Set including a first bench seat and a second bench seat

Abstract

This disclosure relates to an assembly comprising a first and second bench seat for a vehicle, which may have different configurations, namely three independent sections (e.g., 40%, 20%, and 40%), two independent sections (e.g., 40% and 60%), or a single unit. According to this disclosure: - the side support (S1) belonging to the first bench seat and the side support (S1) belonging to the second bench seat are identical; - the center support (Sc) belonging to the first bench seat and the center support (Sc) belonging to the second bench seat (B2) are identical. Abstract: Figure 1

Description

Title of the invention: Assembly comprising a first bench seat and a second bench seat

[0001] This disclosure relates to an assembly comprising a first bench seat and a second bench seat.

[0002] The first bench seat and the second bench seat are of different configurations, chosen in particular from a seat: - in one piece, - in two parts (in particular 1 / 3 & 2 / 3 or 40% & 60%), or - in three parts (1 / 3 & 1 / 3 & 1 / 3 or 40%, 20%, 40%).

[0003] Regardless of the seating configurations, the different seats share identical seat supports, advantageously identical (first) lateral supports, identical central supports, and possibly identical second lateral supports. The first lateral supports and the second lateral supports may be identical or different.

[0004] Such an assembly allows the implementation of an assembly process enabling the assembly of the different bench configurations, advantageously limiting the number of seat support references for the assembly of the seating system, and therefore for the production of the benches.

[0005] Also, the present disclosure is still related to a method of assembling an assembly according to the present disclosure, and with a view to obtaining the first bench seat and the second bench seat which are of different configurations, and from the same set of identical side supports and the same set of central supports, or possibly from the same set of second side supports.

[0006] Such a process can be advantageously implemented on a motor vehicle production line, particularly to accommodate different seat configurations. Depending on the orders, it becomes easy to respond to different seat configurations, especially for the same vehicle model, or even for different vehicle models. technical field

[0007] The present disclosure falls within the domain of motor vehicle seats, which are typically found in the second row of the vehicle. Previous technique

[0008] Various bench seat configurations are thus known, and in particular: - a first seating configuration, in one piece, which comprises, along a longitudinal direction of the seat, oriented transversely to the vehicle, a a single mattress supported by a single backing, which can typically be a wire mesh backing overmolded with PU foam for the padding. Such a one-piece seating configuration is known, for example, from document KR101222847, and can be adapted to seat three occupants, sitting side by side on the bench seat; - a second seating configuration, in two distinct, independent parts, along the longitudinal direction of the seat, such as, for example, a first seating part representing one-third (or 40%) of the seat length, configured to accommodate a single occupant, and a second seating part representing the remaining two-thirds (or 60%) of the seat, configured to accommodate two occupants, side by side. The two cushions of the two seating parts are typically supported by specific supports, namely that a first specific rigid support is configured to support the cushion of the first part, and a second, separate, specific rigid support of larger dimensions is configured to support the cushion of the second part; - a third seating configuration, in three distinct parts, each intended to accommodate an occupant, representing for example each 1 / 3 of the seat, or respectively 40% & 20% & 40% of the seat, depending on the longitudinal direction of the seat.

[0009] Documents US6386629B1 or EP3718818 are examples of vehicle bench seats.

[0010] The same model of motor vehicle can be equipped with different bench seat configurations, namely at least the first and second configurations, or the second and third configurations, or the first and third configurations, or even all three configurations. On the vehicle's production line, this necessitates logistics and line organization that allow assembly from one or more of these configurations, typically depending on the options selected.

[0011] According to the inventors' findings, and according to the known state of the art, the technical solutions to meet the three configurations respectively are distinct and specific to the different configurations, which generates a large number of part references to meet the different seat configurations, and thus complicates their manufacture on the vehicle assembly line. Summary

[0012] This disclosure improves the situation.

[0013] According to a first aspect, an assembly is proposed comprising a first bench seat and a second bench seat for a vehicle, and in which: - the first bench seat comprising: —a seat support system comprising a central support, and a lateral support arranged laterally to the next central support, a longitudinal direction of the seat, the central support and the lateral support formed by parts distinct from each other and — a padding system comprising a common lining, jointly covering an upper surface of the central support and an upper surface of said lateral support, said common lining being placed on the central support and the lateral support, and in which: -the second bench seat comprising: — a seat support system, comprising a central support, and a lateral support arranged laterally to the central support along a longitudinal direction (DL) of the seat, the central support and the lateral support being formed from parts distinct from each other and — a padding system comprising at least two layers of padding, including one individual layer of padding covering an upper surface of said at least one lateral support, placed on the lateral support, and another separate layer of padding covering an upper surface of the central support, and placed on the central support, and wherein: - The side support belonging to the first bench seat and the side support belonging to the second bench seat are identical, - the central support belonging to the first bench seat and the central support belonging to the second bench seat are identical.

[0014] The features described in the following paragraphs may optionally be implemented independently of each other or in combination with each other:

[0015] According to one embodiment of said assembly, the lateral support of the first bench seat is a first lateral support, and in which the support system includes a second lateral support, arranged with respect to the central support, along the longitudinal direction of the seat, on the side opposite the first lateral support and / or in which the lateral support of the second bench seat is a first lateral support, and in which the support system includes a second lateral support, arranged with respect to the central support, along the longitudinal direction of the seat, on the side opposite the first lateral support.

[0016] In particular, the lateral support and the second lateral support may be identical, or distinct, in particular said lateral support and said second lateral support being symmetrical with respect to a vertical plane, typically the median plane of the support central. Depending on one possibility, the second lateral support of the first bench seat and the second lateral support of the second bench seat can be identical.

[0017] According to one embodiment of said assembly, the common padding of the first bench covers the entire support surface of the seating support system comprising, along the longitudinal direction of the seat, respectively, the upper surface of the first lateral support, the upper surface of the central support and an upper surface of the second lateral support.

[0018] According to another embodiment of said assembly, the first bench seat comprises a seat in two independent parts, along the longitudinal direction of the seat, in particular two-thirds / one-third or 40%&60%, the common padding of the first bench seat covering the upper surface of the first lateral support and the upper surface of the central support, an individual padding covering an upper surface of the second lateral support.

[0019] According to one embodiment of said assembly, the second bench seat comprises a three-part independent seat, following the longitudinal direction of the seat, in particular one third / one third / one third or 40%&20%&40%, the upholstery system comprising the individual padding placed on the first lateral support, a second individual padding placed on the central support, but also a third individual padding placed on the second lateral support.

