EP1789300B1 - Vehicle door provided with a seal - Google Patents

Abstract

The invention relates to a railway vehicle including a body defining a wall in which an access passage is embodied, at least one closing sliding door, a sealing joint carried by the door and applicable to the wall when said door in a closed position. Said wall includes a panel provided with a generally cylindrical envelop and a seat which is protruded with respect to said panel and defines a bearing surface for supporting the joint only when the door is in the closed position, wherein said bearing surface of a supporting element extends along a profile substantially identical to the joint profile and said joint profile extends transversely with respect to the door displacement direction.

Description

The present invention relates to a railway vehicle, of the type comprising a box delimiting a wall in which is formed an access passage, at least one sliding sliding door, slidably movable in a direction of movement parallel to the wall between a position closing the passage and a retracted position along the wall away from the passageway, a seal carried by a member having one of the wall and the door and adapted to be applied when the door is in position shutter, on a support member of the seal formed on the other side of the wall and the door to ensure sealing, which support member comprises a panel having a generally cylindrical envelope

Such a vehicle is known from the document DE 37 10 451 A1 .

The passenger trains, especially for urban and suburban travel, are equipped with sliding doors to close access passages inside the train. Commonly, these doors comprise a leaf deviating from the passage or two leaves contiguous to one another when they are in the closed position in front of the passage and away from each other to their retracted position each of on both sides of the passage.

In order to ensure tightness, especially in wind, and rain or pressure waves, the doors are equipped at their periphery with a seal. This seal is applied to the outer surface of the flat wall of the vehicle at the edge of the passage when the door is in the closed position.

During the rectilinear movement of the door parallel to the flat wall of the vehicle, the seal remains in contact with this wall and rubs thereon. Thus, the seal deteriorates rapidly and the surface of the wall is degraded by the friction of the seal.

Some doors are movably mounted along the wall of the vehicle in a complex non-rectilinear movement allowing, when the door is opened, to first remove it from the wall in order to loosen the seal and then only to move the door along the wall.

The means necessary to allow such a movement of the door are relatively complex and expensive.

Furthermore, inflatable seals are also known which, when the door is in the closed position expands to bear against the wall and retracts to move away from the wall when the door must be opened. Such seals are expensive and must be formed of a flexible material that is poorly resistant to vandalism.

The object of the invention is to propose a railway vehicle comprising doors equipped with a seal which has a limited manufacturing cost while allowing a significant service life of the seal.

For this purpose, the subject of the invention is a railway vehicle of the aforementioned type, characterized in that the support element comprises a seat projecting from the panel, which seat defines a bearing surface for the support of the joint only when the door is in the closed position, which bearing surface of the support element, extends in a substantially identical profile to that of the seal, and the profile of the seal extends transversely to the direction of movement of the door.

• l'élément d'appui est la paroi et le joint est porté par la porte ;
• le siège délimite un cadre formant dormant de porte qui est rapporté et solidarisé au panneau de la paroi ;
• le siège est formé par un renflement de la paroi de la caisse ;
• le joint a un profil extérieur généralement polygonale, et aucun des côtés du polygone défini par le joint ne s'étend pas parallèlement à la direction de déplacement ;
• la surface de portée a une normale tournée vers l'extérieur du passage ;
• le siège est bordé, du côté de la partie centrale de la porte, d'une gouttière d'évacuation des ruissellements d'eau transversale à la direction de déplacement ;
• la porte n'est déplaçable que suivant un mouvement de translation par rapport à la paroi, lequel déplacement s'effectue généralement parallèlement au plan du panneau ;
• lorsque la porte est en dehors de sa position d'obturation, le joint est écarté du panneau principal de l'élément d'appui ;
• la caisse comporte suivant un bord inférieur du passage, un marchepieds, et la porte est dimensionnée pour, en position d'obturation, recouvrir le marchepieds.

