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(11) | EP 1 338 743 B1 |
| (12) | EUROPEAN PATENT SPECIFICATION |
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| (54) |
DEVICE FOR ACTUATING EMBEDDABLE SLIDING DOORS VORRICHTUNG ZUR BETÄTIGUNG EINBETTBARER SCHIEBETÜREN DISPOSITIF D'ACTIONNEMENT POUR PORTES COULISSANTES A EMBOITEMENT |
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| Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention). |
OBJECT OF THE INVENTION
[0001] The present invention relates to a device specifically designed to perform the initial opening maneuver and the final closing maneuver of sliding-locking doors such as those used in subway and train cars or the like, wherein their opening is initiated by a forward displacement of the door to release it from the body of the car or element in question, and continues with the sideways sliding motion.
BACKGROUND OF THE INVENTION
[0002] In closures such as those of the aforementioned examples, wherein usually two sliding and locking doors are involved that must move in a synchronized manner, one of the most commonly employed solutions due to its structural and functional simplicity is a pneumatic cylinder that acts directly on one of the doors, while the second door receives the motion of the first door through a transmission belt to achieve a synchronized motion, see for example WO 0053875 A.
[0003] More specifically, the door driven directly by the pneumatic cylinder is provided with a rack that in its longitudinal displacement turns a pinion on whose shaft is mounted a transmission belt that connects said pinion with another one coupled to the rack of the second door, so that by using identical racks and pinions the motion of one door is transmitted to the other with perfect symmetry.
[0004] In addition, due to their operational conditions vehicles of this type require a good aerodynamic penetration, a minimized noise in its displacement and a good closure of the doors as relates to tightness. To achieve these objectives the sliding-locking doors of this type have mechanisms that enable their combined motion, so that when the doors are closest to each other, that is, when they are closed, as well as in their guides for the sliding motion they can be inserted in the car body to establish a more or less tight closure and a surface continuity between the doors and the car body, thereby optimizing the aerodynamics of the latter and preventing noises made by the air upon contact with the edges of the doors.
[0005] Typically, this front or transverse motion of the guides associated to the doors is achieved by double-action pneumatic cylinders, which with the aid of suitable guides generate the required motion. However, the main problem of this solution is that the same cylinders wedge the door in its closed position, so that if there is a pressure loss in them for any reason the door will be released and free to move outwards with any interior force, such as a passenger leaning on it.
DESCRIPTION OF THE INVENTION
[0006] The actuation device for sliding-locking doors of the invention enables optimum displacement conditions both in the forward motion of the door and in its subsequent longitudinal motion. For this purpose and more specifically, according to one of the characteristics of the invention the guides for the longitudinal motion of the doors with its corresponding mechanisms, that are in turn aided by transverse guides that enable the forward motion, receive the action of a pneumatic cylinder that is hinged onto the fixed chassis with respect to which move the doors; connected to the shaft of said cylinder is a C-bar to which is in turn hinged a second bar that will act on the aforementioned longitudinal guide of the doors, so that the free end of said arched bar defines during the actuation of the pneumatic cylinder a motion that includes an approximation to the working plane of the doors, forcing the longitudinal guides of said doors to move outwards when the piston emerges from the cylinder and to move inwards when the piston retracts.
[0007] According to another characteristic of the invention the transverse guides that aid in the wedging/release of the door system, that is, in the outwards and inwards motion of the longitudinal guides on which the door sliding mechanisms are established, are mounted on four rollers which ensure a perfect guidance of said system both during the outwards motion of the longitudinal guides and during its inward motion.
DESCRIPTION OF THE DRAWINGS
[0008] As a complement of the description being made and in order to aid a better understanding of the characteristics of the invention, according to a preferred example of embodiment, the present description includes a set of drawings where for purposes of illustration only and in a non-limiting manner, the following is shown:
Figure 1 shows a profile and cross-sectional detailed view of a system of sliding doors for train cars and the like, provided with the actuation device that is the object of the present invention, the cross-section being made along one the plane of the transverse guides of the door system.
Figure 2 shows a cross-sectional detailed view similar to the previous figure, made along the plane of the cylinder that performs the wedging/releasing maneuver of the door system from the car body.
PREFERRED EMBODIMENT OF THE INVENTION
[0009] In view of these figures, and more specifically of figure 1, it can be appreciated that the device of the invention is applicable for example to doors (1) that can fit in the car body (2), establishing an external surface continuity with said body, or capable of being released and sliding outwards with the aid of transverse guides (3) that, in accordance with one of the characteristics of the invention, travel each on four casters (4), thereby providing an optimum stability to the guides (3), which are connected to the longitudinal guides (5) on which takes place the longitudinal displacement of the doors (1), that will result in their opening when said longitudinal guides (5) have emerged sufficiently from the body (2) of the car; this longitudinal actuation is performed for example by a pneumatic cylinder (6) acting directly by means of a bar (7) on one of the doors (1), and acting indirectly on the other door through a belt (8) that is attached to the same arm (7) with the aid of a clip (9) and is attached on its other end to the other door (1) with the aid of a second clip (10), so that said transmission belt (8) determines a synchronized and opposite motion of one of the doors with respect to the other, specifically with respect to the one actuated on directly by the cylinder (6).
