Guide system for a vehicle seat, and vehicle comprising such a system

Abstract

The present invention relates to a guide system for a vehicle seat, comprising a rail (32) extending on a floor (13) of the vehicle in a longitudinal direction (X), the rail comprising a groove (36), an upper opening (38) extending along the groove, two plates (41a, 41b) provided with a plurality of receiving orifices (43a, 43b), and comprising a fitting (70) arranged in the groove (36). The fitting further comprises a locking device (76) comprising a locking plate (78), mobile in translation with respect to the carriage (65) in a height direction (Z), located between the support plate (74) and the upper opening (38), and a plurality of pins (79a, 79b) fixed on the locking plate, the locking device being configured to move between a locked configuration, in which each pin is engaged in one of the receiving orifices, and a free configuration.

Description

[0001] TITLE: Guidance system for a vehicle seat and vehicle comprising such a system

[0002] The present invention relates to a guidance system for a seat of a vehicle, and a vehicle comprising such a system.

[0003] It is known, in vehicles, in particular in passenger vehicles such as vans or camper vans, to move a seat or bench belonging to this vehicle. In particular, it is known to use fixing profiles or rails, fixed to the floor of the vehicle and along which the seat slides. For example, EP2423034A describes a fixing device for a vehicle seat, comprising rails, fixing profiles along which the seat is movable. For this purpose, each fixing profile comprises a groove, in which a pad is housed, fixedly connected to the seat and allowing the seat to be moved along the groove. Holes, or bores, are provided along the groove, in which a lock is housed, to stop the pad in translation along the profile.

[0004] However, the pad is subjected to tear-off forces, which are transmitted to the lock and which tend to deform the groove and therefore to deform the holes or bores, with a risk of ejection of the pad from the groove. The safety of the seat users would then be compromised.

[0005] The aim of the invention is therefore to propose a guidance system making it possible to resolve these drawbacks and limit the deformation of the rail.

[0006] For this purpose, the invention relates to a guidance system for a vehicle seat, the system comprising a rail extending on a floor of the vehicle in a longitudinal direction, the rail comprising a groove, extending in the longitudinal direction; an upper opening extending along the groove in the longitudinal direction; two plates, extending along the upper opening in the longitudinal direction and arranged on either side of the upper opening in a transverse direction, each plate being provided with a plurality of receiving orifices arranged in the longitudinal direction. The system also comprises a carriage, connected to the vehicle seat, passing through the upper opening and movable in the upper opening in the longitudinal direction;a crew, arranged in the groove, movable in the groove in the longitudinal direction, the crew comprising two heels, fixed on either side of the carriage in the transverse direction, a width of the heels and of the carriage, measured in the transverse direction, being greater than a width of the upper opening measured in the transverse direction. According to the invention, the crew further comprises a support plate, fixed to the carriage;and a locking device comprising a locking plate, movable in translation relative to the carriage in a height direction, located between the support plate and the upper opening in the height direction, and a plurality of pins, the pins being fixed on the locking plate, the plurality of pins comprising at least a first pin and a second pin, the first pin being opposite one of the plates in the height direction, the second pin being opposite the other of the plates in the height direction, the locking device being configured to evolve between a locked configuration in which each pin is engaged in one of the receiving orifices and a free configuration in which the pins are disengaged from the receiving orifices in the height direction;and a spring, fixed to the support plate, exerting on the locking plate a force tending to return the locking device to the locked configuration.;

[0007] Thanks to the invention, the deformation of the rail, in particular of the plates arranged on either side of the upper opening, is limited. Indeed, the locking plate makes it possible to distribute the forces exerted on the plates on both sides of the upper opening. As a result, the forces exerted by the pins on the plates at the receiving holes are better distributed in the plates as well as in the locking plate, thus limiting deformation of the plates and the receiving holes.

[0008] According to other advantageous aspects of the invention, the guidance system comprises one or more of the following characteristics, taken individually or in all technically possible combinations:

[0009] - Each pin comprises a head and a body, the body passing through the locking plate in the height direction, and, when the locking device is in the locked configuration, the body of each pin is partially received in one of the receiving holes.