According to particular embodiments, the railway vehicle comprises one or more of the following characteristics, taken separately or together in any technically possible combination:

• the support element is the wall and the seal is carried by the door;
• the seat defines a frame forming a door frame which is attached and secured to the panel of the wall;
• the seat is formed by a bulge of the wall of the body;
• the seal has a generally polygonal outer profile, and none of the sides of the polygon defined by the seal extends parallel to the direction of movement;
• the bearing surface has a normal facing outward of the passage;
• the seat is bordered on the side of the central part of the door, a gutter drain water flows transverse to the direction of travel;
• the door is movable only in a translation movement relative to the wall, which movement is generally parallel to the plane of the panel;
• when the door is out of its closed position, the seal is moved away from the main panel of the support member;
• the box comprises, along a lower edge of the passage, a running board, and the door is sized to, in the closed position, cover the running board.

• la figure 1 est une vue partielle en élévation de côté d'un véhicule ferroviaire selon l'invention avec la porte fermée ;
• la figure 2 est une vue identique à celle de la figure 1 avec la porte ouverte ;
• la figure 3 est une section du véhicule de la figure 1 prise suivant la ligne III-III alors que la porte est fermée ;
• les figures 4, 5, et 6 sont des vues en section à plus grande échelle d'un détail de l'interface entre la porte et la paroi du véhicule prises suivant les lignes IV-IV, V-V et VI-VI de la figure 1 ; et
• la figure 7 est une vue en section du véhicule de la figure 2 prise suivant la ligne VII-VII, alors que la porte est ouverte.

The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the drawings, in which:

• the figure 1 is a partial side elevational view of a railway vehicle according to the invention with the door closed;
• the figure 2 is a view identical to that of the figure 1 with the door open;
• the figure 3 is a section of the vehicle of the figure 1 taken along line III-III while the door is closed;
• the Figures 4, 5, and 6 are views in section on a larger scale of a detail of the interface between the door and the vehicle wall taken along lines IV-IV, VV and VI-VI of the figure 1 ; and
• the figure 7 is a sectional view of the vehicle from the figure 2 taken along line VII-VII, while the door is open.

On the figure 1 is partially shown a car 10 of a passenger train. This car 10 forms a railway vehicle comprising a body 12 delimiting a living space for passengers.

As known per se, the body 12 is generally tubular and comprises two opposite side walls 14, a roof 15 and a bottom 16.

A floor 17 is provided in the box 12 for the reception of the passages.

In the example considered, the wall 14 comprises a panel 18 having a generally cylindrical envelope, that is to say that the panel 18 is generated by the displacement of a generator in a closed contour corresponding to the section of the body 12.

Access passages 20 inside the box 12 are formed in the side walls 14 at regular intervals. These passages 20 open on most of the height of the body 12. In the lower part of each passage 20 is formed in the body 12, a step or step 21 allowing a passenger to reach the floor 17 of the car 10 from a platform extending to a lower level.

A door 22 is provided for closing each passage 20 and the cover of the running board 21. In the example considered, the door 22 comprises two leaves 22A, 22B symmetrical to each other with respect to a vertical axis. They are movable between a closed position in which the two leaves 22A, 22B are contiguous along a vertical edge and in which they extend in front of the passage 20 and a retracted position in which each leaf 22A, 22B extends along the wall 14 away from the passage 20 and the step 21 thus allowing access for passengers.

Each leaf 22A, 22B is movable in translation in a rectilinear manner parallel to the panel 18 in a direction of displacement D represented on the Figures 1 and 2 . This direction of displacement D is for example perpendicular to the vertical axis of symmetry of the leaves 22A, 22B.

For this purpose, the leaves 22A, 22B are carried by upper and lower rails not shown integral with the body 12. The leaves 22A, 22B comprise rolling members received in these rails.

In addition, an actuating mechanism, such as cylinders are arranged between the body 12 and the leaves 22A, 22B to allow their movement along the rails.

Each leaf 22A, 22B comprises at its periphery seals 42.

In particular, the leaves 22A, 22B comprise, along their opposite edges, complementary seals 40 extending in the plane of the leaves 22A, 22B and adapted to be applied against each other when the door 22 is in its shutter position.

