Adjustable anchor latch for automotive rear seat back

Abstract

The invention proposes a motor vehicle structure (12) comprising: a support (28) with a receiving surface (30); an anchoring striker (42) comprising a mounting plate (44) with a contact surface, an anchoring bracket (46) anchored to a rear seat back; and a position adjustment interface (48). At the adjustment interface (48), the structure includes first positioning holes (34), and positioning pins (50) in the first positioning holes (34) for positioning the mounting plate relative to the support (28) in a first position. The structure (12) further includes second positioning holes (36) located at a distance from the positioning pins (50); the second positioning holes (36) being adapted to receive the positioning pins (50) in order to position the mounting plate (44) in a second position. Figure to be published with the abbreviation: Figure 3

Description

Title of the invention: Adjustable anchor latch for rear seat back of motor vehicle

[0001] The invention relates to the modular nature of a motor vehicle structure. The invention concerns the anchoring of retractable seatbacks to the rear seats of a motor vehicle. The invention relates to a structure with an anchoring latch for a rear seatback of a motor vehicle. The invention also relates to a motor vehicle.

[0002] A motor vehicle has several seating positions. Typically, a motor vehicle passenger compartment has two rows of seats, a front row and a rear row. In the rear row, the seats are formed by a continuous bench seat; the backrest of which is also continuous transversely.

[0003] A cargo compartment is commonly provided at the rear of the passenger compartment. The rear seatbacks delineate the passenger compartment from the cargo compartment, also known as the rear trunk. To increase the vehicle's cargo capacity, these rear seatbacks are pivotally mounted on the frame. They can thus move between a horizontally folded position and an upright position, usually vertical.

[0004] For safety reasons, the seatbacks are locked when in the upright position. This is to prevent the seatbacks from folding down on the passengers in the event of a rear-end collision, or due to the weight of cargo in the trunk. To this end, the vehicle has an anchoring system with a latch attached to the structure, as well as a bolt attached to the seatback and cooperating with the latch. Therefore, when folded down, the rear face of the seatbacks remains flat.

[0005] Document FR3041294A1 discloses a two-position locking device for a vehicle backrest that folds down along a transverse pivot axis, comprising a lock linked to said backrest and a strike plate linked to the structure of said vehicle and comprising a hooking member intended to engage with a bolt of said lock to secure said backrest to said structure, said strike plate being able, while remaining engaged with said lock, to slide in a support fixed on said structure along an arc-shaped travel centered on said pivot axis, said device further comprising locking means including a locking member movably mounted on said support between a locking position in which it engages with said strike plate and an unlocking position in which it is away from said strike plate.

[0006] In order to improve the comfort of rear passengers, it is useful to be able to adjust the angle of the seatbacks when they are upright.

[0007] Document FR3089897A1 describes a rear wheel arch reinforcement adaptable to a fixed or adjustable anchor point for a rear seat backrest. The motor vehicle comprises: a rear wheel arch; a rear fender liner; a rear wheel arch reinforcement attached to said arch and to the rear fender liner, and serving as a support for a rear seat backrest; and an anchor point for a rear seat backrest, mounted on the rear wheel arch reinforcement. The rear wheel arch reinforcement comprises a side panel adapted to receive the anchor point when said point is of the adjustable type, and a front panel with at least one recess adjacent to the side panel, adapted to receive the anchor point when said point is of the fixed type. The reinforcement is attached to the extension of the reinforcement by its lower portion and by the side panel's mounting tab, by means of fasteners positioned in holes.These fasteners are of the screw-nut type.

[0008] Document DE102017222687B4 describes an adjustable latch assembly for a vehicle seat, comprising: a base adapted for attachment to a vehicle body; a guide fixed for translation to the base and having a pair of notches formed internally; a striker fixed to the guide; and a locking mechanism for locking the striker in a position relative to the base. The base comprises two spaced plates receiving the guide between them. The base plates include guide grooves, and the guide has bushings engaged in the guide grooves.

[0009] A range of motor vehicles comprises different models with distinct geometries. In particular, these different models feature different geometries for their rear seat anchoring systems. However, the multiplication of anchoring system geometries multiplies the number of parts to be designed, produced, and stored. Producing different anchoring system models runs counter to the economies of scale sought in the automotive sector. Thus, there is a need to be able to produce different anchoring systems while reducing the number of parts. There is also a need to improve the anchoring robustness of a retractable rear seat.

