Sliding device of vehicle seat

Abstract

The invention relates to a sliding device (10) for a vehicle seat (15), comprising: a fixed profile (20) extending in a longitudinal direction (X); a movable profile (25) slidably mounted on the fixed profile in the longitudinal direction, the movable profile having an upper wall (50) delimited by two wings (55A, 55B), each wing comprising an inner surface (56A, 56B) facing the upper wall (50) and an outer surface (57A, 57B) opposite the inner surface in the transverse direction (Y); a bracket (30) extending in the height direction (Z), the bracket being welded to the movable profile. The bracket is attached to the movable profile by at least one welding point (85) formed between a receiving portion (75) of the seat and the movable profile (25) from an upper edge (77) of a contact portion (65) on an inner surface (70) side of the contact portion (65).

Description

TECHNICAL FIELD

[0001] The present invention relates to a sliding device for a vehicle seat and a method for manufacturing such a sliding device.

[0002] More specifically, the present invention relates to a sliding device for a vehicle seat, comprising:

[0003] - a fixed profile, which is intended to be attached to the floor of the vehicle and extends in the longitudinal direction,

[0004] - a movable profile, which is slidably mounted on the fixed profile in the longitudinal direction, the movable profile having an upper wall extending in the longitudinal direction, the upper wall being delimited by two wings extending in the height direction perpendicular to the longitudinal direction below the upper wall,

[0005] - at least one bracket, which extends in the height direction and is welded to the movable profile. BACKGROUND ART

[0006] In the technical field of vehicle seats, it is known to mount a seat on one or more sliding devices, for example to allow the seat to slide forward and backward relative to the vehicle chassis, in particular relative to the floor, for example for the purpose of user posture comfort.

[0007] To this end, each sliding device comprises a fixed profile on the vehicle floor and a movable profile slidably mounted on the fixed profile.

[0008] The frame of the seat is mounted on a bracket attached to the movable profile.

[0009] It is also possible to provide a bracket attached to the movable profile for each seat device, at least a part of which must be able to slide with the seat, such as a seat belt buckle.

[0010] In all cases, the brackets may be subject to considerable mechanical stress. Therefore, it is particularly important that the attachment of the brackets to the movable profile has a sufficiently high and reproducible quality.

[0011] To this end, the connection between the bracket and the movable profile is usually achieved by means of a weld, in particular a weld formed with a filler material.

[0012] However, the shape of the bracket and / or the movable profile is usually such that the welding area is difficult to access, which complicates the attachment of the bracket to the profile. In addition, welding may produce "spatter", i.e., material fragments may be ejected towards the wings of the movable profile and / or towards the fixed profile and damage the subsequent operation of the sliding device connection and its service life.

[0013] For example, in the case where two profiles form a ball bearing slide device, such splashes may reach, for example, the balls or the guide rails on which these balls slide, and modify the surfaces of these elements which are usually pre-polished, or be inserted between these elements. It should thus be understood that the subsequent sliding will not be optimal.

[0014] One of the aims of the invention is to propose a slide device for a motor vehicle seat, the support of which is welded to a movable profile in a simple, reliable and reproducible manner and the service life of which is increased. Summary of the Invention

[0015] To this end, the invention relates to a slide device for a vehicle seat, comprising:

[0016] a) a fixed profile intended to be attached to the floor of the vehicle and extending in a longitudinal direction,

[0017] b) a movable profile slidably mounted on the fixed profile in the longitudinal direction, the movable profile having an upper wall extending in the longitudinal direction, the upper wall being delimited by two wings extending towards the fixed profile in a height direction perpendicular to the longitudinal direction below the upper wall, each wing comprising an inner surface facing the upper wall and an outer surface opposite the inner surface in a transverse direction substantially perpendicular to the longitudinal direction and the height direction,

[0018] c) at least one support extending in the height direction, welded to the movable profile and comprising i) a contact portion comprising an inner surface placed in contact with at least a part of the outer surface of one of the wings of the movable profile, and ii) a portion for receiving a seat frame or seat equipment, the receiving portion extending above the upper edge of the contact portion in the height direction, at least a part of the receiving portion extending above the upper wall in the height direction,

[0019] The support is attached to the movable profile by at least one welding point formed between the receiving portion and the movable profile from the upper edge of the contact portion on the inner surface side of the contact portion.

