EP3674168A1 - Self-locking device for moving a step of a transport vehicle, step and vehicle equipped in this way - Google Patents

Self-locking device for moving a step of a transport vehicle, step and vehicle equipped in this way Download PDF

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Publication number
EP3674168A1
EP3674168A1 EP19215473.0A EP19215473A EP3674168A1 EP 3674168 A1 EP3674168 A1 EP 3674168A1 EP 19215473 A EP19215473 A EP 19215473A EP 3674168 A1 EP3674168 A1 EP 3674168A1
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EP
European Patent Office
Prior art keywords
connecting rod
transmission assembly
deformable means
axis
movable member
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Granted
Application number
EP19215473.0A
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German (de)
French (fr)
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EP3674168B1 (en
Inventor
Romain Dubreuil
Christophe Proust
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Faiveley Transport Tours SAS
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Faiveley Transport Tours SAS
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Publication of EP3674168A1 publication Critical patent/EP3674168A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D23/00—Construction of steps for railway vehicles
    • B61D23/02—Folding steps for railway vehicles, e.g. hand or mechanically actuated

Definitions

  • the present invention relates to a self-locking drive device for a running board belonging to a transport vehicle, a running board equipped with such a driving device, as well as a transport vehicle comprising at least one such running board.
  • the present invention finds its application to transport vehicles, in particular of the train, tram, metro, trolleybus or bus type. It targets more specifically, but not exclusively, trains, in particular regional trains.
  • a step allows, in the lowered position of the step that equips it, to have a support located at an intermediate height between the platform and the threshold of the vehicle access opening.
  • Such a step also finds its utility, in the case where the platform is located at a significant distance from the access opening, in the horizontal direction.
  • the invention relates more particularly to the running boards, of the folding type, in particular of the rotary type.
  • the step equipping this step is movable between two positions, namely a position of use in which it extends horizontally, in order to allow the passengers to climb, as well as a folded position in which is retracted at near the cash register. In its retracted position, the step does not protrude outside the size of the vehicle when the latter is moving.
  • Such a folding step is equipped with a drive device, allowing the movement of the step between the aforementioned functional positions.
  • this drive device 201 comprises a rotary motor 210, a crankpin 220 mounted on the axis of this motor, a connecting rod 230 which is moved by the crankpin, as well as a set of link 280 driven by this connecting rod.
  • This connection assembly then directly actuates the step, so as to move it.
  • Such a drive device includes a step locking function 300, in its retracted position.
  • the axis of articulation of the connecting rod on the crankpin is located for example above the right, connecting the axis of the motor and the axis of articulation of the connecting rod on the connection assembly.
  • the connecting rod is then moved further, so that its axis is then located below the aforementioned straight line, while the step is slightly displaced downwards. Under these conditions, an arcing of the rod occurs, which leads to a locking of the step. In these conditions, it is impossible to move this step, except to actuate the drive again.
  • an objective of the present invention is to remedy, at least partially, the drawbacks of the prior art mentioned above, in particular to offer a compact step.
  • Another object of the invention is to provide a self-locking drive device for a step, which allows reliable locking of the step of this step, while ensuring that this step does not protrude outside the overall size of the vehicle. .
  • Another object of the invention is to provide such a self-locking drive device, which has a structure generally close to that used in the prior art, so that it does not involve any significant additional cost.
  • a self-locking drive device (1) for the step (1, 100) of a transport vehicle, in particular of the train, tramway, metro type. , bus or even trolleybus said step comprising a step (100) defining a bearing surface (101) for the foot of a user, this step (100) being movable between an extreme high position, or raised position, in which it comes into substantial abutment against the body of the vehicle, and an extreme low position, or lowered position, in which it allows a user to rest on the bearing surface
  • this training device comprising a rotary motor (10) a transmission assembly (20, 30, 80) able to be moved under the effect of the rotation of the motor (10) and able to activate the movement of the step
  • this drive device being characterized in that said transmission assembly is provided with elastically deformable means (72), allowing said transmission assembly to occupy a locked position when the step occupies said extreme high position, said locked position not requiring a prior angular overtravel of the step
  • the invention provides, thanks to the use of elastically deformable means equipping the transmission assembly, that the step can be locked reliably, in its extreme high position. Consequently, this step does not protrude outside the overall size of the vehicle, while ensuring satisfactory safety.
  • the invention overcomes the prior angular overtravel of walking, which involves the prior art. As explained above, this overtravel comes from the fact that it is necessary, in the known running boards, to first access an intermediate position, namely an unlocked extreme high position of the step, before lowering this slightly last to its locked position. By comparison, the invention allows direct access to an extreme high locked position, through the use of deformable means, without having to adopt an intermediate position.
  • the invention overcomes the drawbacks explained above, while retaining the same functionality as in the prior art.
  • the drive device according to the invention incorporates a majority of mechanical elements, which are similar to those used in the prior art.
  • the invention also relates to a step for a transport vehicle, in particular of the train, tram, metro, bus or even trolleybus type, this step comprising a step (100) defining a bearing surface (101) for the foot of a user, this step being movable between an extreme high position, called the raised position, in which it is retracted in the vicinity of the vehicle body, as well as an extreme position low, known as the lowered position, in which it allows a user to rest on the bearing surface, a drive device (1) for this step, capable of moving this step between its raised position and its lowered position, this drive device being as defined above.
  • the invention also relates to a transport vehicle, in particular of the train, tram, metro, bus or even trolley bus type, comprising at least one step as defined above.
  • the step according to the invention essentially comprises a folding step, designated as a whole by the reference 100, as well as a self-locking drive device for this step, which is generally designated by the reference 1. Furthermore, this running board comprises a box 2, intended for the reception of most of the constituent elements of the drive device, as will be detailed below. Note that on the Figures 1 and 2 , the drive is largely hidden.
  • the upper surface 101 of the step defines a bearing surface, allowing a user to put his foot.
  • the inner edge 102 of the step is articulated on the body of a transport vehicle, which is not shown on the Figures 1 and 2 .
  • this edge 102 is mounted on bearings 150, respectively secured to the box and the aforementioned box 2.
  • the step 100 can be produced in the form of a hollow body, the internal volume of which allows the end of an actuating lever to be received, belonging to the drive device which will be described in more detail below.
  • the step is equipped with a spar 104, received in the hollow body, which is equipped with rollers 106 at its two ends. These rollers are journalled in shrouds 152, articulated on uprights 154 integral with the body.
  • the mechanical elements described in the two paragraphs above, are of a type known per se so that they will not be explained in more detail. They can be replaced by mechanical elements of different structures but of similar functions, without departing from the scope of the invention.
  • the drive device 1 essentially comprises a motor 10, a crank pin 20, a connecting rod 30 equipped with elastic means, as well as a connection assembly 80.
  • the motor 10, of type known in itself, is a rotary motor mounted on the chassis by any suitable fixing means.
  • the crank pin 20, also of the conventional type, is secured to the motor output shaft by any suitable means.
  • connection assembly 80 firstly comprises a rod 82, articulated on the rod 30. There is also provided a shaft 84, whose main axis A84 extends parallel to that of the engine.
  • the link 82 and the shaft 84 are mutually integral, so that they do not have a degree of mutual freedom. To this end, all appropriate conventional means will be used, for example a key 85 as in the example illustrated.
  • connection assembly 80 is further equipped with a lever 86, mounted on the shaft 84. These two parts are mutually integral, namely that they do not have a degree of mutual freedom. To this end, a clamping ring 88 is used in the example illustrated.
  • the free end of the lever 86, opposite the shaft, is provided with rollers 89 received in the hollow body of the step. In a manner known per se, these rollers 89 are able to bear respectively against the walls of this hollow body, so as to induce the displacement of the step respectively upwards and downwards.
  • This connecting rod which constitutes an essential element of the invention, will now be detailed.
  • This connecting rod comprises a body 40, as well as a movable member 60 capable of moving relative to the body along the longitudinal axis of the connecting rod.
  • the body 40 firstly comprises a base 42, articulated on the crankpin around an axis denoted A40.
  • This base is fixed to the crankpin by any appropriate means, in particular using a radial ball joint. Contrary to its articulation on the crankpin, this base forms a clearance 44 for the movable member.
  • a stud 46 projecting axially from the seat, defines a bearing surface for elastic means which will be explained in the following.
  • the base 42 is extended, opposite its articulation, by a peripheral shaft 48, threaded at its end. The latter receives a cover 50, forming a nut, which is screwed onto the barrel 48 while being hollowed out with a central opening 52.
  • the movable member 60 firstly comprises a piston 62, extending through the aforementioned opening 52.
  • This piston 62 is articulated on the link 82, around an axis denoted A60.
  • This movable member is fixed to the link by any appropriate means, creating a pivot connection.
  • the two articulation axes of the connecting rod, A40 and A60 respectively, are mutually parallel while also being parallel to the geometric axis of the engine A10.
  • the piston 62 is extended, opposite its articulation axis, by a neck 64.
  • This piston and this neck define a peripheral shoulder 66, intended to bear against the cover 50.
  • the free end 68 of the neck 64 is able to move axially towards the clearance 44 of the base.
  • the housing delimited by the interior walls of the collar 66.
  • This housing 70 allows the reception of deformable means, in accordance with the invention.
  • deformable means 72 are interposed between the stud 46 and the bottom 71 of the housing 70.
  • these deformable means consist of a stack of spring washers, of a type known per se.
  • a person skilled in the art can use other types of elastic means.
  • F1 the return force generated by the elastic means 72
  • F2 the axial force exerted by the link 82 on the rod 30.
  • the elastic means tend to return the movable member opposite the body, so that the shoulder 66 bears against the cover 50.
  • the connecting rod 30 then has a so-called nominal length, denoted L1, which corresponds to its normal operation.
  • the link tends to push the movable member towards the body, so that the free end 68 of the neck is moved in translation towards the clearance 44.
  • the length L2 of the connecting rod is reduced compared to its nominal length above.
  • the difference between L2 and L1, when L2 corresponds to the minimum stroke of the movable member relative to the body, is typically of the order of a few millimeters.
  • the running board further comprises a cam, generally designated by the reference 90, which is mounted on the shaft 12 of the engine.
  • C90 the center of this cam, which is located on the geometric axis of the engine.
  • this cam 90 is asymmetrical in nature so that it delimits a bulged portion 91, as well as a thinned portion 92.
  • this cam comprises a so-called active surface 93 formed by a cylinder portion whose axis coincides with that A10 of the engine.
  • This surface 93 which delimits the swollen portion 91, is bordered by two lines 94 and 95, from which extend different flats, delimiting the thinned portion 92.
  • the active surface 93 provides a blocking function with respect to the transmission assembly.
  • the shaft 84 supports a locking rod 98, intended to cooperate with the locking surface 93 mentioned above.
  • This rod 98 and the shaft 84 are mutually integral by embedding, so that they do not have a degree of mutual freedom.
  • the free end of the rod, opposite the shaft, receives a roller 99 intended to roll against the abovementioned blocking surface 93.
  • the box 2 has a substantially parallelepiped shape.
  • 3 and 4 its opposite walls, respectively upper and lower, as well as 5 and 6 its opposite side walls.
  • 7 its so-called external front wall, with reference to the passenger compartment of the vehicle, as well as 8 its so-called internal front wall.
  • the side wall 5 is hollowed out with a notch 9, through which the shaft 84 extends.
  • the outer wall 7 of the box does not protrude relative to the step in its raised position. This is advantageous in terms of compactness, because this box is not located outside the overall size of the vehicle.
  • this template is illustrated by a vertical line G made in dashed lines.
  • the step 100 is in its lowered position, namely that it allows support for the user.
  • the axis A40 of articulation of the body 40 is located opposite the axis A84, relative to the axis A10 of the engine. If you now wish to raise the step, it is to activate the motor in a first direction, so that the crankpin is rotated according to the arrow f1 illustrated on the Figures 11 and 12 . This then causes the corresponding displacement of the rod 82, which in turn induces the pivoting of the connection assembly. The rollers of the lever 86 then bear against the upper wall of the hollow body constituting the step so as to raise the latter, as shown by arrow F100 on the figures 10 to 12 .
  • the A40 axis is then aligned on the right D, as shown by this same figure 14 . Then, if the rotation of the motor is continued, this axis A40 passes below this same straight line, as shown in the figure 15 . There is then bracing of the rod 30, assisted by the spring washers 72 working in compression. In this configuration, the surface 93 of the cam 90 abuts against the roller 99 of the rod 98, as shown in the figure 16 . Consequently the rod 98 is immobilized, which is materialized by the crossed arrow F98, which also ensures the overall immobilization of the drive assembly.
  • the step is then locked, namely that the rod 30 cannot enter into rotation under the effect of an external action, in particular under the effect of a force exerted on the step and directed downward, except at operate the motor in the opposite direction to that described above.
  • the deformation of the spring washers 72 allows the passage between the unlocked intermediate position, illustrated in figure 13 , and the locked position of the figure 15 . Between these two positions, part of the transmission assembly, namely the crank pin 20 and the connecting rod 30, is mobile while the connection assembly 80 is substantially stationary.
  • the locking cam 90 has specific advantages. Indeed, it gives satisfactory stability to the transmission assembly, in the locked position of the latter.
  • this cam allows the locked position not to be dependent on the elasticity of the connecting rod 30 since the cam is in direct contact, via the roller 99, with the connecting rod 82 actuating the step 100. Consequently, the invention makes it possible to precisely overcome any untimely movement of the step, from its extreme high position.
  • FIGS. 22 and 23 illustrate the operation of the connecting rod 230 of the prior art.
  • this known connecting rod 230 is rigid, namely that its length is substantially invariant.
  • the step 300 can reach its extreme high position only when the axis of articulation of the connecting rod on the crankpin, denoted A240, is located on the right D.
  • this connecting rod is not locked stably. Consequently, if it is desired that this connecting rod adopts a locking position, it is necessary to continue to operate the motor, so that the aforementioned axis A240 is located below the straight line D.
  • the step 300 has undergone a downward tilt relative to its extreme high position, according to arrow F "300, so that it necessarily protrudes outside the overall size of the vehicle.

