FR3084861A1 - MOTOR VEHICLE WITH MIDDLE UPRIGHTS PROTECTED OVER THEIR HEIGHT BY AT LEAST ONE INFLATABLE BAG PROTECTION DEVICE - Google Patents

Abstract

A motor vehicle (1) comprises a structure (2), delimiting a passenger compartment (3) housing a rear seat (4), and comprising rear uprights (6) each delimiting forward part of a space (7) housing a door, each extended rearwards in a lower part by a sheet (8), and each associated with a protection device (9) comprising an airbag, initially folded and associated with a pyrotechnic release (14) which, upon receipt of an order following an impact and / or braking inflates this bag. Each bag deploys by surrounding the associated rear upright (6) over its entire height in order to provide lateral protection for a passenger (11) seated in the rear seat (4) over the entire height of the rear upright (6) when this rear seat (4) is placed in a position placing part of the passenger (11) at the rear upright (6).

Description

AUTOMOTIVE VEHICLE WITH REAR UPRIGHTS PROTECTED OVER THEIR HEIGHT BY AT LEAST ONE INFLATABLE BAG PROTECTION DEVICE

The invention relates to motor vehicles which comprise a structure (or body) delimiting a passenger compartment and comprising rear uprights (or "feet") each delimiting forward part of a space housing a side door generally comprising a window.

Certain motor vehicles, of the type defined above, include a passenger compartment having a rear part in which is installed at least one rear seat which can be moved from front to back over a relatively large distance and / or the backrest of which can be rotated backwards over a relatively large angular sector. This is for example the case, although not limited to, of certain so-called vehicles with automated (or autonomous) driving, that is to say which can be driven in a fully automated manner (without intervention of their driver) during a phase of automated driving under the control of a driving assistance device (possibly ADAS (“Advanced Driver Assistance System”)).

As those skilled in the art know, when such a rear seat is translated and / or reclined backwards, an upper part of the body of the passenger who sits on it, going from his pelvis to his head, can find at least partially located at the level of the rear upright (or foot), and therefore finds itself exposed in the event of a side impact. This rear pillar is certainly provided with a lining (generally a panel comprising a foam) which confers protection by damping, but this proves to be insufficient to effectively protect the passenger in the event of a side impact.

In order to improve the lateral protection of passengers, the rear pillars of certain vehicles are equipped in their upper part (located at the door window) with a protective device (or "airbag") comprising an airbag, initially folded up and associated with a pyrotechnic trigger which, in the event of receipt of a command following an impact and / or braking suffered by the vehicle, inflates it in the passenger compartment on the door window. This type of protection device is in fact intended only to protect the head of the rear passenger against impacts on the door window, and therefore his “flat” type bag has a small thickness once inflated, which in turn is generally worth the name "curtain airbag". Unfortunately, such a flat bag proves insufficiently protective for the head of the rear passenger in the event of an impact on the upper part of the rear pillar, and in particular against one of its front and rear edges, including when the rear seat is backed away with his file straightened. In addition, this flat bag cannot protect the upper part of the passenger's body over three-quarters of its height (and more specifically, the neck, shoulders, chest and abdomen) in the event of an impact on the part lower of the rear upright, and in particular against its front edge, whatever the respective positions of the rear seat and the backrest of the latter.

The invention therefore aims in particular to improve the situation.

To this end, it notably proposes a motor vehicle comprising a structure delimiting a passenger compartment housing at least one rear seat, and comprising rear uprights each delimiting forwards a part of a space housing a door, each extended rearwards. in a lower part by a sheet, and each associated with at least one protection device comprising at least one airbag, initially folded and associated with at least one pyrotechnic trigger which, in the event of reception of a command following an impact and / or braking undergone by the vehicle, inflates this (each) bag.

This motor vehicle is characterized by the fact that each bag is designed to deploy in the passenger compartment when it is inflated by surrounding the associated rear upright in order to provide lateral protection for a passenger seated in the rear seat over the entire height of the rear pillar when this rear seat has been temporarily placed in the passenger compartment in a position placing part of the passenger at the level of this rear pillar.

Thus, when the upper part of the body of a rear passenger is at least partially placed in front of a rear pillar, it is now effectively protected by the (each) bag which surrounds this rear pillar, once inflated.