[0020] According to one embodiment of said assembly, the second bench seat is a two-part independent seat, along the longitudinal direction of the seat, in particular one third / two thirds, or 40%&60%, the upholstery system comprising the individual padding placed on the first lateral support, the separate padding being a common padding jointly covering the upper surface of the central support and the upper surface of the second lateral support.

[0021] According to one embodiment, said assembly may have: / a / a cover system for the first bench seat comprising: - a common cover covering the common padding of the first bench seat, fixed jointly to the lateral support and the central support, and optionally to the second lateral support, or alternatively, - a common cover covering the common padding of the first bench seat, fixed jointly to the lateral support and the central support and an individual cover covering the individual padding resting on the second lateral support and / or having / b / a cover system for the second bench seat: - an individual cover, covering the individual padding and fixed to the lateral support, and an individual cover, covering the individual padding resting on the central support, and fixed to the central support, and possibly an individual cover covering the individual padding in support of the second lateral support - an individual cover covering the individual padding and fixed to the lateral support and a common cover covering the common padding in support of the central support and in support of the second lateral support.

[0022] For this purpose, the lateral support, the central support, and where applicable the second lateral support are provided with a hooking system configured to hook a cap, such as hooking elements projecting below the lateral, central and where applicable second lateral supports, on the periphery of the supports, or a hooking groove.

[0023] According to one embodiment of said assembly, the lateral support, the central support, and where applicable the second lateral support, can respectively be plastic parts, typically injection molded.

[0024] According to one embodiment of said assembly, the lateral support and the central support extend lengthwise, in a first direction, from front to back of the seat, in a direction transverse to the longitudinal direction of the seat, and from one lateral edge to another lateral edge, in the longitudinal direction of the seat, and wherein the lateral support and the central support covered by the common padding are joined together by one or more mechanical connecting members, and / or the central support and the second lateral support are joined together by one or more mechanical connecting members, in particular when covered by a common padding.

[0025] According to one embodiment of said assembly, the lateral support and the central support extend lengthwise, in a first direction, from front to back of the seat, in a direction transverse to the longitudinal direction of the seat, and from one lateral edge to another lateral edge, in the longitudinal direction of the seat, and wherein the first bench and / or the second bench includes a support shaft, extending in the longitudinal direction, and wherein said lateral support, said central support, and where applicable the second lateral support, each include a housing open on a rear portion of the support, extending in the longitudinal direction of the seat, receiving said support shaft in a fit, preferably allowing said support to pivot around the support shaft.

[0026] This disclosure also relates, according to a second aspect, to a method of assembling a first bench seat and a second bench seat of an assembly according to this disclosure, comprising / A / Provide one set of identical side supports, and one set of identical center supports and in which the assembly of the seat of the first bench comprises: - / B 1 / Take one of the game's side supports and one of its central supports, and if necessary, take a second side support. - / B2 / Install a common padding covering the lateral support and the central support, and where applicable the second lateral support, or where applicable cover the second lateral support with individual padding, and in which the assembly of the seat of the second bench seat includes: - / Cl / Take one of the game's side supports and one of the game's central supports, and if necessary take a second side support (S12), - / C2 / Place an individual pad covering the lateral support, and place a pad covering the central support, in particular an individual pad and place an individual pad on the second lateral support 5, or place a common pad covering the central support and the second lateral support.

[0027] According to one embodiment of the process according to this disclosure, the assembly of the first bench seat comprises, successively at / B2 / : - / B3 / Cover the common padding with a common cap and fix the common cap to said lateral support and to the central support, and where applicable fix the common cap to the second lateral support, or where applicable cover the individual padding with an individual cap and fix the individual cap to the second lateral support and in which the assembly of the second bench seat comprises successively at / C2 / : - / C3 / Cover the individual padding of the lateral support with an individual cap and fix the individual cap to the lateral support, cover the padding of the central support with a cap, and fix the cap to the central support, in particular cover the individual padding of the second lateral support, and fix the individual cap, or cover the common padding of the central support and the second lateral support with a common cap and fix the common cap to said central support and to the second lateral support. Brief description of the drawings

[0028] Other features, details and advantages will become apparent from reading the detailed description below and from analyzing the accompanying drawings, in which: Fig. 1

[0029] [Fig. 1] shows an embodiment of a bench seat (first or second) of an assembly according to this disclosure (the padding being removed, not shown) comprising: - a seat comprising a support system comprising successively, along a longitudinal direction of the seat, a first lateral support intended to receive a first occupant representing 40% of the seat, a central support intended to receive a second occupant, representing 20% ​​of the seat, and a second lateral support intended to receive a third occupant representing 40% of the seat, the first lateral support, the central support and the second lateral support being formed by separate molded plastic parts, said supports being supported by a substructure comprising: — a rear structural support shaft, fitted into rear housings of the supports, the housings opening towards the rear of the bench seat, said support shaft carrying in particular the ISOFIX standard anchoring loops and — a front structural support shaft, fitted into protruding housings under the supports. - said assembly comprising, in addition to the seat, a backrest, in three parts, along the longitudinal direction, independently foldable from one another, comprising: — a lateral backrest support, in extension of the lateral seat support, — a central backrest support, in extension of the central seat support, — a second lateral backrest support, in extension of the second lateral seat support. Fig. 2

[0030] [Fig.2] is a detailed top view of the three seat supports, namely the first lateral support, the central support and the second lateral support, in the form of three molded plastic pieces rigidly assembled together and wherein: - two juxtaposed lateral edges of the first lateral support and the central support are joined by two mechanical connecting members, in particular clip-on, - two other juxtaposed lateral edges of the central support and the second lateral support are joined by two mechanical connecting members, in particular clip-on, and wherein the first lateral support and the second lateral support are two separate pieces, according to an embodiment of the present disclosure, in particular symmetrical to each other by a plane of symmetry. Fig. 2A

[0031] [Fig.2A] is a detailed view of the three supports (lateral, central and second lateral), following an exploded view Fig. 3

[0032] [Fig.3] is a bottom view of [Fig.2], the supports having interfaces mechanical structures forming housings on a front portion of the supports, opening vertically downwards, intended to receive said front support shaft of the substructure, Fig. 4

[0033] [Fig.4] is viewed from the rear of [Fig.2], illustrating mechanical interfaces, rear supports with the housing opening towards the rear configured for the insertion of the rear support shaft of the substructure. Fig. 5

[0034] [Fig. 5] is a detailed view of [Fig. 2], illustrating the mechanical linking elements connecting the two lateral edges of the central support and the lateral support. Fig. 6