In addition, on the outer longitudinal edge and along the upper and lower edges, each leaf 22A, 22B is equipped with an elongated seal 42 carried by the face of the leaf 22A, 22B turned towards the body 12. This seal 42 extends in a polygonal profile formed in the example of three successive segments 44, 46, 48 defining between them angles greater than 90 °.

As illustrated in Figures 3, 4, 5 and 6 , the seal 42 is carried by a recessed flange 49 formed on the periphery of each leaf 22A, 22B.

This rim 49 is turned towards the panel 18 but is kept away from it.

The seal 42 is fixed to be in all circumstances spaced from the panel 18 by a non-zero gap I visible on the figure 7 .

The profile of the seal 42 is defined so that the joints always extend transversely to the direction D of displacement of the door 22.

In particular, the door 22 and the passage 20 being polygonal, the sides of the polygon carrying a seal are arranged so that they do not extend parallel to the direction of displacement D. The door 22 and the passage 20 may be of any shape, provided that the contact surface between the seal 42 and the bearing surfaces 58, 60, 62 of the seal is transverse to the direction D.

For the purposes of the present application, the term "transverse" or "transversely" is interpreted as not parallel to direction D.

Thus, the longitudinal segment 46 of the seal 42 extends along the height of each leaf 22A, 22B perpendicular to the direction of displacement D.

The upper segment 44 defines with the direction D, an angle of about twenty degrees so that the leaves 22A, 22B present a height in the vicinity of the seal 40 which is greater than that of the leaf 22A, 22B in the vicinity of the segment 46 seal 42.

Similarly, the lower segment 48 of the seal 42 defines with the direction D an angle of about ten degrees. It is substantially symmetrical with the segment 76 of joint 42 with respect to the direction D.

Thus, and in the embodiment shown in the figures, each leaf 22A, 22B generally has a trapezoidal shape whose large base is turned towards the other leaf 22A, 22B and whose small base extends outwards. of the opening. According to other embodiments, not shown, the leaf 22A, 22B (the leaves) can be of any shape, namely: semi elliptical (elliptical), rectangular (s), ....

The elongated seal 42 is of constant section. It is formed of two substantially parallel lips 50, 52. These lips 50, 52 are elastically deformable thus allowing their compression against a bearing surface. Around the periphery of the passage 20, the support surface of the seal 42 is formed by a seat 54 projecting outwards with respect to the panel 18 of the body 14.

The seat 54 constitutes a frame which borders the passage 20 following the region where the seals 42 are located when the leaves 22A, 22B of the door 22 conceal the passage 20.

The seat 54 defines a bearing surface 56 projecting from the panel 18 and which extends in a profile corresponding to the profile of the seal 42, that is to say that over the entire length of the seal 42, the surface of scope 56 extends to the right of the position of the seal 42 when the door 22 is in the closed position.

Thus, the bearing surface 56 has three successive segments 58, 60, 62 angularly offset by an angle greater than 90 ° as visible on the figure 2 . The bearing surfaces 56 are inclined and have a normal facing outwardly of the passage 20.

In the embodiment considered, the seat 54 is formed of a metal profile visible in detail on the Figures 4, 5, 6 which forms a door frame 22 delimiting the passage 20. This frame is attached to the panel 18 and is secured for example by means of bolts 66 introduced into a wing 68 for fixing the profile. This fixing flange 68 is applied and fixed to the field of the panel 18. The fixing flange 68 is integral with the bearing surface 56. In another embodiment, the seat 54 is formed by a bulge of the seat. wall 14 of the body 12.

Following the upper segment 58, the end of the bearing surface 54 is flanked by a gutter 70 for discharging water runoff. Similarly, each leaf 20A, 20B is equipped in the upper part with a generally horizontal groove 72 disposed on its inner face and extending below the channel 70. The channel 70 is parallel to the seal 42 and to the surface of span 56 in the upper part of the leaf 22A, 22B, so that the runoff is evacuated more easily to the outside of the doors 22 by the slopes that the polygonal shape of the upper part induces.

Segment 60 of the visible range surface on the figure 5 , usually extends vertically.