The motor vehicle according to the invention may include other characteristics which can be taken separately or in combination, and in particular:

each bag associated with a rear upright may comprise first internal conduits coupled to at least one associated pyrotechnic trigger and channeling a gas supplied by the latter towards the front and rear peripheral zones so as to start by covering the front and rear edges of this rear upright, and second internal conduits then channeling the rest of the gas to a central zone placed in front of a central part of this rear upright;

> the first and second internal conduits can be flexible pipes provided with orifices in predefined locations;

- Each bag associated with a rear upright may include vertical seams in predefined locations and spaced from each other in a longitudinal direction of the vehicle in order to distribute in a vertical direction a gas supplied by at least one associated pyrotechnic trigger;

- In a first embodiment, each protection device can comprise, firstly, a bag having upper and lower parts provided with holes supplying respectively front and rear peripheral zones, secondly, a pyrotechnic trigger upper installed in an upper part of the associated rear upright and coupled to the hole in the upper part of the bag, and, thirdly, a lower pyrotechnic trigger installed in a lower part of the associated rear upright and coupled to the hole in the lower part from the bag;

- In a second embodiment, each protection device can comprise, on the one hand, a bag having upper and lower parts each provided with a hole, and, on the other hand, a large-capacity pyrotechnic trigger, installed in a lower end of the associated rear upright and coupled respectively to the holes of the upper and lower parts of the bag by two conduits of different lengths;

> the pyrotechnic trip device can comprise two chambers supplying the conduits respectively;

- In a third embodiment, each rear upright may comprise, on the one hand, a first protection device installed in an upper part in order to ensure lateral protection of the passenger over an upper half of its height, and, on the other hand, a second protection device installed in a lower part in order to ensure lateral protection of the passenger over a lower half of its height;

> each of the first and second protection devices can comprise, on the one hand, a bag provided with two holes supplying respectively front and rear peripheral zones, and, on the other hand, two pyrotechnic triggers installed in an upper or lower part of the rear post associated and respectively coupled to the two holes of the bag;

• each bag can comprise two independent lobes and respectively defining its front and rear peripheral zones.

Other characteristics and advantages of the invention will appear on examining the detailed description below, and the appended drawings (some obtained in CAD / CAD ("Computer Aided Design / Computer Aided Drawing"), d 'where the apparently discontinuous character of certain lines and meshes), on which:

- Figure 1 illustrates schematically and functionally, in a top view, an example of a motor vehicle according to the invention comprising two rear seats, on one of which is installed a passenger in a partially extended position, and two rear uprights each equipped with '' a protective device before inflating their bag,

FIG. 2 schematically and functionally illustrates, in a top view, the motor vehicle of FIG. 1 with the bags of its protective devices deployed,

- Figure 3 schematically illustrates, in a perspective view from the inside, a part of a structure of a motor vehicle according to the invention, with its rear left upright equipped with a first embodiment of a device protection with his inflated bag, and

- Figure 4 schematically illustrates, in a perspective view from the inside, part of a structure of a motor vehicle according to the invention, with its rear left upright equipped with a second embodiment of a device protection with its inflated bag.

The object of the invention is in particular to propose a motor vehicle 1 comprising a structure 2, delimiting a passenger compartment 3 housing at least one rear seat 4, 5 reclining and / or translatable, and comprising rear uprights 6 each delimiting forward a part of a space 7 housing a door, each extended rearward in a lower part by a sheet 8, and each associated with at least one protection device 9 with inflatable bag (s) 10 intended to protect a upper part of a rear passenger body 11 in the event of a side impact.

In what follows, it is considered, by way of nonlimiting example, that the motor vehicle 1 is a car comprising a row of front seats 12 and a row of rear seats 4 and 5. However, the invention is not limited to this type of motor vehicle. It in fact relates to any type of motor vehicle comprising a structure delimiting a passenger compartment housing at least one reclining and / or translatable rear seat and able to accommodate at least one passenger, and comprising rear uprights each delimiting part of a space housing a door. Consequently, the invention also relates to vehicles comprising at least three rows of seats and commercial vehicles which can accommodate rear passengers (and sometimes called in English "ludospace"), for example.

Furthermore, it is considered in what follows, by way of nonlimiting example, that the motor vehicle 1 is with automated (or autonomous) driving, and therefore that it can be driven in a totally automated manner (without intervention of its driver). )) during an automated driving phase under the control of a driving assistance device (possibly ADAS type). But it is not compulsory. Indeed, it could be partially automated (or autonomous) driving, or only manual driving.

