FR2881998A1 - Motor vehicle, has upper and lower carriages forming two main support points for sliding door, lower roller forming additional support point to door, and guide pin, forming temporary support point for door, located on inner side of door - Google Patents

Abstract

The vehicle has upper and lower carriages (5, 6) and a lower roller (15), to guide a sliding door (100). The two main support points of the door are situated at the carriages which are located at diametrically opposite positions, when the door is in a closed position. The roller forms an additional support point to the door. A guide pin forming a temporary guide and a support point for the door is located on an inner side of the door.

Description

The present invention relates to the field of sliding doors for

  vehicles of the automotive type or the like.

  The sliding door system in motor vehicles, is increasingly appreciated for its advantages, especially in terms of accessibility (opening sides, and trajectories when opening and closing more direct).

  In particular, the sliding side doors (still labeled PLC), bring a real gain in accessibility to the rear seats, especially in a restricted environment (for example, when the vehicle is parked next to a wall, or another vehicle ).

  Classic PLC has drawbacks. It includes in particular at least one rail (in which the PLC slides) which can be exposed to impact when the door is open. Finally, when the rail is apparent, it decreases the aesthetic and therefore commercial interest of the vehicle.

  On the other hand, there are constraints on the cutting of the rear door, the cut to be adapted to the sliding system. In addition, an autoclave door is required to prevent corrosion. Finally, the thickness of the door box is reduced (which implies storage spaces or reduced weirs).

  It would thus be preferable to use a PLC, with a frame attached or without a frame, without a central rail on a body, which makes it possible not to modify the cut line of the rear door of the current vehicle, to maintain a thickness of door of the swing door type (about 170 mm), and to install an External Opening Control (COE) at the back of the door.

  Mitsubishi is a manufacturer that has marketed a central railless PLC. The rail is indeed placed in the door, and it is an arm-trolley attached to the body that comes to articulate the door. Two other guide rails are placed on the one hand in the stretcher and on the other hand in the floor of the vehicle.

  The main rail is not apparent, which reduces the constraints related to the design of the vehicle. Thus, the rail / trolley system is not exposed to shocks, it is completely protected from corrosion, and the door is less heavy (the trolley is on the body) which allows to increase its thickness.

  This solution was however not retained for the following vehicle versions. Indeed, it has been found that the three support points provided for sliding the door tend to align when the door was open (and thus decreased the lift triangle), and therefore a strong degradation of the door holding in Y (the Y axis being perpendicular to an axis X defined as the main axis of sliding of the door along the bodywork, and perpendicular to an axis Z which is normal to the floor of the vehicle).

  Another sliding door assembly, proposed especially in WO 02/081244 and EP 0 210 730, overcomes this problem of lack of end-of-travel behavior (ie open door position), by involving another attachment point of the door coming into active position at the end of the race, which then serves as a guide Y (thus avoiding the door to rotate around the upper and lower carriages).

  The central guide is internal to the door box. Referring to Figures 1A and 1B, showing the door 100 of such a sliding door assembly in the respective closed and open positions according to EP 0 210 730. At the start of the race (closed door position, Figure 1A), the door is supported at three points A, B, C forming a lift triangle having vertices sufficiently open to sufficiently support the door 100 so that it does not attempt to rotate towards the Y axis. At the end of the stroke (door position open, FIG. 1B), these three points A, B, C tend to align, so that they are no longer sufficient to have a satisfactory holding of the door 100 (ie the lifting triangle has one of its angles at the top insufficiently open). an elastic means D is then provided on the outer part of the bodywork 300, and is triggered to cooperate with connecting means of the inner face of the door when the door approaches its open position, thus obtaining the required door hold .

  However, this elastic means D (i.e. this fourth fulcrum) is located on and is supported by the body 300, and is therefore subjected to the weather of the external environment. In addition, this elastic means D is apparent when the door is open, so it is not desired from an aesthetic point of view and therefore economic.