[0035] [Fig.6] is a perspective view of [Fig.1], when the seat supports are removed, revealing the foundation structure which includes: - said rear support shaft, carrying the anchor loops including ISOFIX, - said front support shaft, configured to support the lateral support, the central support and the second support, under front portions of the supports, said rear support shaft being carried by four parallel flanges extending vertically from a chassis to a floor, the backrest supports, mounted pivotally respectively on two of the flanges at the level of the upper ends of the flanges, above the rear support shaft, said front support shaft, arranged at a distance from the floor by four vertical supports. Fig. 6A

[0036] [Fig.6A] is a detail view of four vertical structural supports, in the shape of a truncated pyramid, obtained by deformation of a sheet of the chassis, and as a support solution in replacement of the front support shaft of the [Fig.6], the four supports extending vertically from the floor, to support the seat supports, in particular the first lateral support, the central support and the second lateral support. Fig. 6B

[0037] [Fig. 6B] is a detail view of a crossmember, formed by a profile bearing on the vehicle floor extending along the longitudinal direction, as a support solution replacing the front support shaft of [Fig. 6], the crossmember extending transversely to the vehicle to support the seat supports, in particular the first lateral support, the central support, and the second lateral support. Fig. 7

[0038] [Fig.7] is a detailed top view of the three supports, namely the first support lateral, central support and second lateral support, in the form of three pieces molded plastics intended to be rigidly joined together and in which: - two juxtaposed lateral edges of the first lateral support and the central support are intended to be joined by two mechanical connecting elements, preferably plastic and in particular clip-on, by fitting the elements into female portions of the supports, - two other juxtaposed lateral edges of the central support and the second lateral support are intended to be joined by two mechanical connecting elements, preferably plastic, in particular clip-on, by fitting the elements into female portions of the supports, and wherein the first lateral support and the second lateral support are two identical pieces, according to a second embodiment of this disclosure. Fig. 7A

[0039] [Fig. 7A] shows a first bench comprising the three supports of [Fig. 7], joined in pairs by mechanical connecting elements, including the first lateral support, the central support, and the second lateral support, and according to a first single-piece seating configuration, preferably comprising a common padding covering the upper surfaces of the three seat supports, the three supports being rigidly connected in pairs by the mechanical connecting elements. Fig. 7B

[0040] [Fig.7B] shows a first bench comprising the three supports of [Fig.7], including the first lateral support, the central support and the second lateral support, and according to a second seating configuration in two independent parts, comprising a common padding, covering the upper surfaces of the first lateral support and the central support, which are joined together by mechanical connecting members, and an individual padding covering the second lateral support, the second lateral support not connected to the central support by said mechanical connecting member. Fig. 7C

[0041] [Fig. 7C] shows a second bench comprising the three supports of [Fig. 7], including the first lateral support, the central support, and the second lateral support, and according to a third seating configuration in three independent parts, an individual cushion covering each of the three supports (lateral, central, and second lateral), said three seat supports not connected by the mechanical linking elements Fig. 7D

[0042] [Fig.7D] is side view of the seat supports, when viewed along the longitudinal direction of the seat, covered with padding, and a cap covering the padding attached to the cap, typically to attachment elements of the supports, projecting under the seat supports. Fig. 7E

[0043] [Fig.7E] is a detail and bottom view of [Fig.7D] of the support which includes molded plastic hooking elements configured to hook a cap tie. Description of the implementation methods

[0044] Generally speaking, the present disclosure relates to a bench seat comprising a seat cushion, and preferably a backrest. Such a bench seat finds particular application in the second row of a motor vehicle to seat three occupants, seated side by side along a longitudinal direction of the seat cushion DL.

[0045] The seat includes a seat support system comprising a central support Sc, and a lateral support SI, arranged laterally to the next central support, along the longitudinal direction of the seat DL, and preferably a second lateral support S12. The three supports SI, Sc, and S12 are respectively configured to seat the three occupants.

[0046] According to this disclosure, the central support Sc, the lateral support SI and the second lateral support S12 are formed from parts distinct from each other.

[0047] The supports can be made of any material, in particular metal or plastic. The central support, the lateral support, or even the second lateral support can each be a single, one-piece part, and for example, molded plastic parts, typically by injection.

[0048] Manufacturing the SI, Sc, S12 seat supports by molding advantageously allows the shape of the support to be given.

[0049] Each seat support, in particular the lateral support SI, the central support, or even the second support S12, may have a shape having: - a central section designed to accommodate the buttocks and thighs of the occupant, and preferably - raised edges relative to the central part, configured to ensure lateral support of the occupant of the seat support, along the longitudinal direction DL.

[0050] Each support SI, Sc, S12 can extend from a rear edge, typically adjacent to the backrest, to a front edge forming a nose of the seat. A section along a vertical plane of the central part of each support can have a rising profile, from rear to front, thus forming an anti-submarining support profile.

[0051] A rear portion of the support can be hollowed out, for example by a series of openings distributed along two directions of the support, along the longitudinal direction DL and the transverse direction of the support, in order to give the hollowed-out wall of the support increased elasticity, particularly compared to a non-hollowed-out portion. This increased elasticity of the support SI, Sc, S12 on its rear portion allows the support, especially a plastic one, to deform under the oscillations of the occupant's load, thus acting as a suspension. The seat is therefore preferably without metal suspension.

[0052] The plastic molding of the supports can further enable the formation of different functions, and in particular: - mechanical interfaces of the support allowing the supports to be fixed to a structure, in particular with an LG housing; orient, typically of rear U section, opening towards the rear, configured to receive a rear structural AS support shaft, and where applicable a lower LG2 housing opening under the support, configured to receive a front structural ASv support shaft, and / or - OA attachment elements, for fixing a Cf cover intended to cover the seat padding system.

[0053] According to one embodiment, the lateral support SI and the second lateral support S12 can be identical, as can be seen in the example of [Fig. 7]. It is thus possible to form a bench seat with seating for three occupants, and with the same part reference to form the lateral support SI and the second lateral support S12, to the right and left of the central support Sc.

[0054] According to another embodiment, the lateral support SI and second lateral support S12 can be distinct, and in particular formed by parts substantially symmetrical with respect to a median vertical plane, and as can be seen in the example of [Fig.3].

[0055] The design of the seat support system is advantageously modular in order to accommodate several seating configurations, as illustrated in Figures 7A, 7B, 7C, and in particular different seat padding configurations.

[0056] The padding is typically made of a soft material providing seating comfort. The padding may, for example, be made of polyurethane foam. The padding may also be an entanglement of continuous thermoplastic fibers forming loops welded together, typically obtained by extrusion, and as taught, for example, in document FR3140296 of the present Applicant.