Abstract

Ce dispositif d'entraînement comprend un moteur rotatif (10), ainsi qu'un ensemble de transmission (20, 30, 80) apte à être déplacé sous l'effet de la rotation du moteur (10) et apte à activer le déplacement de la marche.Selon l'invention l'ensemble de transmission est pourvu de moyens élastiquement déformables (72), permettant à cet ensemble de transmission d'occuper une position verrouillée lorsque la marche occupe sa position extrême haute, cette position verrouillée ne nécessitant pas une surcourse angulaire préalable de la marche.L'invention prévoit, grâce à l'utilisation de moyens élastiquement déformables équipant l'ensemble de transmission, que la marche peut être verrouillée de manière fiable, dans sa position extrême haute. Par conséquent, cette marche ne fait pas saillie en dehors du gabarit global du véhicule, tout en garantissant une sécurité satisfaisante. L'invention permet donc de s'affranchir de la surcourse angulaire préalable de la marche, qu'implique l'art antérieur. Par comparaison, l'invention autorise un accès direct à une position extrême haute verrouillée, grâce à l'utilisation des moyens déformables, sans avoir à adopter une position intermédiaire.This drive device comprises a rotary motor (10), as well as a transmission assembly (20, 30, 80) able to be moved under the effect of the rotation of the motor (10) and able to activate the movement of According to the invention, the transmission assembly is provided with elastically deformable means (72), allowing this transmission assembly to occupy a locked position when the step occupies its extreme high position, this locked position not requiring a Prior angular overtravel of the step. The invention provides, through the use of elastically deformable means equipping the transmission assembly, that the step can be locked reliably in its extreme high position. Consequently, this step does not protrude outside the overall size of the vehicle, while ensuring satisfactory safety. The invention therefore makes it possible to overcome the prior angular overtravel of walking, which involves the prior art. By comparison, the invention allows direct access to an extreme high locked position, through the use of deformable means, without having to adopt an intermediate position.

Description

Domaine technique de l'inventionTechnical field of the invention

La présente invention concerne un dispositif d'entraînement autoverrouillant pour un marchepied appartenant à un véhicule de transport, un marchepied équipé d'un tel dispositif d'entraînement, ainsi qu'un véhicule de transport comprenant au moins un tel marchepied. La présente invention trouve son application à des véhicules de transport, notamment de type train, tramway, métro, trolleybus ou encore bus. Elle vise plus spécifiquement, mais non exclusivement, les trains, en particulier les trains régionaux.The present invention relates to a self-locking drive device for a running board belonging to a transport vehicle, a running board equipped with such a driving device, as well as a transport vehicle comprising at least one such running board. The present invention finds its application to transport vehicles, in particular of the train, tram, metro, trolleybus or bus type. It targets more specifically, but not exclusively, trains, in particular regional trains.

Etat de la techniqueState of the art

De manière classique certains véhicules de transport sont équipés de marchepieds, visant à faciliter l'accès des voyageurs. En effet les quais, destinés à l'arrêt des véhicules ainsi qu'à la montée et à la descente des voyageurs, se situent souvent à des hauteurs mutuellement différentes, lesquelles sont inférieures à celles des planchers des véhicules. Par conséquent un marchepied permet, dans la position abaissée de la marche qui l'équipe, de disposer d'un appui situé à une hauteur intermédiaire entre le quai et le seuil de l'ouverture d'accès au véhicule. Un tel marchepied trouve également son utilité, dans le cas où le quai est situé à une distance significative de l'ouverture d'accès, selon la direction horizontale.Conventionally, some transport vehicles are equipped with running boards, intended to facilitate access for travelers. Indeed, the platforms, intended for stopping vehicles as well as for getting in and out of travelers, are often located at mutually different heights, which are lower than those of the floors of vehicles. Therefore a step allows, in the lowered position of the step that equips it, to have a support located at an intermediate height between the platform and the threshold of the vehicle access opening. Such a step also finds its utility, in the case where the platform is located at a significant distance from the access opening, in the horizontal direction.

L'invention vise plus particulièrement les marchepieds, de type repliable, en particulier de type rotatif. Dans cet esprit la marche équipant ce marchepied est mobile entre deux positions, à savoir une position d'utilisation dans laquelle elle s'étend de manière horizontale, afin de permettre la montée des voyageurs, ainsi qu'une position repliée dans laquelle est escamotée au voisinage de la caisse. Dans sa position escamotée, la marche ne fait pas saillie hors du gabarit du véhicule lors du déplacement de ce dernier. Un tel marchepied repliable est équipé d'un dispositif d'entraînement, permettant le déplacement de la marche entre les positions fonctionnelles précitées.The invention relates more particularly to the running boards, of the folding type, in particular of the rotary type. In this spirit, the step equipping this step is movable between two positions, namely a position of use in which it extends horizontally, in order to allow the passengers to climb, as well as a folded position in which is retracted at near the cash register. In its retracted position, the step does not protrude outside the size of the vehicle when the latter is moving. Such a folding step is equipped with a drive device, allowing the movement of the step between the aforementioned functional positions.

De manière classique, comme illustré sur la figure 21 annexée, ce dispositif d'entraînement 201 comprend un moteur rotatif 210, un maneton 220 monté sur l'axe de ce moteur, une bielle 230 qui est déplacée par le maneton, ainsi qu'un ensemble de liaison 280 mû par cette bielle. Cet ensemble de liaison actionne alors directement la marche, de manière à la déplacer.Conventionally, as illustrated in the figure 21 annexed, this drive device 201 comprises a rotary motor 210, a crankpin 220 mounted on the axis of this motor, a connecting rod 230 which is moved by the crankpin, as well as a set of link 280 driven by this connecting rod. This connection assembly then directly actuates the step, so as to move it.