  A first object of the invention is to provide a sliding door having sufficient strength during the entire sliding path thereof.

  A second object of the invention is to achieve this first objective by reliable and aesthetically acceptable means.

  To achieve these objectives, the invention proposes a vehicle, comprising a door and means for guiding the door, the door being adapted to be slidably mounted on the guide means at different points, one of these points, said temporary point, becoming active only when the door is at least partially open, characterized in that the means used to achieve the temporary point (D) are located on the inner side of the door, the door is open or closed.

  Other features of this sliding door assembly are: said part of the guide means producing the temporary point is a pin arranged so that it comes to cooperate in an active position with a means of cooperation integral with the inner face of the door, when the door is in a certain open position; the guide means comprise means on which the pin is mounted, these means cooperating with the door opening system so that the pin passes from an inactive position to said active position when the door is in a position of determined opening; said means cooperating with the door opening system are rotatably mounted on the vehicle body, and in that these means are rotated by the opening system of the door in operation, and in that the pion is in active position from a rotation angle of these means determined; - It further comprises two rails and a sliding means fixed on the inner face of the door, the guide means comprises a third rail adapted to slide said sliding means and three other sliding means for sliding in the first two rails two of the last three sliding means being slidable on the same rail, and one of the latter sliding means forming said temporary point; - It further comprises means for removing the door from its frame over a distance greater than about the expected thickness of the door box; - said various points, including said temporary point, are at least four in number; the means for taking out the door comprise a platform intended to be rotatably mounted on the vehicle body, the platform supporting two sliding means capable of forming two of said four points, the first of the two sliding means being in the active position for sliding and the second being able to come into an active position when the platform rotates sufficiently to place it in the active position and then realize said temporary point; the two sliding means mounted on the platform are separated from each other by a distance sufficient for the second sliding means, when in the active position, to compensate for any lack of support for the door by the other three points, when moving the door; it further comprises a first rail fixed on the inner face of the door, and in that said first rail is able to slide on said first and second sliding means, the first rail being placed so as to receive the two means of sliding, the second sliding means being in its said active position when it is on the first rail; the first rail is provided with a track for the first sliding means, and a track for the second sliding means when it comes into active position; - The axis of rotation of the platform is substantially perpendicular to the overall sliding direction of the door; - It further comprises a striker support secured to the platform; the platform is arranged and arranged in such a way that the application of a sufficient torque to the platform causes a force to be applied to the door by means of the said first sliding means to cause a proportional spacing of the latter; ci, the platform can thus be rotated between a first angular position called closed door and a second angular position called open door about its axis of rotation; - The means for leaving the door further comprises an electric motor coupled to the axis of the platform, the electric motor being adapted to apply said torque to the platform; - The platform is arranged and intended to be arranged so that said second angular position said open door of the platform is substantially identical to the angular position of the platform which puts in active position said second sliding means; - The means for removing the door comprise a non-rectilinear guide portion of a guide means, the non-rectilinear guide portion being provided so as to guide the door out of its frame when a force is applied to the outside ; the non-rectilinear guide portion is arranged so that the guidance is towards the rear of the vehicle; - The guide means which comprises the non-rectilinear portion further comprises a substantially rectilinear portion in continuity of the non-rectilinear portion; - The guide means is a second curved rail in the non-rectilinear guide portion, and the vehicle further comprises a third sliding means integral with the door and slidable on the second rail; - The second rail is intended to be fixed on the vehicle body, facing the third sliding means:; the first rail is fixed on the upper part of the door and the second rail is intended to be fixed on the box facing the lower part of the door; - Said means for removing the sliding door from its frame are arranged to also allow the entrance of the sliding door in its frame; the door is mainly supported at two of the different points, these two so-called bearing points being in diametrically opposed positions when the door is closed; the first and second bearing points are respectively said first and third sliding means; a third of said different points is positioned so that it forms with the two bearing points, when the door is closed, a triangle whose vertices have sufficiently large angles to prevent the door from tending to turn around two three points; - the third point is located on the side of the lower part of the door; - It further comprises a third rail and a fourth sliding means forming said third point and sliding on the third rail, the third rail being substantially parallel to the overall sliding direction of the door; the third sliding means is integral with the platform; at least one of said different points is formed by the point of contact of a roller with a surface; at least one of said different points consists of a reduced zone delimited by the contact points of different rollers of a carriage-type sliding means, with a surface; it further comprises a hinge device arranged so that one side of the door is inserted into the closed door position, is rotated around a hinge axis during an exit movement of the door, so when the angle of rotation of the door reaches a certain value, and allows the opposite movement.

