PASSENGER CAR PROVIDED WITH A VESTIBULE LOCATED ABOVE A BOGIE AND WITH AN EXTERNAL ACCESS STEP AT A SIDE DOORWAY

Description

TECHNICAL FIELD OF THE INVENTION

[0001] The present invention relates to a passenger car for railway transportation, and more specifically to the problematic of accessing a passenger car from a platform situated at a level below a floor of a vestibule of the passenger car.

BACKGROUND ART

[0002] Passenger cars for railway transportation are provided with one or more side doors, which can be located close to the longitudinal ends of the passenger car or distributed along its length. A door located close to an end of the passenger car offers the advantage of also allowing access to an adjacent car through an intercommunication. It enables to clearly separate the vestibule from the saloon, e.g. with a door or a partition, and to maximise the space allocated to the saloon. In a passenger car with two decks, the vestibule at the end of the passenger is often located at an intermediate level between the two decks car and gives access to a flight of stairs to the upper deck and a flight of stairs to the lower deck.

[0003] The car body of a passenger car is usually supported on one or more bogies, which are usually located close to the ends of the car body, or between cars in the case of articulated rail vehicles. In such cases, the vestibule and the side doors are often located at least partially above one of the bogies.

[0004] Side doors located above the bogies provide an additional advantage whenever the passenger car is on a curved track alongside a curved platform at a railway station: in such an instance, the side wall of the passenger car is at a distance from the platform, which varies with the curvature of the platform, an these variations are kept at a minimum at the level of the bogies.

[0005] In instances where the platform is at a low height, there may be a need to provide one or more external steps at the doorway, between the vestibule and the platform. Whenever the vestibule and the side doors are located above a bogie, it becomes challenging to find room to accommodate external steps, because of the conflicting space requirements with the bogie. One solution consists in a pivotable step, which pivots by 90° about a horizontal pivot axis between a vertical position and a horizontal position, as disclosed e.g. in DE9421209U1. The horizontal pivot axis is usually located below the door sill, as far as possible from the longitudinal centre plane of the car body, so as to avoid interference with the bogie when the bogie rotates relative to the car body about a vertical axis of rotation. The depth of the pivotable step, however, is limited for at least two reasons. First, any interference with the platform should be avoided before the step reaches its operational position, which involves that a safety margin has to be taken into account when defining the distance between the pivot axis and the edge of the platform. Second, the depth of the pivotable step cannot be greater than the distance between the door sill and the pivot axis, which is directly related to the height of the external step relative to the door sill. Standards, however, usually require that the maximum height of the external step (typically 200 mm) should be less than its minimum depth (usually 240 mm). Hence, pivotable steps do not easily meet standard requirements in terms of ergonomics and passenger comfort.

SUMMARY OF THE INVENTION

[0006] The invention aims to provide a vehicle configuration in which a side doorway located above a bogie can be provided with an external access step that has a comfortable depth. The invention is defined by the features of claim 1.

[0007] According to a first aspect of the invention, there is provided a passenger car for railway transportation, the passenger car comprising: a car body and at least one bogie for supporting the car body. The car body is provided with a vestibule, at least one side doorway on one left or right side of the car body for boarding and alighting from the vestibule and a side door for closing the side doorway. The vestibule comprises a floor. The vestibule also comprises at least one inner step, the inner step being lower than the floor, the inner step being located at the side doorway, between the floor and the side door in the closed position. Such an inner step is useful when the platform is particularly low. The car body is further provided with an external access step movable in a transverse direction of the passenger car between a retracted position and at least one protruding position. The bogie comprises a front set and a rear set of left and right wheels for rolling on left and right rails of a rail track, respectively, and a front set and a rear set of left and right bearings for guiding the front set and the rear set of left and right wheels, respectively. The doorway is located at least partially between a front vertical transverse plane containing a revolution axis of the front set of left and right wheels and a rear vertical transverse plane containing a rear revolution axis of the rear set of left and right wheels. The front and rear sets of left and right bearings are located between the left and right wheels of the front and rear sets of left and right wheels, respectively. The inner step and the external access step in the retracted position are located transversally outward from the bogie. The external access step in the retracted position is located below the inner step of the vestibule, whereas in the protruding position, the external access step is lower than the inner step and at least partially extends in front of the side doorway. The external access step is guided in translation between the retracted position and the protruding position