[0057] Also, the seat includes a padding system which may include one or more independent paddings.

[0058] Thus, and according to a first possibility, the lateral support SI, and the central support Sc, or even the second lateral support S12 can be covered by a common padding MC.

[0059] A common padding is understood to be a padding which extends in one piece over several supports, at least over the lateral support and the central support ([Fig.7B]), or even also over the central support (see example in [Fig.7A]), or at least over the central support Sc and the second lateral support S12; and as opposed to an individual padding MI which extends only over one of the supports (lateral, central or second lateral), in other words without covering the other supports.

[0060] The seat support system comprising the lateral support SI, the central support Sc and the second central support S12 can be self-supporting by the addition of mechanical linking elements OM.

[0061] Thus, when two or three supports SI, Sc, and S12 are covered by a common padding MC, said seat supports covered by the common padding are preferably mechanically linked in order to form a set of self-supporting supports.

[0062] Such a self-supporting assembly of seat supports can then allow the common padding to be fixed to the supports, typically by adding a common cover Cf over the common padding. A common cover is understood to be a cover over a common padding, as opposed to an individual cover that covers an individual padding. Alternatively, the assembly may not have a cover, the common padding being fixed to the various supports SI, Sc, or even S12 by an adhesive between the padding and the supports.

[0063] A modular cushion can thus be obtained comprising supports mechanically linked by mechanical connecting elements, the common padding, and the cover. Such a modular cushion can advantageously be self-supporting, facilitating its storage and transport. During manufacturing, the modular cushion (comprising the support(s), padding, and cover) can be assembled at a first manufacturing site, and for assembly of the modular cushion onto the seating structure, which is attached to a vehicle chassis, this assembly can advantageously be carried out at a second manufacturing site, located away from the first site.

[0064] Thus, the modular design of the support allows, according to a first possibility, the assembly of a bench seat in one piece, comprising the lateral support SI, the central support Sc and the second lateral support, all three of which are covered by a common padding MC extending longitudinally along the longitudinal direction of the seat.

[0065] The three supports can be rigidly joined, namely by means of a fixed connection, two by two, by the addition of mechanical connecting elements OM.

[0066] One or more mechanical connecting members OM can rigidly join two juxtaposed lateral edges belonging to the lateral support and the central support Sc. One or more other mechanical connecting members OM can rigidly join the other lateral edge of the central support, and a juxtaposed lateral edge of the second central support S12.

[0067] The mechanical connecting member OM is a part that straddles the two supports (lateral and central, or central and second lateral) to be connected and is preferably a clip-on part, for example in the shape of an inverted U. A first vertical wing of the U is configured to fit and lock elastically into a female portion of the first support (lateral, central, or second lateral) to be connected, while a second vertical wing of the U is configured to fit and lock elastically into a female portion of the second support to be connected.

[0068] Generally, the mechanical connecting element OM can typically be a one-piece plastic part, typically injection molded. The female portions of the seat supports (namely the lateral support, the central support, or even the second lateral support) can be obtained by molding during the injection molding of the seat supports.

[0069] A common cover can be placed over the common MC mattress and attached to the three seat supports (lateral, central, and second lateral) to obtain the modular cushion in one piece, as shown in [Fig. 7A]. Alternatively, the assembly can be assembled without a cover, the common cushion being attached to the various supports SI, Sc, S12 by an adhesive between the cushion and the supports.

[0070] According to a second possibility, illustrated in particular by way of example in [Fig.7B], the modular design of the supports makes it possible to obtain a bench seat in two independent parts, along the longitudinal direction DL, in particular 2 / 3 & 1 / 3 or 60% & 40%.

[0071] To this end, the lateral support SI and the central support Sc can be covered by a common padding MC according to a first embodiment, the lateral support SI and the central support SI preferably being mechanically connected beforehand by the mechanical connecting members OM. A common cap Cf can cover the common padding MC and be attached to the lateral support SI and central support Sc assembly. Alternatively, the assembly can be without a cap, the common padding being attached to the various supports SI, Sc by an adhesive between the padding and the supports.

[0072] This results in a first modular cushion of the first part, which can represent 2 / 3 (or 60%) of the seat along the longitudinal direction DL of the seat. The second lateral support S12 is covered by an individual padding MI, and the individual padding is attached to the second lateral support S12 by a cap. Individual. Alternatively, the individual MI safety mattress is attached to the second lateral support S12 with adhesive. This creates a second modular cushion, part of the first, which can represent 1 / 3 or 40% of the seat. Such a modular cushion can advantageously be self-supporting, facilitating storage and transport, and allowing for manufacturing at a first site located away from a second manufacturing site where the final assembly of the modular cushions onto the seat structure on the subframe, inside the vehicle, takes place, as previously explained.

[0073] According to a second variant of this second possibility, comprising a seat in two independent parts, the common padding MC can cover the central support Sc and the second lateral support S12, with the individual padding MI covering the (first) lateral support. In this variant, the individual padding is attached to the lateral support SI by an individual cap (or by an adhesive) and the common padding is attached to the central support Sc and second lateral support S12 assembly by a common cap Cf (or by an adhesive). The central support Sc and the second lateral support S12 are preferably mechanically and rigidly connected by one or more mechanical connecting elements OM.

[0074] Finally, and according to a third possibility, the seat of the bench is in three independent parts, as illustrated in [Fig.7C]. According to the third possibility, each seat support (namely the lateral support, the central support and the second lateral support) is covered by an individual padding MI, and fixed to said seat support by an individual cap (or by an adhesive).

[0075] The fastening elements OA under each seat support (lateral, central, or even second lateral) are configured to secure the cover or covers, depending on the configuration. The fastening elements may, for example, be plastic hooks extending outwards under each support, distributed around a periphery of the support. These hooks form a discontinuous fastening groove, open to the outside, and configured to accommodate a drawstring LS forming a loop, extending in several positions from the loop into different hooks.

[0076] When the headband is an individual headband covering an individual padding MI, the fastening link LS is hooked into the hooking members OA of the same seat support, namely the lateral support, the central support, or the second lateral support.

[0077] When the cover is a cover that goes over a common padding MC, the fastening link is attached to fastening elements OA belonging to the seat supports covered by the seat padding, namely: - the three supports (namely the lateral support SI, the central support Sc and the second lateral support S12) for a single-piece seat, - the two supports (namely the lateral support SI and the central support Sc or the central support Sc and the second lateral support S12).