[0020] The positioning of the inner surface of the contact portion of the support along the outer surface of the corresponding wing allows a ridge corresponding to the upper edge of the inner surface to be formed in the slide device. This ridge is delimited on the one hand by an element of the movable profile located above the upper edge and thus by at least the upper wall and optionally a part of the corresponding wing, and on the other hand by the receiving portion, the two edges forming a right angle or a protruding angle therebetween in the vicinity of the ridge.

[0021] The proximity of the welding machine at the edge is more easily accessible from outside the support and the movable profile.

[0022] Thus, the weld between the bracket and the wing can be formed in a simple, reproducible and robust manner.

[0023] Furthermore, the edges of the ridge form a surface that protects against spatter. Any material projectiles caused during welding are blocked by the receiving part and / or the upper wall and / or the corresponding wing, such that these projectiles do not affect the elements forming the sliding device connection between the fixed profile and the movable profile.

[0024] Thus, the sliding device has improved operation and a longer service life.

[0025] According to other advantageous aspects of the invention, the sliding device comprises one or more of the following features taken individually or in all technically feasible combinations:

[0026] - The bracket comprises a support portion extending in the transverse direction from the contact portion and / or from the receiving portion, the support portion being positioned above the upper wall in the height direction and in contact with at least a portion of the upper wall, the support portion comprising at least one through hole providing a passage from the outside of the sliding device to at least a portion of the upper edge of the inner surface of the contact portion;

[0027] - The sliding device comprises at least one additional weld point formed between the support portion and the upper wall above the upper wall;

[0028] - The cross-section of the receiving portion of the bracket taken in the transverse plane is selected from a straight cross-section, an L-shaped cross-section and a U-shaped cross-section;

[0029] - The sliding device comprises a plurality of weld points formed between the receiving portion and the movable profile from the upper edge of the inner surface of the contact portion, these weld points being distributed along the upper edge in the longitudinal direction;

[0030] - The sliding device comprises a plurality of brackets spaced apart in the longitudinal direction.

[0031] - The sliding device comprises at least two brackets, with at least one of the brackets being supported by each wing.

[0032] The invention also relates to a method for installing a sliding device for a vehicle seat, which comprises:

[0033] a) Providing:

[0034] i) A fixed profile intended to be attached to the vehicle floor and extending in the longitudinal direction;

[0035] ii) A movable profile intended to be slidably mounted on the fixed profile in the longitudinal direction, the movable profile having an upper wall extending in the longitudinal direction, the upper wall being bounded by two wings extending towards the fixed profile in the height direction perpendicular to the longitudinal direction below the upper wall;

[0036] iii) At least one bracket extending in the height direction, the bracket comprising:

[0037] - A contact portion, the inner surface of which is bounded by an upper edge and is configured to be placed in contact with at least a portion of the outer surface of one of the wings of the movable profile, the outer surface being located on the opposite side of the upper wall with respect to the wing in a transverse direction orthogonal to the longitudinal and height directions, opposite to the inner surface of the wing facing the upper wall, and

[0038] - A receiving portion for the frame of the seat or seat equipment, the receiving portion extending above the upper edge of the contact portion in the height direction;

[0039] b) Positioning the inner surface of the contact portion in contact with at least a portion of the outer surface of the corresponding wing;

[0040] c) Forming at least one welding point from the upper edge between the receiving portion and the movable profile;

[0041] d) Attaching the fixed profile to the floor of the vehicle;

[0042] e) Assembling the movable profile and the fixed profile in a sliding manner in the longitudinal direction.