[0010] - For each plate, each orifice is spaced from the adjacent orifice by the same distance measured in the longitudinal direction, the locking device comprises several first pins and several second pins, and the first pins on the one hand and the second pins on the other hand are spaced by the same distance as the orifices.

[0011] - The system comprises eight pawns, the first four pawns being opposite one of the plates in the height direction, the second four pawns being opposite the other of the plates in the height direction and each second pawn being opposite one of the first pawns in the transverse direction.

[0012] - The system further comprises an unlocking mechanism, configured to move the locking device from the locked configuration to the free configuration in order to move the seat in the longitudinal direction or in the direction opposite to the longitudinal direction.

[0013] - The rail comprises at least one surface raised in the height direction relative to the upper opening, the raised surface extending along the upper opening in the longitudinal direction, the system further comprising a leg, fixed to the seat and by means of which the carriage is fixed to the seat, and a roller, fixed to the leg, in contact with the raised surface and capable of pivoting about a roller axis to roll on the raised surface.

[0014] - The system further comprising two masking seals, fixed to the rail and arranged on either side of the upper opening in the transverse direction, the masking seals being configured to be elastically deformed by the carriage when in contact with the carriage, and to cover the upper opening otherwise.

[0015] - The rail comprises at least one chute, centered on a central axis parallel to the longitudinal direction, and the system further comprises a flap, the flap comprising: a tubular rod extending along a rod axis, the rod being pivotally mounted in the chute, with its rod axis aligned with the central axis of the chute; a fin, integral with the rod and extending along the rod along the rod axis, the flap being configured to pivot in the chute around the rod axis, in order to bring the fin into contact, along the height direction, with a lining arranged on the floor of the vehicle, next to the rail along the transverse direction.

[0016] - The chute comprises first teeth and the rod comprises second teeth, the rod being braked in rotation around the rod axis by cooperation of shapes between the first and second teeth.

[0017] - The rail comprises two sections, aligned in the longitudinal direction, the sections being connected to each other by a fishplate extending in the longitudinal direction, housed in the two sections.

[0018] The invention also relates to a vehicle, in particular a camper van, comprising a floor, a seat and the system described above which guides the seat relative to the floor.

[0019] The invention will appear more clearly on reading the description which follows, given solely by way of non-limiting example, and made with reference to the drawings in which: [Fig. 1] Figure 1 is a schematic representation of a camper van in accordance with the invention;

[0020] [Fig. 2] Figure 2 is a perspective view of a seat comprising a guide device according to the invention;

[0021] - [Fig. 3] Figure 3 is a section of Figure 2 along plane III;

[0022] - [Fig. 4] Figure 4 is a section of Figure 3 along line IV-IV, the guide device being in free configuration; and

[0023] - [Fig. 5] Figure 5 is a view similar to Figure 4, with the guide device in the locked configuration.

[0024] Figure 1 shows a motor vehicle 10, also called vehicle 10. The vehicle 10 is here a camper van, or alternatively a converted van or a pickup truck. The vehicle 10 comprises a body 12, intended to accommodate users of the vehicle 10, for example a driver or one or more passengers of the vehicle 10. The body 12 rests on wheels 14, which rest on the ground 15, assumed to be horizontal. The body 12 comprises a floor 13 which extends parallel to the ground 15.

[0025] The vehicle 10 is configured to move in a preferred direction, defining a forward direction DA of the vehicle 10. The forward direction DA is here oriented towards the left of FIG. 1. The vehicle 10 provides a driving position, represented schematically by a steering wheel 18, which is located on a front side of the vehicle 10. The front side of the vehicle 10 is here located on the left of FIG. 1. A rear side of the vehicle 10 is a side opposite the front side. The rear side of the vehicle 10 is here located on the right of FIG. 1.

[0026] The vehicle 10 comprises a seat 20, which is, in the example visible in FIG. 2, a bench seat.