The inner bearing surface 62 extends under a step of the step board 21 which is fixed on the fastening flange 68.

It can be seen that when the door 22 is in the closed position, the seals 42 are applied against the bearing surface 56 of the seats 54 thus allowing a satisfactory seal around the doors 22.

When the door 22 is opened by moving the leaves 22A, 22B in the direction D, the joints 42 immediately detach from the seats 54 since the joints extend transversely to the direction D of the movement of the doors 22. Thus, after separation of the seals 42, they move while being carried by the door along the panels 18 without coming into contact with them

When closing the doors 22, the leaves 22A, 22B are brought back into place and the seals 42 come into contact with the seats 54 only during the final phase of approaching the closed position.

It is understood that during the displacement of the leaves 22A, 22B, the joints 42 not being in contact with the wall 14, they do not wear out and do not degrade the surface of the wall 14. The presence of the seat 54 protruding for the support of each seal 42 allows to have a door 22 whose displacement is very simple, since only in translation, without complex movements are necessary for contacting the seal 42 with the element of support.

Alternatively, the seal 42 is carried not by the sliding door 22 but by the wall 14 of the box 12 and the seat 54 is formed on the sliding door 22, in this case, the sliding door 22 is closed by a panel full generally cylindrical having a seat 54 projecting for the support of the seal 42.

Of course, the seal 42 may take any profile shape, as long as it is not parallel to the direction of displacement D. In particular, the door 42 and the seal 22 may be advantageously circular or elliptical.

Finally, in a variant, the door 22 has only one leaf 22A, 22B.

Claims (10)

1. Rail vehicle (10) having a body (12) delimiting a wall (14), in which an access opening (20) is arranged, at least one sealing sliding door (22), which is displaceable by sliding in a displacement direction (D) parallel to the wall (14) between a position for sealing the opening (20) and a position retracted along the wall (14) away from the opening (20), a sealing strip (42) carried by a supporting element consisting of either the wall (14) or the door (22) suitable for abutting against a support element of the strip formed by the other element of either the wall (14) or the door (22) when the door (22) is in sealing position in order to assure a seal, said support element comprising a panel (18) having a generally cylindrical casing,
   characterised in that the support element comprises a seat (54) projecting relative to the panel (18), said seat (54) defining a bearing surface (56) for support of the strip (42) only when the door (22) is in the closed position, wherein the bearing surface (56) of the support element extends along a profile essentially identical to that of the strip (42), and in that the profile of the strip (42) extends transversely to the displacement direction (D) of the door (22).
2. Vehicle according to claim 1, characterised in that the support element is the wall (14) and the strip (42) is carried by the door (22).
3. Vehicle according to claim 2, characterised in that the seat (54) delimits a frame forming the base frame of the door (22), which is mounted on and fixed to the panel (18) of the wall (14).
4. Vehicle according to claim 2, characterised in that the seat (54) is formed by a protrusion of the wall (14) of the body (12).
5. Vehicle according to any one of the preceding claims, characterised in that the strip (42) has a generally polygonal external profile, and in that none of the sides of the polygon defined by the strip (42) extends parallel to the displacement direction (D).
6. Vehicle according to any one of the preceding claims, characterised in that the bearing surface (56) has a normal directed towards the outside of the opening (20).
7. Vehicle according to any one of the preceding claims, characterised in that on the side of the central section of the door (22) the seat (54) is bordered by a drainage channel (70) for water flowing transversely to the displacement direction (D).
8. Vehicle according to any one of the preceding claims, characterised in that the door (22) is only displaceable in a translatory movement in relation to the wall (14), said displacement generally occurring parallel to the plane of the panel (18).
9. Vehicle according to any one of the preceding claims, characterised in that when the door (22) is out of its sealing position, the strip (42) is spaced from the main panel (18) of the support element.
10. Vehicle according to any one of the preceding claims, characterised in that the body (12) comprises a running board (21) along a lower edge of the opening, and in that the door (22) is dimensioned such that the running board (21) is covered when it is in the sealing position.

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