In FIGS. 1 and 2, the direction X is the longitudinal direction of the motor vehicle 1, which is parallel to the lateral sides comprising the side doors, the direction Y is the transverse direction of the motor vehicle 1, which is perpendicular to the lateral sides and to the longitudinal direction X, and the direction Z is the vertical direction of the motor vehicle 1, which is perpendicular to the longitudinal X and transverse Y directions.

There is schematically shown in Figures 1 and 2 an example of a vehicle (automobile) 1 (here a car) comprising a structure (or body) 2 which delimits a passenger compartment 3 housing two front seats 12 and two rear seats 4 and 5. This structure 2 here includes, in particular, uprights (or feet) middle 13 (right and left), each located between two side windows (not shown) and uprights (or feet) rear 6 (right and left), each associated with the at least one protective device 9 with an inflatable bag (s) 10 (or “airbag”).

Note that in the example illustrated without limitation in Figures 1 and 2 the vehicle 1 comprises two rear seats 4 and 5, but it could include a single seat (bench type) or more than two seats (for example three) .

The vehicle 1 is here driving on the left because its steering wheel is installed on the left. Therefore, the left front seat 12 is the driver's seat.

The rear left 4 and right 5 seats here can be translated backwards and / or their backrests can be rotated backwards over a relatively large angular sector. In the example illustrated in FIGS. 1 and 2, the left rear seat 4 has been moved and tilted backwards in order to allow its rear passenger 11 to rest, possibly while the vehicle 1 is in the driving phase. automated.

As is better seen in FIGS. 3 and 4, each rear upright 6 delimits towards the front part of a space 7 housing a rear door (not shown), is extended towards the rear in a lower part by a sheet 8 , and is associated with at least one protective device 9 with an inflatable bag (s) 10. Each rear door may, for example, comprise a window which extends substantially up to the middle upright 13.

In the example illustrated without limitation in FIGS. 3 and 4, each rear upright 6 comprises an upper part, notably narrower than its lower part extended rearwards by a sheet 8, and framing part of a space 16 housing a small fixed window.

Each protection device 9, associated with a rear upright 6, comprises at least one inflatable bag 10, initially folded, and associated with at least one pyrotechnic trigger 14.

The (each) airbag 10 of a protective device 9 associated with a rear pillar 6 is installed between an internal face of the latter (6), oriented towards the passenger compartment 3, and a lining 15 which masks and covers the pillar rear 6. Furthermore, the (each) airbag 10 can be initially folded inside a housing (not shown).

The (each) pyrotechnic trigger 14 of a protection device 9 associated with a rear upright 6 is arranged, in the event of reception of a command following an impact and / or braking undergone by the vehicle 1, so as to inflate (immediately and very quickly) the (each) associated (inflatable) bag 10 so that it deploys in the passenger compartment 3 by surrounding this rear upright 6, as will be explained below and as illustrated in FIGS. 2 to 4 This deployment can be done by pushing the lining 15 placed in front of the (each) bag 10 and secured to the rear upright 6, or else via a weakening defined on the inside of this lining 15, and therefore invisible from the outside. Such a weakening may, for example, consist of a vertical groove of the height of the bag 10 and which, under pressure, opens by defining two lateral parts which remain fixed to the rear upright 6 leaving the passage to the bag 10 in progress expansion.

It will be noted that the command which activates the (each) pyrotechnic trip device 14 is generated by control means which can, for example, be installed in the possible housing, but which could alternatively be part of a remote computer and possibly ensuring at least one other function within the vehicle 1. These control means could also include a computer or a microprocessor. Consequently, the control means can be arranged in the form of a combination of electronic circuits (or "hardware") and software modules (or computer (or even "software")), or only software modules.

These control means are arranged so as to generate a command intended to activate the (each) pyrotechnic trigger 14 in the event of reception of an alert signal generated by a computer on board the vehicle 1, in particular when it detects a shock. sufficiently large and / or sufficiently strong braking by analyzing information supplied by at least one on-board sensor (for example of position or acceleration or pressure). For example, the generation of this alert signal may result from the detection of a threshold crossing. Note that the alert signal can be analog or digital. Likewise, the command intended to activate the (each) pyrotechnic trip device 14 can be analog or digital.

As illustrated without limitation in FIGS. 3 and 4, the (each) pyrotechnic trigger 14 of a protection device 9 associated with a rear upright 6 is preferably installed on the internal face of the latter (6), which is oriented towards the passenger compartment 3. But it could alternatively be secured to the external face of the rear upright 6. This installation can be done by screwing or by means of at least one fixing collar (itself screwed, for example by two screws self-tapping) or also by means of fixing lugs which the body of (each) pyrotechnic trip device 14 includes.