[0027] The seat 20 is housed in the body 12, and is designed to accommodate at least one person, here three people, in a seated position. In the example of the figures, the seat 20 is a front seat, that is to say located at the front of the vehicle, facing the steering wheel 18. Alternatively, the seat 20 is an individual front seat, or even, particularly advantageously, a bench seat or an individual rear seat, located in a rear row relative to the front seat. The seat 20 comprises a seat 22, on which the users sit, and a backrest 24.

[0028] The vehicle 10 comprises a guidance system 30, which makes it possible to move the seat 20 forwards and backwards of the vehicle 10, parallel to the floor 13. The guidance system 30 comprises at least one rail 32, here two rails 32, fixed to the floor 13 and visible in FIGS. 2 to 5. The rails 32 are arranged parallel to each other, on either side of the seat 10. The rails 32 extend here in a longitudinal direction X, which is parallel to the forward direction DA.

[0029] Each rail 32 is made, for example, of aluminum. Alternatively, other materials, preferably metallic, may be used to make the rails 32.

[0030] Advantageously, the rail 32 is divided into several sections, to facilitate the transport and assembly of the rail 32. In the example of the figures, the rail 32 thus comprises two sections 32a and 32b, connected by a fishplate 53 belonging to the guidance system 30. The section 32b is represented schematically by a dotted line in Figure 2. In the example of the figures, the rail 32 comprises two fishplates 53. The two sections 32a and 32b are aligned in the longitudinal direction X. Each fishplate 53 extends in the longitudinal direction X and makes it possible to fix the sections 32a and 32b together. Each fishplate 53 is housed in the sections 32a and 32b, in a housing E32. In the example of the figures, the fishplates 53 are arranged on either side of the sections 32a and 32b in the transverse direction. Each fishplate 53 is fixed on the one hand to the section 32a and on the other hand to the section 32b by the bolts 48.

[0031] Sections 32a and 32b are similar and interchangeable, thus the following description is made for rail 32 as a whole without distinguishing between section 32a or 32b and is valid for sections 32a and 32b.

[0032] Each rail 32 comprises a main part 33 and a base 34.

[0033] The main part 33 comprises two plates 41 a and 41 b and defines a groove 36 and an upper opening 38 through which the groove 36 opens upwards, between the plates 41 a and 41 b.

[0034] The groove 36 extends along the rail 32 in the longitudinal direction X. The upper opening 38 extends along the groove 36 in the longitudinal direction X and has a width 11, in the transverse direction Y, allowing the groove 36 to communicate with the outside over an entire length of the groove 36.

[0035] The plates 41a and 41b extend along the upper opening 38 in the longitudinal direction X, on either side of the upper opening 38 in a transverse direction Y, perpendicular to the longitudinal direction X. The plates 41a and 41b thus delimit the upper opening 38 in the transverse direction Y.

[0036] The plates 41 a and 41 b each comprise receiving orifices, respectively the receiving orifices 43a for the plate 41 a and the receiving orifices 43b for the plate 41 b.

[0037] The receiving orifices 43a are arranged along the plate 41a in the longitudinal direction X, and are in the example of the figures, aligned in the longitudinal direction X, as visible in Figure 3. The receiving orifices 43b are arranged along the plate 41b in the longitudinal direction X, and are also aligned, as visible in Figure 3. Advantageously, the receiving orifices 43a and 43b are orifices passing respectively through the plate 41a and the plate 41b in a height direction Z, perpendicular to the longitudinal X and transverse Y directions. Advantageously, the receiving orifices 43a and 43b are cylindrical orifices, of equal diameter, measured parallel to a plane formed by the longitudinal X and transverse Y directions. Advantageously, each orifice 43a is spaced from the adjacent orifice 43a by the same distance d, measured in the longitudinal direction X.Likewise, advantageously, each orifice 43b is spaced from the adjacent orifice 43b in the longitudinal direction X by the same distance d', measured in the longitudinal direction X. Advantageously, the distances d and d' are equal.