[0008] Because of the specific location of the bearings, the bogie has a reduced width, which provides room for the external access step in the retracted position. Hence, the depth and the height of the external access step can be defined independently from one another and can more easily meet the requirements of the operator, with given constraints in terms of platform height and passenger comfort.

[0009] In a preferred embodiment, the external access step in the retracted position is lower than an upper end of the wheels of the front and rear sets of the left and right wheels. Hence, access to the vestibule of the car body from a very low platform is still possible with only one external access step.

[0010] The motion of the external access step between the retracted position and the protruding position is preferably a planar motion parallel to a transverse vertical plane. The extendable external access step fulfils two functions. When the platform is low, it serves as an intermediate step between the inner step and the platform. When the platform is higher than the external access step, the external access step can still be extended so as to provide a gap filler between the inner step and the platform.

[0011] The external access step is guided so as to remain parallel to itself between the retracted position and the protruding position. Advantageously, an actuator is provided for moving the external access step from the retracted position to any one of a plurality of operational positions between the retracted position and the protruding position and for maintaining the external access step in said operational positions. Hence, the position of the external access step relative to a platform can be adjusted. In an embodiment, the passenger car is further provided with a sensor for detecting a position of a platform or a contact between the external access step and the platform or a proximity of the external access step to the platform, and a controller for controlling the actuator based on a signal of the sensor An automatic adjustment takes place on each platform, so that the gap between the external access step and the platform can be minimised.

[0012] Preferably, the bogie comprises a bogie frame, a primary suspension between the front and rear sets of left and right bearings and the bogie frame and a secondary suspension between the bogie frame and the car body, and the secondary suspension comprises a set of left and right vertical springs. In practice, the car body may comprise an underframe and each of the left and right vertical springs of the secondary suspension has preferably an upper end fixed in a vertical direction relative to the underframe and a lower end fixed in a vertical direction relative to the bogie frame. The vertical springs may comprise one or more of the following: pneumatic springs, helicoidal springs rubber springs.

[0013] In one embodiment, to provide more room for housing the external access step, a barycentre of a footprint of the set of left and right vertical springs on a horizontal plane is located within a rectangle tangential to the footprints of the sets of left and right wheels at least when the passenger car is stationary on a horizontal straight track.

[0014] In one embodiment, the bogie frame comprises a set of left and right longitudinal beams located between the left and right wheels of each of the sets of left and right wheels and at least one transverse beams integral with the set of left and right longitudinal beams, and the primary suspension connects the sets of left and right bearings to the left and right longitudinal beams, respectively. The bogie frame can be made in one piece of steel, cast iron or light metal, or it can be welded or otherwise assembled from several pieces.

[0015] In one embodiment, the car body has a lower deck and an upper deck, in which case the floor of the vestibule is preferably at an intermediate level between the lower deck and the upper deck. Alternatively, the passenger car can have a single deck, in which case the floor is preferably flush with the deck.

[0016] If necessary, the inner step is lower than an upper end of the wheels of the front and rear sets of the left and right wheels.

[0017] In one embodiment, the side door is a double leaf side door. Alternatively, a single leaf side door is also possible.

[0018] In one embodiment, the car body comprises an opposite side doorway, on an opposite left or right side of the car body for boarding and alighting from the vestibule of the car body, an opposite side door for closing the opposite side doorway, the vestibule comprising an opposite inner step, the opposite inner step being lower than the floor of the vestibule, the opposite inner step being located at the opposite side doorway, between the opposite side door and the floor of the vestibule when the opposite side door is in a closed position, transversally outward from the sets of left and right wheels of the bogie.