Each bag 10, of a protective device 9 associated with a rear upright 6, is arranged so as to deploy in the passenger compartment 3, when it is inflated by at least one associated pyrotechnic trigger 14, surrounding this rear upright 6 over its entire height.

This provides lateral protection for a rear passenger 11 seated in a rear seat 4 or 5 over the entire height of the rear upright 6 when this rear seat 4 or 5 has been temporarily placed in the passenger compartment 3 in a position placing a portion of the rear passenger 11 who sits on it at the level of this rear upright 6, as in the case illustrated in FIG. 2. Indeed, when the upper part (head, neck, shoulders, thorax and abdomen) of the passenger's body rear 11 (here on the left) is at least partially placed in front of the rear upright 6 (left), it is now found protected by the (each) bag 10 which surrounds this rear upright 6, once inflated. In particular, the substantially vertical front and rear edges of each rear upright 6 are effectively separated from the rear passenger body 11 by two opposite front 17 and rear 18 peripheral zones of the bag 10, which avoids potentially serious injuries in the event of a side impact on the vehicle 1.

The capacity of a bag 10 to surround once inflated a rear upright 6 (here from the fixed window housed in the space 16 to the door window in the upper part or from the rear sheet 8 to the door window in the lower part), may, for example, result from the initial conformation of this bag 10, for example due to the respective shapes of its different parts and / or the presence of seams in predefined locations to guide the shape during inflation, or by using different lengths of fabric between the two “internal” and “external” faces of the bag 10 (it is then the shortest (external) face which controls the curvature during swelling).

For example, the (each) bag 10 associated with a rear upright 6 may include first and second internal conduits. The first internal conduits are coupled to at least one associated pyrotechnic trigger 14 and are responsible for channeling a gas supplied by the latter (14) towards the front 17 and rear 18 peripheral zones (and therefore in both directions of the longitudinal direction X ) in order to start by covering the front and rear edges of the rear upright 6. It is indeed these edges which are the most dangerous for a rear passenger 11 and therefore which must first and foremost be protected by the bag 10. The second conduits interns are responsible for then channeling the rest of the gas coming from the pyrotechnic trigger 14 to a central zone of their bag 10 which is placed in front of a central part of the rear upright 6, between its front and rear edges.

In the presence of this last option, one begins by inflating the two peripheral peripheral zones 17 and rear 18 opposite the bag 10, over their entire height, then the central zone of the latter (10) is inflated over its entire height.

For example, the first and second internal conduits may be flexible pipes which are provided with holes in predefined locations. These orifices can, for example, be defined on a rear face (oriented towards the internal face of the rear upright 6) to allow inflation towards the front and rear edges, at the front (or rear) end to allow inflation of the 'front end (or rear), and on upper and lower sides to allow inflation up and down. As a variant or in addition, the first and second internal conduits can be defined by seams. In another alternative embodiment, different lengths of fabrics could be provided between the internal and external faces of the bag 10.

Also for example, each bag 10 associated with a rear upright 6 may include vertical seams, at locations which are predefined and spaced from one another in the longitudinal direction X of the vehicle 1, in order to distribute the gas in the vertical direction Z which is provided by at least one associated pyrotechnic trigger 14. This option is intended to facilitate the distribution of the inflation gas over the entire height of a bag 10 to optimize the deployment speed and obtain the nominal operating pressure more quickly.

Each protection device 9 can be produced in different ways, in particular depending on the configuration of the associated rear upright 6 and the environment thereof (6).

In a first exemplary embodiment illustrated in FIG. 3, each protection device 9 comprises a bag 10, an upper pyrotechnic trigger 14 and a lower pyrotechnic trigger 14. The bag 10 comprises an upper part 19 and a lower part 20 which are provided each of a hole supplying in particular the front 17 and rear 18 peripheral zones, and which preferably communicate with each other. It has a large volume due to the fact that it extends over the entire height of its rear pillar 6 once inflated, so as to serve as a full protective screen on the passenger side

3. The upper pyrotechnic trigger 14 is installed in the upper part of the associated rear upright 6 and is coupled to the hole in the upper part 19 of the bag 10. The lower pyrotechnic trigger 14 is installed in the lower part of the associated rear upright 6 and is coupled to the hole in the lower part 20 of the bag 10.