Un tel dispositif d'entraînement inclut une fonction de verrouillage de la marche 300, dans sa position escamotée. À cet effet, lors de la phase de déplacement de la marche vers le haut, l'axe d'articulation de la bielle sur le maneton se situe par exemple au-dessus de la droite, reliant l'axe du moteur et l'axe d'articulation de la bielle sur l'ensemble de liaison. Lorsque ces trois axes sont alignés, la course axiale de la bielle est maximale et la marche se trouve dans sa position extrême haute. On prévoit alors de déplacer encore la bielle, de sorte que son axe se situe alors au-dessous de la droite précitée, alors que la marche est légèrement déplacée vers le bas. Dans ces conditions, il se produit un arc-boutement de la bielle, qui conduit à un verrouillage de la marche. Dans ces conditions, il est impossible de déplacer cette marche, sauf à actionner à nouveau le dispositif d'entraînement.Such a drive device includes a step locking function 300, in its retracted position. To this end, during the phase of displacement of the upward step, the axis of articulation of the connecting rod on the crankpin is located for example above the right, connecting the axis of the motor and the axis of articulation of the connecting rod on the connection assembly. When these three axes are aligned, the axial stroke of the connecting rod is maximum and the step is in its extreme high position. Provision is then made to move the connecting rod further, so that its axis is then located below the aforementioned straight line, while the step is slightly displaced downwards. Under these conditions, an arcing of the rod occurs, which leads to a locking of the step. In these conditions, it is impossible to move this step, except to actuate the drive again.

Cette solution connue présente cependant certains inconvénients. En effet, dans sa position verrouillée, la marche du marchepied fait saillie, en dehors du gabarit du véhicule. En d'autres termes le volume utile du véhicule, permettant notamment d'accueillir les passagers, se trouverait réduit de manière intempestive si, pour éviter cette saillie, la marche était repliée jusqu'à une position relevée qui l'éloignerait du gabarit.This known solution however has certain drawbacks. Indeed, in its locked position, the step of the step protrudes, outside the size of the vehicle. In other words, the useful volume of the vehicle, making it possible in particular to accommodate passengers, would be inadvertently reduced if, to avoid this protrusion, the step was folded up to a raised position which would move it away from the template.

On connaît par ailleurs, de DE 34 09 257 , un système permettant de détecter la présence éventuelle de voyageurs, sur un marchepied. Dans le cas où une telle présence est identifiée, la mise en oeuvre de ce marchepied est momentanément interdite. Ce document ne décrit cependant pas un dispositif d'entraînement auto verrouillant pour un marchepied, en particulier faisant intervenir un arc-boutement de son ensemble de transmission.We also know DE 34 09 257 , a system for detecting the possible presence of travelers, on a running board. In the event that such a presence is identified, the use of this step is temporarily prohibited. This document does not, however, describe a self-locking drive device for a running board, in particular involving a bracing of its transmission assembly.

Compte tenu de ce qui précède, un objectif de la présente invention est de remédier, au moins partiellement, aux inconvénients de l'art antérieur évoqués ci-dessus, notamment d'offrir un marchepied compact.In view of the above, an objective of the present invention is to remedy, at least partially, the drawbacks of the prior art mentioned above, in particular to offer a compact step.

Un autre objectif de l'invention est de proposer un dispositif d'entraînement autoverrouillant d'un marchepied, qui autorise un verrouillage fiable de la marche de ce marchepied, tout en garantissant que cette marche ne fait pas saillie en dehors du gabarit global du véhicule.Another object of the invention is to provide a self-locking drive device for a step, which allows reliable locking of the step of this step, while ensuring that this step does not protrude outside the overall size of the vehicle. .

Un autre objectif de l'invention est de proposer un tel dispositif d'entraînement autoverrouillant, qui présente une structure globalement voisine de celle utilisée dans l'état de la technique, de sorte qu'elle n'implique pas de surcoût significatif.Another object of the invention is to provide such a self-locking drive device, which has a structure generally close to that used in the prior art, so that it does not involve any significant additional cost.

Objets de l'inventionObjects of the invention

Selon l'invention, au moins un des objectifs ci-dessus est atteint au moyen d'un dispositif d'entraînement autoverrouillant (1) pour marchepied (1, 100) d'un véhicule de transport, notamment du type train, tramway, métro, bus ou encore trolleybus, ledit marchepied comprenant une marche (100) définissant une surface d'appui (101) pour le pied d'un utilisateur, cette marche (100) étant mobile entre une position extrême haute, ou position relevée, dans laquelle elle vient sensiblement en butée contre la caisse du véhicule, et une position extrême basse, ou position abaissée, dans laquelle elle permet à un utilisateur de prendre appui sur la surface d'appui,
ce dispositif d'entraînement comprenant
un moteur rotatif (10)
un ensemble de transmission (20, 30, 80) apte à être déplacé sous l'effet de la rotation du moteur (10) et apte à activer le déplacement de la marche
ce dispositif d'entraînement étant caractérisé en ce que ledit ensemble de transmission est pourvu de moyens élastiquement déformables (72), permettant audit ensemble de transmission d'occuper une position verrouillée lorsque la marche occupe ladite position extrême haute, ladite position verrouillée ne nécessitant pas une surcourse angulaire préalable de la marche.According to the invention, at least one of the above objectives is achieved by means of a self-locking drive device (1) for the step (1, 100) of a transport vehicle, in particular of the train, tramway, metro type. , bus or even trolleybus, said step comprising a step (100) defining a bearing surface (101) for the foot of a user, this step (100) being movable between an extreme high position, or raised position, in which it comes into substantial abutment against the body of the vehicle, and an extreme low position, or lowered position, in which it allows a user to rest on the bearing surface,
this training device comprising
a rotary motor (10)
a transmission assembly (20, 30, 80) able to be moved under the effect of the rotation of the motor (10) and able to activate the movement of the step
this drive device being characterized in that said transmission assembly is provided with elastically deformable means (72), allowing said transmission assembly to occupy a locked position when the step occupies said extreme high position, said locked position not requiring a prior angular overtravel of the step.

On notera tout d'abord qu'il est du mérite de la Demanderesse d'avoir appréhendé l'origine des inconvénients, liés à l'utilisation des marchepieds connus tels que décrits ci-dessus. En substance la Demanderesse a identifié que, dans l'état de la technique, la marche du marchepied ne peut pas être maintenue dans sa position haute extrême, en toute sécurité. En effet, dans cette position, cette marche n'est pas verrouillée de sorte que, pour la verrouiller, il serait nécessaire de la faire basculer légèrement vers le bas, entraînant son dépassement en dehors du gabarit du véhicule.It should first of all be noted that it is to the credit of the Applicant that it has grasped the origin of the drawbacks linked to the use of the known running boards as described above. In essence, the Applicant has identified that, in the state of the art, the step of the step cannot be maintained in its extreme high position, in complete safety. Indeed, in this position, this step is not locked so that, to lock it, it would be necessary to tilt it slightly downward, causing it to protrude outside the size of the vehicle.

Au contraire l'invention prévoit, grâce à l'utilisation de moyens élastiquement déformables équipant l'ensemble de transmission, que la marche peut être verrouillée de manière fiable, dans sa position extrême haute. Par conséquent, cette marche ne fait pas saillie en dehors du gabarit global du véhicule, tout en garantissant une sécurité satisfaisante. L'invention permet de s'affranchir de la surcourse angulaire préalable de la marche, qu'implique l'art antérieur. Comme explicité ci-dessus cette surcourse provient du fait qu'il est nécessaire, dans les marchepieds connus, d'accéder tout d'abord à une position intermédiaire, à savoir une position extrême haute non verrouillée de la marche, avant de rabaisser légèrement cette dernière vers sa position verrouillée. Par comparaison, l'invention autorise un accès direct à une position extrême haute verrouillée, grâce à l'utilisation des moyens déformables, sans avoir à adopter une position intermédiaire.On the contrary, the invention provides, thanks to the use of elastically deformable means equipping the transmission assembly, that the step can be locked reliably, in its extreme high position. Consequently, this step does not protrude outside the overall size of the vehicle, while ensuring satisfactory safety. The invention overcomes the prior angular overtravel of walking, which involves the prior art. As explained above, this overtravel comes from the fact that it is necessary, in the known running boards, to first access an intermediate position, namely an unlocked extreme high position of the step, before lowering this slightly last to its locked position. By comparison, the invention allows direct access to an extreme high locked position, through the use of deformable means, without having to adopt an intermediate position.

Dans cet esprit, l'invention permet de remédier aux inconvénients explicités ci-dessus, tout en conservant les mêmes fonctionnalités que dans l'art antérieur. En particulier, le dispositif d'entraînement conforme à l'invention intègre une majorité d'éléments mécaniques, qui sont analogues à ceux utilisés dans l'art antérieur.In this spirit, the invention overcomes the drawbacks explained above, while retaining the same functionality as in the prior art. In particular, the drive device according to the invention incorporates a majority of mechanical elements, which are similar to those used in the prior art.

Selon d'autres caractéristiques de l'invention :