[0078] Alternatively, and according to a variant not illustrated, the attachment member may include a periphery-running attachment groove, the groove opening beneath the support. The cap then includes, along its edge, attachment profiles configured to lock by elastic interlocking in the attachment grooves.

[0079] When the headgear is an individual headgear covering an individual MI safety mattress, the hook profiles are hooked in the hook groove of the same seat support, and on several sides of the support, in particular three sides (chosen from the lateral support, the central support, or the second lateral support).

[0080] When the cover is a cover that goes over a common MC padding, the attachment profiles are configured to lock into attachment grooves belonging to the different seat supports covered by the seat padding, namely: - the three supports (namely the lateral support SI, the central support Sc and the second lateral support S12) for a single-piece seat, - the two supports (namely the lateral support SI and the central support Sc or the central support Sc and the second lateral support S12).

[0081] Generally, when the seat comprises two independent parts, or three independent parts, the different parts, preferably in the form of modular cushions, are free to move relative to each other.

[0082] It may also be envisaged to provide a substructure, in several independent parts along the transverse direction of the vehicle, the different structures associated respectively for the support of the different parts of the seat, and for example provided in whole or in part with slides between the chassis of the vehicle and the substructure to allow adjustment of the forward or backward movement of the seat, and independently for each part of the seat, and for example the forward movement of a first part of the seat representing 1 / 3 of the seat relative to the other part representing the remaining 2 / 3 of the seat, along its longitudinal direction.

[0083] The bench seat may further include a substructure comprising feet Pi projecting from the vehicle chassis floor, in particular four in number, in the form of metal flanges. The feet are aligned along the longitudinal direction of the seat and carry said rear support shaft AS, which connects the flanges to each other, in an intermediate position of the flanges along the vertical direction. It is noted that said typically metal support shaft AS may carry the anchor loop pairs of a fastening system typically known as ISOFIX, and typically used for seat anchoring and locking baby in the vehicle. The anchor loops are arranged between the seat and the backrest of the bench seat.

[0084] The folder can be in one piece (embody not illustrated) or comprise several independent folder supports, and in particular three independent folder supports as illustrated by way of example in [Fig.6].

[0085] In particular, the three supports, respectively lateral, central and second lateral, extend, in line with the seat supports, namely that preferably: - the lateral backrest support Sdl extends in line with the lateral seat support SI so that the occupant's back rests on the lateral backrest support when the thighs rest on the lateral seat support SI, - the central backrest support Sdc extends in line with the central seat support Sc so that the occupant's back rests on the central backrest support when the thighs rest on the central seat support Sc, - the second lateral backrest support Sdl2 extends in line with the second lateral seat support so that the occupant's back rests on the second lateral backrest support when the thighs rest on the second lateral seat support Sdl2.

[0086] The independent backrest supports are each covered by individual padding and attached to the support by an individual cap. Each backrest support Sdl, Sdc, Sdl2 can be articulated to two flanges of the base structure and in particular: - the (first) lateral backrest support Sdl is articulated along an axis of rotation at the upper ends of a first and second flange, - the central backrest support Sdc is articulated along a rotation axis at the upper ends of the second flange and a third flange, - the second lateral backrest support Sdl2 is articulated along an axis of rotation at the upper ends of the third flange and a fourth flange.

[0087] The rotation axes of the three backrest supports can be confused.

[0088] According to such an embodiment, the three independent file supports can to be folded down, independently of each other, by pivoting around the axis of rotation.

[0089] Generally, and in a folded-down position of the backrest, the backrest can form a flat floor, for example as an extension of the surface of a trunk.

[0090] The substructure may further include a front support shaft AS, which extends parallel to said rear support shaft AS.

[0091] During the assembly of the bench seat, the modular cushions (seat) can be assembled to the base structure by implementing a kinematic mechanism including: - insertion of the rear AS support shaft into the rear LG housing(s) of the support(s) (lateral and / or central and / or second lateral) - a pivoting of the modular cushion around the rear support shaft, and until the insertion of the front ASv support shaft is obtained in a second LG2 housing.

[0092] The support of the lateral support SI, central Sc and the second lateral support S12, on a front portion of the supports, can be obtained, as previously described, in particular by the front support shaft ASv, as previously described.

[0093] It is noted that the rear LG housing opens towards the rear of each support, namely substantially in a direction from front to rear of each SI, Sc or S12 support, and that the front LG2 housing opens in a vertical component downwards.

[0094] The insertion direction of the rear AS support shaft in the rear LG housing and the insertion direction of the front ASv support shaft are not parallel, typically inclined to each other at an angle between 45° and 135° such that 90°. When the front ASv support shaft is housed in the second LG2 housing and the rear AS support shaft is housed in the rear LG housing, it is only possible to remove the rear support shaft from the LG housing after extracting the front ASv support shaft from the second LG2 housing by pivoting the support around the rear AS support shaft.

[0095] A locking means may be provided to ensure that the front support shaft ASv is locked in the front housing LG2. This locking means may be an elastic fit of the shaft in the housing LG2 that is elastically deformable. This locking means may also be a latch, or a part fixed to the support that prevents the front support shaft ASv from being removed from the housing LG2.

[0096] Generally, alternatively, the support of the portions of the supports SI, Sc, S12 can be obtained by projections Sa of the floor as illustrated in [Fig.6A], in particular in truncated pyramids in place of the front support shaft ASv ([Fig.6A]), or by a cross member Tr ([Fig.6B]); The cross member Tr can be formed by a profile bearing on the floor of the vehicle extending along the longitudinal direction, as a support solution in place of the front support shaft, the cross member extending transversely to the vehicle to support the seat supports, in particular the first lateral support, the central support and the second lateral support.

[0097] In such a case, the modular cushion pivots around the rear support shaft until it is supported by the projections Sa or by the cross member. A locking system may be provided between the projections Sa and the support, or between the cross member Tr and the support.

[0098] Thus and generally, the present disclosure allows for the creation of two bench seats, first bench seat B1 and second bench seat B2, typically belonging to two motor vehicles, which share the same supports mostly (namely at least the lateral support SI and the central support Sc) or totally (namely for the second lateral support).

[0099] Different possible combinations of first bench seat B1 and second bench seat B2 are shown in Table 1 below.

[0100] [Tables] Sets First bench in one piece First bench 1 / 3 & 2 / 3 or 40% & 60% Second bench 1 / 3 & 1 / 3 & 1 / 3 or 40% & 20% & 40% Combination 1 Combination 2 Second bench 1 / 3 & 2 / 3 or 40% & 60% Combination 3 Combination 4

[0101] Also, and generally speaking, the present disclosure still relates to an assembly comprising a first bench seat B1 and a second bench seat B2 for a vehicle.