[0019] In one embodiment, the bogie is located longitudinally between two longitudinal ends of the car body. In an alternative embodiment, the bogie protrudes from a longitudinal end of the car body, so as to constitute a Jacob bogie.

BRIEF DESCRIPTION OF THE FIGURES

[0020] Other advantages and features of the invention will then become more clearly apparent from the following description of a specific embodiment of the invention given as non-restrictive examples only and represented in the accompanying drawings in which:

• figure 1 is a side view of a passenger car according to one exemplary embodiment of the invention with open doors;
• figure 2 is a detail of an end section of the passenger car of figure 1 with open doors;
• figure 3 is a detail of an end section of the passenger car of figure 1 with closed doors;
• figure 4 is a schematic isometric view of a bogie of the passenger car of figure 1;
• figure 5 is a cross-section of the end section of the passenger car of figure 1, with closed doors;
• figure 6 is a cross-section of the end section of the passenger car of figure 1, with open doors and an extended external access step;
• figure 7 is a top view of the bogie of figure 4;
• figure 8 is a cross-section of the end section of the passenger car of figure 1, with open doors and an extended external access step;
• figure 9 is a schematic view of an external access step of the passenger car of figure 1 in a retracted position;
• figure 10 is a schematic view of the external access step of figure 9, in an extended position;
• figure 11 is a schematic view of a control circuit for controlling the external access step of figure 9.

[0021] Corresponding reference numerals refer to the same or corresponding parts in each of the figures.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0022] With reference to Figure 1, a passenger car 10 for railway transportation, comprises a car body 12 supported on a pair of bogies 14.

[0023] The car body 12 consists of an underframe 16, left and right sides 18 and a roof 20, which extend along a longitudinal axis 100 of the passenger car 10 between two opposite longitudinal ends 22 of the car body 12. The car body can be divided into two end sections 24, each comprising one of the ends 22 of the car body 12, and a median section 26 located between the end sections 24. The median section 26 accounts for more than half the overall length of the car body 12 and accommodates one or two decks 28, 30 equipped with passenger seats (not shown). One or both end sections 24 may be provided with a driver's cabin (not shown) or an end doorway 32 for accessing a neighbouring car body, as illustrated in figures 2 and 3. In this embodiment, each end section 24 is provided with two side doorways 34 on the left and right sides 18 of the car body 12 for boarding and alighting a vestibule 36 of the car body 12. The side doorways 34 are closed by double leaf side doors 38. It is to be understood that this configuration is not limitative: side doorways 34 may be provided at one end 24 only or on one side 18 only of the car body 12. Additional side doorways may be provided in the median section 26.

[0024] The vestibule 36 comprises a floor 40 and at least one inner step 42, which is lower than the floor 40 and located at the side doorway 34, between the side door 38 and the floor 36 when the side door 38 is in a closed position, as illustrated in figure 5. In the case of a double deck passenger car 10, the vestibule 36 is preferably located at intermediate height between the lower and upper decks 28, 30.

[0025] The bogies 14, illustrated in figures 4 and 7, are located each below one of the end sections 24 of the car body 12, and each at least partially below the vestibule 36. Each of the bogies 14 comprises a bogie frame 44, a front set and a rear set of left and right wheels 46 for rolling on a rail track, a front set and a rear set of left and right bearings 48 for guiding the front and rear sets of wheels 46, respectively, a primary suspension 50 between the sets of left and right bearings 48 and the bogie frame 44 and a secondary suspension 51 between the bogie frame 44 and the underframe 16 of the car body 12. The wheels 46 of each set can be independent or mounted on a common axle 54. The set of front bearings 48 is located between the left and right wheels 46 of the front set of wheels, while the set of rear bearings 48 is located between the left and right wheels 46 of the rear set of wheels.

[0026] The bogie frame 44 comprises a set of left and right longitudinal beams 56 located transversally between the left and right wheels 46 of each of the front and rear sets of wheels and at least one transverse beam 58 integral with the set of left and right longitudinal beams 56. The primary suspension 50 connects the front and rear sets of bearings 48 to the left and right longitudinal beams 56, respectively.

