé à une transmission secondaire ayant un organe souple de traction qui passe sur deux roues à axes verticaux et qui est connecté par une articulation à un point déterminé du bras, une première desdites roues étant entraînée par le moteur au moyen d'une transmission primaire.For this purpose, the invention relates to a control mechanism of the kind indicated in the preamble, characterized in that each control arm is associated with a secondary transmission having a flexible traction member which passes over two wheels with vertical axes and which is connected by an articulation at a determined point on the arm, a first of said wheels being driven by the motor by means of a primary transmission.
De cette façon, comme le point de connexion entre chaque bras de commande et l'organe souple de traction est fixe sur le bras , il est déplacé à une vitesse circonférentielle qui correspond à la vitesse linéaire de l'organe souple de traction. Sa vitesse est donc sensiblement constante pour toutes les positions du vantail quand le mécanisme est actionné à une vitesse constante. En outre , comme cet organe souple est porté par des roues situées dans un plan horizontal, il peut subir des déviations dans le plan horizontal pour suivre la trajectoire en arc de cercle du point de connexion. L'ensemble des transmissions et des bras du mécanisme peut être groupé dans une faible hauteur.In this way, as the connection point between each control arm and the flexible traction member is fixed on the arm, it is moved at a circumferential speed which corresponds to the speed linear of the flexible traction member. Its speed is therefore substantially constant for all leaf positions when the mechanism is actuated at a constant speed. In addition, as this flexible member is carried by wheels situated in a horizontal plane, it can undergo deviations in the horizontal plane to follow the trajectory in an arc of a circle of the connection point. All the transmissions and arms of the mechanism can be grouped in a small height.
Dans une forme de réalisation préférée, l'organe souple de traction de la transmission secondaire contient un élément compensateur à élasticité lui permettant de s'allonger pour suivre la trajectoire en arc de cercle du point de connexion du bras . De préférence, l'élément compensateur comporte deux pièces agencées pour coulisser l' une sur l'autre et un ressort de compression interposé entre lesdites pièces .In a preferred embodiment, the flexible traction member of the secondary transmission contains an elasticity compensating element allowing it to lengthen to follow the trajectory in an arc of a circle of the connection point of the arm. Preferably, the compensating element comprises two parts arranged to slide one over the other and a compression spring interposed between said parts.
L'une desdites pièces peut être connectée au bras par ladite articulation.One of said parts can be connected to the arm by said articulation.
Dans une autre forme de réalisation, il peut être prévu que l'organe souple de traction de la transmission secondaire est associé à un guide en arc de cercle pour suivre la trajectoire en arc de cercle du point de connexion du bras .In another embodiment, it can be provided that the flexible traction member of the secondary transmission is associated with a guide in an arc of a circle in order to follow the trajectory in an arc of a circle of the connection point of the arm.
Dans une forme spécialement avantageuse de l'invention, le mécanisme comporte deux transmissions secondaires entraînées en synchronisme par la même transmission primaire.In a particularly advantageous form of the invention, the mechanism comprises two secondary transmissions driven in synchronism by the same primary transmission.
De préférence, la transmission primaire contient un organe de transmission à limitation de couple par friction, lequel est relié à ladite première roue de chaque transmission secondaire par une transmission positive. Ladite transmission positive peut être à chaîne ou à courroie crantée et comporter un détecteur de surtension qui est couplé à un dispositif de commande du moteur.Preferably, the primary transmission contains a transmission member with friction torque limitation, which is connected to said first wheel of each secondary transmission by a positive transmission. Said positive transmission can be chain or toothed belt and include an overvoltage detector which is coupled to a motor control device.