[0038] Advantageously, and as shown in FIG. 3, each receiving orifice 43a faces a receiving orifice 43b in the transverse direction Y.

[0039] Advantageously, and as shown in the figures, the main part 33 comprises a raised surface 44. The raised surface 44 is flat, raised relative to the upper opening 38 in the height direction Z and extends in the longitudinal direction X.

[0040] In the example of the figures, the main part 33 comprises two raised surfaces 44 and 44', arranged on either side of the upper opening 38 and the plates 41a and 41b in the transverse direction Y.

[0041] The main part 33 advantageously comprises chutes 45a and 45b. The chutes 45a and 45b are arranged on either side of the plates 41a and 41b in the transverse direction Y, and the chutes 45a and 45b each extend along a central axis X45a and X45b respectively. The central axes X45a and X45b are parallel to the longitudinal direction X. The chutes 45a and 45b have a section, in a plane perpendicular to the longitudinal direction X, which is at least partially circular. The chutes 45a and 45b advantageously comprise first teeth, respectively first teeth 47a on an internal surface of the chute 45a and first teeth 47b on an internal surface of the chute 45b. Advantageously, the teeth 47a and 47b extend along the chutes 45a and 45b in the longitudinal direction X.

[0042] According to a variant not shown, the main part 33 comprises only one chute.

[0043] The base 34 extends in the longitudinal direction X and is of width £34 greater than a width £33 of the main part 33, the widths being measured in the transverse direction Y. The base 34 bears against the floor 13 in the height direction Z. It is advantageously interposed between the floor 13 and linings 50 in the height direction Z. The linings 50 also bear against the rail 32 in the transverse direction Y, here bearing against bolts 48 mounted on the main part 33.

[0044] The guide system 30 advantageously comprises flaps 52a and 52b. The flap 52a comprises a rod 54a and a fin 55a, and the flap 52b comprises a rod 54b and a fin 55b. The rods 54a and 54b are tubular, of a shape complementary to that of the chutes 45a and 45b respectively and extend along a rod axis, respectively X54a and X54b. The rods 54a and 54b are pivotally mounted in the chutes 45a and 45b respectively, such that the rod axis X54a is aligned with the chute central axis X45a and the rod axis X54b is aligned with the chute central axis X45b. In the example of the figures, the central axis of the chute X45a is merged with the rod axis X54a and the central axis of the chute X45b is merged with the rod axis X54b.The rods 54a and 54b comprise second teeth, respectively 57a and 57b, complementary to the first teeth 47a and 47b, and brake a rotation of the rods 54a and 54b around their respective axis X54a and X54b by cooperation of shapes between the first and the second teeth, on the one hand the first teeth 47a and the second teeth 57a and on the other hand the first teeth 47b and the second teeth 57b.

[0045] The flap 52a is shown outside the chute 45a in Figure 5, for the purpose of illustrating the portions of the elements 45a and 52a.

[0046] The fin 55a is integral with the rod 54a and extends along the rod 54a along the rod axis X54a. Similarly, the fin 55b is integral with the rod 54b and extends along the latter along the rod axis X54b. The fins 55a and 55b also extend in the transverse direction Y and serve to mask a space Ea, respectively Eb, between the main part 33 and the linings 50 and to compensate for any height offset between the main part 33 and the upper faces 51 of the linings 50. Thus, a user can force a rotation of the flaps 52a and 52b around the rod axes, respectively X54a and X54b, for example by applying a force directly to the fins 55a and 55b, in order to bring the fins 55a and 55b into contact with the upper faces 51 of the linings 50.When the vehicle 10 moves on the ground 15, the rods 54a and 54b are fixed relative to the rail 32, thanks to the first and second teeth 47a, 47b, 57a and 57b and do not pivot in the chutes 45a and 45b.

[0047] In a variant not shown, the guidance system comprises only one flap. The guidance system 30 comprises a leg 61, a roller 63, a carriage 65 and a unit 70. The leg 61 is fixed to the seat 20, for example by being screwed to the seat 20. It is opposite one of the rails 32 in the height direction Z.