[0027] The secondary suspension 51 comprises a set of left and right vertical springs 52, which have an upper end fixed in a vertical direction relative to the underframe 16 and a lower end fixed in a vertical direction relative to the bogie frame 44. The vertical springs 52 may comprise one or more of the following: pneumatic springs, helicoidal springs rubber springs.

[0028] Viewed from above, when the passenger car 10 is stationary on a horizontal straight track 1, a barycentre 60 of a footprint of the set of left and right vertical springs 52 on a horizontal plane is located within the smallest rectangle 200 containing the footprints of the sets of left and right wheels 46, i.e. a rectangle tangential to the footprints of the sets of left and right wheels 46, as illustrated in figure 7.

[0029] With this configuration, room is provided for accommodating the inner step 42 of the vestibule 36 and an external access step 62 transversally outward from the bogie 44.

[0030] The external access step 62 is movable in translation in a direction perpendicular to a longitudinal vertical plane of the car body 12 between a retracted position (figures 3, 5 and 9) below the inner step 42 and a protruding position (figure 2, 6, 8 and 10) in front of the side doorway, below the inner step 42. The external access step 62 is moved by an actuator 64, here depicted as a motor 66 which drives a pinion 68 which engages with a rack 70 formed on the lower face of the external access step 62, while the step is guided by a runner 72. The external access step 62 may be equipped with a proximity or contact sensor 74 connected to a controller 76 for controlling the actuator 64, as schematically illustrated in figure 11.

[0031] The extendable external access step 62 fulfils two functions. When the platform 78 is low, as illustrated in figure 6, it serves as an intermediate step between the inner step 42 and the platform 78. When the platform 78 is higher than the external access step 62, as illustrated in figure 8, the external access step 62 can still be extended so as to provide a gap filler between the inner step 42 and the platform 78.

[0032] To ensure that the wheels 46 do not collide with the external access step 62 when the bogie pivots relative to the car body 12 about a vertical pivot axis within preset boundaries, the width W of the external access step 62 and of the doorway 34 is preferably shorter than the distance L between the revolution axes 300 of the front and rear set of wheels 46. The external access step 62 and the doorway 34 are preferably between the transverse vertical planes 400 which contain the revolution axes 300.

[0033] In practice the vertical distance between the floor 40 of the vestibule 36 and the inner step 42 is between 150 mm and 250 mm, as well as the vertical distance between the inner step 42 and the external access step 62.

[0034] In an alternative embodiment, one of the bogies is a Jacob bogie, which protrudes from a longitudinal end of the car body and is located partially below the vestibule.

Claims

1. A passenger car (10) for railway transportation, the passenger car (10) comprising:

- a car body (12), the car body being provided with a vestibule (36), at least one side doorway (34) on one left or right side of the car body (12) for boarding and alighting from the vestibule (36), and a side door (38) for closing the side doorway (34), wherein the vestibule (36) comprises a floor (40) and at least one inner step (42), the inner step (42) being lower than the floor (40), the inner step (42) being located at the side doorway (34), between the floor (40) and the side door (38) in the closed position and the car body is further provided with an external access step (62) movable in a transverse direction of the passenger car (100) between a retracted position and at least one protruding position, wherein the external access step (62) in the protruding position is lower than the inner step (42) and at least partially extends in front of the side doorway (34), and

- at least one bogie (14) for supporting the car body, the bogie (14) comprising a front set and a rear set of left and right wheels (46) for rolling on left and right rails of a rail track (1), respectively, and a front set and a rear set of left and right bearings (48) for guiding the front set and the rear set of left and right wheels (44), respectively,

- the doorway (34) is located at least partially between a front vertical transverse plane (400) containing a revolution axis (300) of the front set of left and right wheels (46) and a rear vertical transverse plane (400) containing a rear revolution axis (300) of the rear set of left and right wheels (46),

characterised in that:

- the front and rear sets of left and right bearings (48) are located between the left and right wheels (46) of the front and rear sets of left and right wheels, respectively, and

- the inner step (42) and the external access step (62) in the retracted position are located transversally outward from the bogie and the external access step (62) in the retracted position is located below the inner step (42) of the vestibule (36) and the external access step is guided in translation between the retracted position and the protruding position.