[0010] The invention aims to address at least one of the problems or drawbacks encountered in the prior art. In particular, the invention aims to provide an adaptable anchoring system for the rear seat back of a motor vehicle. The invention also aims to optimize the modularity, cost, and strength of an adjustable anchoring system for the rear seat back of a motor vehicle.

[0011] According to a first aspect, the invention proposes a motor vehicle structure, the structure comprising: a support with a receiving surface; an anchoring strike plate comprising a mounting plate with a contact surface against the receiving surface, an anchor bracket projecting from the mounting plate and intended to be anchored to a rear backrest of a motor vehicle; the receiving surface and the contact surface forming a position adjustment interface; at the adjustment interface, the structure includes first positioning holes, positioning pins in the first positioning holes, in order to position the mounting plate relative to the support in a first position; notable in that at the adjustment interface, the structure further includes second positioning holes at a distance from the positioning pins; the second positioning holes being suitable for receiving the positioning pins in order to position the mounting plate in a second position.

[0012] Therefore, based on the same anchoring plate and the same support with several sets of positioning holes, it is possible to offer different backrest anchoring configurations. These parts can be used in different vehicle models, which allows for economies of scale and simplifies product ranges.

[0013] Preferably, the positioning pins include at least one oblong positioning pin.

[0014] Preferably, the positioning pins include recesses; preferably, the second positioning holes are identical to the first positioning holes.

[0015] Preferably, the positioning pins include an upper positioning pin and a lower positioning pin.

[0016] Preferably, the anchoring bracket includes a rod fixed to the fixing plate, the rod is vertically at the level of the upper positioning pin and / or longitudinally at the level of the lower positioning pin.

[0017] Preferably, the first positioning ports and the second positioning ports each comprise a top port and a bottom port larger than the top port.

[0018] Preferably, the support comprises an upper portion with the upper orifices, a lower portion with the lower orifices; the lower portion being transversely inwards relative to the upper portion.

[0019] Preferably, the support comprises a first thickness, the mounting plate comprises a second thickness greater than the first thickness; preferably, the first positioning holes and the second positioning holes are formed on the support, and the positioning pins are fixed to the mounting plate.

[0020] Preferably, the second positioning ports are offset longitudinally with respect to the first positioning ports.

[0021] Preferably, the second positioning holes and the first positioning holes are offset by a distance of between 15 mm and 50 mm.

[0022] Preferably, the first positioning holes and the second positioning holes define a polygon; the structure further includes a first weld point in said polygon.

[0023] Preferably, the structure includes a second weld point, a third weld point which are outside the polygon.

[0024] Preferably, the structure includes an external wall formed by the support.

[0025] Preferably, the support is an external support.

[0026] Preferably, the adjustment interface is vertical.

[0027] Preferably, the adjustment interface is a transverse interface.

[0028] Preferably, the adjustment interface includes fastening means.

[0029] Preferably, the polygon is a quadrilateral.

[0030] Preferably, the polygon is vertically between the second weld point and the third weld point.

[0031] Preferably, the fixing plate includes a contour line, the second positioning holes include a front hole cut by the contour line, a rear hole cut by the contour line.

[0032] Preferably, the first positioning holes include internal contours fitted to the positioning pins.

[0033] Preferably, the second positioning holes are free of positioning pins.

[0034] Preferably, the second positioning holes and the first positioning holes are offset by a distance of between 20 mm and 40 mm.

[0035] Preferably, the positioning pins are offset vertically and / or longitudinally.

[0036] Preferably, the positioning pins are tubular.

[0037] Preferably, the second position is at a distance from the first position.

[0038] According to another aspect, the invention proposes a motor vehicle structure, the structure comprising: a support with a receiving surface; an anchoring strike plate comprising a fixing plate with a contact surface against the receiving surface, an anchoring bracket projecting from the fixing plate and intended to be anchored to a rear seat back of a motor vehicle; the receiving surface and the contact surface defining a position adjustment interface; at the adjustment interface, the structure comprises first positioning holes, positioning pins; notable in that at the adjustment interface, the The structure further includes second positioning holes; the positioning pins are selectively inserted into the first or second positioning holes to adjust the position of the mounting plate relative to the receiving surface. Thus, the invention allows the structure to be assembled in several configurations using the same components.