  Other characteristics, objects and advantages of the invention will emerge from the description which follows, which is purely illustrative and nonlimiting, and which will be read with reference to the accompanying drawings in which: FIGS. 1A and 1B show a sliding door system 10 according to the state of the art, respectively in closed and open position.

  Figure 2 shows an overview of a sliding door assembly according to the invention.

  FIG. 3 represents a first element of the sliding door assembly according to FIG. 2.

  FIG. 4 represents a second element of the sliding door assembly according to FIG. 2.

  FIG. 5 represents a sliding means included in the second element according to FIG. 3.

  FIGS. 6A to 6C show other sliding means 20 included in the second element according to FIG. 4.

  FIGS. 7A to 7D respectively represent different operating steps of a sliding door system according to the invention, seen from above.

  FIGS. 8A and 8C show the different displacements of the bearing points of the door during its sliding, between a closed door position and an open door position.

  Referring to Figure 2, there is shown a set of sliding door according to the invention. This assembly here comprises a door 100 whose rear portion is referenced 101 and the front portion is referenced 102, and different means for guiding the door 100, the door 100 being adapted to be slidably mounted on the guide means. The guide means here comprise two sliding means 5 and 15 and a lower rail 2. The lower rail 2 is intended to be fixed on the lower body of the vehicle. The sliding means 5 and 15 are included in a device 50 (discussed below) which is mounted on the vehicle body.

  The inner side of the door 100 is provided with an upper rail 3 and a medium rail 4 for respectively receiving the sliding means 5 and 15, and a sliding means 6 intended to be received on the lower rail 2.

  In this illustrative assembly of the invention, the two main points of support of the door 100 are located at the sliding means 5 and 6 which are advantageously located, when the door 100 is in the closed position, in diametrically opposed positions for a better holding of the door 100 at rest. With reference to FIGS. 3 and 6C, these sliding means 5 and 6 respectively consist of an upper carriage 5 and a lower carriage 6 consisting of oriented rollers and arranged so as to overcome all the forces during their movements respectively in the upper rail 3 and in the lower rail 2. Here, the upper carriage 5 is formed of a carrier roller 21 whose axis is perpendicular to the direction of gravity, flanked by two guide rollers 20 whose respective axes are substantially orthogonal to that of the carrier roller 21, and an anti-pivoting roller 22, all embedded in a yoke 19 attached to the device 50. In addition, the lower carriage 6 is formed of a carrier roller 18 whose axis is perpendicular to the direction of gravity, flanked by two guide rollers 17 whose respective axes are substantially orthogonal to that of the carrier roller 18, all supported by a yoke 16 attached to a lower arm 7 integral with the inner face of the door 100, the lower arm 7 extending generally perpendicular to the surface of the box surrounding the door 100 and its length being about equal to or greater than the thickness of the box. The tracks of the upper rail 3 and the lower rail 2 are essentially complementary shapes of the outer forms of the top 5 and lower 6 carriages, to allow a good guide without too large intermediate game that could affect the strength of the door 100 (see in particular Figures 3 and 6B). The lower rail 2 is advantageously arranged to be protected from shocks, corrosion and contamination.

  In particular, it will be provided to make it watertight throughout the course of the lower carriage 6.