2. The passenger car (10) of claim 1, wherein the external access step (62) in the retracted position is lower than an upper end of the wheels (46) of the front and rear sets of the left and right wheels (46).

3. The passenger car (10) of any one of the preceding claims, wherein the external access step (62) is guided so as to remain parallel a transverse vertical plane between the retracted position and the protruding position.

4. The passenger car (10) of any one of the preceding claims, further comprising an actuator for moving the external access step (62) from the retracted position to any one of a plurality of operational positions between the retracted position and the protruding position and maintaining the external access step (62) in said operational positions.

5. The passenger car (10) of claim 4, further provided with a sensor for detecting a position of a platform or a contact between the external access step (62) and the platform or a proximity of the external access step (62) to the platform, and a controller for controlling the actuator based on a signal of the sensor.

6. The passenger car (10) of any one of the preceding claims, wherein the bogie (14) comprises a bogie frame (44), a primary suspension (50) between the front and rear sets of left and right bearings (48) and the bogie frame (44) and a secondary suspension (51) between the bogie frame (44) and the car body (12), and the secondary suspension (51) comprises a set of left and right vertical springs (52).

7. The passenger car (10) of claim 6, wherein a barycentre (60) of a footprint of the set of left and right vertical springs (52) on a horizontal plane is located within a rectangle (200) tangential to the footprints of the sets of left and right wheels (46) at least when the passenger car is stationary on a horizontal straight track (1).

8. The passenger car (10) of any one of claims 6 to 7, wherein the bogie frame (44) comprises a set of left and right longitudinal beams (56) located between the left and right wheels (46) of each of the sets of left and right wheels (46) and at least one transverse beams (48) integral with the set of left and right longitudinal beams (56), and the primary suspension (50) connects the sets of left and right bearings (48) to the left and right longitudinal beams (56), respectively.

9. The passenger car (10) of any one of the preceding claims, wherein the inner step (42) is lower than an upper end of the wheels (46) of the front and rear sets of the left and right wheels (46).

10. The passenger car (10) of any one of the preceding claims, wherein the side door (38) is a double leaf side door.

11. The passenger car (10) of any one of the preceding claims, wherein the car body (12) has a lower deck (28) and an upper deck (30) and the floor (40) of the vestibule (36) is at an intermediate level between the lower deck (30) and the upper deck (30).

12. The passenger car (10) of any one of the claims 1 to 10, wherein the bogie (14) is located longitudinally between two longitudinal ends (22) of the car body (12).

13. The passenger car (10) of any one of the claims 1 to 10, wherein the bogie (14) protrudes from a longitudinal end (22) of the car body (12).

Ansprüche

1. Personenwagen (10) für einen Schienenverkehr, wobei der Personenwagen (10) Folgendes umfasst:

- einen Wagenkasten (12), wobei der Wagenkasten mit einem Vorraum (36), wenigstens einer Seitentüröffnung (34) auf einer linken oder rechten Seite des Wagenkastens (12) zum Ein- und Aussteigen aus dem Vorraum (36), und einer Seitentür (38) zum Schließen der Seitentüröffnung (34) versehen ist, wobei der Vorraum (36) einen Boden (40) und wenigstens eine innere Stufe (42) umfasst, wobei die innere Stufe (42) niedriger als der Boden ist (40), sich die innere Stufe (42) an der Seitentüröffnung (34) zwischen dem Boden (40) und der Seitentür (38) in der geschlossenen Position befindet und der Wagenkasten ferner mit einer äußerlichen Zugangsstufe (62) versehen ist, die in einer Querrichtung des Personenwagens (100) zwischen einer eingefahrenen Position und wenigstens einer vorstehenden Position bewegbar ist, wobei die äußerliche Zugangsstufe (62) in der vorstehenden Position niedriger als die innere Stufe (42) ist und sich wenigstens teilweise vor der Seitentüröffnung (34) erstreckt, und