Dans une forme particulièrement avantageuse d' un ascenseur où la porte de la cabine est pourvue d'un tel mécanisme de commande, ledit mécanisme est placé de préférence sur un plafond de la cabine et est recouvert par une plate-forme. Cette construction est possible grâce au faible encombrement vertical du mécanisme, dont toutes les roues peuvent être disposées horizontalement .In a particularly advantageous form of an elevator where the car door is provided with such a control mechanism, said mechanism is preferably placed on a ceiling of the cabin and is covered by a platform. This construction is possible thanks to the small vertical size of the mechanism, all the wheels of which can be arranged horizontally.
D'autres caractéristiques et avantages de la présente invention apparaîtront dans la description suivante d'une forme de réalisation préférée, présentée à titre d'exemple non limitatif et en référence aux dessins annexés dans lesquels :Other characteristics and advantages of the present invention will appear in the following description of a preferred embodiment, presented by way of nonlimiting example and with reference to the appended drawings in which:
la figure 1 est une vue schématique en plan d' un mécanisme de commande selon l'invention pour une porte à deux vantaux d' une cabine d'ascenseur circulaire,FIG. 1 is a schematic plan view of a control mechanism according to the invention for a door with two leaves of a circular elevator car,
la figure 2 représente schématiquement le mécanisme en coupe verticale suivant la ligne brisée 11-11 de la figure 1 , etFIG. 2 schematically represents the mechanism in vertical section along the broken line 11-11 of FIG. 1, and
la figure 3 est un schéma montrant une grande largeur d'ouverture de porte qui peut être obtenue avec un mécanisme de commande selon l'invention .Figure 3 is a diagram showing a large door opening width which can be obtained with a control mechanism according to the invention.
Dans l' exemple représenté dans les dessins , un ascenseur comporte une cage circulaire 1 , par exemple en tôle, présentant à chaque palier une ouverture de largeur B entre deux montants 2. Cette ouverture est normalement obturée par une porte palière à ouverture centrale, formée de deux vantaux arqués 3 portés par des rails en arc de cercle (non représentés) fixés à la cage 1. La cage 1 guide verticalement une cabine 4* ayant, en plan, une forme au moins en partie circulaire, centrée en C. En face des portes palières , la cabine comporte une ouverture de largeur B , pourvue d'une porte à deux vantaux arqués 5 qui sont supportés par des rails (non représentés) le long de la paroi extérieure de la cabine. Dans la figure 1 , les vantaux 3 et 5 sont représentés en traits continus dans leur position ouverte et en traits interrompus dans leur position fermée, portant les références 3' et 5' . De manière connue, les vantaux 5 de la porte de la cabine, quand ils s'ouvrent ou se ferment, entraînent avec eux les vantaux 3 de la porte palière située en face d'eux , au moyen d'éléments protubérants 6 qui s'engagent verticalement dans des éléments en fourche 7 des vantaux 3 par le déplacement vertical de la cabine.In the example shown in the drawings, an elevator comprises a circular cage 1, for example made of sheet metal, having at each landing an opening of width B between two uprights 2. This opening is normally closed by a landing door with central opening, formed of two arched leaves 3 carried by rails in an arc (not shown) fixed to the cage 1. The cage 1 vertically guides a 4 * cabin having, in plan, a shape at least partially circular, centered in C. In opposite the landing doors, the cabin has an opening of width B, provided with a door with two arcuate leaves 5 which are supported by rails (not shown) along the outside wall of the cabin. In Figure 1, the leaves 3 and 5 are shown in solid lines in their open position and in broken lines in their closed position, bearing the references 3 'and 5'. In known manner, the leaves 5 of the cabin door, when they open or close, carry with them the leaves 3 of the landing door located opposite them, by means of protruding elements 6 which engage vertically in fork elements 7 of leaves 3 by the vertical displacement of the cabin.