It will be noted that in a variant not illustrated, one could provide two upper pyrotechnic triggers 14 installed in the upper part of the associated rear upright 6 and coupled respectively to two holes in the upper part 19 of the bag 10, and two lower pyrotechnic triggers 14 installed in the lower part of the rear post 6 associated and respectively coupled to two holes in the lower part 20 of the bag 10. In this case, the upper pyrotechnic trigger 14 located most forward of the rear post 6 is preferably responsible for supplying a upper front half of the bag 10, the upper pyrotechnic trigger 14 located furthest to the rear of the rear upright 6 is preferably responsible for supplying an upper rear half of the bag 10, the lower pyrotechnic trigger 14 located most furthest from the rear upright 6 is preferably responsible for supplying a he lower front half of the bag 10, and the lower pyrotechnic trigger 14 located furthest to the rear of the rear upright 6 is preferably responsible for supplying a lower rear half of the bag 10.

It will also be noted that in this first embodiment the bag 10 could comprise independent upper 19 and lower parts 20, thus making it possible to control their respective pressures independently, and / or the upper 19 and lower parts 20 of the bag 10 could comprise two lobes independent and defining respectively its front 17 and rear 18 peripheral zones supplied (respectively) by the pyrotechnic trigger (s) 14 upper (s) or lower (s).

In a second exemplary embodiment illustrated in FIG. 4, each protection device 9 can comprise a bag 10 and a pyrotechnic trigger 14 of large capacity (in gas and in power).

The bag 10 comprises upper 19 and lower 20 parts each provided with a hole for the gas supply. The upper part 19 of the bag 10 is deployed in front of an upper part of the associated rear upright 6 in order to serve as a protective screen in front of the latter upper part. The lower part 20 of the bag 10 is deployed in front of a lower part of the associated rear upright 6 in order to serve as a protective screen in front of the latter lower part.

The single pyrotechnic trigger 14 can, for example and as illustrated without limitation in FIG. 4, be installed in the lower part of the associated rear upright 6 and be coupled respectively to the holes of the upper 19 and lower 20 parts of the bag 10 by two conduits 21 and 22 of different lengths. The largest (21) of the conduits is responsible for supplying the upper part 19 of the bag 10, while the smallest (22) of the conduits is responsible for supplying the lower part 20 of the bag 10.

For example, and as illustrated without limitation in FIG. 4, the pyrotechnic trigger 14 can advantageously be housed (at least partially) in an opening 23 which frequently includes the lower part of the rear upright 6. This facilitates the installation of the pyrotechnic trigger 14 relative to its rear pillar 6.

In a variant of the second embodiment (not shown), the pyrotechnic trigger 14 may comprise two chambers responsible for supplying the two conduits 21 and 22 respectively. A pyrotechnic trigger 14 with two chambers is certainly more bulky than a pyrotechnic trigger 14 single-chamber, but this is not a problem when installed in the opening 23 which frequently includes the lower part of the rear upright 6. In addition, a two-chamber pyrotechnic trigger 14 has better performance than a trigger pyrotechnic 14 single-chamber, in particular in terms of the speed of swelling.

In a third embodiment (not illustrated), each rear upright 6 may include first and second protective devices 9. The first protective device 9 is installed in the upper part of its rear upright 6 in order to provide lateral protection of the rear passenger 11 on an upper half of the height of the latter (6).

The second protection device 9 is installed in a lower part of its rear upright 6 in order to provide lateral protection for the rear passenger 11 over a lower half of the height of the latter (6). For example, each of the first and second protective devices 9 may comprise a bag 10 provided with two holes supplying respectively the front 17 and rear 18 peripheral zones, and two pyrotechnic triggers 14 installed in an upper or lower part of the associated rear upright 6 and respectively coupled to the two holes of the bag 6 concerned.

It will be noted that in this third embodiment, each upper or lower bag 10 could comprise two independent lobes and defining respectively its front 17 and rear 18 peripheral zones supplied respectively by two upper or lower pyrotechnic triggers 14.

It will also be noted that whatever the embodiment, the position of each pyrotechnic trigger 14 depends on the space available on the part (upper or lower) of the rear upright 6. Consequently, a pyrotechnic trigger 14 can be installed substantially according to the longitudinal direction X (as in the example in FIG. 4), or substantially in the vertical direction Z, or even in an oblique direction, lying between the longitudinal direction X and the vertical direction Z (as in the example in the figure 3).