[0010] The wedging/releasing operation of the guides (5) is achieved by the corresponding pneumatic cylinder (11), as shown in figure 2, being connected on the free end of its shaft to a C-bar (12) with an approximately semi-circular shape, that on its free end (13) is hinged to a second bar (14) that will act on the guides (5) to retract them or push them outwards, according to the two positions shown in a solid and broken line in figure 2; the purpose of the C-shape of the bar (12) is that its motion does not affect a shaft (15) that is jointed to said bar (12) through a crank (16) so that the resulting motion of the arm (12) implies a rotation of the shaft (15) that is meant to transmit the motion to the door locking mechanisms, which is foreign to the invention and the description of which is beyond its scope.
1. Actuation device for sliding-locking doors, particularly for sliding doors of the
type used in train cars and the like, in which two combined and consecutive movements
are established, one of longitudinal displacement on the outer face of the car body,
and another of transverse displacement for locking-releasing the door from said body,
comprising transverse guides (3) and longitudinal guides (5) for the displacement
of the doors (1) that can move forward, that is, in a locking-releasing sense, by
the action of a pneumatic cylinder (11) which is hinged onto the fixed chassis with
respect to which move the doors (1), said pneumatic cylinder (11) incorporating rigidly
connected to a free end of its shaft, an arm (12) having a C-shaped configuration,
characterized in that said arm (12) is hinged on its free end (13) to a second arm (14) that will act on
the longitudinal guides (5) of the doors to retract or push them outwards , said arm
(12) being further jointed on its free end (13) to a crank (16) that during the displacement
of the arm (12) undergoes a swiveling motion about a shaft (15) to which it is suitably
keyed, such that said shaft (15) transmits its motion to the door locking mechanism.
2. Actuation device for sliding-locking doors, as claimed in claim 1, characterized in that the transverse guides (3), with which the locking and releasing maneuvers of the
longitudinal guide (5) are effected, are mounted on corresponding groups of four casters
(4) that stabilize its trajectory.
1. Betätigungsvorrichtung für Schiebe-Schließtüren, insbesondere für Schiebetüren des
Typs, die in Bahnwagen und dergleichen eingesetzt werden, bei denen zwei kombinierte
und aufeinanderfolgende Bewegungen ausgeführt werden, d. h. eine Längsverschiebung
an der Außenseite des Wagenkörpers, und eine andere, d. h. eine Querverschiebung zum
Schließen und Lösen der Tür von dem Körper, die Querführungen (3) und Längsführungen
(5) für die Verschiebung der Türen (1) umfasst, die sich durch die Wirkung eines Druckluftzylinders
(11), der an dem festen Chassis angelenkt ist, in Bezug auf das sich die Türen (1)
bewegen, vorwärts, d. h. in einer Schließ-Löse-Richtung, bewegen können, wobei der
Druckluftzylinder (11) einen Arm (12) mit einem C-förmigen Aufbau enthält, der starr
an einem freien Ende seiner Stange angebracht ist, dadurch gekennzeichnet, dass der Arm (12) an seinem freien Ende (13) an einem zweiten Arm (14) angelenkt ist,
der auf die Längsführungen (5) der Türen wirkt, um sie einzuziehen oder nach außen
zu schieben, wobei der Arm (12) des Weiteren an seinem freien Ende (13) mit einer
Kurbel (16) verbunden ist, die während der Verschiebung des Arms (12) eine Schwenkbewegung
um eine Welle (15) herum ausführt, auf die sie geeigneterweise gekeilt ist, so dass
die Welle (15) ihre Bewegung auf den Türschließmechanismus überträgt.
2. Betätigungsvorrichtung für Schiebe-Schließtüren nach Anspruch 1, dadurch gekennzeichnet, dass die Querführungen (3), mit denen die Schließ- und Lösevorgänge der Längsführung (5)
ausgeführt werden, an entsprechenden Gruppen von vier Laufrollen (4) angebracht sind,
die ihre Bahn stabilisieren.
1. Dispositif d'actionnement pour des portes coulissantes à emboîtement, en particulier
pour des portes coulissantes du type utilisé dans des voitures du train et analogue,
dans lequel deux mouvements combinés et consécutifs sont établis, un d'un déplacement
longitudinal sur la face externe de la caisse de voiture, et un autre d'un déplacement
transversal pour relâchement du verrouillage de la porte de ladite caisse, comprenant
des guidages transversaux (3) et des guidages longitudinaux (5) pour le déplacement
des portes (1) qui peuvent se déplacer vers l'avant, c'est-à-dire dans un sens de
relâchement de verrouillage, sous l'action d'un vérin pneumatique (11) qui est articulé
au châssis fixe par rapport auquel se déplacent les portes (1), ledit vérin pneumatique
(11) incorporant, relié d'une manière rigide à une extrémité libre de son arbre, un
bras (12) ayant une configuration en forme de C, caractérisé en ce que ledit bras (12) est articulé à son extrémité libre (13) à un second bras (14) qui
agira sur les guidages longitudinaux (5) des portes pour les rétracter ou les pousser
vers l'extérieur, ledit bras (12) étant en outre relié à son extrémité libre (13)
à une manivelle (16) qui, pendant le déplacement du bras (12), subit un mouvement
de pivotement autour d'un arbre (15) auquel elle est clavetée d'une manière appropriée
de sorte que ledit arbre (15) transmet son mouvement au mécanisme de verrouillage
de la porte.
2. Dispositif d'actionnement pour des portes coulissantes à emboîtement selon la revendication
1, caractérisé en ce que les guidages transversaux (3), avec lesquels les manoeuvres de verrouillage et de
libération du guidage longitudinal (5) sont effectuées, sont montés sur des groupes
correspondants de quatre roulettes (4) qui stabilisent sa trajectoire.