  With reference to FIG. 5, the sliding means 15 is here a roller 15 secured to the remainder of the device 50 by a rigid lower guide arm 14 whose hook end, extending in a direction substantially perpendicular to the overall direction X of sliding of the door 100, forms the axis of rotation of the roller 15. This roller 15 is arranged here to make up the efforts of the door 100 along Y. The shape of the track of the medium rail 4 is complementary to that of the external surface of the roller 15. This lower roller 15 can guide the door during its sliding movement so as to form an additional point of support to the door 100, and avoid him to tend to turn around the other two points of 5 when the door 100 is in the closed position, the roller 15 is located at a position as far as possible from both the upper carriage 5 and the lower carriage r 6 so that these three elements form the vertices of a triangle of levitation of the door large enough to securely hold the door 100. The upper carriage 5 and the roller 15, mounted on the device 50, are spaced one of the other a distance tending to remain constant during the movement of the door 100. In contrast, the roller 15 and the lower carriage 6 will tend to approach one another when opening the door 100, as we will see later, which will then decrease the opening of the triangle of levitation. At the end of the race, it will then be planned a fourth fulcrum of the gate 100 as we will see.

  In addition, the door 100 is arranged to be sealed in a conventional manner per se, especially when in the closed position. The inner side of the door may further include conventional centering pins 9 assisting the positioning thereof. These pins are for example conventional PLC centering devices.

  Referring to Figure 4, is shown the device 50 which is adapted to allow the door out of its box. This device 50 comprises: a platform 8 rotatably mounted on the vehicle body around an axis 11 extending substantially in the gravitational direction, and / or in a direction perpendicular to the overall direction X of sliding of the door; the upper carriage 5 and another sliding means 10 supported by the platform 8, so that the upper carriage 5 can be caught in the upper rail 3; the guide arm 14 integral with the platform 8 and extending downwardly from the door 100 away from the platform 8 so that the roller 15 is caught in the medium rail 4.

  The device 50 is rotatably mounted on the body around the axis 11.

  The sliding means 10 is. a guiding pin 10 forming a fourth support and guiding point of the door 100 (in addition to the upper and lower trolleys 5 and 6 of the roller 15). The pin 10 is intended to come into the upper rail 3 to be guided then sliding, when the platform 8 makes a sufficient rotation around the axis 11 to place it in this active position. In the closed door position, the pin 10 is outside the upper rail 3 (as shown in Figure 3). In the fully open door position, the pin 10 is in the upper rail 3 and is slidable there (as shown in FIG. 6B). For this purpose, the pin 10 is advantageously a roller movable about an axis substantially parallel to the axis of the carrier roller 21 of the upper carriage 5, and the upper rail 3 is provided with another track (in addition to the track to guide the upper carriage 5) to guide the pin 10, whose end is provided with a side slot 23 adapted to contain the pin 10, the pin 10 being adapted to be housed there naturally. During the trajectory of the door, the pin is engaged in the light, typically halfway through the door, when it begins a longitudinal path (end of the transverse component of the movement of the door). In addition, the upper rail 3 is provided with a sufficient passage (not shown in the figures) to allow the pin 10 to be in the active position when it comes to cooperate with the upper rail 3.

  The upper carriage 5 and the pin 10 are separated from each other by a sufficient distance so that the pin 10, when it is in the active position, compensates for a possible lack of support for the door 100 by the other three points of support (5, 6, and 15), when moving the door (as will be explained later).

  Optionally, the device 50 comprises a striker holder 13 (with an optional hinge spring 12) so that the lock striker of the door 100 can be attached thereto.

  Referring to Figures 7A to 7D, are shown the different phases of opening of the door 100.

  With reference to FIG. 7A, the opening of the door 100 is effected by the rotation of the platform 8 about its axis 11. The application of a sufficient torque to the platform 8 indeed entails the application of a force on the door 100 via said upper carriage 5 and causes a proportional spacing thereof, the platform 8 can thus be rotated between a first angular position called closed door and a second angular position called open door around of its axis of rotation 11.