It will also be noted that whatever the embodiment, each bag 10 may possibly extend over at least part of the door window which is situated just before its rear upright 6. This makes it possible to increase the support and therefore the stability of the inflated bag 10.

The invention offers several advantages, including:

- it allows more freedom in seat movements while maintaining maximum safety,

- It can allow, in the case of an autonomous vehicle (and therefore comprising means for analyzing the whole of its environment), to trigger at least one rear airbag in a preventive manner (and possibly with a controlled pressure) in the event of detection of a significant danger (such as in the event of detection of another vehicle arriving with a significant speed gradient, or in the event of loss of control of the vehicle in a bend or on a slippery road, or in case of 5 detection of a dangerous position of a rear passenger),

- it offers a gain in overall safety, including in the event of a violent side impact,

- it can limit the mass of structural reinforcements.

Claims (10)

1. Motor vehicle (1) comprising a structure (2), delimiting a passenger compartment (3) housing at least one rear seat (4), and comprising rear uprights (6) each delimiting a part of a space towards the front (7) housing a door, each extended rearward in a lower part by a sheet (8), and each associated with at least one protection device (9) comprising at least one inflatable bag (10), initially folded and associated with at least one pyrotechnic trigger (14) which, in the event of reception of a command following an impact and / or braking undergone by said vehicle (1), inflates said bag (10), characterized in that each bag (10) is arranged to deploy in said passenger compartment (3) when it is inflated by surrounding the rear post (6) associated over its entire height in order to provide lateral protection for a passenger (11) seated on said rear seat (4) over the entire height of said rear upright (6) when this rear seat (4) has been temporarily placed in said passenger compartment (3) in a position placing part of said passenger (11) at said rear post (6). 2. Vehicle according to claim 1, characterized in that each bag (10) associated with a rear upright (6) comprises first internal conduits coupled to at least one associated pyrotechnic trigger (14) and channeling a gas supplied by the latter ( 14) in the direction of front (17) and rear (18) peripheral zones in order to begin by covering the front and rear edges of said rear upright (6), and second internal conduits then channeling the rest of said gas to a central zone placed between said peripheral zones (17, 18) and in front of a central part of said rear upright (6). 3. Vehicle according to claim 2, characterized in that said first and second internal conduits are flexible pipes provided with orifices at predefined locations. 4. Vehicle according to one of claims 1 to 3, characterized in that each bag (10) associated with a rear upright (6) comprises vertical seams in predefined locations and spaced from each other in a longitudinal direction of said vehicle (1) in order to distribute in a vertical direction a gas supplied by at least one associated pyrotechnic trigger (14). 5. Vehicle according to one of claims 1 to 4, characterized in that each protection device (9) comprises i) a bag (10) having upper (19) and lower (20) parts provided with holes supplying respectively front (17) and rear (18) peripheral zones, ii) an upper pyrotechnic trigger (14) installed in an upper part of the associated rear upright (6) and coupled to said hole in the upper part (19) of said bag (10), and iii) a lower pyrotechnic trigger (14) installed in a lower part of the associated rear upright (6) and coupled to said hole in the lower part (20) of said bag (10). 6. Vehicle according to one of claims 1 to 4, characterized in that each protection device (9) comprises i) a bag (10) having upper (19) and lower (20) parts each provided with a hole , and ii) a large capacity pyrotechnic trigger (14), installed in a lower end of the associated rear upright (6) and coupled respectively to said holes of the upper (19) and lower (20) parts of said bag (10) by two conduits (21,22) of different lengths. 7. Vehicle according to claim 6, characterized in that said pyrotechnic trigger (14) comprises two chambers respectively supplying said conduits (21,22). 8. Vehicle according to one of claims 1 to 4, characterized in that each rear upright (6) comprises i) a first protection device (9) installed in an upper part to ensure lateral protection of said passenger (11 ) over an upper half of its height, and ii) a second protection device (9) installed in a lower part in order to ensure lateral protection of said passenger (11) over a lower half of its height. 9. Vehicle according to claim 8, characterized in that each of said first and second protection devices (9) comprises i) a bag (10) provided with two holes supplying respectively front (17) and rear (18) peripheral zones, and ii) two pyrotechnic triggers (14) installed in an upper or lower part of the rear post (6) associated and respectively coupled to said two holes of the bag (6). 10. Vehicle according to claim 9, characterized in that each bag (10) comprises two independent lobes and respectively defining its 5 front (17) and rear (18) peripheral zones.