[0048] In practice, the guidance system comprises at least two legs 61, each arranged opposite one of the rails 32, two rollers 63, two carriages 65 and two assemblies 70, each leg 61 being connected to one of the rollers 63, to one of the carriages 65 and to one of the assemblies 70.

[0049] The roller 63 is pivotally mounted on the leg 61 and is rotatable about a roller axis Y63, parallel to the transverse direction Y. The roller 63 is in contact with the raised surface 44, and rolls along the raised surface 44, when the seat 20 is moved in the longitudinal direction X, or the direction opposite to the longitudinal direction X.

[0050] In a variant of the invention not shown, two rollers can be mounted on the leg 61 and roll respectively on the raised surfaces 44 and 44'.

[0051] The carriage 65 is fixed to the leg 61 by being for example screwed to the leg 61. The carriage 65 extends from the leg 61 and passes through the upper opening 38 to the groove 36 in which the carriage 65 is partially received.

[0052] The carriage 65 is advantageously made of aluminum. Alternatively, other materials, preferably metallic, may be used to make the carriage 65.

[0053] The assembly 70 is housed in the groove 36 and is movable in the groove in the longitudinal direction X, and in the direction opposite to the longitudinal direction X. The assembly 70 comprises two heels 72a and two heels 72b, the two heels 72a being located on one side of the carriage 65 and the other two heels 72b being located on the other side of the carriage 65 in the transverse direction Y. The heels 72a and 72b are visible in dotted lines in Figure 3, and partially visible in Figures 4 and 5.

[0054] In a variant not shown, the crew only comprises two heels facing each other in the transverse direction Y.

[0055] The heels 72a and 72b are fixed to the carriage 65, for example by being screwed to the carriage 65. Advantageously, one of the heels 72a is opposite one of the heels 72b in the transverse direction Y. The same is true for the other heel 72a, which is advantageously opposite the other heel 72b in the transverse direction Y. An assembly comprising one of the heels 72a, the carriage 65 and the heel 72b opposite the heel 72a is of width (2, measured in the transverse direction Y. C\ denotes the width of the upper opening 38, measured in the transverse direction Y. The width (2 is greater than the width ( , in order to prevent the assembly 70 from coming out of the groove 36 upwards.

[0056] The carriage 65 limits the transverse movements of a subassembly formed by the carriage 65, the assembly 70 and the leg 61. Indeed a clearance J1, measured in the transverse direction Y, exists between the carriage 65 and the plates 41 a and 41 b. The clearance J1 is for example less than 1 mm, for example of the order of 0.5 mm. We note J2 a clearance measured in the transverse direction Y between the assembly 70 and the sides of the groove 36. The clearance J2 is in particular measured between one of the heels 72 and one side of the groove 36. This clearance J2 is, for example, of the order of a few millimeters, in particular equal to 3 mm. The clearance J1 is strictly less than the clearance J2.

[0057] The crew 70 further comprises a support plate 74, a locking device 76 and a spring 85.

[0058] The support plate 74 is located between the heels 72a, on the one hand, and 72b, on the other hand, in the longitudinal direction X. It is fixed to the carriage 65, for example by means of screws not shown.

[0059] The locking device 76 comprises a locking plate 78 and a plurality of pins 79, in particular, in the example of the figures, eight pins 79, four first pins 79a and four second pins 79b.

[0060] The locking plate 78 is located, in the height direction Z, between the support plate 74 and the upper opening 38. The locking plate 78 is opposite the upper opening 38 and the plates 41a and 41b in the height direction Z. The locking plate 78 is mounted on the carriage 65, so as to be fixed to the carriage 65 in the longitudinal directions X and transverse directions Y, while being movable in translation relative to the carriage 65, in the height direction Z.

[0061] The pins 79a and 79b are fixed to the locking plate 78. In the example of the figures, each first pin 79a is opposite the plate 41a and each second pin 79b is opposite the plate 41b, in the height direction Z. The pins 79a and 79b are advantageously made of steel.