Dans la figure 1 , on voit le plafond 8 de la cabine, sur lequel est monté le mécanisme 10 de commande des portes , et en particulier une plaque de base 11 supportant les principaux éléments du mécanisme. Ce mécanisme est en grande partie symétrique par rapport au plan vertical radial 12 passant par le milieu de l'ouverture de la porte, de sorte que l'on a donné les mêmes numéros de référence aux éléments disposés symétriquement par rapport à ce plan.In Figure 1, we see the ceiling 8 of the cabin, on which is mounted the mechanism 10 for controlling the doors, and in particular a base plate 11 supporting the main elements of the mechanism. This mechanism is largely symmetrical about the vertical vertical plane 12 passing through the middle of the door opening, so that the same reference numbers have been given to the elements arranged symmetrically with respect to this plane.
Pour chaque vantail 5, le mécanisme comporte un bras de commande 13 dont l'extrémité arrière est montée sur la plaque de base 11 de manière pivotante par rapport à un axe vertical 14 passant par le centre C de la cabine. L'extrémité avant de chaque bras 13 est couplée au vantail correspondant 5 par un raccordement articulé 15 et s'appuie sur la plaque 11 au moyen d'une roulette 16. Pour ouvrir et fermer les portes , les deux bras 13 sont entraînés en synchronisme par un moteur électrique réversible 17, au moyen d'une transmission primaire comprenant un premier étage réducteur 18 et un second étage distributeur 19, et de deux transmissions secondaires 20 qui sont chacune associées à l' un des bras 13. Les deux transmissions secondaires 20 sont disposées dans un même plan horizontal, de part et d'autre du plan vertical médian 12. Chacune d'elles est une transmission à chaîne ou courroie crantée 21 passant sur deux roues correspondantes 22 et 23 à axes verticaux. Dans la chaîne ou courroie 21 est interposé un élément compensateur 24 comprenant un cavalier rigide 25 qui chevauche le bras 13 correspondant, auquel il est connecté par une articulation à axe vertical 26. Une extrémité de la chaîne ou courroie 21 est fixée au cavalier 25 (à gauche dans le cas de la figure 2) et l'autre est fixée à un coulisseau 27 monté dans le cavalier 25 et sollicité par un ressort de compression 28 assurant une tension permanente de la chaîne ou courroie 21. Dans la figure 1 , on a désigné respectivement par P et Q les points des bras 13 de gauche et de droite . où est connectée la transmission secondaire correspondante 20. Au cours du déplacement des vantaux de porte 5, les points P et Q décrivent des trajectoires arquées ; respectivement 30 et 31 , que l'élément compensateur 24 de chaque transmission secondaire peut suivre grâce à un léger allongement de la courroie ou chaîne 21 par compression du ressort 28.For each leaf 5, the mechanism includes a control arm 13, the rear end of which is mounted on the base plate 11 in a pivoting manner relative to a vertical axis 14 passing through the center C of the cabin. The front end of each arm 13 is coupled to the corresponding leaf 5 by an articulated connection 15 and is supported on the plate 11 by means of a roller 16. To open and close the doors, the two arms 13 are driven in synchronism by a reversible electric motor 17, by means of a primary transmission comprising a first reducing stage 18 and a second distributor stage 19, and two secondary transmissions 20 which are each associated with one of the arms 13. The two secondary transmissions 20 are arranged in the same horizontal plane, on either side of the median vertical plane 12. Each of them is a chain or toothed belt transmission 21 passing over two corresponding wheels 22 and 23 with vertical axes. In the chain or belt 21 is interposed a compensating element 24 comprising a rigid jumper 25 which straddles the corresponding arm 13, to which it is connected by an articulation with a vertical axis 26. One end of the chain or belt 21 is fixed to the jumper 25 ( on the left in the case of FIG. 2) and the other is fixed to a slide 27 mounted in the jumper 25 and biased by a compression spring 28 ensuring permanent tension of the chain or belt 21. In FIG. 1, has designated by P and Q respectively the points of the arms 13 on the left and right. where the corresponding secondary transmission 20 is connected. During the movement of the door leaves 5, the points P and Q describe arcuate paths; 30 and 31 respectively, which the compensating element 24 of each secondary transmission can follow thanks to a slight elongation of the belt or chain 21 by compression of the spring 28.
