EP0359640A1 - Device for guiding the removal and insertion of a wing from or into its frame, and door, especially for a rail vehicle, so equipped - Google Patents

Abstract

The leaf (7) is inserted in the closure position between the vertical edges (3, 4) of an opening to be closed. A slide (29) of a driven element (23) slides with respect to an intermediary element (24) which slides in turn on a slide (27) of a support element (21). The sliding means (31, 32) of the intermediary element are external to each other and are offset with respect to each other in the transverse direction and in the longitudinal direction. A jack acting on a toggle joint (31, 41) maintaining the support element (21) unnests the rear edge (17) of the leaf. A jack (51) makes the leaf (7) slide with respect to the support element (21) to clear the grove (11) from a rib (9) and unnest the front edge (12) by means of a finger (18) of the leaf engaged into a slide (19), while an arm (36) pivots outwardly. Utilization for purposes of compactness, precision, facility of construction, freedom in the choice of the leaf trajectory.

Description

The present invention relates to a device for guiding the extraction and insertion of a leaf in its frame, during the opening and respectively closing of the leaf.

The present invention further relates to a door, in particular for a rail vehicle, thus equipped.

It is more particularly a question of guiding in a movement substantially transverse to the plane of the opening to be closed off, a crew with respect to which the leaf is guided in a sliding manner in a general direction substantially parallel to the plane of the opening. Thus, to open the leaf, the crew is guided in the direction of extraction of the leaf relative to the plane of the opening using the means concerned by the invention, and, at the same time as that or after that , the leaf is caused to slide relative to the crew. To close the leaf, the reverse operations are carried out, ending with an insertion of the leaf as part of the opening.

To guide the crew to the insertion and extraction of the leaf, devices are known comprising two parallel rods, each articulated to the frame of the opening and to the crew. However, this device has the drawback that the path of the leaf is curved and makes it necessary to hollow out one of the uprights of the frame or else to lengthen the rods a great deal to reduce the curvature.

In addition, this trajectory is not compatible with all the requirements that may arise. In particular, this known device does not allow the so-called "swaying" trajectory, since the leaf always remains parallel to itself. Finally, the known device requires precise assembly, under penalty of jamming.

There is also known a device comprising two slides perpendicular to the plane of the opening, which guide the crew relative to the frame. There is no longer the disadvantage of the curvature of the trajectory, but the moving trajectory remains impossible and the manufacturing precision must be even higher than that of the previous device.

We also know, to ensure the swaying trajectory, systems comprising a slide (undesirable) in the external face of the bodywork, or complex systems of combined action on the leaf by an appropriate transmission device (FR-A-2 278 893).

The object of the invention is to propose a guidance system for insertion and extraction which is simple, compact, does not require great manufacturing precision and leaves great freedom of choice of the path for the leaf. .

The invention thus relates to a device for guiding a crew with respect to which a leaf is slidably mounted, during movements of insertion and extraction of this leaf relative to a frame of an opening controlled by the leaf, this device comprising a first arm articulated on the one hand to a first element positioned at an invariable distance from a plane of the opening and on the other hand to the crew to which the leaf is connected by means of sliding operation means, and a second arm articulated to the first element.

According to the invention, the device is characterized in that the second arm is connected to the crew by means of a link articulated along two distinct axes on the one hand to the second arm and on the other hand to the crew .

The rod eliminates most of the possibilities of jamming, even if the center-axes of the system are dimensionally imprecise. In addition, by selective control of the two arms, or of the first arm and of the link, it is possible to choose at will from very varied trajectories for the leaf. In other words, a position of one of the arms can correspond to many positions of the leaf corresponding to different positions of the other arm. We can thus, in particular, give the leaf a so-called "tacking" trajectory, as will be seen below. In addition, the arms may have positions relative to each other which can, by construction, be chosen very freely according to the requirements of the path of the leaf and of space. The arms can, for example, be substantially directed towards each other.