  • l'ensemble de transmission (20, 30, 80) est apte à occuper une position intermédiaire non verrouillée, dans la position extrême haute de la marche, au moins une partie (20, 30) de cet ensemble de transmission étant en outre mobile entre cette position intermédiaire et ladite position verrouillée, grâce à la déformation des moyens déformables (72).
  • le dispositif comprend en outre des moyens de blocage (90), propres à immobiliser l'ensemble de transmission dans sa position verrouillée, sans solliciter les moyens déformables (72) pour maintenir cette position verrouillée.
  • les moyens de blocage comprennent une came de blocage (90), montée sur l'arbre (12) du moteur (10).
  • la came de blocage comprend une portion renflée (92), définissant une surface de blocage (93) apte à bloquer l'ensemble de transmission dans sa position verrouillée.
  • la surface de blocage (93) de la came de blocage (90) est délimitée par une portion de cylindre, dont l'axe est confondu avec l'axe géométrique (A10) du moteur.
  • l'ensemble de transmission comprend
    • un maneton (20) apte à être déplacé par le moteur
    • une bielle (30) apte à être déplacée par le maneton
    • un ensemble de liaison (80) apte à être déplacé par la bielle, cet ensemble de liaison étant apte à activer le déplacement de la marche.
  • ladite bielle (30) est pourvue des moyens déformables (72), ces moyens déformables étant propres à permettre une variation significative de la dimension axiale de cette bielle.
  • le dispositif comprend en outre une tige de blocage (98), apte à coopérer avec la surface de blocage (93) de la came de blocage (90), cette tige de blocage étant solidaire de l'ensemble de liaison (80).
  • la marche est apte à occuper sa position extrême haute, lorsque l'axe A40 d'articulation de la bielle (30) sur le maneton se situe au-dessus de la droite (D) reliant en vue de côté l'axe (A10) du moteur et l'axe (A60) d'articulation de la bielle sur l'ensemble de liaison (80), ladite bielle étant apte à être comprimée de sorte que ledit axe d'articulation de la bielle sur le maneton passe au-dessous de ladite droite (D).
  • la bielle (30) comprend un corps (40), articulé sur le maneton, ainsi qu'un organe mobile (60) apte à se déplacer par rapport au corps selon la direction axiale de la bielle, cet organe mobile étant articulé sur l'ensemble de liaison (80), les moyens déformables (72) étant interposés entre les parois en regard du corps et de l'organe mobile.
  • en service, les moyens déformables tendent à repousser axialement l'organe mobile, à l'opposé du corps (40).
  • le corps (40) et l'organe mobile (60) délimitent une position axiale de butée mutuelle, correspondant à une longueur maximale de la bielle.
  • les moyens déformables (72) délimitent une position axiale correspondant à une longueur minimale de la bielle, lorsque ces moyens déformables sont entièrement comprimés.
  • le corps (40) comprend un fût (48), alors que l'organe mobile (60) comprend un col (64), le fût et le col étant aptes à coulisser mutuellement l'un au voisinage de l'autre, lors du déplacement de l'organe mobile par rapport au corps.
  • le dispositif comprend en outre un caisson (2), dans lequel sont logés tout ou partie du moteur et de l'ensemble de transmission, ledit caisson possédant une paroi frontale externe (7), opposée en service à l'habitacle du véhicule, ladite paroi externe ne faisant pas saillie au-delà de la marche (100), dans la position extrême haute de cette dernière.
According to other characteristics of the invention:
  • the transmission assembly (20, 30, 80) is able to occupy an unlocked intermediate position, in the extreme upper position of the step, at least a part (20, 30) of this transmission assembly being also movable between this intermediate position and said locked position, thanks to the deformation of the deformable means (72).
  • the device further comprises locking means (90), suitable for immobilizing the transmission assembly in its locked position, without requesting the deformable means (72) to maintain this locked position.
  • the locking means comprise a locking cam (90), mounted on the shaft (12) of the motor (10).
  • the locking cam comprises a bulged portion (92), defining a locking surface (93) capable of locking the transmission assembly in its locked position.
  • the blocking surface (93) of the blocking cam (90) is delimited by a cylinder portion, the axis of which coincides with the geometric axis (A10) of the engine.
  • transmission assembly includes
    • a crank pin (20) capable of being moved by the engine
    • a connecting rod (30) able to be moved by the crank pin
    • a connection assembly (80) capable of being moved by the connecting rod, this connection assembly being capable of activating the movement of the step.
  • said connecting rod (30) is provided with deformable means (72), these deformable means being adapted to allow a significant variation in the axial dimension of this connecting rod.
  • the device further comprises a blocking rod (98), able to cooperate with the blocking surface (93) of the blocking cam (90), this blocking rod being integral with the connection assembly (80).
  • the step is able to occupy its extreme high position, when the axis A40 of articulation of the connecting rod (30) on the crank pin is located above the right (D) connecting in side view the axis (A10) of the motor and the axis (A60) of articulation of the connecting rod on the connection assembly (80), said connecting rod being able to be compressed so that said axis of articulation of the connecting rod on the crankpin passes below from said line (D).
  • the connecting rod (30) comprises a body (40), articulated on the crankpin, as well as a movable member (60) able to move relative to the body in the axial direction of the connecting rod, this movable member being articulated on the connection assembly (80), the deformable means (72) being interposed between the walls facing the body and the movable member.
  • in use, the deformable means tend to push the movable member axially away from the body (40).
  • the body (40) and the movable member (60) define an axial position of mutual abutment, corresponding to a maximum length of the connecting rod.
  • the deformable means (72) define an axial position corresponding to a minimum length of the connecting rod, when these deformable means are fully compressed.
  • the body (40) comprises a barrel (48), while the movable member (60) comprises a neck (64), the barrel and the neck being able to slide mutually one in the vicinity of the other, during the displacement of the movable member relative to the body.
  • the device further comprises a box (2), in which are housed all or part of the engine and of the transmission assembly, said box having an external front wall (7), opposite in service to the passenger compartment of the vehicle, said external wall not projecting beyond the step (100), in the extreme high position of the latter.

Ces caractéristiques additionnelles peuvent être mises en oeuvre avec l'objet principal ci-dessus, individuellement ou en combinaisons quelconques, techniquement compatibles.These additional characteristics can be implemented with the main object above, individually or in any combination, technically compatible.

L'invention a également pour objet un marchepied pour véhicule de transport, notamment du type train, tramway, métro, bus ou encore trolleybus, ce marchepied comprenant une marche (100) définissant une surface d'appui (101) pour le pied d'un utilisateur, cette marche étant mobile entre une position extrême haute, dite position relevée, dans laquelle elle est escamotée au voisinage de la caisse du véhicule, ainsi qu'une position extrême basse, dite position abaissée, dans laquelle elle permet à un utilisateur de prendre appui sur la surface d'appui,
un dispositif d'entraînement (1) de cette marche, apte à déplacer cette marche entre sa position relevée sa position abaissée,
ce dispositif d'entraînement étant tel que défini ci-dessus.The invention also relates to a step for a transport vehicle, in particular of the train, tram, metro, bus or even trolleybus type, this step comprising a step (100) defining a bearing surface (101) for the foot of a user, this step being movable between an extreme high position, called the raised position, in which it is retracted in the vicinity of the vehicle body, as well as an extreme position low, known as the lowered position, in which it allows a user to rest on the bearing surface,
a drive device (1) for this step, capable of moving this step between its raised position and its lowered position,
this drive device being as defined above.

L'invention a également pour objet un véhicule de transport, notamment du type train, tramway, métro, bus ou encore trolleybus, comprenant au moins un marchepied tel que défini ci-dessus.The invention also relates to a transport vehicle, in particular of the train, tram, metro, bus or even trolley bus type, comprising at least one step as defined above.

Description des figuresDescription of the figures

L'invention va être décrite ci-après, en référence aux dessins annexés, donnés uniquement à titre d'exemples non limitatifs, dans lesquels :

  • Les figures 1 et 2 sont des vues en perspective, illustrant un marchepied équipé d'un dispositif d'entraînement autoverrouillant conforme à l'invention, dans des positions respectives d'ouverture et de fermeture de la marche appartenant à ce marchepied.
  • Les figures 3 et 4 sont des vues en perspective illustrant plus particulièrement, à plus grande échelle, le dispositif d'entraînement dans les positions respectives des figures 1 et 2.
  • La figure 5 est une vue en perspective, illustrant sous un angle différent ce dispositif d'entraînement.
  • La figure 6 est une vue en coupe axiale, illustrant à plus grande échelle une bielle appartenant à ce dispositif d'entraînement.
  • Les figures 7, 8 et 9 sont des vues en coupe, selon les lignes respectives 7-7, 8-8 et 9-9 de la figure 5, illustrant la marche dans sa position abaissée.
  • Les figures 10,11 et 12 sont des vues en coupe, analogues aux figures 7 à 9, illustrant cette marche dans une position partiellement relevée.
  • Les figures 13 et 14 sont des vues en coupe, selon la ligne 8-8, illustrant la marche dans sa position relevée, pour deux configurations successives d'une bielle compressible appartenant au dispositif de l'invention.
  • Les figures 15 et 16 sont des vues en coupe, respectivement selon la ligne 8-8 et la ligne 9-9, illustrant la marche dans sa position relevée, la bielle compressible étant dans une position verrouillée.
  • Les figures 17 et 18 sont des vues en coupe, respectivement selon la ligne 8-8 et la ligne 9-9, illustrant la phase initiale du déplacement de la bielle à partir de sa position verrouillée, la marche se trouvant toujours dans sa position relevée.
  • Les figures 19 et 20 sont des vues en coupe, respectivement selon la ligne 8-8 et la ligne 9-9, illustrant la phase suivante du déplacement de la bielle, avec la marche légèrement rabaissée.
  • La figure 21, précédemment commentée, est une vue en perspective illustrant un marchepied équipé d'un dispositif d'entraînement conforme à l'art antérieur.
  • Les figures 22 et 23 sont des vues schématiques, illustrant le fonctionnement d'une bielle sensiblement rigide équipant le marchepied selon l'art antérieur, tel qu'illustré à la figure 21.
The invention will be described below, with reference to the accompanying drawings, given only by way of nonlimiting examples, in which:
  • The Figures 1 and 2 are perspective views, illustrating a step equipped with a self-locking drive device according to the invention, in the respective opening and closing positions of the step belonging to this step.
  • The figures 3 and 4 are perspective views illustrating more particularly, on a larger scale, the drive device in the respective positions of the Figures 1 and 2 .
  • The figure 5 is a perspective view, illustrating from a different angle this drive device.
  • The figure 6 is an axial sectional view, illustrating on a larger scale a connecting rod belonging to this drive device.
  • The Figures 7, 8 and 9 are sectional views, along the respective lines 7-7, 8-8 and 9-9 of the figure 5 , illustrating the step in its lowered position.
  • The Figures 10, 11 and 12 are sectional views, analogous to figures 7 to 9 , illustrating this walk in a partially raised position.
  • The Figures 13 and 14 are sectional views, along line 8-8, illustrating the step in its raised position, for two successive configurations of a compressible connecting rod belonging to the device of the invention.
  • The Figures 15 and 16 are sectional views, respectively along line 8-8 and line 9-9, illustrating the step in its raised position, the compressible rod being in a locked position.
  • The Figures 17 and 18 are sectional views, respectively along line 8-8 and line 9-9, illustrating the initial phase of the movement of the connecting rod from its locked position, the step always being in its raised position.
  • The Figures 19 and 20 are sectional views, respectively along line 8-8 and line 9-9, illustrating the next phase of the displacement of the connecting rod, with the step slightly lowered.
  • The figure 21 , previously commented on, is a perspective view illustrating a step fitted with a drive device according to the prior art.
  • The figures 22 and 23 are schematic views illustrating the operation of a substantially rigid connecting rod fitted to the step according to the prior art, as illustrated in the figure 21 .