Le premier étage 18 de la transmission primaire peut être d'un type réducteur quelconque, par exemple à courroie trapézoïdale, avec un plateau réducteur de grand diamètre 32 qui entraîne coaxialement , par l'entremise d' un limiteur de couple à friction 33, un pignon entraîneur 34 du second étage 19. Cet étage est formé par une transmission positive, par exemple à chaîne 35, passant sur un premier pignon 36 , un second pignon 37 et un pignon de renvoi 38 qui est ajustable pour régler la tension de la chaîne. Chaque pignon 36, 37 est superposé et fixé à la première roue 22 de la transmission secondaire correspondante. Dans l'exemple représenté ici, où les distances de P et Q à C ne sont pas égales , le premier pignon 36 a un diamètre légèrement supérieur à celui du second pignon 37 , dans une proportion égale au rapport entre les longueurs des trajectoires 31 etThe first stage 18 of the primary transmission can be of any reduction type, for example with a V-belt, with a large diameter reduction plate 32 which coaxially drives, by means of a friction torque limiter 33, a driving pinion 34 of the second stage 19. This stage is formed by a positive transmission, for example with chain 35, passing over a first pinion 36, a second pinion 37 and a return pinion 38 which is adjustable to adjust the chain tension . Each pinion 36, 37 is superimposed and fixed to the first wheel 22 of the corresponding secondary transmission. In the example shown here, where the distances from P and Q to C are not equal, the first pinion 36 has a diameter slightly greater than that of the second pinion 37, in a proportion equal to the ratio between the lengths of the paths 31 and
30, afin que les vitesses angulaires des deux bras 13 soient parfaitement égales dans des sens opposés . Le sens de circulation de la chaîne 35 est indiqué par la flèche F pour la fermeture et par la flèche O pour l'ouverture de la porte. Cette chaîne 35 passe en outre sur un tendeur électromécanique 39 qui détecte toute tension excessive au-delà d'un seuil de sécurité et qui, le cas échéant, délivre un signal correspondant aux organes de commande du moteur 17. L'ensemble du mécanisme 10 tient dans une faible hauteur H (par exemple 160 mm) au-dessus du plafond de la cabine, ce qui permet de le recouvrir d' une plate-forme de travail 40 offrant une grande surface plane au personnel effectuant l'entretien de l'ascenseur. Dans la figure 1 , cette plate-forme est supprimée afin de clarifier le dessin.30, so that the angular velocities of the two arms 13 are perfectly equal in opposite directions. The direction of movement of the chain 35 is indicated by the arrow F for closing and by the arrow O for the opening of the door. This chain 35 also passes over an electromechanical tensioner 39 which detects any excessive tension beyond a safety threshold and which, if necessary, delivers a signal corresponding to the engine control members 17. The whole mechanism 10 fits in a low height H (for example 160 mm) above the ceiling of the cabin, which makes it possible to cover it with a work platform 40 offering a large flat surface to the personnel carrying out maintenance of the elevator. In Figure 1, this platform is removed to clarify the drawing.
Pour le reste, les moyens de commande d'ouverture et de fermeture des portes de l'ascenseur sont de types connus. L'arrêt des vantaux 5 dans les positions d'ouverture et de fermeture est commandé par des contacts de fin de course qui peuvent être mécaniques ou de préférence magnétiques . Le système de commande est complété par les sécurités habituelles nécessaires à un fonctionnement sans danger des portes , en plus du limiteur de couple 33 et du tendeur électromécanique 39, notamment par un limiteur de durée de fonctionnement du moteur 17, un bord sensible du plancher de la cabine et éventuellement des bords sensibles sur les vantaux des portes .For the rest, the means for controlling the opening and closing of the elevator doors are of known types. The stopping of the leaves 5 in the open and closed positions is controlled by limit switches which can be mechanical or preferably magnetic. The control system is supplemented by the usual safety devices necessary for safe operation of the doors, in addition to the torque limiter 33 and the electromechanical tensioner 39, in particular by a motor runtime limiter 17, a sensitive edge of the floor of the cabin and possibly sensitive edges on the door leaves.