[0043] In another advantageous aspect of the invention, the formation of at least one welding point includes providing a filler material. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The invention will become clearer upon reading the following description given only by way of non - limiting example and with reference to the accompanying drawings, in which:

[0045] Figure 1 is a schematic side view of a vehicle seat;

[0046] Figure 2 is a cross - sectional view in a transverse plane (YZ) of a first embodiment of the sliding device according to the invention;

[0047] Figure 3 is Figure 2 an enlarged view at the welding point;

[0048] Figure 4 is a three - dimensional view of a second embodiment of the sliding device according to the invention;

[0049] Figure 5 is in Figure 3 a separate view of the bracket of the sliding device in a cross - sectional view in the transverse plane (YZ);

[0050] Figure 6Is a cross-sectional view in the transverse plane (YZ) of a third embodiment of the sliding device according to the present invention;

[0051] Figure 7 Is Figure 6 An enlarged view at the welding point;

[0052] Figure 8 Is a three-dimensional view of a part of a fourth embodiment of the sliding device according to the present invention;

[0053] Figure 9 Is Figure 8 A cross-sectional view in the transverse plane (YZ) of the sliding device; and

[0054] Figure 10 Is Figure 9 An enlarged view at the welding point. Detailed implementation mode

[0055] Refer to Figure 1 The sliding device 10 of the vehicle seat 15 will be described below.

[0056] The vehicle (not shown) is, for example, a motor vehicle, but the sliding device 10 according to the present invention can be used for seats of other types of vehicles, such as marine or aircraft vehicles.

[0057] Figure 1 The seat 15 in

[0058] very schematically includes a seat base 16 and a backrest 17.

[0059] The seat base 16 is slidably mounted on the vehicle floor 18 in the longitudinal direction X by means of one or more sliding devices 10. For a seat facing the front of the vehicle, the longitudinal direction X corresponds, for example, to the front-rear direction of the vehicle.

[0060] Each sliding device 10 includes a fixed profile 20 and a movable profile 25, the movable profile 25 being slidably mounted on the fixed profile 20 in the longitudinal direction X, and the seat base 16 being attached to the movable profile 25 by welding to at least one bracket 30 of the movable profile 25.

[0061] The fixed profile 20 is intended to be attached (in particular fixed) to the vehicle floor 18.

[0062] The fixed profile 20 extends in the longitudinal direction X.

[0063] In Figure 4 And Figure 8In a specific embodiment shown in more detail, the fixed profile 20 is in the form of a concave profile formed from a metal sheet bent and cut into a substantially U-shape.

[0064] In this case, the fixed profile 20 includes a base 35 extending in the longitudinal direction X and the transverse direction Y for attachment to the base plate 18, and two side walls 40A, 40B extending from the base 35 substantially orthogonally to the base 35 in the height direction Z. When the sliding device is attached to the base plate of the vehicle, for a seat facing the front of the vehicle, the transverse direction Y corresponds, for example, to the vehicle width direction, and the height direction Z corresponds to the vehicle height direction.

[0065] Two re-entrant troughs 45A, 45B of the fixed profile 20 cause the side walls 40A, 40B to extend towards the inside of the sliding device 10 and towards the base 35.

[0066] The fixed profile 20 thus forms a concave profile within which the movable profile 25 is nested and slidably mounted in the longitudinal direction X.

[0067] In the example shown, the movable profile 25 is in the form of a convex profile formed from a bent and cut metal sheet, substantially in an inverted U-shape.

[0068] When the sliding device is attached to the base plate of the vehicle, the movable profile 25 includes an upper wall 50 extending in the longitudinal direction X and the transverse direction Y, and two wings 55A, 55B extending substantially orthogonally to the base 35 in the height direction Z towards the fixed profile 20 (and thus below the upper wall 50).