  For this purpose, the device 50 further comprises a motor for applying this torque.

  To guide the door out of its frame, the lower rail 2 has a non-rectilinear, curved guide portion located on the front side 102 of the door 100, and whose radius of curvature is adapted to the exit movement of the desired door 100 , directed towards the rear of the vehicle.

  In a first phase, therefore, and with reference to Figures 7A, 7B and 7C, the rotation of the platform 8 causes a rotation of the door 100 around hinges included on a central foot 25 of the frame of the door 100. Beyond a certain value of rotation of the platform 8, and therefore of the door 100, it can escape the hinge through fork-shaped joints (not shown). The door 100 therefore deviates sufficiently in Y to ensure a good box thickness, that is to say that it deviates over a distance greater than about the thickness of the vehicle box. For this purpose, it will be provided to space the upper carriage 5 of the axis of rotation 11 by an equivalent distance.

  Still during this first phase, the rotation of the platform 8 causes the rotation of the pin 10, and the platform 8 is arranged so that in the open position, the pin 10 is found in the active position in the upper rail 3, forming thus a fourth fulcrum (in addition to those located at the upper carriages 5 and lower 6, and the roller 15).

  The full rotation of platform 8 is about 175 degrees here. According to a second phase, with reference to FIGS. 7C and 7D, the door 100 slides in translation along the axis X. The linear sliding movement along X is carried out so that, under the application of a force essentially in the direction X, the lower carriage 6, the upper rail 3, the medium rail 4, fixed to the door 100 are slidably driven on the guide means (lower rail 2, upper carriage 5, roller 15 and pin 10) immobilized along X. The main support during sliding is at the level of the two upper and lower trolleys 6, on the two carrier rails which are the rectilinear portion of the lower rail 2 and the upper rail 3.

  This action is advantageously motorized, for example at the level of the upper carriage 5.

  The medium rail 4 makes it possible to provide a Y guide via the guide roller 15, to prevent the door from pivoting around the two points that form the two carrying carriages 5 and 6.

  The lower carriage 6 on the door is closer to the carriage 5 and the roller 15, which has the effect of reducing the triangle of levitation.

  Finally, the fourth fulcrum, formed by the guide pin 10, is triggered in the slot 23 provided at the bottom of the upper rail 3.

  This fourth support point makes it possible to improve the resistance of the door 100 in Y. The Applicant has also conducted conclusive tests during procedures performed with forces of + -30 daN at the level of the Opening Command. Exterior (COE), in a horizontal plane, perpendicular to the movement of the door.

  With reference to FIG. 7D, the end of the linear travel of the door 100 along the X axis is represented, the door 100 then being completely open. The intervention of the fourth point (guiding pin 10) thus makes it possible to stiffen the door with a Y-shaped hold, to prevent it from pivoting around the two bearing points 5 and 6.

  The opposite operation applies for closing the door 100.

  FIGS. 8A to 8C show the different displacements of the bearing points A, B, C and D of the door 100 during its sliding, between a closed door position (FIG. 8A) and an open door position (FIG. 8C), the points A, B, C, D being respectively at the level of the upper carriage 5, the lower carriage 6, the roller 15 and the pin 10.

  It can be seen that, during the displacement of the door, the triangle of levitation (whose vertices correspond to the points A, B and C) becomes narrower, in particular the angle of the vertex  becomes very weak at the end of the course, which means a weak support of the door likely to rotate around the points A and B or A and C. The provision of a fourth support D at the end of the race then overcomes this problem, including providing a sufficient distance between the upper carriage 5 and the pin 10 so that the fourth point D is sufficiently far from the point A for the door to be sufficiently supported.

  The sliding door assembly according to the invention therefore provides good mechanical strength along the path of the door 100, thanks in particular to the introduction of the fourth guide point D. This sliding door assembly is particularly suitable for a door Lateral sliding, the latter being motorized, without upper rail on body, or central rail on body, and can have a good seal especially in the closed position.