[0062] As shown in Figures 4 and 5, each first pin 79a includes a head 81a and a body 82a, and each second pin 79b includes a head 81b and a body 82b. The bodies 82a and 82b pass through the locking plate 78 in the height direction Z, so that the bodies 82a and 82b are on the side of the locking plate 78 opposite the plates 41a and 41b in the height direction Z, partially above the locking plate 78, and the heads 81a and 81b are beyond the locking plate 78 relative to the bodies 82a and 82b, below the locking plate 78. Advantageously and as visible in FIG. 3, the first pins 79a are aligned with each other in the longitudinal direction X, and the second pins 79b are aligned with each other in the longitudinal direction X.Advantageously, the first pins 79a are each opposite one of the second pins 79b in the transverse direction Y.

[0063] Generally, the pins 79a are configured to cooperate with the receiving orifices 43a and the pins 79b are configured to cooperate with the receiving orifices 43b. The pins 79a and 79b are notably spaced apart so that they can all cooperate together each with one of the receiving orifices 43a or 43b. For this purpose, each pin 79a is spaced apart from the adjacent pin 79a by the distance d, and each pin 79b is spaced apart from the adjacent pin 79b by the distance d'.

[0064] The locking device 76 is configured to move between two configurations: a locked configuration and a free configuration.

[0065] In the locked configuration, visible in Figure 5, the locking plate 78 is close to the plates 41a and 41b such that each pin 79a and 79b is engaged in one of the orifices 43a and 43b. In particular, in the example of the figures, the bodies 82a are each partially received in an orifice 43a and the bodies 82b are each partially received in an orifice 43b. In the locked configuration, the locking device 76 thus blocks the translation of the seat 20 in the longitudinal direction X and in the direction opposite to the longitudinal direction X.The forces exerted by the pins 79a and 79b on the plates 41a and 41b, more particularly at the level of the orifices 43a and 43b, for example due to vibrations when the vehicle 10 is in motion, are distributed, thanks to the locking plate 78, over several orifices 43a and 43b, on either side of the upper opening 38, thus limiting deformation of the plates 41a and 41b and of the receiving orifices 43a and 43b.

[0066] In the free configuration, visible in figure 4, the pins 79a and 79b are disengaged and at a distance from the orifices 43a and 43b in the height direction Z. In the example of the figures and advantageously, the locking plate 78 is at a distance from the plates 41a and 41b so that the heads 81a and 81b are in abutment against the support plate 74 in the height direction Z.

[0067] The spring 85 is fixed to the support plate 74 and exerts a force on the locking plate 78 oriented in the height direction Z, which tends to return the locking device 76 to the locked configuration. Advantageously, and as shown in Figures 4 and 5, the spring 85 is a conical compression spring.

[0068] The heels 72a and 72b are intended to provide a stop against the plates 41a and 41b, on the one hand during normal use of the seat 20 to prevent it from coming out of the rail 32 and tipping over, but also during a significant force exerted vertically on the seat 20, such as during an accident for example. However, in the event of a significant force in the height direction Z, when the locking mechanism 76 is in the locked configuration, the pins 82a and 82b, fixed together along Y by means of the locking plate 78, and housed respectively at 43a and 43b, positively prevent the upper opening 38 from widening in the transverse direction Y, that is to say to prevent an increase in the width C\, and therefore prevent the carriage 65 from being released from the rail 32 in an untimely manner.

[0069] Particularly advantageously, the guide system 30 comprises an unlocking mechanism 90, visible in FIG. 2. The unlocking mechanism 90 comprises a bar 91, and at least one rod 92.