Description détailléedetailed description

Le marchepied conforme à l'invention, illustré sur les figures annexées, comprend essentiellement une marche repliable, désignée dans son ensemble par la référence 100, ainsi qu'un dispositif d'entraînement autoverrouillant de cette marche, lequel est désigné dans son ensemble par la référence 1. Par ailleurs ce marchepied comprend un caisson 2, destiné à la réception de la plupart des éléments constitutifs du dispositif d'entraînement, comme cela va être détaillé ci-dessous. On notera que, sur les figures 1 et 2, le dispositif d'entraînement est en grande partie masqué.The step according to the invention, illustrated in the appended figures, essentially comprises a folding step, designated as a whole by the reference 100, as well as a self-locking drive device for this step, which is generally designated by the reference 1. Furthermore, this running board comprises a box 2, intended for the reception of most of the constituent elements of the drive device, as will be detailed below. Note that on the Figures 1 and 2 , the drive is largely hidden.

De manière connue en soi, comme le montre notamment la figure 1, la surface supérieure 101 de la marche définit une surface d'appui, permettant à un utilisateur de poser son pied. Par ailleurs, le bord intérieur 102 de la marche est articulé sur la caisse d'un véhicule de transport, laquelle n'est pas représentée sur les figures 1 et 2. À cet effet, ce bord 102 est monté sur des paliers 150, solidaires respectivement de la caisse et du caisson 2 précité. La marche 100 peut être réalisée sous forme d'un corps creux, dont le volume intérieur permet la réception de l'extrémité d'un levier d'actionnement, appartenant au dispositif d'entraînement qui sera décrit plus en détail dans ce qui suit.In a manner known per se, as shown in particular by the figure 1 , the upper surface 101 of the step defines a bearing surface, allowing a user to put his foot. Furthermore, the inner edge 102 of the step is articulated on the body of a transport vehicle, which is not shown on the Figures 1 and 2 . To this end, this edge 102 is mounted on bearings 150, respectively secured to the box and the aforementioned box 2. The step 100 can be produced in the form of a hollow body, the internal volume of which allows the end of an actuating lever to be received, belonging to the drive device which will be described in more detail below.

La marche est équipée d'un longeron 104, reçu dans le corps creux, qui est équipé de galets 106 à ses deux extrémités. Ces galets tourillonnent dans des haubans 152, articulés sur des montants 154 solidaires de la caisse. Les éléments mécaniques, décrits dans les deux paragraphes ci-dessus, sont de type connu en soi de sorte qu'ils ne seront pas explicités plus en détail. Ils peuvent être remplacés par des éléments mécaniques de structures différentes mais de fonctions analogues, sans sortir du cadre de l'invention.The step is equipped with a spar 104, received in the hollow body, which is equipped with rollers 106 at its two ends. These rollers are journalled in shrouds 152, articulated on uprights 154 integral with the body. The mechanical elements, described in the two paragraphs above, are of a type known per se so that they will not be explained in more detail. They can be replaced by mechanical elements of different structures but of similar functions, without departing from the scope of the invention.

Comme montré sur les figures 3 à 5, le dispositif d'entraînement 1 conforme à l'invention comprend essentiellement un moteur 10, un maneton 20, une bielle 30 équipée de moyens élastiques, ainsi qu'un ensemble de liaison 80. Le moteur 10, de type connu en soi, est un moteur rotatif monté sur le châssis par tous moyens de fixation appropriés. On note 12 son arbre de sortie, ainsi que A10 son axe géométrique de rotation. Le maneton 20, également de type classique, est solidarisé sur l'arbre de sortie du moteur par tous moyens appropriés.As shown on figures 3 to 5 , the drive device 1 according to the invention essentially comprises a motor 10, a crank pin 20, a connecting rod 30 equipped with elastic means, as well as a connection assembly 80. The motor 10, of type known in itself, is a rotary motor mounted on the chassis by any suitable fixing means. We note 12 its output shaft, and A10 its geometric axis of rotation. The crank pin 20, also of the conventional type, is secured to the motor output shaft by any suitable means.

L'ensemble de liaison 80 comprend tout d'abord une biellette 82, articulée sur la bielle 30. Il est par ailleurs prévu un arbre 84, dont l'axe principal A84 s'étend parallèlement à celui du moteur. La biellette 82 et l'arbre 84 sont mutuellement solidaires, de sorte qu'ils ne possèdent pas de degré de liberté mutuelle. À cet effet, on utilisera tous moyens classiques appropriés, par exemple une clavette 85 comme dans l'exemple illustré.The connection assembly 80 firstly comprises a rod 82, articulated on the rod 30. There is also provided a shaft 84, whose main axis A84 extends parallel to that of the engine. The link 82 and the shaft 84 are mutually integral, so that they do not have a degree of mutual freedom. To this end, all appropriate conventional means will be used, for example a key 85 as in the example illustrated.

L'ensemble de liaison 80 est en outre équipé d'un levier 86, monté sur l'arbre 84. Ces deux pièces sont mutuellement solidaires, à savoir qu'elles ne possèdent pas de degré de liberté mutuelle. À cet effet, on utilise dans l'exemple illustré une bague de serrage 88. L'extrémité libre du levier 86, opposée à l'arbre, est munie de galets 89 reçus dans le corps creux de la marche. De manière connue en soi, ces galets 89 sont aptes à prendre appui respectivement contre les parois de ce corps creux, de manière à induire le déplacement de la marche respectivement vers le haut et vers le bas.The connection assembly 80 is further equipped with a lever 86, mounted on the shaft 84. These two parts are mutually integral, namely that they do not have a degree of mutual freedom. To this end, a clamping ring 88 is used in the example illustrated. The free end of the lever 86, opposite the shaft, is provided with rollers 89 received in the hollow body of the step. In a manner known per se, these rollers 89 are able to bear respectively against the walls of this hollow body, so as to induce the displacement of the step respectively upwards and downwards.

La bielle 30, qui constitue un élément essentiel de l'invention, va maintenant être détaillée. Cette bielle comprend un corps 40, ainsi qu'un organe mobile 60 susceptible de se déplacer par rapport au corps selon l'axe longitudinal de la bielle.The connecting rod 30, which constitutes an essential element of the invention, will now be detailed. This connecting rod comprises a body 40, as well as a movable member 60 capable of moving relative to the body along the longitudinal axis of the connecting rod.

Le corps 40 comprend tout d'abord une embase 42, articulée sur le maneton autour d'un axe noté A40. Cette embase est fixée sur le maneton, par tous moyens appropriés, notamment à l'aide d'une rotule radiale. À l'opposé de son articulation sur le maneton, cette embase forme un dégagement 44 pour l'organe mobile. Un plot 46, en saillie axiale par rapport au siège, définit une surface d'appui pour des moyens élastiques qui seront explicités dans ce qui suit. L'embase 42 se prolonge, à l'opposé de son articulation, par un fût périphérique 48, fileté à son extrémité. Ce dernier reçoit un capot 50, formant écrou, qui est vissé sur le fût 48 en étant creusé d'une ouverture centrale 52.The body 40 firstly comprises a base 42, articulated on the crankpin around an axis denoted A40. This base is fixed to the crankpin by any appropriate means, in particular using a radial ball joint. Contrary to its articulation on the crankpin, this base forms a clearance 44 for the movable member. A stud 46, projecting axially from the seat, defines a bearing surface for elastic means which will be explained in the following. The base 42 is extended, opposite its articulation, by a peripheral shaft 48, threaded at its end. The latter receives a cover 50, forming a nut, which is screwed onto the barrel 48 while being hollowed out with a central opening 52.

L'organe mobile 60 comprend tout d'abord un piston 62, s'étendant au travers de l'ouverture précitée 52. Ce piston 62 est articulé sur la biellette 82, autour d'un axe noté A60. Cet organe mobile est fixé sur la biellette par tous moyens appropriés, créant une liaison pivot. Les deux axes d'articulation de la bielle, respectivement A40 et A60, sont mutuellement parallèles tout en étant également parallèles à l'axe géométrique du moteur A10.The movable member 60 firstly comprises a piston 62, extending through the aforementioned opening 52. This piston 62 is articulated on the link 82, around an axis denoted A60. This movable member is fixed to the link by any appropriate means, creating a pivot connection. The two articulation axes of the connecting rod, A40 and A60 respectively, are mutually parallel while also being parallel to the geometric axis of the engine A10.

Le piston 62 est prolongé, à l'opposé de son axe d'articulation, par un col 64. Ce piston et ce col définissent un épaulement périphérique 66, destiné à prendre appui contre le capot 50. Par ailleurs, l'extrémité libre 68 du col 64 est apte à se déplacer axialement vers le dégagement 44 de l'embase. On note 70 le logement, délimité par les parois intérieures du col 66.The piston 62 is extended, opposite its articulation axis, by a neck 64. This piston and this neck define a peripheral shoulder 66, intended to bear against the cover 50. Furthermore, the free end 68 of the neck 64 is able to move axially towards the clearance 44 of the base. We note 70 the housing, delimited by the interior walls of the collar 66.

Ce logement 70 permet la réception de moyens déformables, conformes à l'invention. Ces moyens déformables 72 sont intercalés entre le plot 46 et le fond 71 du logement 70. Dans l'exemple illustré, ces moyens déformables sont constitués par un empilement de rondelles ressorts, de type connu en soi. Cependant, l'homme du métier pourra utiliser d'autres types de moyens élastiques. À titre de variante non représentée, on peut notamment citer un ressort de compression.This housing 70 allows the reception of deformable means, in accordance with the invention. These deformable means 72 are interposed between the stud 46 and the bottom 71 of the housing 70. In the example illustrated, these deformable means consist of a stack of spring washers, of a type known per se. However, a person skilled in the art can use other types of elastic means. As a variant not shown, there may be mentioned in particular a compression spring.

On note F1 la force de rappel générée par les moyens élastiques 72, ainsi que F2 la force axiale exercée par la biellette 82 sur la bielle 30. Dans le cas où la force F1 est supérieure à la force F2, les moyens élastiques tendent à rappeler l'organe mobile à l'opposé du corps, de sorte que l'épaulement 66 prend appui contre le capot 50. La bielle 30 possède alors une longueur dite nominale, notée L1, qui correspond à son fonctionnement normal.We denote F1 the return force generated by the elastic means 72, as well as F2 the axial force exerted by the link 82 on the rod 30. In the case where the force F1 is greater than the force F2, the elastic means tend to return the movable member opposite the body, so that the shoulder 66 bears against the cover 50. The connecting rod 30 then has a so-called nominal length, denoted L1, which corresponds to its normal operation.