According to another aspect of the invention, the door, in particular for a rail vehicle, equipped with a device according to the first aspect, is characterized by means of engagement between the front edge of the leaf and a conjugate edge of the opening. This interengagement, which is a very economical way for the door to resist lateral forces, is made possible by an appropriate swaying trajectory.

Other features and advantages of the invention will emerge from the description below.

• - la figure 1 est une vue de dessus, en coupe partielle, d'une porte de véhicule ferroviaire équipée d'un dispositif selon l'invention ;
• - la figure 2 est une vue en élévation de la partie supérieure de la porte de la figure 1, depuis l'intérieur du véhicule à échelle réduite ;
• - la figures 3, 4 et 5 sont des vues schématiques de dessus, illustrant le principe du dispositif de manoeuvre par coulissement, respectivement en position de fermeture, en position de semi-ouverture et en position d'ouverture du vantail ;
• - la figure 6 est une vue en élévation de la face intérieure du vantail ;
• - la figure 7 est une vue simplifiée du vantail en coupe selon le plan VII-VII de la figure 6 ;
• - la figure 8 est une vue du vantail de la figure 6, en coupe selon le plan VIII-VIII, et des glissières correspondantes portées par le véhicule ;
• - les figures 9 et 10 sont deux vues analogues à la figure 1, mais à échelle réduite, et montrant le vantail dans une position de déboîtement et respectivement dans une position de début du mouvement de coulissement vers la position d'ouverture ;
• - les figures 11 et 12 sont des vues analogues à la figure 1 mais simplifiées et à échelle réduite, et concernant quatre autres modes de réalisation de la porte selon l'invention ;
• - les figures 13 et 14 illustrent deux réalisations possibles pour le mouvement de déboîtement du vantail de la porte de la figure 12 ;
• - les figures 15 et 16 illustrent la suite du mouvement de la porte de la figure 12 ;
• - la figure 17 est une vue analogue à la figure 13 mais concernant une variante de réalisation ;
• - les figures 18 et 19 représentent les moyens de transmission de la porte de la figure 17, respectivement en position repliée et en position d'extension ; et
• - les figures 20 et 21 sont des vues analogues aux figures 18 et 19 mais dans une variante de réaliation.

In the appended drawings given by way of nonlimiting examples:

• - Figure 1 is a top view, in partial section, of a rail vehicle door equipped with a device according to the invention;
• - Figure 2 is an elevational view of the upper part of the door of Figure 1, from inside the vehicle on a reduced scale;
• - Figures 3, 4 and 5 are schematic views from above, illustrating the principle of the device for maneuvering by sliding, respectively in the closed position, in the semi-open position and in the leaf open position;
• - Figure 6 is an elevational view of the inner face of the leaf;
• - Figure 7 is a simplified view of the leaf in section along the plane VII-VII of Figure 6;
• - Figure 8 is a view of the leaf of the Figure 6, in section along the plane VIII-VIII, and corresponding slides carried by the vehicle;
• - Figures 9 and 10 are two views similar to Figure 1, but on a reduced scale, and showing the leaf in a disengaged position and respectively in a position for starting the sliding movement towards the open position;
• - Figures 11 and 12 are views similar to Figure 1 but simplified and on a reduced scale, and concerning four other embodiments of the door according to the invention;
• - Figures 13 and 14 illustrate two possible embodiments for the disengagement movement of the leaf of the door of Figure 12;
• - Figures 15 and 16 illustrate the continuation of the movement of the door of Figure 12;
• - Figure 17 is a view similar to Figure 13 but relating to an alternative embodiment;
• - Figures 18 and 19 show the transmission means of the door of Figure 17, respectively in the folded position and in the extended position; and
• - Figures 20 and 21 are views similar to Figures 18 and 19 but in an alternative embodiment.

In the example shown in Figures 1 and 2, the door according to the invention comprises a frame including two vertical uprights 1 and 2 are visible in Figure 1. This frame defines a rectangular opening having a front vertical edge 3 along the upright 1, a rear vertical edge 4 along the upright 2 and an upper horizontal edge 6 (Figure 2). The opening 3, 4, 6 can be closed selectively by a leaf 7 of corresponding shape. In the closed position, represented in FIGS. 1 and 2, the leaf 7 is inserted into the opening 3, 4, 6, that is to say that the external surface of the leaf 7 is substantially in the extension of the surface exterior 8 of the vehicle body.