[0069] Each wing 55A, 55B is defined by a respective inner surface 56A, 56B facing the upper wall in the transverse direction Y and a respective outer surface 57A, 57B opposite (and thus facing away from the inverted U). Thus, the inner surfaces 56A, 56B extend relative to each other in the transverse direction Y and face the inside of the U.

[0070] The wings 55A, 55B extend outwards from the inverted U through respective folding wings 60A, 60B.

[0071] Each of the folding wings 60A, 60B is inserted into the space formed between the respective side wall 40A, 40B and the respective re-entrant trough 45A, 45B of the fixed profile 20 in order to ensure the connection of the sliding device between the fixed profile 20 and the movable profile 25.

[0072] Rolling elements (not shown) (e.g., balls) are advantageously inserted between the flap wings 60A, 60B and the side walls 40A, 40B, and / or between the flap wings 60A, 60B and the return grooves 45A, 45B, to ensure the sliding of the movable profile 25 on the fixed profile 20.

[0073] At least one bracket 30 is welded to the movable profile 25 to provide a connection between the seat base 16 and the movable profile 25 or to receive seat equipment to be moved together with the seat base 16.

[0074] Thus, advantageously, one or more sliding devices 10 on which the seat base 16 is mounted may include one or more additional brackets 30, each additional bracket 30 being configured to receive one or more seat equipment, such as fastening buckles for seat belts, lifting bars, sensors, and connector supports, etc.

[0075] Each bracket 30 extends in the height direction Z and includes a contact portion 65, the inner surface 70 of the contact portion 65 being placed in contact with at least a part of the outer surfaces 57A, 57B of the wing portions 55A, 55B welded thereto.

[0076] The bracket 30 further includes a receiving portion 75 for the frame of the seat 15 and / or seat equipment, the receiving portion 75 extending in the height direction Z from the upper edge 77 of the contact portion 65 on the side opposite to the fixed profile 20. In other words, the receiving portion 75 extends above the contact portion 65 and projects from the upper wall 50 of the movable profile 25 in the height direction Z.

[0077] Thus, the receiving portion 75 forms a convex portion configured to engage with a corresponding concave portion included in the frame of the seat 15 and / or the corresponding seat equipment or an attachment surface of the frame of the seat 15 and / or the corresponding seat equipment.

[0078] In Figure 2 the illustrated embodiment, the cross-section of the receiving portion 75 of the bracket 30 in the transverse plane (i.e., in the plane YZ orthogonal to the longitudinal direction X) is substantially straight.

[0079] Advantageously, as Figure 2 shown, the cross-section of the receiving portion 75 of the bracket 30 has a protrusion 80 between two straight portions 80A and 80B, and the straight portions 80A and 80B are thus offset from each other more or less in the transverse direction Y. This arrangement allows the bracket 30 to engage with a concave portion offset from the upper wall 50 in the transverse direction Y.

[0080] The bracket 30 is welded to the movable profile 25 by at least one welding point 85 formed between the receiving portion 75 and the movable profile 25 from the upper edge 77 of the contact portion 70 on the inner surface side of the contact portion.

[0081] The welding points 85 can be formed by laser welding or by a filler material, in particular MAG (Metal Active Gas), CMT (Cold Metal Transfer), etc.

[0082] The number, position and / or surface area of the welding points 85 are advantageously selected based on the shape of the receiving part 75 and / or the type of seat or device to which the receiving part 75 is intended to be joined.

[0083] The welding points 85 are advantageously located at least at one end of the bracket 30 in the longitudinal direction X.

[0084] One or more additional welding points 85 are advantageously located at a distance from the end of the bracket 30 in the longitudinal direction X.

[0085] In Figure 4 the example shown, six welding points 85 each extending substantially in the longitudinal direction X have been distributed in the longitudinal direction X at Figure 5 six welding areas 85A of the bracket 30 shown, which six welding areas 85A extend above the upper edge 77.