En revanche, si la force F1 est inférieure à la force F2, la biellette tend à repousser l'organe mobile en direction du corps, de sorte que l'extrémité libre 68 du col est déplacée en translation vers le dégagement 44. Dans ce second cas, la longueur L2 de la bielle est réduite par rapport à sa longueur nominale ci-dessus. La différence entre L2 et L1, lorsque L2 correspond à la course minimale de l'organe mobile par rapport au corps, est typiquement de l'ordre de quelques millimètres.On the other hand, if the force F1 is less than the force F2, the link tends to push the movable member towards the body, so that the free end 68 of the neck is moved in translation towards the clearance 44. In this second In this case, the length L2 of the connecting rod is reduced compared to its nominal length above. The difference between L2 and L1, when L2 corresponds to the minimum stroke of the movable member relative to the body, is typically of the order of a few millimeters.

Comme cela est montré notamment par les figures 3 à 5, le marchepied comprend en outre une came, désignée dans son ensemble par la référence 90, laquelle est montée sur l'arbre 12 du moteur. On note C90 le centre de cette came, qui se situe sur l'axe géométrique du moteur. En vue de face, cette came 90 est par nature dissymétrique de sorte qu'elle délimite une portion renflée 91, ainsi qu'une portion amincie 92. De façon plus précise, cette came comprend une surface dite active 93 formée par une portion de cylindre dont l'axe est confondu avec celui A10 du moteur. Cette surface 93, qui délimite la portion renflée 91, est bordée par deux lignes 94 et 95, à partir desquelles s'étendent différents méplats, délimitant la portion amincie 92. Comme on le verra plus en détail dans ce qui suit, la surface active 93 assure une fonction de blocage à l'égard de l'ensemble de transmission.As shown in particular by the figures 3 to 5 , the running board further comprises a cam, generally designated by the reference 90, which is mounted on the shaft 12 of the engine. We denote C90 the center of this cam, which is located on the geometric axis of the engine. In front view, this cam 90 is asymmetrical in nature so that it delimits a bulged portion 91, as well as a thinned portion 92. More precisely, this cam comprises a so-called active surface 93 formed by a cylinder portion whose axis coincides with that A10 of the engine. This surface 93, which delimits the swollen portion 91, is bordered by two lines 94 and 95, from which extend different flats, delimiting the thinned portion 92. As will be seen in more detail below, the active surface 93 provides a blocking function with respect to the transmission assembly.

Comme cela est montré notamment par les mêmes figures 3 à 5, l'arbre 84 supporte une tige de blocage 98, destinée à coopérer avec la surface de blocage 93 mentionnée ci-dessus. Cette tige 98 et l'arbre 84 sont mutuellement solidaires par encastrement, de sorte qu'ils ne possèdent pas de degré de liberté mutuelle. L'extrémité libre de la tige, opposée à l'arbre, reçoit un galet 99 destiné à rouler contre la surface de blocage précitée 93.As shown in particular by the same figures 3 to 5 , the shaft 84 supports a locking rod 98, intended to cooperate with the locking surface 93 mentioned above. This rod 98 and the shaft 84 are mutually integral by embedding, so that they do not have a degree of mutual freedom. The free end of the rod, opposite the shaft, receives a roller 99 intended to roll against the abovementioned blocking surface 93.

Comme montré sur les figures 1 et 2, le caisson 2 présente une forme sensiblement parallélépipédique. On note 3 et 4 ses parois opposées, respectivement supérieures et inférieures, ainsi que 5 et 6 ses parois opposées latérales. On note en outre 7 sa paroi frontale dite extérieure, en référence à l'habitacle du véhicule, ainsi que 8 sa paroi frontale dite intérieure. La paroi latérale 5 est creusée d'une échancrure 9, à travers laquelle s'étend l'arbre 84. En outre, comme montré notamment par les figures 13 et 14, la paroi extérieure 7 du caisson ne fait pas saillie, par rapport à la marche dans sa position relevée. Cela est avantageux en termes de compacité, car ce caisson ne se situe pas en dehors du gabarit global du véhicule. Sur les figures 13 et 14, ce gabarit est illustré par une ligne verticale G réalisée en traits mixtes.As shown on Figures 1 and 2 , the box 2 has a substantially parallelepiped shape. We note 3 and 4 its opposite walls, respectively upper and lower, as well as 5 and 6 its opposite side walls. We also note 7 its so-called external front wall, with reference to the passenger compartment of the vehicle, as well as 8 its so-called internal front wall. The side wall 5 is hollowed out with a notch 9, through which the shaft 84 extends. In addition, as shown in particular by the Figures 13 and 14 , the outer wall 7 of the box does not protrude relative to the step in its raised position. This is advantageous in terms of compactness, because this box is not located outside the overall size of the vehicle. On the Figures 13 and 14 , this template is illustrated by a vertical line G made in dashed lines.

La mise en oeuvre du marchepied et de son dispositif d'entraînement, qui ont été décrits ci-dessus, va maintenant être explicitée.The implementation of the running board and its drive device, which have been described above, will now be explained.

On suppose, en référence aux figures 7 à 9, que la marche 100 est dans sa position rabaissée, à savoir qu'elle permet un appui pour l'utilisateur. Dans cette configuration, comme le montre la figure 8, l'axe A40 d'articulation du corps 40 est situé à l'opposé de l'axe A84, par rapport à l'axe A10 du moteur. Si on souhaite désormais relever la marche, il s'agit d'actionner le moteur dans un premier sens, de sorte que le maneton soit mis en rotation selon la flèche f1 illustrée sur les figures 11 et 12. Cela provoque alors le déplacement correspondant de la biellette 82, lequel induit à son tour le pivotement de l'ensemble de liaison. Les galets du levier 86 prennent alors appui contre la paroi supérieure du corps creux constitutif de la marche de manière à relever cette dernière, comme cela est matérialisé par la flèche F100 sur les figures 10 à 12.We assume, with reference to figures 7 to 9 , that the step 100 is in its lowered position, namely that it allows support for the user. In this configuration, as shown in the figure 8 , the axis A40 of articulation of the body 40 is located opposite the axis A84, relative to the axis A10 of the engine. If you now wish to raise the step, it is to activate the motor in a first direction, so that the crankpin is rotated according to the arrow f1 illustrated on the Figures 11 and 12 . This then causes the corresponding displacement of the rod 82, which in turn induces the pivoting of the connection assembly. The rollers of the lever 86 then bear against the upper wall of the hollow body constituting the step so as to raise the latter, as shown by arrow F100 on the figures 10 to 12 .

À un moment donné de la rotation de la marche, cette dernière vient sensiblement en butée contre le châssis, à savoir qu'elle adopte une position dite extrême haute. On note D, sur la figure 13, la droite reliant en vue de côté l'axe A10 du moteur et l'axe A60 d'articulation de la bielle 30 sur la biellette. Selon l'invention, au moment où la marche atteint sa position extrême haute, l'axe A40 d'articulation de la bielle sur le maneton se situe au-dessus cette droite D, alors que la bielle 30 n'est pas comprimée. Dans cette position dite intermédiaire de la bielle 30, illustrée sur la figure 13, la marche n'est pas verrouillée. En effet, une force exercée sur cette marche et principalement dirigée vers le bas aurait tendance à la faire retomber.At a given point in the rotation of the step, the latter comes into substantial abutment against the chassis, namely that it adopts a so-called extreme high position. We denote D, on the figure 13 , the straight line connecting in side view the axis A10 of the engine and the axis A60 of articulation of the connecting rod 30 on the connecting rod. According to the invention, when the step reaches its extreme high position, the axis A40 of articulation of the connecting rod on the crank pin located above this straight line D, while the connecting rod 30 is not compressed. In this so-called intermediate position of the connecting rod 30, illustrated on the figure 13 , the step is not locked. Indeed, a force exerted on this step and mainly directed downwards would tend to make it fall.

Si on continue à actionner le moteur, la marche ne subit plus aucun déplacement, étant donné qu'elle est en butée contre le châssis. Par ailleurs, l'axe A60 est immobilisé. En revanche, cette rotation du moteur exerce une force F2 qui est supérieure à la force de rappel élastique F1 définie ci-dessus. Par conséquent, cette force tend à comprimer les rondelles ressorts 72 de sorte que la longueur de la bielle diminue, comme cela est visible sur la figure 14. Sur cette dernière, la compression de la bielle 30 est matérialisée par les flèches F30.If the engine is continued to operate, the step no longer undergoes any movement, since it abuts against the chassis. In addition, the A60 axis is immobilized. On the other hand, this rotation of the motor exerts a force F2 which is greater than the elastic return force F1 defined above. Consequently, this force tends to compress the spring washers 72 so that the length of the connecting rod decreases, as can be seen on the figure 14 . On the latter, the compression of the connecting rod 30 is materialized by the arrows F30.

L'axe A40 vient alors s'aligner sur la droite D, comme le montre cette même figure 14. Puis, si la rotation du moteur est poursuivie, cet axe A40 passe au-dessous de cette même droite, comme le montre la figure 15. il y a alors arc-boutement de la bielle 30, assisté par les rondelles ressorts 72 travaillant en compression. Dans cette configuration, la surface 93 de la came 90 vient en butée contre le galet 99 de la tige 98, comme le montre la figure 16. Par conséquent la tige 98 est immobilisée, ce qui est matérialisé par la flèche barrée F98, ce qui assure également l'immobilisation globale de l'ensemble d'entraînement.The A40 axis is then aligned on the right D, as shown by this same figure 14 . Then, if the rotation of the motor is continued, this axis A40 passes below this same straight line, as shown in the figure 15 . there is then bracing of the rod 30, assisted by the spring washers 72 working in compression. In this configuration, the surface 93 of the cam 90 abuts against the roller 99 of the rod 98, as shown in the figure 16 . Consequently the rod 98 is immobilized, which is materialized by the crossed arrow F98, which also ensures the overall immobilization of the drive assembly.