- wenigstens ein Drehgestell (14) zum Stützen des Wagenkastens, wobei das Drehgestell (14) einen vorderen Satz und einen hinteren Satz linker und rechter Räder (46) zum Rollen auf einer linken beziehungsweise einer rechten Schienen einer Schienenbahn (1) und einen vorderen Satz und einen hinteren Satz linker und rechter Lager (48) zum Führen des vorderen Satzes beziehungsweise des hinteren Satzes linker und rechter Räder (44) umfasst,

- wobei sich die Türöffnung (34) wenigstens teilweise zwischen einer vorderen vertikalen Querebene (400), die eine Rotationsachse (300) des vorderen Satzes linker und rechter Räder (46) enthält, und einer hinteren vertikalen Querebene (400) befindet, die eine hintere Rotationsachse (300) des hinteren Satzes linker und rechter Räder (46) enthält,

dadurch gekennzeichnet, dass:

- sich der vordere und der hintere Satz linker und rechter Lager (48) jeweils zwischen den linken und rechten Rädern (46) des vorderen beziehungsweise des hinteren Satzes linker und rechter Räder befindet, und

- sich die innere Stufe (42) und die äußerliche Zugangsstufe (62) in der eingefahrenen Position quer außerhalb des Drehgestells befinden und sich die äußerliche Zugangsstufe (62) in der eingefahrenen Position unterhalb der inneren Stufe (42) des Vorraums (36) befindet und die äußerliche Zugangsstufe bei einer Verschiebung zwischen der eingefahrenen Position und der vorstehenden Position translatorisch geführt wird.

2. Personenwagen (10) nach Anspruch 1, wobei die äußerliche Zugangsstufe (62) in der eingefahrenen Position niedriger als ein oberes Ende der Räder (46) des vorderen und des hinteren Satzes der linken und der rechten Räder (46) ist.

3. Personenwagen (10) nach einem der vorhergehenden Ansprüche, wobei die äußerliche Zugangsstufe (62) so geführt ist, um parallel zu einer vertikalen Querebene zwischen der eingefahrenen Position und der vorstehenden Position zu bleiben.

4. Personenwagen (10) nach einem der vorhergehenden Ansprüche, der ferner einen Aktuator zum Bewegen der äußerlichen Zugangsstufe (62) aus der eingefahrenen Position in eine beliebige von mehreren Betriebspositionen zwischen der eingefahrenen Position und der vorstehenden Position und zum Halten der äußerlichen Zugangsstufe (62) in den Betriebspositionen umfasst.

5. Personenwagen (10) nach Anspruch 4, der ferner mit einem Sensor zum Erfassen einer Position eines Bahnsteigs oder einer Berührung zwischen der äußerlichen Zugangsstufe (62) und dem Bahnsteig oder einer Nähe der äußerlichen Zugangsstufe (62) zu dem Bahnsteig und eine Steuervorrichtung zum Steuern des Aktuators basierend auf einem Signal des Sensors versehen ist.

6. Personenwagen (10) nach einem der vorhergehenden Ansprüche, wobei das Drehgestell (14) einen Drehgestellrahmen (44), eine Primäraufhängung (50) zwischen dem vorderen und dem hinteren Satz linker und rechter Lager (48) und dem Drehgestellrahmen (44) und eine Sekundäraufhängung (51) zwischen dem Drehgestellrahmen (44) und dem Wagenkasten (12) umfasst, und die Sekundäraufhängung (51) einen Satz linker und rechter vertikaler Federn (52) umfasst.

7. Personenwagen (10) nach Anspruch 6, wobei sich ein Schwerpunkt (60) einer Aufstandsfläche des Satzes linker und rechter vertikaler Federn (52) auf einer horizontalen Ebene wenigstens dann innerhalb eines Rechtecks (200) befindet, das tangential zu den Aufstandsflächen der Sätze linker und rechter Räder (46) ist, wenn der Personenwagen auf einer horizontalen geraden Bahn (1) stationär ist.