[0086] In a particular embodiment, welding points 85 are formed along the entire length of the upper edge 77.

[0087] In Figure 2 and Figure 3 the example shown, the welding points 85 extend between the receiving part 75 and the corresponding wing part 55B. It also extends above the upper wall 50.

[0088] Alternatively, the welding points 85 do not extend above the upper wall 50.

[0089] The installation process of the sliding device 10 comprises the following steps:

[0090] In the supply step, a fixed profile 20, a movable profile 25 intended to be slidably mounted on the fixed profile 20 in the longitudinal direction X, and at least one bracket 30 are provided.

[0091] In the positioning step, the inner surface 70 of the contact part 65 is positioned in contact with the outer surfaces 57A, 57B of the corresponding wing parts 55A, 55B.

[0092] In the welding step, while maintaining this contact tightly, one or more welding points 85 are formed between the receiving part 75 and the movable profile 25 from the upper edge 77 by a welding machine (such as a laser) or a filler material.

[0093] In the attachment step, the fixed profile 20 is attached to the bottom plate 18.

[0094] Advantageously, the attaching step is the step immediately following the supplying step.

[0095] In the assembling step, a movable profile 25 intended to be slidable in a longitudinal direction X is mounted on a fixed profile 20.

[0096] Advantageously, the assembling step is the step immediately following the attaching step and preceding the positioning step.

[0097] Below the upper edge 77 in the height direction Z, the contact portion 65 and the corresponding wings 55A, 55B form a protection portion against ejected spatter. Above the upper edge 77 in the height direction Z, the receiving portion 75 and the upper wall 50 also form a protection portion against ejected spatter. Thus, the risk of such projectiles is significantly reduced as compared to other welding point positions envisaged in the prior art, and more specifically, in the case where the welding point 85 is formed by a filler material.

[0098] Thus, the various elements ensuring the connection of the sliding device, in particular the folding wings 45A, 45B, 60A, 60B and any rolling elements, are protected against such spatter.

[0099] In addition, access to the welding area 85A for forming the welding point 85 is easy because only the receiving portion 75 and the upper wall 50 limit such access and form an angle greater than or equal to 90°. On the contrary, when the welding point is placed below the inverted U of the movable profile 25 as in the prior art, access to the welding area is more difficult because it is restricted by the two wings of the inverted U.

[0100] Thus, the sliding device 10 according to the present invention is easy to manufacture, reproducible and has a high welding quality.

[0101] As Figure 2 shown, if the cross-section of the receiving portion 75 of the bracket 30 has a protrusion 80 between two straight portions 80A and 80B, the protrusion 80 further facilitates access to the welding area 85.

[0102] Since access to the welding area 85A is easy, the welding step can be the last step in the installation method without affecting the correct operation of the sliding device 10.

[0103] For the same reason, an additional bracket 30 can be easily added to the sliding device 10 already mounted on the base plate 18.

[0104] In this case, the additional bracket 30 can be on the same wing 55A, 55B as the first bracket 30 but offset in the longitudinal direction X.

[0105] The first bracket 30 and at least one additional bracket 30 can also be respectively positioned on one of the wings 55A, 55B.

[0106] Finally, the bracket 30 can be adapted to any movable profile 25, provided it has a suitable inner contact surface 70, in particular without the need to machine holes in the movable profile 25.

[0107] Alternatively, as Figure 6 shown, the receiving portion 75 of the bracket 30 has an L-shaped cross-section in the plane YZ orthogonal to the longitudinal direction X.

[0108] This arrangement allows the concave portion intended to engage with the bracket 30 to be positioned at a greater distance from the movable profile 25 in the transverse direction Y.

[0109] As a result, the area where at least one welding point is formed is more easily accessible. Consequently, assembling the sliding device 10 is both easier and more reproducible.

[0110] Advantageously, the brackets 30 are positioned on each wing 55A, 55B.