La marche est alors verrouillée, à savoir que la bielle 30 ne peut pas entrer en rotation sous l'effet d'une action extérieure, en particulier sous l'effet d'une force exercée sur la marche et dirigée vers le bas, sauf à actionner le moteur dans le sens inverse de celui décrit ci-dessus. Comme expliqué ci-dessus, la déformation des rondelles ressorts 72 permet le passage entre la position intermédiaire non verrouillée, illustrée en figure 13, et la position verrouillée de la figure 15. Entre ces deux positions, une partie de l'ensemble de transmission, à savoir le maneton 20 et la bielle 30, est mobile alors que l'ensemble de liaison 80 est sensiblement immobile.The step is then locked, namely that the rod 30 cannot enter into rotation under the effect of an external action, in particular under the effect of a force exerted on the step and directed downward, except at operate the motor in the opposite direction to that described above. As explained above, the deformation of the spring washers 72 allows the passage between the unlocked intermediate position, illustrated in figure 13 , and the locked position of the figure 15 . Between these two positions, part of the transmission assembly, namely the crank pin 20 and the connecting rod 30, is mobile while the connection assembly 80 is substantially stationary.

L'utilisation de la came de blocage 90 présente des avantages spécifiques. En effet, elle confère une stabilité satisfaisante à l'ensemble de transmission, dans la position verrouillée de ce dernier. En particulier, cette came permet que la position verrouillée ne soit pas dépendante de l'élasticité de la bielle 30 puisque la came est en contact direct, par l'intermédiaire du galet 99, avec la biellette 82 actionnant la marche 100. Par conséquent, l'invention permet de s'affranchir précisément de tout déplacement intempestif de la marche, à partir de sa position extrême haute.The use of the locking cam 90 has specific advantages. Indeed, it gives satisfactory stability to the transmission assembly, in the locked position of the latter. In particular, this cam allows the locked position not to be dependent on the elasticity of the connecting rod 30 since the cam is in direct contact, via the roller 99, with the connecting rod 82 actuating the step 100. Consequently, the invention makes it possible to precisely overcome any untimely movement of the step, from its extreme high position.

On suppose maintenant que l'on souhaite abaisser la marche 100, à partir de sa position relevée des figures 15 et 16. Il s'agit de mettre en rotation le moteur, selon le sens inverse de celui décrit précédemment. Dans ces conditions, la surface de blocage 93 de la came 90 roule le long du galet 99 prévu à l'extrémité de la tige 98, depuis la position illustrée à la figure 16 jusqu'à la position illustrée la figure 18. Ce contact de la surface 93 de la came avec le galet permet d'immobiliser le levier 98, en particulier d'éviter tout mouvement intempestif qui contribuerait à faire remonter ce levier vers la droite des figures 16 et 18. Par ailleurs l'axe A40 tend à remonter de façon à s'aligner avec la droite D, tout en comprimant à nouveau la bielle 30 selon les flèches F30, ce qui est montré sur la figure 17. Entre les figures 15 et 18, une course morte a lieu permettant le déverrouillage alors même que la marche n'a pas bougé, grâce à la présence de la bielle 30.We now assume that we want to lower the step 100, from its raised position of Figures 15 and 16 . It involves rotating the motor in the opposite direction to that described above. Under these conditions, the blocking surface 93 of the cam 90 rolls along the roller 99 provided at the end of the rod 98, from the position illustrated in the figure 16 to the position shown figure 18 . This contact of the surface 93 of the cam with the roller makes it possible to immobilize the lever 98, in particular to avoid any untimely movement which would contribute to raising this lever to the right of the figures 16 and 18 . Furthermore, the axis A40 tends to go up so as to align with the straight line D, while again compressing the connecting rod 30 according to the arrows F30, which is shown on the figure 17 . Between the figures 15 and 18 , a dead race takes place allowing the unlocking even when the step has not moved, thanks to the presence of the connecting rod 30.

Puis, si on continue la mise en rotation du moteur 10, la came se libère du galet 99 au niveau de la ligne 94, à savoir qu'elle n'est plus en contact avec ce galet, comme cela est montré sur la figure 20. En effet, la portion amincie 92 de cette came se trouve désormais en regard de ce galet. Par conséquent, la came 90 n'interagit plus sur l'ensemble de transmission, comme cela est matérialisé par les flèches en pointillés sur cette même figure 20. De manière simultanée, l'axe A40 repasse au-dessus de la droite D, comme illustré sur la figure 19. La bielle adopte alors à nouveau la position, primitivement décrite en référence à la figure 13, dans laquelle elle n'est pas comprimée. Si on continue à actionner le moteur dans ce même sens inverse, la marche commence son mouvement d'abaissement matérialisé par la flèche F'100 sur les figures 19 et 20, la bielle 30 restant non comprimée.Then, if the rotation of the motor 10 is continued, the cam is released from the roller 99 at the level of the line 94, namely that it is no longer in contact with this roller, as shown on the figure 20 . Indeed, the thinned portion 92 of this cam is now located opposite this roller. Consequently, the cam 90 no longer interacts with the transmission assembly, as shown by the dotted arrows on this same figure 20 . Simultaneously, the A40 axis goes back over the straight line D, as illustrated on the figure 19 . The connecting rod then adopts the position again, originally described with reference to the figure 13 , in which it is not compressed. If the motor is continued to be operated in the same reverse direction, the drive begins its lowering movement, shown by the arrow F'100 on the Figures 19 and 20 , the rod 30 remaining uncompressed.

Les figures 22 et 23 illustrent le fonctionnement de la bielle 230 de l'état de la technique. Contrairement à la bielle 30 conforme à l'invention, décrite ci-dessus, cette bielle connue 230 est rigide à savoir que sa longueur est sensiblement invariante. Il est à souligner que, avec l'utilisation de cette bielle rigide, la marche 300 peut atteindre sa position extrême haute uniquement lorsque l'axe d'articulation de la bielle sur le maneton, noté A240, est situé sur la droite D. Dans cette configuration intermédiaire illustrée sur la figure 22, cette bielle n'est pas verrouillée de manière stable. Par conséquent, si on souhaite que cette bielle adopte une position de verrouillage, il est nécessaire de continuer à actionner le moteur, de sorte que l'axe précité A240 soit situé au-dessous de la droite D. Dans cette configuration finale illustrée sur la figure 23, la marche 300 a subi un basculement vers le bas par rapport à sa position extrême haute, selon la flèche F"300, de sorte qu'elle fait nécessairement saillie en dehors du gabarit global du véhicule.The figures 22 and 23 illustrate the operation of the connecting rod 230 of the prior art. Unlike the connecting rod 30 according to the invention, described above, this known connecting rod 230 is rigid, namely that its length is substantially invariant. It should be emphasized that, with the use of this rigid connecting rod, the step 300 can reach its extreme high position only when the axis of articulation of the connecting rod on the crankpin, denoted A240, is located on the right D. In this intermediate configuration illustrated on the figure 22 , this connecting rod is not locked stably. Consequently, if it is desired that this connecting rod adopts a locking position, it is necessary to continue to operate the motor, so that the aforementioned axis A240 is located below the straight line D. In this final configuration illustrated in the figure 23 , the step 300 has undergone a downward tilt relative to its extreme high position, according to arrow F "300, so that it necessarily protrudes outside the overall size of the vehicle.

Sur cette figure 23, on a hachuré la zone 300' qui fait saillie hors du gabarit, matérialisé par la droite en traits mixtes G.On this figure 23 , we hatched the zone 300 'which projects out of the template, materialized on the right in phantom lines G.

Claims (15)