In addition, the front edge 3 of the opening carries a rib 9 which, when the leaf is closed, is engaged in a corresponding groove 11 of the leaf, so as to achieve between the leaf and the amount 1 a mechanical connection capable of resisting transverse forces which can be exerted on the leaf due to pressure variations occurring in particular during passage through tunnels. This connection by rib and groove has the advantage of being less expensive than a lock system. Along the rear edge 4, on the other hand, it will be possible, for the same purpose, to provide a lock system not shown.

As shown in Figures 9 and 10, to move the leaf 7 from its open position to its closed position, it must first be put in a disengaged position, in which it is released from the edge 4 of the opening while the rib 9 is still engaged in the groove 11 along the opposite edge 3, then make it undergo a movement backwards to release the groove 11 relative to the rib 9 (movement according to the arrow in FIG. 9) , then continue this movement backwards while spreading the front edge 12 of the leaf towards the outside of the opening, that is to say towards the outside of the vehicle relative to the plane PP (FIG. 10) of the 'opening.

Means acting directly on the leaf provide part of the guides necessary for this movement.

In particular, as shown in Figure 6, the leaf 7 can carry in the vicinity of its lower edge two brackets 13 terminated by fingers 14a and 14b sliding in respective slides 16a and 16b carried by the vehicle under the frame of the opening . The slide 16a, cooperating with the finger 14a near the front edge 12 of the leaf 7 has a horizontal profile corresponding to the desired path for the edge 12, namely first, in the opening direction, a relative disengagement movement of the rib 9 and the groove 11, then a progressive disengagement movement of the edge 12 towards the outside of the opening. The slide 16b which cooperates with the finger 14b adjacent to the rear edge 17 of the leaf 7 has a horizontal profile corresponding to the sudden dislocation movement desired for the edge 17 towards the outside of the opening at the start of the opening movement. The slides 16a and 16b support the weight of the leaf 7.

In addition, the leaf 7 carries on its upper edge, a short distance from its front edge 12, an upper finger 18 directed upwards and engaged in a slide 19 (Figures 1, 2, 7 and 9) whose horizontal profile corresponds substantially to that of the slide 16a. Consequently, the fingers 14a and 18 and the slides 16a and 19 in which they are engaged participate in the resistance to lateral forces provided by the interlocking rib 9 - rib 11 in the closed position.

The finger and slide systems are not described in detail because the skilled person knows how to improve them, for example by equipping the fingers with rollers.

The invention relates to the means which allow the leaf to be actuated between its different positions, and which guide the upper rear region of the leaf without resorting to a slide formed in or on the external surface 8 of the vehicle body.

These means comprise a support assembly 21 which is mounted under the upper edge 6 of the opening, and at a short distance from the latter, with the possibility of displacement transverse to the plane of the opening by means 22 which will be described later.

The support unit 21 belongs to a device for maneuvering the leaf 7 by sliding, a device which will be described below in principle in the figures 3 to 5.

In these figures, the sliding operation device is described as applied to a simply sliding door, that is to say not having to be inserted into the frame in the closed position. This embodiment is only described by way of explanation of the sliding means, but is not intended by the invention since the leaf is not inserted in the frame in the closed position. In this case, the support crew 21 can be considered as fixed relative to the body of the vehicle. The operating device further comprises a driven element 23 fixed to the leaf 7, and an intermediate element, or carriage, 24. The support element 21 comprises a frame 26 and a slide 27 fixed by its two ends to the frame 26. The slide 27 extends over a large part of the width of the opening controlled by the leaf 7.

Similarly, the driven assembly 23 comprises a frame 28 (generally the leaf) and a slide 29 fixed by its two ends to the frame 28. The slide 29 has a length close to that of the slide 27 and extends parallel to the latter. The slide 29 is offset towards the outside of the opening (that is to say towards the outside of the vehicle) relative to the slide 27. The slides 27 and 29 are male sliding elements, for example bars of circular or square section.