[0111] In this case, the two brackets 30 are advantageously positioned face to face such that the upper wall 50 and the receiving portion 75 form an assembly for attaching the frame of the seat 15 and / or the equipment of the seat 15 to the movable profile 25, which assembly has a substantially U-shaped cross-section in the plane YZ orthogonal to the longitudinal direction X.

[0112] This arrangement allows the frame of the seat 15 and / or the equipment of the seat 15 to be attached more firmly than with a single bracket having a straight or L-shaped profile, yet without requiring as much material as a bracket having a U-shaped profile for its receiving portion, as will be described later.

[0113] Optionally, the bracket 30 includes a support portion 90 extending in the transverse direction Y from the contact portion 65 and / or the receiving portion 75.

[0114] The support portion 90 is positioned above the upper wall 50 in the height direction Z and contacts at least a portion of the upper wall 50.

[0115] In Figures 8 to 10 the example shown, the support portion 90 extends only from the receiving portion 75.

[0116] In these examples, the support portion 90 contacts the upper wall 50 over the entire width of the upper wall 50 in the transverse direction Y.

[0117] The support portion 90 includes at least one through hole 95 that provides a passage from outside the sliding device 10 to at least a portion of the upper edge 77 of the inner surface 70 of the contact portion 65.

[0118] In this example, the through-opening 95 has a square cross-section in the longitudinal plane XY, which is horizontal when, for example, the sliding device is attached to the floor of a vehicle resting on a horizontal ground. Other forms are also conceivable.

[0119] Advantageously, the length by which the through-opening 95 extends in the longitudinal direction X is approximately the length of the corresponding welding area 85A.

[0120] This arrangement allows for the generation of one or more welding points 85 in the same manner as described above.

[0121] The support part 90 facilitates the positioning of the bracket 30 on the movable profile 25. It also provides additional force transmission to the movable profile 25. Due to the through-opening 95, these advantages are achieved without significantly restricting access to the welding area 85A. Thus, the service life of the sliding device 10 is increased.

[0122] Advantageously, at least one additional welding point 98 is formed between the support part 90 and the upper wall 50 above the upper wall 50.

[0123] The welding point is formed, for example, at an edge of the through-opening 95 that is not above the upper edge 77.

[0124] Advantageously, as Figures 8 to 10 shown, the attachment wing 100 extends from the support part 90 in the transverse direction Y opposite to the receiving part 75. Thus, the support part 90, the receiving part 75 of the bracket 30, and the attachment wing 100 form a bracket for attaching the frame of the seat 15 and / or the equipment of the seat 15, which has a substantially U-shaped cross-section in the plane YZ orthogonal to the longitudinal direction X.

[0125] This arrangement allows for the attachment of the frame of the seat 15 and / or the equipment of the seat 15 to be as secure as with two brackets 30 placed face-to-face as described above, but makes the installation simpler and thus faster.

Claims

1. A sliding device (10) for a vehicle seat (15), comprising: a) a fixing profile (20) intended to be attached to the floor (18) of the vehicle and extending in a longitudinal direction (X), b) a movable profile (25) slidably mounted on the fixed profile (20) in the longitudinal direction (X), the movable profile (25) having an upper wall (50) extending in the longitudinal direction (X), the upper wall (50) being delimited by two wings (55A, 55B) extending below the upper wall (50) in a height direction (Z) perpendicular to the longitudinal direction (X) towards the fixed profile (20), each wing (55A, 55B) comprising an inner surface (56A, 56B) facing the upper wall (50) and an outer surface (57A, 57B) opposite the inner surface (56A, 56B) in a transverse direction (Y) substantially perpendicular to the longitudinal direction (X) and the height direction (Z), c) at least one bracket (30), extending in the height direction (Z), welded to the movable profile and comprising: i) a contact portion (65) comprising an inner surface (70) placed in contact with at least a portion of an outer surface (57A, 57B) of one of the wings (55A, 55B) of the movable profile, and ii) a receiving portion (75) for a seat (15) frame or a device for the seat (15), the receiving portion (75) extending in the height direction (Z) above an upper edge (77) of the contact portion (65), at least a portion of the receiving portion (75) extending in the height direction (Z) above the upper wall (50), The bracket (30) is attached to the movable profile (25) by at least one welding point (85) formed between the receiving portion (75) and the movable profile (25) from the upper edge (77) of the contact portion (65) on the side of the inner surface (70) of the contact portion (65).