Dispositif d'entraînement autoverrouillant (1) pour marchepied (1, 100) d'un véhicule de transport, notamment du type train, tramway, métro, bus ou encore trolleybus, ledit marchepied comprenant une marche (100) définissant une surface d'appui (101) pour le pied d'un utilisateur, cette marche (100) étant mobile entre une position extrême haute, ou position relevée, dans laquelle elle vient sensiblement en butée contre la caisse du véhicule, et une position extrême basse, ou position abaissée, dans laquelle elle permet à un utilisateur de prendre appui sur la surface d'appui,
ce dispositif d'entraînement comprenant
un moteur rotatif (10)
un ensemble de transmission (20, 30, 80) apte à être déplacé sous l'effet de la rotation du moteur (10) et apte à activer le déplacement de la marche
ce dispositif d'entraînement étant caractérisé en ce que ledit ensemble de transmission est pourvu de moyens élastiquement déformables (72), permettant audit ensemble de transmission d'occuper une position verrouillée lorsque la marche occupe ladite position extrême haute, ladite position verrouillée ne nécessitant pas une surcourse angulaire préalable de la marche.Self-locking drive device (1) for step (1, 100) of a transport vehicle, in particular of the train, tram, metro, bus or even trolley bus type, said step comprising a step (100) defining a bearing surface (101) for the foot of a user, this step (100) being movable between an extreme high position, or raised position, in which it comes substantially into abutment against the body of the vehicle, and an extreme low position, or lowered position , in which it allows a user to rest on the bearing surface,
this training device comprising
a rotary motor (10)
a transmission assembly (20, 30, 80) able to be moved under the effect of the rotation of the motor (10) and able to activate the movement of the step
this drive device being characterized in that said transmission assembly is provided with elastically deformable means (72), allowing said transmission assembly to occupy a locked position when the step occupies said extreme high position, said locked position not requiring a prior angular overtravel of the step. Dispositif selon la revendication 1, caractérisé en ce que, lors du passage de la marche mobile entre la position abaissée et la position relevée, l'ensemble de transmission est soumis à un arc-boutement.Device according to claim 1, characterized in that , when the movable step passes between the lowered position and the raised position, the transmission assembly is subjected to a bracing. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'ensemble de transmission (20, 30, 80) est apte à occuper une position intermédiaire non verrouillée, dans la position extrême haute de la marche, au moins une partie (20, 30) de cet ensemble de transmission étant en outre mobile entre cette position intermédiaire et ladite position verrouillée, grâce à la déformation des moyens déformables (72).Device according to claim 1 or 2, characterized in that the transmission assembly (20, 30, 80) is capable of occupying an unlocked intermediate position, in the extreme high position of the step, at least one part (20, 30) of this transmission assembly also being movable between this intermediate position and said locked position, thanks to the deformation of the deformable means (72). Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il comprend en outre des moyens de blocage (90), propres à immobiliser l'ensemble de transmission dans sa position verrouillée, sans solliciter les moyens déformables (72) pour maintenir cette position verrouillée, les moyens de blocage comprenant en particulier une came de blocage (90), montée sur l'arbre (12) du moteur (10), la came de blocage comprenant avantageusement une portion renflée (92), définissant une surface de blocage (93) apte à bloquer l'ensemble de transmission dans sa position verrouillée.Device according to one of the preceding claims, characterized in that it further comprises locking means (90), suitable for immobilizing the transmission assembly in its locked position, without requesting the deformable means (72) to maintain this locked position, the locking means comprising in particular a locking cam (90), mounted on the shaft (12) of the motor (10), the locking cam advantageously comprising a bulged portion (92), defining a locking surface (93) able to block the transmission assembly in its locked position. Dispositif selon la revendication précédente, caractérisé en ce que la surface de blocage (93) de la came de blocage (90) est délimitée par une portion de cylindre, dont l'axe est confondu avec l'axe géométrique (A10) du moteur.Device according to the preceding claim, characterized in that the blocking surface (93) of the blocking cam (90) is delimited by a portion of cylinder, the axis of which coincides with the geometric axis (A10) of the engine. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'ensemble de transmission comprend
un maneton (20) apte à être déplacé par le moteur
une bielle (30) apte à être déplacée par le maneton, ladite bielle (30) étant avantageusement pourvue des moyens déformables (72), ces moyens déformables étant propres à permettre une variation significative de la dimension axiale de cette bielle un ensemble de liaison (80) apte à être déplacé par la bielle, cet ensemble de liaison étant apte à activer le déplacement de la marche.Device according to one of the preceding claims, characterized in that the transmission assembly comprises
a crank pin (20) capable of being moved by the engine
a connecting rod (30) able to be moved by the crank pin, said connecting rod (30) being advantageously provided with deformable means (72), these deformable means being suitable for allowing a significant variation in the axial dimension of this connecting rod a connecting assembly ( 80) able to be moved by the connecting rod, this connection assembly being able to activate the movement of the step. Dispositif selon la revendication précédente, caractérisé en ce qu'il comprend en outre une tige de blocage (98), apte à coopérer avec la surface de blocage (93) de la came de blocage (90), cette tige de blocage étant solidaire de l'ensemble de liaison (80).Device according to the preceding claim, characterized in that it further comprises a blocking rod (98), capable of cooperating with the blocking surface (93) of the blocking cam (90), this blocking rod being integral with the connection assembly (80). Dispositif selon l'une des revendications précédentes, caractérisé en ce que la marche est apte à occuper sa position extrême haute, lorsque l'axe A40 d'articulation de la bielle (30) sur le maneton se situe au-dessus de la droite (D) reliant en vue de côté l'axe (A10) du moteur et l'axe (A60) d'articulation de la bielle sur l'ensemble de liaison (80), ladite bielle étant apte à être comprimée de sorte que ledit axe d'articulation de la bielle sur le maneton passe au-dessous de ladite droite (D).Device according to one of the preceding claims, characterized in that the step is able to occupy its extreme high position, when the axis A40 of articulation of the connecting rod (30) on the crank pin is located above the right ( D) connecting in side view the axis (A10) of the motor and the axis (A60) of articulation of the connecting rod on the connection assembly (80), said connecting rod being able to be compressed so that said axis of articulation of the connecting rod on the crankpin passes below said straight line (D). Dispositif selon l'une des revendications précédentes, caractérisé en ce que la bielle (30) comprend un corps (40), articulé sur le maneton, ainsi qu'un organe mobile (60) apte à se déplacer par rapport au corps selon la direction axiale de la bielle, cet organe mobile étant articulé sur l'ensemble de liaison (80), les moyens déformables (72) étant interposés entre les parois en regard du corps et de l'organe mobile, les moyens déformables tendant en particulier à repousser axialement en service l'organe mobile, à l'opposé du corps (40), le corps (40) et l'organe mobile (60) délimitant avantageusement une position axiale de butée mutuelle, correspondant à une longueur maximale de la bielle.Device according to one of the preceding claims, characterized in that the connecting rod (30) comprises a body (40), articulated on the crankpin, as well as a movable member (60) able to move relative to the body in the direction axial of the connecting rod, this movable member being articulated on the connection assembly (80), the deformable means (72) being interposed between the walls facing the body and the movable member, the deformable means tending in particular to repel axially in service the movable member, opposite the body (40), the body (40) and the movable member (60) advantageously defining an axial position of mutual abutment, corresponding to a maximum length of the connecting rod. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les moyens déformables (72) délimitent une position axiale correspondant à une longueur minimale de la bielle, lorsque ces moyens déformables sont entièrement comprimés.Device according to one of the preceding claims, characterized in that the deformable means (72) define an axial position corresponding to a minimum length of the connecting rod, when these deformable means are fully compressed. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le corps (40) comprend un fût (48), alors que l'organe mobile (60) comprend un col (64), le fût et le col étant aptes à coulisser mutuellement l'un au voisinage de l'autre, lors du déplacement de l'organe mobile par rapport au corps.Device according to one of the preceding claims, characterized in that the body (40) comprises a barrel (48), while the movable member (60) comprises a neck (64), the barrel and the neck being able to slide mutually one in the vicinity of the other, during the movement of the movable member relative to the body. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les moyens élastiquement déformables comprennent au moins un ressort de compression (72).Device according to one of the preceding claims, characterized in that the elastically deformable means comprise at least one compression spring (72). Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend en outre un caisson (2), dans lequel sont logés tout ou partie du moteur et de l'ensemble de transmission, ledit caisson possédant une paroi frontale externe (7), opposée en service à l'habitacle du véhicule, ladite paroi externe ne faisant pas saillie au-delà de la marche (100), dans la position extrême haute de cette dernière.Device according to any one of the preceding claims, characterized in that it further comprises a box (2), in which are housed all or part of the motor and of the transmission assembly, said box having an external front wall ( 7), opposite in service to the passenger compartment of the vehicle, said external wall not projecting beyond the step (100), in the extreme high position of the latter. Marchepied pour véhicule de transport, notamment du type train, tramway, métro, bus ou encore trolleybus, ce marchepied comprenant
une marche (100) définissant une surface d'appui (101) pour le pied d'un utilisateur, cette marche étant mobile entre une position extrême haute, dite position relevée, dans laquelle elle est escamotée au voisinage de la caisse du véhicule, ainsi qu'une position extrême basse, dite position abaissée, dans laquelle elle permet à un utilisateur de prendre appui sur la surface d'appui,
un dispositif d'entraînement (1) de cette marche, apte à déplacer cette marche entre sa position relevée sa position abaissée,
ce dispositif d'entraînement étant conforme à l'une des revendications précédentes.Step for transport vehicle, especially of the train, tram, metro, bus or even trolleybus type, this step comprising
a step (100) defining a bearing surface (101) for the foot of a user, this step being movable between an extreme high position, called the raised position, in which it is retracted in the vicinity of the vehicle body, thus an extreme low position, called the lowered position, in which it allows a user to rest on the bearing surface,
a drive device (1) for this step, capable of moving this step between its raised position and its lowered position,
this drive device being according to one of the preceding claims. Véhicule de transport, notamment du type train, tramway, métro, bus ou encore trolleybus, comprenant au moins un marchepied conforme à la revendication précédente.Transport vehicle, in particular of the train, tram, metro, bus or even trolley bus type, comprising at least one step according to the preceding claim.
EP19215473.0A 2018-12-18 2019-12-12 Self-locking device for moving a step of a transport vehicle, step and vehicle equipped in this way Active EP3674168B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1873126A FR3090059B1 (en) 2018-12-18 2018-12-18 SELF-LOCKING TRAINING DEVICE FOR TRANSPORT VEHICLE FOOTBOARDS, FOOTBOARDS AND VEHICLES THUS EQUIPPED

Publications (2)

Publication Number Publication Date
EP3674168A1 true EP3674168A1 (en) 2020-07-01
EP3674168B1 EP3674168B1 (en) 2022-04-13

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ID=66867240

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19215473.0A Active EP3674168B1 (en) 2018-12-18 2019-12-12 Self-locking device for moving a step of a transport vehicle, step and vehicle equipped in this way

Country Status (3)

Country Link
EP (1) EP3674168B1 (en)
ES (1) ES2912877T3 (en)
FR (1) FR3090059B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1027085B (en) * 1956-09-19 1958-03-27 Maschf Augsburg Nuernberg Ag Vehicle entry
FR2405849A1 (en) * 1977-10-13 1979-05-11 Faiveley Sa RETRACTABLE FOOTBOARD, ESPECIALLY FOR A RAILWAY CAR DOOR
DE3409257A1 (en) 1984-03-14 1985-09-19 IBEG Maschinen- und Gerätebau GmbH, 4370 Marl Safety drive with clamping protection for the movable step
ES2145710A1 (en) * 1998-07-06 2000-07-01 Faiveley Espanola Improved retractable step for passenger cars
CN206954230U (en) * 2017-06-14 2018-02-02 江苏惠民交通设备有限公司 A kind of stopping sliding door overturning pedal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1027085B (en) * 1956-09-19 1958-03-27 Maschf Augsburg Nuernberg Ag Vehicle entry
FR2405849A1 (en) * 1977-10-13 1979-05-11 Faiveley Sa RETRACTABLE FOOTBOARD, ESPECIALLY FOR A RAILWAY CAR DOOR
DE3409257A1 (en) 1984-03-14 1985-09-19 IBEG Maschinen- und Gerätebau GmbH, 4370 Marl Safety drive with clamping protection for the movable step
ES2145710A1 (en) * 1998-07-06 2000-07-01 Faiveley Espanola Improved retractable step for passenger cars
CN206954230U (en) * 2017-06-14 2018-02-02 江苏惠民交通设备有限公司 A kind of stopping sliding door overturning pedal

Also Published As

Publication number Publication date
ES2912877T3 (en) 2022-05-30
FR3090059B1 (en) 2020-11-27
FR3090059A1 (en) 2020-06-19
EP3674168B1 (en) 2022-04-13

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