The carriage 24 comprises first female sliding means 31 and second female sliding means 32. The first sliding means 31 are slidably mounted on the slide 27 of the support assembly 21 and the second sliding means 32 are mounted slidingly on the slide 29 of the driven equipment 23. The first and second sliding means 31 and 32 are, for example, tubes open at both ends and whose internal section corresponds to the external profiles, preferably identical, slides 27 and 29 respectively.

The first and second sliding means are therefore tubes 31 and 32 external to one another.

The second sliding means 32 have a lateral offset d towards the outside of the opening with respect to the first sliding means 31.

In addition, the tube 32 has a longitudinal offset D towards the rear relative to the tube 31 relative to the closing direction of the leaf shown by an arrow Fe in FIG. 3. In addition, each of the tubes 31 and 32 has a length that is substantially equal to half the length of the slide 27 or 29 with which it cooperates. The intermediate assembly 24 has lateral recesses 33 and 34 respectively along each tube 31 or 32 in the extension of the other tube over the entire length corresponding to the offset D. The tubes 31 and 32 are therefore not connected one to the other than in their overlapping region 35. This connection is rigid. The intermediate crew thus has a general Z shape.

The length of the overlap region 36 being small compared to the offset D, the total length of the intermediate crew 24 is close to that of the crews 21 and 23.

As shown in FIG. 4, the sliding operation device which has just been described makes it possible to move the leaf 7 from the closed position to a partially open position, according to a first stroke d1 parallel to the slides 27 and 29 by sliding the tube 31 on the slide 27.

It is then or simultaneously possible, as shown in FIG. 5, to pass the leaf 7 from the partially open position to the fully open position, according to a second stroke d2 situated in the extension of d1, by making slide the slide 29 back into the tube 32.

As clearly shown in Figures 3, 4 and 5, in each position of the leaf 7, each tube 31 or 32 is guided by its entire length on the corresponding slide 27 or 29. In addition, the difference between the internal face 7a (FIG. 5) of the leaf 7 and the external surface 8 of the vehicle body is barely greater than the space taken up by the thickness of the tube 32.

We will now describe with reference to FIGS. 1, 2, 9 and 10 the device 22 for guiding the support crew 21 and supporting it against the forces to which it is exposed during the maneuvering of the leaf, which ensures guiding to the leaf itself, especially in its rear upper region which is not guided by a slide.

The device 22 comprises a first arm 36 articulated on the one hand to the frame of the vehicle along a vertical axis 37 located inside the opening (that is to say inside the vehicle relative to the plane PP of the opening) and in the vicinity of the edge 3 thereof, and on the other hand to the support assembly 21 along an axis 38 parallel to the axis 37.

The device 22 further comprises a second arm 39 which is articulated to the vehicle frame along a vertical axis 40 also located inside the opening, but close to the edge 4 of the latter. The device 22 further comprises a link 41 of which one end is articulated to the second arm 39 along an axis 42 and the other end is articulated to the support assembly 21 along an axis 43. The axes 42 and 43 are distinct and parallel to the axis 40. The arm 39 and the link 41 therefore form a toggle.

From their articulation 37, 40 to the frame, the arms 36 and 39 are directed substantially towards one another, however with a slight inclination towards the interior of the vehicle when the leaf 7 is in its insertion position in the opening to be closed (figure 1).

The device 22 further comprises means to, from the leaf closed position, pivot, in the direction of the leaf extraction, first the arm which is located at the rear of the leaf relative to the closing direction, i.e. say in the example the second arm 39.

As such, the second arm 39 is constituted by a bent lever whose end opposite the axis 42 is coupled to the movable end 44 of an actuating cylinder 46 whose other end 47 is articulated to the frame of the vehicle.