Le fait que chaque bras de commande 13 bénéficie de sa propre transmission secondaire 20 disposée dans un plan horizontal autorise un angle de débattement du bras, donc d'ouverture de la porte, notablement plus grand qu'avec le mécanisme de l'art antérieur décrit plus haut. Comme le montre la figure 3, l'angle d'ouverture de chaque vantail à partir du plan vertical médian 12 peut atteindre facilementThe fact that each control arm 13 benefits from its own secondary transmission 20 arranged in a horizontal plane allows a deflection angle of the arm, therefore of opening of the door, significantly greater than with the mechanism of the prior art described. upper. As shown in Figure 3, the opening angle of each leaf from the median vertical plane 12 can easily reach
60° , si bien que la largeur B d'ouverture de la porte peut dépasser le 85% du diamètre D du cercle suivi par les vantaux 5. Néanmoins , ceux-ci ont un faible encombrement latéral dans la position ouverte, comme le montre la figure 3.60 °, so that the width B of the door opening can exceed 85% of the diameter D of the circle followed by the leaves 5. Nevertheless, these have a small lateral space requirement in the open position, as shown in the figure 3.
D'autres avantages du mécanisme selon l'invention ressortent clairement de la description ci-dessus. La vitesse des vantaux est régulière, adaptable à toute situation, avec un ralentissement en fin de course par un frein couplé au moteur. Le fonctionnement est silencieux. La position des points de connexion P et Q à proximité de l'extrémité des bras 13 permet un arrêt précis en fin de course. Les frottements mécaniques sont suffisants pour maintenir les vantaux à l'arrêt, mais les rapports de transmission des étages 19 et 20 en aval du limitateur à friction 33 permettent une ouverture manuelle des portes sans effet excessif et sans intervention extérieure.Other advantages of the mechanism according to the invention appear clearly from the description above. The speed of the leaves is regular, adaptable to any situation, with a slowdown at the end of the race by a brake coupled to the motor. Operation is silent. The position of the connection points P and Q near the end of the arms 13 allows precise stop at the end of the stroke. The mechanical friction is sufficient to keep the leaves stationary, but the transmission ratios of the stages 19 and 20 downstream of the friction limiter 33 allow manual opening of the doors without excessive effect and without external intervention.
La présente invention n'est pas limitée à l'exemple de réalisation décrit ci-dessus, mais peut subir différentes modifications et se présenter sous diverses variantes évidentes pour l'homme de l'art. En parti- culier, on pourrait prévoir une seule transmission secondaire pour les deux bras 13, ayant un tracé approximativement semblable à ceux des deux chaînes ou courroies . En outre, le domaine d'application de l'invention n'est pas limité aux . ascenseurs, car des portes circulaires à ouverture centrale du même genre peuvent être utilisées avantageusement pour des entrées de différents bâtiments ou locaux , ou encore .dans des véhicules de transport public , où l'on peut mettre à profit leur faible encombrement, leur grande largeur d'ouverture et leur fonctionnement à une vitesse régulière. The present invention is not limited to the embodiment described above, but can undergo different modifications and come in various variants obvious to those skilled in the art. In particular, one could provide a single secondary transmission for the two arms 13, having a layout approximately similar to those of the two chains or belts. Furthermore, the scope of the invention is not limited to. lifts, because circular doors with central opening of the same kind can be used advantageously for entrances to different buildings or premises, or even in public transport vehicles, where one can take advantage of their small size, their large width and their operation at a regular speed.