[0102] The first bench B1 has a seat comprising: - a seat support system comprising a central support Sc, and a lateral support SI, arranged laterally to the next central support, along a longitudinal direction of the seat DL, the central support Sc and the lateral support SI being formed from parts distinct from each other and - a padding system comprising a common padding MC, jointly covering an upper surface of the central support Sc and an upper surface of said lateral support SI, said common padding MC placed on the central support and on the lateral support.

[0103] The second bench B2 has a seat comprising- - a seat support system, comprising a central support, and a lateral support arranged laterally to the central support along a longitudinal direction DL of the seat, the central support Sc and the lateral support Sc being formed from parts distinct from each other and - a padding system comprising at least two paddings, including an individual padding MI covering an upper surface of said at least one lateral support SI, and placed on the lateral support, and another separate padding covering an upper surface of the central support, placed on the central support.

[0104] According to this disclosure: - The SI side support belonging to the first bench seat B1 and the SI side support belonging to the second bench seat B2 are identical, - the central support Sc belonging to the first bench B1 and the central support Sc belonging to the second bench B2 are identical.

[0105] According to one embodiment, the lateral support SI of the first bench B1 can be a first lateral support, and in which the support system includes a second lateral support S12, arranged with respect to the central support Sc, along the longitudinal direction DL of the seat, on the side opposite to the first lateral support.

[0106] The lateral support SI of the second bench seat B2 can be a first lateral support, and in which the support system includes a second lateral support S12, arranged with respect to the central support Sc, along the longitudinal direction DL of the seat, on the side opposite to the first lateral support, and in which in particular, the lateral support SI.

[0107] In general, the first lateral support SI and the second lateral support S12 may be identical, or may be distinct, in particular symmetrical by a vertical plane, typically median to the central support.

[0108] Advantageously, and according to an advantageous embodiment, the second lateral support S12 of the first bench seat B1 and the second lateral support S12 of the second bench seat B2 are identical.

[0109] In general, the present disclosure makes it possible to limit the number of seat support part references for the support system of the two bench seats B1 B2, which may include only two references to respectively form the lateral support SI and the central support Sc of the two bench seats Bl, B2 of different configurations, or only two references to also form the second lateral support S12 (when the second lateral support is identical to the first lateral support), or even include additional references (one additional reference or even two additional references) when the second lateral support S12 is distinct from the first lateral support, and / or when the second lateral support S12 of the first bench seat Bl is distinct from the second lateral support S12 of the second bench seat B2.

[0110] According to an embodiment illustrated in particular in [Fig.7A], the first bench Bl may include a bench seat in one piece, the common padding MC of the first bench B1 covers the entire support surface of the seat support system comprising, along the longitudinal direction DL of the seat, respectively, the upper surface of the first lateral support SI, the upper surface of the central support Sc and an upper surface of the second lateral support S12.

[0111] According to another embodiment, in particular illustrated in [Fig.7B], the first bench B1 may comprise a seat in two independent parts, along the longitudinal direction DL of the seat, in particular two-thirds / one-third or 60% & 40%, the common padding MC of the first bench B1 covering the upper surface of the first lateral support SI and the upper surface of the central support Sc, an individual padding MI covering an upper surface of the second lateral support S12.

[0112] According to one embodiment, in particular illustrated in [Fig.7C], the second bench B2 can comprise a seat in three independent parts, along the longitudinal direction DL of the seat, in particular one third / one third / one third or 40%&20%&40%, the upholstery system comprising the individual padding MI placed on the first lateral support, a (second) individual padding MI placed on the central support SI, but also a (third) individual padding MI placed on the second lateral support S12.

[0113] According to one embodiment (not illustrated) the second bench B2 can be a two-part independent seating bench, along the longitudinal direction of the seat DL, in particular one third / two thirds or 40%&60%, the upholstery system comprising the (first) individual padding placed on the first lateral support SI, the separate padding being a common padding MC jointly covering the upper surface of the central support SI and the upper surface of the second lateral support S12.

[0114] The lateral support SI and the central support Sc extend lengthwise, along a first direction Dl, from front to back of the seat, along a direction transverse to the longitudinal direction of the seat, and from one lateral edge to another lateral edge, along the longitudinal direction DL of the seat.

[0115] Generally, the lateral support SI and the central support Sc, covered by the common padding MC, are joined together by one or more mechanical connecting members OM, as previously described for embodiments in Figures 7A and 7B. Alternatively or additionally, the central support Sc and the second lateral support S12 may be joined together by one or more mechanical connecting members OM, particularly when covered by a common padding MC, as previously described for embodiment 7A.

[0116] The mechanical linking element(s) OM can be configured as clip-on elements and be elastically fitted into the two seat supports to be linked, and in particular as previously described.

[0117] Generally, the lateral support SI, the central support Sc, and where applicable the second lateral support S12 can respectively be plastic parts typically molded, especially by injection. Similarly, OM mechanical linking elements can be plastic parts, especially molded, typically by injection, and particularly in inverted U-shaped.

[0118] In general, said assembly may exhibit: / a / a headgear system for the first bench seat B1 comprising: - a common headgear Cf, covering the common mattress MC of the first bench seat Bl, fixed jointly to the lateral support SI and the central support Sc according to the embodiment of [Fig.7A] and 7B, and possibly to the second lateral support S12 according to the embodiment of [Fig.7A], or alternatively, - a common cover Cf covering the common padding MC of the first bench, fixed jointly to the lateral support SI and to the central support Sc and an individual cover Cf covering the individual padding resting on the second lateral support in particular when said assembly is according to the embodiment of [Fig.7B],

[0119] Alternatively or additionally, said assembly may include: / b / a headrest system for the second bench seat B2: - an individual cover Cf, covering the individual padding MI and fixed to the lateral support SI and an individual cover Cf, covering the individual padding resting on the central support Sc, and fixed to the central support Sc, and possibly an individual cover Cf covering the individual padding MI resting on the second lateral support S12, in particular when said assembly is according to the embodiment of [Fig.7]C, or again, - an individual cover Cf, covering the individual padding MI and fixed to the lateral support SI and a common cover Cf, covering the common padding MC resting on the central support Sc and resting on the second lateral support S12.

[0120] Generally, the lateral support SI, the central support Sc, and where applicable the second lateral support S12 are provided with a hooking system configured to hook a cap, such as hooking members OA projecting below the lateral, central and where applicable second lateral support S12, around the periphery of the supports, or a hooking groove around the periphery of said lateral, central and second lateral support.