Thus, to pass the leaf 7 from its closed position shown in Figure 1 to its partial open position shown in Figure 10, we start by actuating the cylinder 46 which rotates the arm 39 in the direction of disengagement of the rear edge 17 of the leaf 7 towards the outside of the opening, the leaf therefore taking the position shown in FIG. 9. This is permitted by the end 116b, bent substantially at 90 ° relative to the plane of the opening, of the slide 16b (FIG. 8) which contributes to guiding the rear edge 17 of the leaf.

On the contrary, the front edge 12 of the leaf remains substantially in the plane of the opening due to the interengagement of the rib 9 in the groove 11 and the engagement of the fingers 14a and 18 in the respective slides 16a and 19.

Thanks to the motor means which will be described later, the leaf 7 is then caused to slide relative to the support unit 21. As the slides 16a (FIG. 8) and 19 (FIG. 9) have substantially end sections 116a and 119 parallel to the plane of the opening, the aforementioned movement of sliding of the leaf 7 is reflected, at its beginning, by a movement of the front edge 12 substantially in the plane of the opening, which allows the groove 11 to be released from the rib 9 of the edge 3 of the opening. The sliding movement continuing, the front edge 12 of the leaf 7 is guided outwards by the oblique regions 216a and 219 of the slides 16a and 19 respectively, so that after approximately a quarter of the total stroke of leaf 7, it is substantially in a plane parallel to the plane of the opening and moves parallel to this plane (Figure 10). This disengagement of the front edge 12 towards the outside results in a rotation of the arm 36 around its axis 37 towards the outside of the opening.

It will be noted that, thanks to the sliding maneuvering device requiring only a small gap between the leaf and the external surface of the body when the leaf is in the at least partially open position, the extraction stroke of the leaf from the position closing, and insertion of the leaf when it arrives in the closed position is relatively low, which allows the use of arms 36 and 39 very short. In addition, thanks to the interposition of the link 41 between the support assembly 21 and one of the arms, in this case the arm 39, the arms can be directed towards each other, as shown, without that there is a need for a slide between one of the arms 36 or 39 and the crew 21 and without risk of entanglement. Thus, their axes 37 and 40 can, as shown, be arranged on either side of the opening, without encroaching on the latter. When the leaf is extracted from the opening, the arms 36 and 39 are always directed substantially towards one another, but this time with a slight inclination towards the outside of the opening (FIG. 10).

We will now describe the motor means for actuating the leaf by sliding.

As shown in FIG. 1, these means comprise a jack 51 whose body 52 is fixed to the support assembly 21 and whose movable rod 53 is connected to the intermediate crew 24 by a lug 54. The jack extends parallel to the crew tube 31.

In addition, means of transmission are provided. ensuring a coupling between the movement of the intermediate crew 24 relative to the support crew 21 and the movement of the driven crew 23 relative to the intermediate crew 24. These transmission means comprise a pinion 56, of axis vertical, rotatably supported by region 35 of the intermediate crew 24. The pinion 56 meshes with two parallel racks arranged face to face, namely a rack 57 fixed to the support crew 21 and a rack 58 fixed to the driven crew 23. Thus, any movement of the intermediate crew 24 relative to the support crew 21 is accompanied by a movement in the same direction of the driven crew 23 with respect to the intermediate crew 24. Consequently, the jack 51 acting between the support crew 21 and the intermediate crew 24 causes movement of the driven crew 23 relative to the support crew 21 at a speed which is twice that of the crew 24 by compared to the crew 21. The combination actuating cylinder 51 - transmission means 56 to 58 has the double advantage of simplifying the control of the door and making the leaf movements faster since the two sliding means 31 and 32 operate simultaneously instead of operating one after the other as described with reference to FIGS. 4 and 5.

In general, as already mentioned, the means for guiding the lower region of the leaf (13, 14, 16 - Figures 6 to 8) are of the type with carrier rollers (they have only been shown schematically in Figures 6 to 8) and support the weight of the leaf. The arms 36 and 39 must, for their part, balance the weight of the support crew 21 and of the intermediate crew 24 which tend to pivot down around the slide 29 especially if the latter is cylindrical.