Claims

REVENDICATIONS
1. Mécanisme de commande d'une porte à deux vantaux à ouverture centrale par coulissement des vantaux dans des sens opposés le long d' un arc de cercle horizontal, comportant deux bras de commande pivotants (13) , qui coopèrent chacun avec un vantail (5) pour l'entraîner et qui sont montés sur une articulation à axe vertical à proximité du centre (C) de l'arc de cercle, un moteur (17) , et des moyens de transmission reliant le moteur aux bras de commande par au moins un organe souple de traction, caractérisé en ce que chaque bras de commande (13) est associé à une transmission secondaire (20) ayant un organe souple de traction (21 ) qui passe sur deux roues (22, 23) à axes verticaux et qui est connecté par une articulation à un point déterminé (P , Q) du bras , une première des dites roues étant entraînée par le moteur au moyen d'une transmission primaire ( 18 et1. Control mechanism for a door with two leaves with central opening by sliding the leaves in opposite directions along a horizontal arc, comprising two pivoting control arms (13), which each cooperate with one leaf ( 5) to drive it and which are mounted on a joint with a vertical axis near the center (C) of the circular arc, a motor (17), and transmission means connecting the motor to the control arms by at at least one flexible traction member, characterized in that each control arm (13) is associated with a secondary transmission (20) having a flexible traction member (21) which passes over two wheels (22, 23) with vertical axes and which is connected by an articulation at a determined point (P, Q) of the arm, a first of said wheels being driven by the motor by means of a primary transmission (18 and
19) .19).
2. Mécanisme selon la revendication 1 , caractérisé en ce que l'organe souple de traction (21) de la transmission secondaire contient un élément compensateur à élasticité (24) lui permettant de s'allonger pour suivre la trajectoire en arc de cercle (30, 31) du point de connexion (P, Q) du bras .2. Mechanism according to claim 1, characterized in that the flexible traction member (21) of the secondary transmission contains an elasticity compensating element (24) allowing it to lengthen to follow the trajectory in an arc of a circle (30 , 31) from the connection point (P, Q) of the arm.
3. Mécanisme selon la revendication 2, caractérisé en ce que l'élément compensateur (24) comporte deux pièces (25, 27) agencées pour coulisser Tune sur l'autre et un ressort de compression (28) interposé entre lesdites pièces.3. Mechanism according to claim 2, characterized in that the compensating element (24) comprises two parts (25, 27) arranged to slide one on the other and a compression spring (28) interposed between said parts.
4. Mécanisme selon la revendication 3, caractérisé en ce que l'une (25) desdites pièces est connectée au bras (13) par ladite articulation (26) .4. Mechanism according to claim 3, characterized in that one (25) of said parts is connected to the arm (13) by said articulation (26).
5. Mécanisme selon la revendication 1 , caractérisé en ce que l'organe souple de traction de la transmission secondaire est associé à un guide en arc de cercle pour suivre la trajectoire en arc de cercle (30, 31) du point de connexion (P,Q) du bras . 5. Mechanism according to claim 1, characterized in that the flexible traction member of the secondary transmission is associated with a guide in an arc of a circle to follow the trajectory in an arc of a circle (30, 31) of the connection point (P , Q) of the arm.
6. Mécanisme selon l' une des revendications précédentes , caractérisé en ce qu'il comporte deux transmissions secondaires (20) entraînées en synchronisme par la même transmission primaire (18 et 19) .6. Mechanism according to one of the preceding claims, characterized in that it comprises two secondary transmissions (20) driven in synchronism by the same primary transmission (18 and 19).
7- Mécanisme selon l'une des revendications précédentes , caractérisé en ce que la transmission primaire contient un organe de transmission à limitation de couple par friction (33) , lequel est relié à ladite première roue (22) de chaque transmission secondaire (20) par une transmission positive ( 19) .7- Mechanism according to one of the preceding claims, characterized in that the primary transmission contains a transmission member with friction torque limitation (33), which is connected to said first wheel (22) of each secondary transmission (20) by a positive transmission (19).
8. Mécanisme selon la revendication 7, caractérisé en ce que ladite transmission positive ( 19) est à chaîne (35) ou à courroie crantée et comporte un détecteur de surtension (39) qui est couplé à un dispositif de commande du moteur (17) .8. Mechanism according to claim 7, characterized in that said positive transmission (19) is chain (35) or toothed belt and comprises an overvoltage detector (39) which is coupled to a motor control device (17) .
9. Ascenseur comportant une cabine (4) pourvue d' une porte à deux vantaux (5) à ouverture centrale par coulissement des vantaux dans des sens opposés le long d'un arc de cercle horizontal, la porte de la cabine étant pourvue d'un mécanisme de commande (10) selon la revendication 1.9. Elevator comprising a cabin (4) provided with a door with two leaves (5) with central opening by sliding the leaves in opposite directions along a horizontal arc, the cabin door being provided with a control mechanism (10) according to claim 1.
10. Ascenseur selon la revendication 9, caractérisé en ce que ledit mécanisme ( 10) est placé sur un plafond (8) de la cabine et est recouvert par une plate-forme (40) . 10. Elevator according to claim 9, characterized in that said mechanism (10) is placed on a ceiling (8) of the cabin and is covered by a platform (40).
PCT/CH1993/000265 1992-11-23 1993-11-23 Mechanism for controlling a double door sliding along an arc of a circle, and lift provided therewith WO1994012751A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE69302264T DE69302264T2 (en) 1992-11-23 1993-11-23 DRIVE MECHANISM FOR A DOOR WITH TWO, ALONG A CIRCULAR ARC, SLIDING WINGS AND AN ELEVATOR CONTAINING SUCH A MECHANISM
EP93924493A EP0625238B1 (en) 1992-11-23 1993-11-23 Mechanism for controlling a double door sliding along an arc of a circle, and lift provided therewith