[0121] According to one embodiment, the first bench seat Bl and / or the second bench seat B2 comprises said support shaft AS, extending along the longitudinal direction DL, and in which said lateral support SI, said central support Sc, and where applicable the second lateral support S12, each comprise an open housing LG on a rear portion of the support, extending along the longitudinal direction DL of the seat, receiving in a fit said support shaft AS preferably allowing the pivoting of said support around the support shaft AS.

[0122] The support of the lateral support SI, central Sc and of the second lateral support S12, on a front portion of the supports, can be obtained, as previously described, in particular by the front support shaft ASv, as previously described, or by the projections Sa of the floor, or by the cross member Tr. Industrial application

[0123] These technical solutions may be applicable in particular to meet different bench seat configurations during vehicle manufacturing.

[0124] This disclosure further relates to a method of assembling a first bench seat B1 and a second bench seat assembly B2 according to this disclosure, comprising - / A / Provide one set of identical SI side supports, and one set of identical Sc central supports and in which the assembly of the seat of the first bench B1 comprises: - / B 1 / Take one of the lateral supports SI of the game and one of the central supports Sc of the game and preferably secure them together, and if necessary take a second lateral support S12 and preferably secure it to the central support in particular when said assembly is according to the embodiment of [Fig.7A], - / B2 / Lay down a common padding MC covering the lateral support SI and the central support Sc, and where applicable the second lateral support S12 when said assembly is according to the embodiment of [Fig.7A], or where applicable cover the second lateral support S12 with an individual padding MI when said assembly is according to the embodiment of [Fig.7B], and in particular - / B3 / Cover the common padding with a common cap and fix the common cap to said lateral support and to the central support, and where appropriate fix the common cap to the second lateral support when said assembly is according to the embodiment of [Fig.7A], and where appropriate cover the individual padding with an individual cap Cf; and fix the cap to the second lateral support S12 when said assembly is according to the embodiment of [Fig.7B].

[0125] Alternatively, the first bench B1 may be without a cover and therefore the process is devoid of step / B3 / , the padding or padding being fixed to their supports by adhesive.

[0126] According to the method, the assembly of the seat of the second bench B2 comprises: - / Cl / Taking one of the lateral supports SI of the set and one of the central supports Sc of the set, and where applicable taking a second lateral support S12, when said assembly is according to the embodiment of [Fig. 7C], and preferably securing it to the central support Sc when said assembly is according to the second variant of the second possibility (namely with a two-part seat, a common padding covering the central support and the second lateral support) - / C2 / Place an individual padding MI covering the lateral support SI, place a padding covering the central support Sc, in particular an individual padding and place an individual padding on the second lateral support S12 when said assembly is according to the embodiment of [Fig.7C], or a common padding MC covering the central support Sc and the second lateral support S12 when said assembly is according to the second variant of the second possibility, and possibly, - / C3 / Cover the individual padding MI of the lateral support SI with an individual cap Cf and fix the individual cap to the lateral support SI, cover the padding of the central support Sc with a cap, and fix the cap to the central support Sc, in particular cover the individual padding MI of the second lateral support S12, and fix the individual cap Cf when said assembly according to the embodiment of [Fig.7C], or cover the common padding MC of the central support Sc and the second lateral support S12 with a common cap, and fix the common cap to said central support Sc and to the second lateral support S12, when said assembly according to the second variant of the second possibility.

[0127] Alternatively, the first bench B2 may be without a cover and therefore the process is devoid of step / C3 / , the padding(s) being fixed to their supports by adhesive. List of reference signs

[0128] - Bl. First bench seat, - B2. Second bench seat, - SI. Lateral support (seat), - Sc. Central support (seat), - S12. Second lateral support (seat), - MI. Individual mattress, - MC. Common Mattress, - Cf. Headdress, - OA. Attachment elements (lateral and central supports for attaching the headgear), - OM. Mechanical connecting element, - Its projection (of the floor frame), - Tr. Traverse (front support of supports) - AS. Support shaft (rear), - ASv. Support shaft (front) - Sdl. Lateral backrest support, - Sdc. Central backrest support, - Sdl2. Second lateral support.

Claims

Demands

1. Assembly comprising a first bench seat (B1) and a second bench seat (B2) for a vehicle, wherein: - the first bench seat (B1) having a seat comprising: — a seat support system comprising a central support (Sc), and a lateral support (SI) arranged laterally to the following central support, a longitudinal direction of the seat (DL), the central support (Sc) and the lateral support (SI) formed by separate parts, and — an upholstery system comprising a common padding (MC), jointly covering an upper surface of the central support (Sc) and an upper surface of said lateral support (SI), said common padding (MC) resting on the central support and the lateral support, and wherein: - the second bench seat (B2) having a seat comprising: — a seat support system, comprising a central support,and a lateral support arranged laterally to the central support along a longitudinal direction (DL) of the seat, the central support (Sc) and the lateral support (Sc) being formed from separate parts, and — an upholstery system comprising at least two paddings, including an individual padding (MI) covering an upper surface of said at least one lateral support (SI), placed on the lateral support, and another separate padding covering an upper surface of the central support, and placed on the central support, and in which: - the lateral support (SI) belonging to the first bench seat (B1) and the lateral support (SI) belonging to the second bench seat (B2) are identical, - the central support (Sc) belonging to the first bench seat (B1) and the central support (Sc) belonging to the second bench seat (B2) are identical.

2. Assembly according to claim 1, wherein the lateral support (SI) of the first bench seat (Bl) is a first lateral support, and wherein the support system comprises a second lateral support (S12), arranged relative to the central support (Sc), along the direction longitudinal (DL) of the seat, on the side opposite the first lateral support and / or in which the lateral support (SI) of the second bench (B2) is a first lateral support, and in which the support system includes a second lateral support (S12), arranged with respect to the central support (Sc), along the longitudinal direction (DL) of the seat, on the side opposite the first lateral support, and in which in particular the lateral support (SI) and the second lateral support (S12) are identical, or even distinct, in particular said lateral support (SI) and said second lateral support (S12) being symmetrical by a vertical plane, typically median of the central support (Sc) and in which in particular the second lateral support (S12) of the first bench (Bl) and the second lateral support (S12) of the second bench are identical.

3. Assembly according to claim 2, in the common safety mattress (MC) of the first bench (Bl) covers the entire support surface of the seating support system comprising, along the longitudinal direction (DL) of the seat, respectively, the upper surface of the first lateral support (SI), the upper surface of the central support (Sc) and an upper surface of the second lateral support (S12).