  In addition, this set allows to keep a freedom of design for the cutting of the door, for the rear and for the tightened of the vehicle, that is to say that, in the absence of central or central rail in the middle of the body, there is no need to match the shape of the body with the shape of the rail to allow the door to move. We can then draw a vehicle more bulging at the back.

  The invention can furthermore make it possible to make a door without a frame by mounting the center pillar directly on the casing.

  In addition, no constraint is imposed on the door casing, the latter retaining a door-type door thickness. It is possible to provide an external electric control opening to the rear

  of the door, since part of the first phase of the door opening is swing door type, with rotation around the center pillar.

  The fourth bearing point D of the door 100 is located, as are the other three bearing points A, B, C, on the inside of the door 100, which avoids the problem already mentioned of a point of contact. support located on the exterior body of the vehicle.

Claims (32)

CLAIMS,   1. A vehicle comprising a door (100) and means for guiding the door, the door being able to be slidably mounted on the guide means at different points (A, B, C, D), one of these points, said temporary point (D), becoming active only when the door (100) is at least partially open, characterized in that the means implemented to achieve the temporary point (D) are located on the inner side of the door (100), that the door (100) is open or closed.   2. Vehicle according to claim 1, characterized in that said part of the guide means realizing the temporary point is a pin (10) arranged so that it comes to cooperate in an active position with a means of cooperation (23) solidarity of the inner face of the door, when the door (100) is in a determined open position.   3. Vehicle according to claim 2, characterized in that the guide means comprise means (8) on which is mounted the pin (10), these means (8) cooperating with the opening system of the door so that the pin (10) moves from an inactive position to said active position when the door (100) is in a determined open position.   4. Vehicle according to claim 3, characterized in that said means (8) cooperating with the opening system of the door are rotatably mounted on the vehicle body, and in that these means (8) are rotatably driven. by the system for opening the door in operation, and in that the pin (10) is in the active position from a rotation angle of these means (8) determined.   5. Vehicle according to one of claims 1 to 4, characterized in that it further comprises two rails (3, 4) and a sliding means (6) fixed on the inner face of the door (100), the guiding means comprise a third rail (2) capable of sliding said sliding means (6) and three other sliding means (5, 15, 10) for sliding in the first two rails (3, 4), two of these last three sliding means being slidable on the same rail, and one of the latter sliding means forming said temporary point (D).   6. Vehicle according to one of claims 1 to 5, characterized in that it further comprises means for removing the door (100) from its frame for a distance greater than about the expected thickness of the door casing.   7. Vehicle according to the preceding claim, characterized in that said various points (A, B, C, D), including said temporary point (D), are at least four in number.   8. Vehicle according to the two preceding claims, characterized in that the means for removing the door (100) comprises a platform (8) intended to be rotatably mounted on the vehicle body, the platform (8) supporting two sliding means (5, 10) able to form two of said four points (A, B, C, D), the first (5) of the two sliding means being in the active position to slide, and the second (10) being adapted to come to put in an active position when the platform (8) rotates sufficiently to place it in the active position and then realize said temporary point (D).   9. Vehicle according to the preceding claim, characterized in that the two sliding means (5, 10) mounted on the platform (8) are separated from each other by a distance sufficient for the second sliding means. (10), when in the active position, mitigates a possible lack of support of the door (100) by the other three points (A, B, C), during the movement of the door.   10. Vehicle according to one of claims 8 and 9, characterized in that it further comprises a first rail (3) fixed on the inner face of the door (100), and in that the first rail (3) is slidable on said first and second sliding means (5, 10), the first rail (3) being arranged to receive the two sliding means (5, 10), the second sliding means (10) being in its said active position when it is on the first rail (3).   11. Vehicle according to the preceding claim, characterized in that the first rail (3) is provided with a track for the first sliding means (5), and a track for the second sliding means (10) when the latter comes into active position.   12. Vehicle according to one of claims 8 to 11, characterized in that the axis of rotation of the platform (8) is substantially perpendicular to the overall sliding direction of the door (100).   