For this purpose, it is favorable that the arms 36 and 39 are each rigidly fixed to a column 59 pivoting at each of its ends in a clamp 61 fixed to the vehicle frame (Figure 2).

In addition, the means 22 provide the support crew 21 with a positioning which is not altered by the forces developed by the jack 51. This results from the fact that the arm 36 cannot assume for each position of the leaf, that a well determined orientation conditioned by the slides 16a and 19.

The insertion and extraction device shown in FIG. 1 has the advantage of allowing very many insertion and extraction paths. We have seen with reference to Figures 9 and 10 that this device allows an insertion and extraction path called "tacking", that is to say in which, from the closed position, the leaf 7 s 'tilts outward at a certain stage of the movement instead of remaining parallel to itself.

Figure 11 illustrates that this is by no means mandatory. On the contrary, the device with two arms 36 and 39, one of which is equipped with a link 41 allows very particularly well insertion and extraction movements substantially perpendicular to the plane of the opening. Indeed, the axis 38 of connection between the arm 36 and the support assembly 21 describes a trajectory having only a very small lateral deflection e relative to a mean line 71 perpendicular to the plane PP of the opening. If it is arranged, for example by means of a coupling bar 72, that any rotational movement of the arm 36 is accompanied by a corresponding rotational movement, in the opposite direction, of the arm 39, the axis 43 of connection between the rod 41 and the support assembly 21 follows a trajectory substantially parallel to that of the axis 38, so that the entire leaf 7 is extracted from the opening parallel to itself according to this path. The slight lack of rectilinearity of this trajectory has no effect in practice. On the other hand, the device presents significant advantages of compactness, the absence of the need for a chamfer on one or the other of the uprights 1 and 2, and above all the absence of any risk of coincidence even if the construction precision is only approximate.

In the example shown in Figure 12, the support assembly 21 is fixed to the vehicle frame although the leaf 7 is of the type fitting into the opening to be closed in the closed position. This example will only be described with regard to its differences from that of FIG. 1. The intermediate equipment 24 comprises a first carriage 24a, carrying the first sliding means 31, and a second carriage 24b carrying the second means sliding 32. The carriages 24a and 24b are connected to each other by means for modifying the lateral offset between the first 31 and the second 32 sliding means.

The means for modifying the lateral offset comprise a first arm 73, one end of which is articulated to the carriage 24a along an axis 74 and the other end of which is articulated to the carriage 24b along an axis 76. The carriages 24a and 24b are further connected l to one another by a toggle 77 functionally mounted in parallel with the arm 73 and comprising a second arm 78 articulated to the carriage 24a along an axis 79, and a link 81 articulated to the second arm 78 along an axis 82 and to the second carriage 24b along an axis 83. The axes 74, 76, 79, 82 and 83 are mutually parallel and vertical in the example.

Thus, in this example, the first carriage 24a constitutes the "first element situated at an invariable distance from the plane of the opening" and the second carriage 24b constitutes the "equipment with respect to which the leaf is slidably mounted".

When the offset between the sliding means 31, 32 is minimal (FIG. 12) the two arms 73, 78 are, from the first sliding means 31, oriented towards the front relative to the closing direction of the leaf indicated by an arrow Fe. The first carriage 24a has a length which does not exceed that of the first sliding means 31. On the other hand, the second carriage 24b is extended towards the front, that is to say in the direction of the arrow Fe, beyond the second sliding means 32, by an extension 84 extending substantially as far as the front end of the carriage 24a when the offset between the tubes 31 and 32 is minimal. The hinge pin 76 of the first arm 73 with the second carriage 24b is located at the anterior end of the extension 84. The hinge pin 79 of the second arm 78 with the first carriage 24a is located at the end rear of carriage 24a. The articulation axis 83 of the rod 81 with the second carriage 24b is located at the front end of the tube 32. Thus, as shown in FIG. 16, even in the fully open position of the leaf 7, the arm 73 and the toggle joint 77 remain below the rear bond 4 of the opening and therefore do not require increasing the gap to be provided between leaf 7 and external surface 8 of the bodywork, nor of hollowing out the upright 2 locally.