4. Assembly according to claim 2, wherein the first bench (Bl) comprises a seat bench in two independent parts, along the longitudinal direction (DL) of the seat, in particular two thirds / one third or 40%&60%, the common padding (MC) of the first bench covering the upper surface of the first lateral support (SI) and the upper surface of the central support (Sc), an individual padding (MI) covering an upper surface of the second lateral support (S12).

5. Assembly according to claim 2, 3 or 4, wherein the second bench seat (B2) comprises a three-part independent seat, in the longitudinal direction (DL) of the seat, in particular one-third / one-third / one-third or 40%&20%&40%, the upholstery system comprising the individual padding (MI) placed on the first lateral support (SI), a second individual padding placed on the central support (Sc), and furthermore a third individual padding placed on the second lateral support (S12).

6. Assembly according to claim 2, 3, or 4 wherein the second bench (B2) is a two-part independent seating bench, along the longitudinal direction of the seat (DL), in particular one-third / two-thirds, or 40%&60%, the upholstery system comprising the individual padding (MI) placed on the first lateral support (SI), the separate padding being a common padding jointly covering the upper surface of the central support (Sc) and the upper surface of the second lateral support (S12).

7. Assembly according to any one of claims 1 to 6, having: / a / a headrest system for the first bench seat (Bl) comprising: - a common cover (Cf) covering the common padding (MC) of the first bench seat (Bl), jointly fixed to the lateral support (SI) and the central support (Sc), and optionally to the second lateral support (S12), in particular when said assembly is according to claim 3, or alternatively, - a common cover (Cf) covering the common padding (MC) of the first bench seat, jointly fixed to the lateral support (SI) and the central support (Sc), and an individual cover (Cf) covering the individual padding resting on the second lateral support, in particular when said assembly is according to claim 4, and / or presenting / b / a headrest system for the second bench seat (B2): - an individual cap (Cf) covering the individual padding (MI) and fixed to the lateral support (SI), and an individual cap (Cf) covering the individual padding resting on the central support (Sc) and fixed to the central support (Sc), and optionally an individual cap (Cf) covering the individual padding (MI) resting on the second lateral support (S12), in particular when said assembly is according to claim 5, or alternatively, - an individual cover (Cf), covering the individual padding (MI) and fixed to the lateral support (SI) and a common cover (Cf), covering the common padding (MC) resting on the support central (Sc) and supporting the second lateral support (S12), in particular when said assembly is according to claim 6, and in particular the lateral support (SI), the central support (Sc), and where applicable the second lateral support (S12) are provided with a hooking system configured to hook a cap, such as hooking members (OA) projecting below the lateral, central and where applicable second lateral supports, on the periphery of the supports, or a hooking groove.

8. Assembly according to any one of claims 1 to 7, wherein the lateral support (SI), the central support (Sc), and where applicable the second lateral support (S12), when dependent on claim 2, are respectively plastic parts.

9. Assembly according to any one of claims 1 to 8, wherein the lateral support (SI) and the central support (Sc) extend lengthwise, along a first direction (Dl), from front to back of the seat, in a direction transverse to the longitudinal direction (DL) of the seat, and from one lateral edge to another lateral edge, in the longitudinal direction (DL) of the seat, and wherein the lateral support (SI) and the central support (Sc) covered by the common padding are joined together by one or more mechanical connecting members (OM), and / or the central support (Sc) and the second lateral support (S12) are joined together by one or more mechanical connecting members (OM), in particular when covered by a common padding (MC).

10. An assembly according to any one of claims 1 to 9, wherein the lateral support (SI) and the central support (Sc) extend lengthwise, along a first direction (Dl), from the front to the rear of the seat, in a direction transverse to the longitudinal direction (DL) of the seat, and from one lateral edge to another lateral edge, in the longitudinal direction of the seat, and wherein the first bench seat (Bl) and / or the second bench seat (B2) comprises a support shaft (AS), extending along the longitudinal direction (DL), and wherein said lateral support (SI), said central support (Sc), and optionally the second lateral support (S12), when said assembly is according to claim 2, each comprise an open housing (LG) on a rear portion of the support, extending along the longitudinal direction of the seat, receiving said support shaft (AS) preferably allowing the pivoting of said support around the support shaft (AS).

11. A method for assembling a first bench seat (B1) and a second bench seat (B2) of an assembly according to any one of claims 1 to 10, comprising / A / Providing a set of identical side supports (SI) and a set of identical central supports (Sc), wherein the assembly of the seat of the first bench seat (B1) comprises: - / B1 / Taking one of the side supports (SI) from the set and one of the central supports (Sc) from the set, and optionally taking a second side support (S12) when said assembly is according to claim 2, - / B2 / Laying down a common padding (MC) covering the side support (SI) and the central support (Sc), and optionally the second side support (S12) when said assembly is according to claim 3, or optionally covering the second side support (S12) with individual padding (MI) when said assembly is according to claim 4,and wherein the assembly of the seat of the second bench (B2) comprises: - / Cl / Taking one of the lateral supports (SI) of the set and one of the central supports (Sc) of the set, and where applicable taking a second lateral support (S12), when said assembly is according to claim 2, - / C2 / Placing an individual padding (MI) covering the lateral support (SI), placing a padding covering the central support (Sc), in particular an individual padding and placing an individual padding on the second lateral support (S12) according to the assembly of claim 5, or alternatively a common padding (MC) covering the central support (Sc) and the second lateral support (S12) when said assembly is according to claim A,

12. O, A method according to claim 11, wherein the assembly of the first bench seat (B1) comprises, successively at / B2 / : - / B3 / Covering the common padding with a common cover and attaching the common cover to said lateral support and to the central support, and optionally attaching the common cover to the second lateral support when said assembly is according to claim 3, or optionally covering the individual padding with an individual cover (Cf). (MI) and fix the individual headrest to the second lateral support (S12) when said assembly is according to claim 5, and wherein the assembly of the second bench seat (B2) comprises successively at / C2 / : - / C3 / Cover the individual padding (MI) of the lateral support (SI) with an individual cap (Cf) and fix the individual cap to the lateral support (SI), cover the padding of the central support (Sc) with a cap, and fix the cap to the central support (Sc), in particular cover the individual padding (MI) of the second lateral support (S12), and fix the individual cap (Cf) when said assembly is according to claim 5, or cover the common padding (MC) of the central support (Sc) and the second lateral support (S12) with a common cap and fix the common cap to said central support (Sc) and to the second lateral support (S12), when said assembly is according to claim 6.