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR92/14221 1992-11-23
FR9214221A FR2698402B1 (en) 1992-11-23 1992-11-23 Control mechanism for a door with two leaves sliding along an arc of a circle, and elevator comprising such a mechanism.

Publications (1)

Publication Number Publication Date
WO1994012751A1 true WO1994012751A1 (en) 1994-06-09

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PCT/CH1993/000265 WO1994012751A1 (en) 1992-11-23 1993-11-23 Mechanism for controlling a double door sliding along an arc of a circle, and lift provided therewith

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AT (1) ATE136983T1 (en)
DE (1) DE69302264T2 (en)
FR (1) FR2698402B1 (en)
WO (1) WO1994012751A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0650917A2 (en) * 1993-11-01 1995-05-03 Otis Elevator Company Elevator door system
US20100251617A1 (en) * 2007-11-20 2010-10-07 Meidensha Corporation Open/close device for pit cover

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH691613A5 (en) 1997-03-18 2001-08-31 William Affolter A drive to move in the opposite direction or contra.
CN106081826B (en) * 2016-08-03 2018-06-12 陕西小溪机电科技有限公司 A kind of elevator door
CN111853058A (en) * 2020-06-08 2020-10-30 南京伟思医疗科技股份有限公司 Circular arc motion mechanism

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JPS5351843A (en) * 1976-10-20 1978-05-11 Fujitec Co Ltd Device for opening and closing door of cylindrical elevator cage

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JPS5351843A (en) * 1976-10-20 1978-05-11 Fujitec Co Ltd Device for opening and closing door of cylindrical elevator cage

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0650917A2 (en) * 1993-11-01 1995-05-03 Otis Elevator Company Elevator door system
EP0650917A3 (en) * 1993-11-01 1996-03-20 Otis Elevator Co Elevator door system.
US20100251617A1 (en) * 2007-11-20 2010-10-07 Meidensha Corporation Open/close device for pit cover
US8322554B2 (en) * 2007-11-20 2012-12-04 Meidensha Corporation Open/close device for pit cover

Also Published As

Publication number Publication date
FR2698402A1 (en) 1994-05-27
FR2698402B1 (en) 1995-02-24
ATE136983T1 (en) 1996-05-15
EP0625238B1 (en) 1996-04-17
DE69302264T2 (en) 1996-12-05
EP0625238A1 (en) 1994-11-23
DE69302264D1 (en) 1996-05-23

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