8. Personenwagen (10) nach einem der Ansprüche 6 bis 7, wobei der Drehgestellrahmen (44) einen Satz linker und rechter Längsträger (56), die sich zwischen den linken und den rechten Rädern (46) jedes der Sätze linker und rechter Räder (46) befinden, und wenigstens einen Querträger (48) umfasst, der mit dem Satz linker und rechter Längsträger (56) einstückig ist, und die Primäraufhängung (50) die Sätze linker und rechter Lager (48) mit den linken beziehungsweise den rechten Längsträgern (56) verbindet.

9. Personenwagen (10) nach einem der vorhergehenden Ansprüche, wobei die innere Stufe (42) niedriger als ein oberes Ende der Räder (46) des vorderen und des hinteren Satzes der linken und rechten Räder (46) ist.

10. Personenwagen (10) nach einem der vorhergehenden Ansprüche, wobei die Seitentür (38) eine zweiflügelige Seitentür ist.

11. Personenwagen (10) nach einem der vorhergehenden Ansprüche, wobei der Wagenkasten (12) ein Unterdeck (28) und ein Oberdeck (30) aufweist und der Boden (40) des Vorraums (36) auf einem mittleren Niveau zwischen dem Unterdeck (30) und dem Oberdeck (30) liegt.

12. Personenwagen (10) nach einem der Ansprüche 1 bis 10, wobei sich das Drehgestell (14) in Längsrichtung zwischen zwei Längsenden (22) des Wagenkastens (12) befindet.

13. Personenwagen (10) nach einem der Ansprüche 1 bis 10, wobei das Drehgestell (14) von einem Längsende (22) des Wagenkastens (12) vorsteht.

Revendications

1. Voiture de voyageurs (10) destinée au transport ferroviaire, la voiture de voyageurs (10) comprenant :

- une carrosserie de voiture (12), la carrosserie de voiture étant pourvue d'un vestibule (36), au moins une entrée de porte latérale (34) sur un côté gauche ou droit de la carrosserie de voiture (12) permettant de monter et de descendre du vestibule (36), et une porte latérale (38) permettant de fermer l'entrée de porte latérale (34), le vestibule (36) comprenant un plancher (40) et au moins une marche intérieure (42), la marche intérieure (42) étant plus basse que le plancher (40), la marche intérieure (42) étant située au niveau de l'entrée de porte latérale (34), entre le plancher (40) et la porte latérale (38) dans la position fermée et la carrosserie de voiture étant en outre pourvue d'une marche d'accès externe (62) mobile dans une direction transversale de la voiture de voyageurs (100) entre une position escamotée et au moins une position saillante, la marche d'accès externe (62) dans la position saillante étant plus basse que la marche intérieure (42) et s'étendant au moins partiellement devant l'entrée de porte latérale (34), et

- au moins un bogie (14) permettant de soutenir la carrosserie de voiture, le bogie (14) comprenant un ensemble avant et un ensemble arrière de roues gauche et droite (46) permettant de rouler sur des rails gauche et droit d'une voie ferrée (1), respectivement, et un ensemble avant et un ensemble arrière de paliers gauche et droit (48) permettant de guider l'ensemble avant et l'ensemble arrière de roues gauche et droite (44), respectivement,

- l'entrée de porte (34) étant située au moins partiellement entre un plan transversal vertical avant (400) contenant un axe de révolution (300) de l'ensemble avant de roues gauche et droite (46) et un plan transversal vertical arrière (400) contenant un axe de révolution arrière (300) de l'ensemble arrière de roues gauche et droite (46),

caractérisée en ce que :

- les ensembles avant et arrière de paliers gauche et droit (48) sont situés entre les roues gauche et droite (46) des ensembles avant et arrière de roues gauche et droite, respectivement, et

- la marche intérieure (42) et la marche d'accès externe (62) dans la position escamotée sont situées transversalement vers l'extérieur du bogie et la marche d'accès externe (62) dans la position escamotée est située en dessous de la marche intérieure (42) du vestibule (36) et la marche d'accès externe est guidée en translation entre la position escamotée et la position saillante.