[0070] Each rod 92 is connected to the bar 91 and to the locking device 76, more particularly to the locking plate 78. When the user actuates the bar 91, for example by pulling on it, the rod 92 exerts a force on the locking plate 78 in the direction opposite to the height direction Z, greater than the force exerted by the spring 85. The locking plate 78 is then moved downwards and goes into the free configuration. The user can thus move the seat 20 along the rail 32, until reaching the approximately desired position. He then releases the bar 91. The rod 92 then no longer exerts any force on the locking plate 78 which, under the effect of the spring 85, translates in the height direction Z. The bodies 82a and 82b of the pins 79a and 79b, driven by the pressure of the spring 85, come into contact with a lower face of the plates 41a and 41b.The user freely moves the seat 20 forward or backward in the longitudinal direction X, by a distance which is at most equal to one of the distances d or d', until the pins 79a and 79b automatically become housed in the orifices 43a and 43b, thanks to the pressure of the spring 85, and automatically passes into the locked configuration, thus blocking the translation of the seat 20 in the longitudinal direction X, or the direction opposite to the longitudinal direction X.

[0071] In practice and as shown in Figure 2, the unlocking mechanism 90 comprises two rods 92, one for each locking device 76.

[0072] Optionally, the guide system 30 further comprises two masking seals 95a and 95b, fixed to the rail 32 on either side of the upper opening 38 in the transverse direction Y. The masking seals 95a and 95b extend in the longitudinal direction X, cover the upper opening 38 and are elastically deformable. A portion of the masking seals 95a and 95b is in contact with the carriage 65. The portion of the masking seals 95a and 95b in contact with the carriage 65 is elastically deformed, and the remainder of the masking seals is not deformed and covers the upper opening 38, the masking seals 95a and 95b then overlapping above this opening. This facilitates the movement of the carriage 65 and thus of the seat 20 along the rail 32 while protecting the opening 38, which could be obstructed by unwanted objects.

[0073] Any feature described for one embodiment or variation in the foregoing may be implemented for the other embodiments and variations described above, as long as technically feasible.

Claims

CLAIMS 1. A guide system (30), for a seat (20) of a vehicle (10), the system (30) comprising: a rail (32) extending on a floor (13) of the vehicle (10) in a longitudinal direction (X), the rail (32) comprising: o a groove (36), extending in the longitudinal direction (X); o an upper opening (38) extending along the groove (36) in the longitudinal direction (X); o two plates (41 a, 41 b), extending along the upper opening (38) in the longitudinal direction (X) and arranged on either side of the upper opening (38) in a transverse direction (Y), each plate (41 a, 41 b) being provided with a plurality of receiving orifices (43a, 43b) arranged in the longitudinal direction (X); - a carriage (65), connected to the seat (20) of the vehicle (10), passing through the upper opening (38) and movable in the upper opening (38) in the longitudinal direction (X); - a device (70), arranged in the groove (36), movable in the groove (36) in the longitudinal direction (X), the device (70) comprising two heels (72a, 72b), fixed on either side of the carriage (65) in the transverse direction (Y), a width (Æ>) of the heels (72a, 72b) and of the carriage (65), measured in the transverse direction (Y), being greater than a width (^1 ) of the upper opening (38) measured in the transverse direction (Y), characterized in that the device (70) further comprises: - a support plate (74), fixed to the carriage (65); and - a locking device (76) comprising: o a locking plate (78), movable in translation relative to the carriage (65) in a height direction (Z), located between the support plate (74) and the upper opening (38) in the height direction (Z), and o a plurality of pins (79a, 79b), the pins (79a, 79b) being fixed on the locking plate (78), the plurality of pins (79a, 79b) comprising at least a first pin (79a) and a second pin (79b), the first pin (79a) being opposite one of the plates (41 a, 41 b) in the height direction, the second pin (79b) being opposite the other plates (41 a, 41 b) in the height direction (Z), the locking device (76) being configured to move between a locked configuration in which each pin (79a, 79b) is engaged in one of the receiving orifices (43a, 43b) and a free configuration in which the pins (79a, 79b) are disengaged from the receiving orifices (43a, 43b) in the height direction (Z); and - a spring (85), fixed to the support plate (74), exerting on the locking plate (78) a force tending to return the locking device (76) to the locked configuration.