2. The sliding device (10) according to claim 1, wherein: The bracket (30) comprises a supporting portion (90) extending from the contact portion (65) and / or from the receiving portion (75) in the transverse direction (Y), The support portion (90) is placed above the upper wall (50) in the height direction (Z) and contacts at least a portion of the upper wall (50), The support portion (90) includes at least one through hole (95) providing access from the exterior of the runner (10) to at least a portion of an upper edge (77) of the inner surface (70) of the contact portion (65).

3. The gliding device (10) according to claim 2, wherein: At least one additional weld point (98) is formed between the support portion (90) and the upper wall (50) above the upper wall (50).

4. The sliding device (10) according to any one of claims 1 to 3, wherein: The receiving portion (75) of the bracket (30) has a cross section taken in the transverse plane (YZ) selected from a straight cross section, an L-shaped cross section and a U-shaped cross section.

5. The sliding device (10) according to any one of claims 1 to 3, comprising a plurality of welding points (85) formed between the receiving portion (75) and the movable profile (25) from an upper edge (77) of the inner surface (70) of the contact portion (65), the welding points (85) being distributed along the upper edge (77) in the longitudinal direction (X).

6. The runner (10) according to any one of claims 1 to 3, comprising a plurality of brackets (30), said brackets (30) being spaced apart in said longitudinal direction (X).

7. A runner (10) according to any one of claims 1 to 3, comprising at least two supports (30), each wing (55A, 55B) supporting at least one of the supports (30).

8. A method for installing a runner (10) of a vehicle seat (15), comprising: a) Provide: i) a fixing profile (20) intended to be attached to the floor (18) of a vehicle and extending in a longitudinal direction (X); ii) a movable profile (25) intended to be slidably mounted on the fixed profile (20) in the longitudinal direction (X), the movable profile (25) having an upper wall (50) extending in the longitudinal direction (X), the upper wall (50) being delimited by two wings (55A, 55B) extending below the upper wall (50) in a height direction (Z) perpendicular to the longitudinal direction (X) towards the fixed profile (20); iii) at least one support (30) extending in the height direction (Z), the support comprising: - a contact portion (65), the inner surface (70) of which is delimited by an upper edge (77) and is configured to be placed in contact with at least a portion of an outer surface (57A, 57B) of one of the wings (55A, 55B) of the movable profile (25), the outer surface (57A, 57B) being positioned on the opposite side of the upper wall (50) relative to this wing in a transverse direction (Y) orthogonal to the longitudinal direction (X) and to the height direction (Z), opposite to the inner surface (56A, 56B) of the wing facing the upper wall (50), and a receiving portion (75) for a frame of a seat (15) or for an equipment of a seat (15), said receiving portion (75) extending in said height direction (Z) above an upper edge (77) of said contact portion (65); b) positioning the inner surface (70) of the contact portion (65) in contact with at least a portion of the outer surface (57A, 57B) of the corresponding wing; c) forming at least one welding point (85) between the receiving portion (75) and the movable profile (25) from the upper edge (77); d) attaching the fixing profile (20) to the floor (18) of a vehicle; e) Assembling the movable profile (25) and the fixed profile (20) in a sliding manner in the longitudinal direction (X).

9. The installation method according to claim 8, wherein: Forming the at least one weld (85) includes providing a filler material.

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