2. Voiture de voyageurs (10) selon la revendication 1, dans laquelle la marche d'accès externe (62) dans la position escamotée est plus basse qu'une extrémité supérieure des roues (46) des ensembles avant et arrière de roues gauche et droite (46).

3. Voiture de voyageurs (10) selon l'une quelconque des revendications précédentes, dans laquelle la marche d'accès externe (62) est guidée de manière à rester parallèle à un plan vertical transversal entre la position escamotée et la position saillante.

4. Voiture de voyageurs (10) selon l'une quelconque des revendications précédentes, comprenant en outre un actionneur permettant de déplacer la marche d'accès externe (62) de la position escamotée à l'une quelconque d'une pluralité de positions fonctionnelles entre la position escamotée et la position saillante et de maintenir la marche d'accès externe (62) dans lesdites positions fonctionnelles.

5. Voiture de voyageurs (10) selon la revendication 4, pourvue en outre d'un capteur permettant de détecter une position d'une plate-forme ou un contact entre la marche d'accès externe (62) et la plate-forme ou une proximité de la marche d'accès externe (62) par rapport à la plate-forme, et d'un dispositif de commande permettant de commander l'actionneur sur la base d'un signal du capteur.

6. Voiture de voyageurs (10) selon l'une quelconque des revendications précédentes, dans laquelle le bogie (14) comprend un châssis de bogie (44), une suspension primaire (50) entre les ensembles avant et arrière de paliers gauche et droit (48) et le châssis de bogie (44) et une suspension secondaire (51) entre le châssis de bogie (44) et la carrosserie de voiture (12), et la suspension secondaire (51) comprend un ensemble de ressorts verticaux gauche et droit (52).

7. Voiture de voyageurs (10) selon la revendication 6, dans laquelle un barycentre (60) d'une empreinte de l'ensemble de ressorts verticaux gauche et droit (52) sur un plan horizontal est situé dans un rectangle (200) tangent aux empreintes des ensembles de roues gauche et droite (46) au moins lorsque la voiture de voyageurs est à l'arrêt sur une voie rectiligne horizontale (1).

8. Voiture de voyageurs (10) selon l'une quelconque des revendications 6 à 7, dans laquelle le châssis de bogie (44) comprend un ensemble de poutres longitudinales gauche et droite (56) situées entre les roues gauche et droite (46) de chacun des ensembles de roues gauche et droite (46) et au moins une poutre transversale (48) solidaire de l'ensemble de poutres longitudinales gauche et droite (56), et la suspension primaire (50) relie les ensembles de paliers gauche et droit (48) aux poutres longitudinales gauche et droite (56), respectivement.

9. Voiture de voyageurs (10) selon l'une quelconque des revendications précédentes, dans laquelle la marche intérieure (42) est plus basse qu'une extrémité supérieure des roues (46) des ensembles avant et arrière des roues gauche et droite (46).

10. Voiture de voyageurs (10) selon l'une quelconque des revendications précédentes, dans laquelle la porte latérale (38) est une porte latérale à double battant.

11. Voiture de voyageurs (10) selon l'une quelconque des revendications précédentes, dans laquelle la carrosserie de voiture (12) a un pont inférieur (28) et un pont supérieur (30) et le plancher (40) du vestibule (36) est à un niveau intermédiaire entre le pont inférieur (30) et le pont supérieur (30).

12. Voiture de voyageurs (10) selon l'une quelconque des revendications 1 à 10, dans laquelle le bogie (14) est situé longitudinalement entre deux extrémités longitudinales (22) de la carrosserie de voiture (12).

13. Voiture de voyageurs (10) selon l'une quelconque des revendications 1 à 10, dans laquelle le bogie (14) fait saillie depuis une extrémité longitudinale (22) de la carrosserie de voiture (12).

Drawing