The device of FIG. 12 works as follows:
- If, as shown in Figure 13, it is desired that the leaf 7 is extracted from the opening by a movement during which it remains parallel to itself, the two arms 73 and 78 are actuated simultaneously which, from the first carriage 24a, pivot towards the outside of the vehicle, substantially parallel to one another; this parallelism does not need to be rigorous since the link 81 can compensate for defects in precision. This simultaneous movement of the arms 73 and 78 can be obtained by coupling the two arms together, for example by means of a coupling bar 86 or even by means of a gear coupling 87.

A jack (not shown) is provided on one of the carriages, above or below the tube 31 or 32 corresponding to ensure this movement. The cylinder acts on one of the arms 73, 78, or on the link 81. This extraction movement is accompanied by an increase in the longitudinal offset between the tubes 31 and 32, that is to say a beginning of the leaf opening movement 7. Only after this extraction movement, the sliding movement begins, first by sliding the first carriage 24a along the slide 27 (FIG. 15) then by sliding the slide 29 relative to the second carriage 24 (FIG. 16).

The embodiment of FIG. 12 also allows the extraction of the "tacking" type as shown in FIG. 14. For this, the deployment of the toggle joint 77 is first caused by a jack. located behind the first arm 73 relative to the closing direction Fe of the leaf. The arms 73 and 78 are no longer coupled to pivot together. In addition, the door according to this embodiment is equipped with the guide means described with reference to FIGS. 6 to 8, in particular the finger 18 movable in a slide 19 and, at the bottom of the leaf, a finger 14a movable in a slide 16a (not shown in Figure 14). Once the toggle 77 is deployed, one begins to slide the carriage 24a on the slide 27 so as to release the groove 11 from the rib 9. The sliding movement continuing, the finger 18, traversing the slide 19, causes the movement from the front edge 12 towards the outside of the vehicle, and a corresponding pivoting of the arm 73 about its axis 74 of articulation with the first carriage 24a. The opening movement continues as shown in Figures 15 and 16.

When the intermediate crew is subdivided into two carriages 24a and 24b as described in FIGS. 12 to 16, it is still possible to provide transmission means so that the movement of the first carriage 24a on its slide 27 automatically causes movement of the second carriage 24b on its slide 29. As shown in the FIG. 17 provides for this purpose a pinion 88 mounted idly around an axis 89 carried by the first arm 73 at a distance from its articulation axis 74 with the first carriage 24a. A driven sprocket 91 carried by the second carriage 24b in the anterior region of the tube 32 meshes with the rack 58 linked to the driven crew 23. A primary transmission chain 92 rotates a chain sprocket 93 integral with the sprocket 88 with a chain sprocket 94 mounted idly in rotation about the axis 76 of articulation of the first arm 73 with the second carriage 24b, and a secondary transmission chain 96 rotates the intermediate chain sprocket 94 with a driven chain sprocket 97 integral in rotation with the driven pinion 91.

As shown in FIG. 18, the positioning of the axis 89 of the primary pinion 88 is such that when the lateral offset between the first and the second carriage is minimal, the primary pinion 88 is moved away from its rack 57 secured to the crew support. Thus, the rotation of the first arm 73 about its axis 74 to pass from the position shown in Figure 12 to the position shown in Figure 13 does not result in any rotation of the driven pinion 91, and therefore in no relative movement of the slide 29 relative to the second carriage 24b.

As shown in FIG. 19, the primary pinion 88 meshes with the rack 57 when the first arm 73 reaches its position of maximum deployment. Therefore, the movement of the carriage 24a along the slide 27 causes the rotation of the pinion 88, rotation which is transmitted by the primary chain 92 and the secondary chain 96 to the driven pinion 91 which, meshing with the rack 58, causes the movement sliding of the driven crew 23 relative to the second carriage 24b.