2. System (30) according to claim 1, in which each pin (79a, 79b) comprises a head (81a, 81b) and a body (82a, 82b), the body (82a, 82b) passing through the locking plate (78) in the height direction (Z), and in which, when the locking device (76) is in the locked configuration, the body (82a, 82b) of each pin (79a, 79b) is partially received in one of the receiving orifices (43a, 43b).

3. System (30) according to any one of the preceding claims, in which, for each plate (41 a, 41 b), each orifice (43a, 43b) is spaced from the adjacent orifice (43a, 43b) by the same distance (d, d') measured in the longitudinal direction (X), the locking device comprises several first pins (79a) and several second pins (79b), and the first pins (79a) on the one hand and the second pins (79b) on the other hand are spaced by the same distance (d, d') as the orifices (43a, 43b).

4. System (30) according to any one of the preceding claims, in which the system (30) comprises eight pins (79a, 79b), four first pins (79a) being opposite one of the plates (41 a, 41 b) in the height direction (Z), four second pins (79b) being opposite the other of the plates (41 a, 41 b) in the height direction (Z) and, each second pin (79b) being opposite one of the first pins (79a) in the transverse direction (Y).

5. System (30) according to any one of the preceding claims, wherein the system (30) further comprises an unlocking mechanism (90), configured to switch the locking device (76) from the locked configuration to the free configuration in order to move the seat 20 in the longitudinal direction (X) or in the direction opposite to the longitudinal direction (X).

6. System (30) according to any one of the preceding claims, wherein the rail (32) comprises at least one raised surface (44) in the height direction (Z) relative to the upper opening (38), the raised surface (44) extending along the upper opening (38) in the longitudinal direction (X), the system (30) further comprising a leg (61), fixed to the seat (20) and by means of which the carriage (65) is fixed to the seat (20), and a roller (63), fixed to the leg (61), in contact with the raised surface (44) and capable of pivoting about a roller axis (Y63) to roll on the raised surface (44).

7. System (30) according to any one of the preceding claims, the system (30) further comprising two masking seals (95a, 95b), fixed to the rail (32) and arranged on either side of the upper opening (38) in the transverse direction (Y), the masking seals (95a, 95b) being configured to be elastically deformed by the carriage (65) when in contact with the carriage (65), and to cover the upper opening (38) otherwise.

8. System (30) according to any one of the preceding claims, wherein the rail (32) comprises at least one chute (45a, 45b), centered on a central axis (X45a, X45b) parallel to the longitudinal direction (X), and the system (30) further comprises a flap (52a, 52b), the flap (52a, 52b) comprising: - a rod (54a, 54b), tubular, extending along a rod axis (X54a, X54b), the rod (X54a, X54b) being pivotally mounted in the chute (45a, 45b), with its rod axis (X54a, X54b) aligned with the central axis of the chute (X45a, X45b); - a fin (55a, 55b), integral with the rod (54a, 54b) and extending along the rod (54a, 54b) along the rod axis (X54a, X54b), the flap (52a, 52b) being configured to pivot in the chute (45a, 45b) around the rod axis (X45a, X45b), in order to bring the fin (55a, 55b) into contact, along the height direction (Z), with a lining (50) arranged on the floor (13) of the vehicle, next to the rail (32) along the transverse direction (Y).

9. System (30) according to claim 8 in which the chute (45a, 45b) comprises first teeth (47a, 47b) and the rod (54a, 54b) comprises second teeth (57a, 57b), the rod (54a, 54b) being braked in rotation about the rod axis (X54a, X54b) by cooperation of shapes between the first and second teeth (47a, 47b, 57a, 57b).

10. System (30) according to any one of the preceding claims, in which the rail (32) comprises two sections (32a, 32b), aligned in the longitudinal direction (X), the sections (32a, 32b) being connected to each other by a fishplate (53) extending in the longitudinal direction (X), housed in the two sections (32a, 32b).

11. Vehicle (10), in particular a motorhome, comprising a floor (13), a seat (20) and the system (30) according to any one of the preceding claims which guides the seat (20) relative to the floor (13).

Images