13. Vehicle according to one of claims 8 to 12, characterized in that it further comprises a striker support (13) integral with the platform (8).   14. Vehicle according to one of claims 8 to 13, characterized in that the platform (8) is arranged and arranged such that the application of sufficient torque to the platform (8) causes the application of a force on the door (100) via said first sliding means (5) to cause a proportional spacing thereof, the platform (8) can thus be rotated between a first angular position said closed door and a second angular position said door open around its axis of rotation (11).   15. Vehicle according to the preceding claim, characterized in that the means for outputting the door further comprises an electric motor coupled to the axis of the platform (8), the electric motor being adapted to apply said torque to the platform (8). ).   16.Vehicle according to one of the two preceding claims, characterized in that the platform (8) is arranged and intended to be arranged so that said second angular position called said open door of the platform (8) is substantially identical to the position angular of the platform (8) which activates said second sliding means (10).   17. Vehicle according to one of claims 6 to 16, characterized in that the means for removing the door (100) comprise a non-rectilinear guide portion of a guide means (2), the non-rectilinear guide portion being provided so as to guide the door (100) out of its frame when a force is applied to the outside.   18. Vehicle according to the preceding claim, characterized in that the non-rectilinear guide portion is arranged so that the guidance is towards the rear of the vehicle.   19.Vehicle according to one of the two preceding claims, characterized in that the guide means (2) which comprises the non-rectilinear portion further comprises a substantially rectilinear portion in continuity with the non-rectilinear portion.   Vehicle according to one of the three preceding claims, characterized in that the guide means is a second rail (2) curved in the non-rectilinear guide portion, and in that the vehicle further comprises a third sliding means. (6) integral with the door and slidable on the second rail (2).   21.V vehicule according to the preceding claim, characterized in that the second rail (2) is intended to be fixed on the vehicle body, facing the third sliding means (6).   22.Vehicle according to one of claims 11 and 21, characterized in that the first rail (3) is fixed on the upper part of the door (100) and the second rail (2) is intended to be fixed on the body opposite the lower part of the door (100).   23. Vehicle according to one of claims 6 to 22, characterized in that said means for removing the door (100) are arranged to also allow the entrance of the sliding door in its frame.   24.Vehicle according to one of the preceding claims, characterized in that the door is mainly supported at two (A, B) of the different points (A, B, C, D), these two points said carriers being in diametrically opposed positions when the door (100) is closed.   25. Vehicle according to claims 22 and 24, characterized in that the first and second bearing points (A, B) are respectively said first and third sliding means (5, 6).   26. Vehicle according to one of the two preceding claims, characterized in that a third (C) of said different points (A, B, C, D) is positioned so that it forms with the two bearing points, when the door is closed, a triangle whose vertices have sufficiently large angles to prevent the door (100) from tending to turn around two of the three points.   27.V vehicule according to the preceding claim, characterized in that the third point (C) is located on the side of the lower part of the door.   28.Vehicle according to one of the two preceding claims, characterized in that it further comprises a third rail (4) and a fourth sliding means (15) forming said third point (C) and sliding on the third rail ( 4), the third rail (4) being substantially parallel to the overall direction of sliding of the door (100).   Vehicle according to one of the three preceding claims, characterized in that the third sliding means (15) is integral with the platform (8).   30. Vehicle according to one of the preceding claims, characterized in that at least one of said different points (A, B, C, D) is formed by the point of contact of a roller with a surface.   31.Vehicle according to one of the preceding claims, characterized in that at least one of said different points (A, B, C, D) consists of a reduced area delimited by the contact points of different rollers of a slide-type sliding means with a surface.   32. Vehicle according to one of the preceding claims, characterized in that it further comprises a hinge device arranged so that one side of the door is inserted in the closed door position, is rotated around it. a hinge axis during an exit movement of the door, so that when the rotation angle of the door reaches a predetermined value, and allows the reverse movement.