By ensuring, by the eccentric position of the pinion 88 relative to the axis 74, that the transmission of movement takes place only after deployment of the arm 73, one avoids the appearance of a parasitic movement which result from the pivoting of the arm 73 and tend to move the leaf 7 in the closing direction when the arm 73 is deployed, and in the opening direction when the arm 73 is folded down, that is to say in each case, in the opposite direction to the general movement desired for the leaf 7, respectively opening and closing.

The example shown in Figures 20 and 21 and identical to that of Figures 17 to 19 except that the pinion 88 is mounted idly on the axis 74 of pivoting of the arm 73 relative to the first carriage 24a. This embodiment is more particularly intended for the example of FIG. 14, so that the movement of the first carriage 24a relative to the support crew 21 is transformed into a movement of the support crew 23 relative to the second carriage 24 even at the start of the opening movement or at the end of the closing movement, when the arm 73 is not fully extended.

Note: the chain sprockets can be replaced by sprockets with toothed belts or by a gear train.

Claims (13)

1. Device for guiding a crew (21, 24b), with respect to which a vehicle door leaf is slidably mounted, during movements of insertion and extraction of this leaf relative to a frame (1, 2) of an opening (3, 4, 6) controlled by the leaf (7), this device comprising a first arm (36; 73) articulated on the one hand to a first element (61, 24a) positioned at invariable distance from a plane (PP) of the opening and on the other hand to the crew (21, 24b) to which the leaf (7) is connected by means (24, 27, 29) of sliding operation (32, 29 ), and a second arm (39, 78) articulated to the crew, characterized in that the second arm (39, 78) is connected to the second element (21; 24b) via a link (41, 81) articulated along two distinct axes (42, 43) on the one hand to the second arm (39) and on the other hand to the crew (21; 24b). 2. Device according to claim 1, characterized in that it further comprises means (14a, 14b, 18; 16a, 16b, 19) for guiding at least one leaf point (7) relative to a frame whose frame (1, 2) is integral. 3. Device according to claim 1, characterized by means (46) for, starting from a closed position of the leaf (7), pivoting in the direction of extraction of the leaf first of all the arm (39, 78) which is closest to a rear edge (17) of the leaf (7) relative to the direction (Fe) of closing the leaf. 4. Device according to claim 3, characterized in that the means for pivoting the arm (39) which is closest to the rear edge (17) comprise motor means (46) acting essentially directly on the arm (39 ) which is located at the rear of the leaf (7). 5. Device according to claim 3 or 4, characterized by means (116a, 119) which maintain a front edge (12) of the leaf (7) in the plane (PP) of the opening when the leaf (7) performs a part of its stroke adjacent to the closed position. 6. Device according to claim 5, characterized in that the means which hold a front edge (12) of the leaf (7) are guide means (14a, 18, 116a, 119) which guide the leaf (7) relative to the frame when the leaf (7) is moves by sliding. 7. Device according to claims 3 to 6, characterized in that the arm which is closest to a rear edge (17) of the leaf (7) is the second arm (39, 78). 8. Device according to claims 1 to 7, characterized in that the first element (24a) is movable relative to the frame (1, 2) by sliding parallel to the plane (PP) of the opening (3, 4, 6). 9. Device according to claim 8, characterized by transmission means (88, 91 to 94, 96) supported at least in part by at least one of the arms (73) to transform into a sliding movement of the leaf (7 ) relative to the crew (24b) the sliding movement of the first element (14a) relative to the frame (1, 2). 10. Device according to claim 9, characterized in that the transmission means are supported by said arm (73) so as to be uncoupled when the leaf (7) is inserted in the opening and to be operational when the leaf (7 ) is extracted from the opening. 11. Device according to claims 1 to 7, characterized in that the first element (61) is integral with the frame (1, 2). 12. Device according to claim 11, characterized in that, from their articulation (37, 40) to the first element (61) the two arms (36, 39) are directed substantially towards one another. 13. Door, in particular for a rail vehicle, equipped with a device according to one of claims 4 to 8, characterized by means of engagement (9, 11) between the front edge (12) of the leaf and a conjugate edge ( 3) of the opening (3, 4, 6).

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