[0039] According to another aspect, the invention provides a motor vehicle structure, the structure comprising: a support with a receiving surface having first positioning holes; an anchoring strike plate comprising a fixing plate with a contact surface against the receiving surface; an anchoring bracket projecting from the fixing plate and intended to be anchored to a rear seat back of a motor vehicle; positioning pins in the first positioning holes for positioning the fixing plate relative to the support in a first position; notable in that the receiving surface further has second positioning holes; the second positioning holes being adapted to receive the positioning pins for positioning the fixing plate in a second position. Thus, the invention makes it possible to assemble the structure in several configurations from the same components.

[0040] According to another aspect, the invention proposes a motor vehicle comprising a structure; the motor vehicle includes a rear seat with a rear backrest pivotally connected to the structure, the rear backrest including a locking system to an anchor latch; remarkable in that the structure conforms to the invention.

[0041] Preferably, the first positioning ports are front ports and the second positioning ports are rear ports.

[0042] Each feature introduced by the expression "preferably" given in relation to one of the aspects of the invention applies to all other aspects of the invention.

[0043] The invention will be well understood and other aspects and advantages will become clear upon reading the following description, given with reference to the attached figures listed below.

[0044] Fig. 1 is a side view of a motor vehicle according to the invention.

[0045] Figure 2 shows, from the inside, a portion of the structure of a motor vehicle. according to the invention.

[0046] Fig. 3 represents a motor vehicle structure according to a first embodiment of the invention.

[0047] Figure 4 represents a motor vehicle structure according to a second embodiment of the invention.

[0048] Fig. 5 is a cross-section of a portion of the structure of a motor vehicle according to the invention.

[0049] In the following description, the term "include" is synonymous with "include" and is not limiting in that it permits the presence of other elements in the motor vehicle to which it relates. It is understood that the term "include" includes the terms "consist of". The terms "external" and "internal" shall respectively designate what is oriented towards the outside of the vehicle and towards the inside of the vehicle.

[0050] In this description, the terms "longitudinal," "longitudinally," "transverse," and "transversely" are used with respect to the vehicle's frame of reference in the mounting configuration. "Longitudinal" refers to the vehicle's principal direction of travel. "Transverse" refers to a direction perpendicular to the vehicle's principal direction of travel. "Front" refers to the vehicle's principal direction of travel. "Rear" refers to the opposite of the front of the vehicle.

[0051] The X-axis represents the longitudinal direction, the Y-axis represents the transverse direction, and the Z-axis represents the vertical direction of the motor vehicle. These three axes define a right-handed trihedron whose orientation is preserved throughout the figures.

[0052] In this description, the ranges of values ​​include the bounds that delimit them.

[0053] In this description, the terms "vertical" and "horizontal" are not to be understood in the strict sense. Indeed, they allow an inclination of at most 20°, preferably at most 10°, more preferably at most 5°, and even more preferably at most 2°; with respect to the strict meaning of these terms.

[0054] In this description, the technical characteristics are defined in the mounting configuration of the structure, unless otherwise explicitly stated.

[0055] Throughout the description, the different figures use the same reference signs to designate identical or similar entities.

[0056] Figure 1 represents a motor vehicle 10, according to an embodiment of the invention. The motor vehicle 10 comprises energy storage means and at least one motor (not shown) adapted to drive said motor vehicle 10.

[0057] The motor vehicle 10 comprises a structure 12. The structure 12 forms an outer body, or the main frame of the motor vehicle. The structure 12 delimits different compartments of the motor vehicle 10, including the passenger compartment 14, the cargo area 16, and the engine compartment (not (shown). The cargo compartment 16 forms a rear compartment. The passenger compartment 14 forms a central compartment.

[0058] The structure 12 connects various parts of the motor vehicle 10, including the openings. It provides lateral openings 18 in which the openings are arranged. The structure 12 forms a mounting support for the powertrain, suspension systems, steering system, and braking systems.

[0059] The motor vehicle 10 comprises front seats and at least one rear seat 20, for example, two or three rear seats 20. The seats define seating positions. The rear seats 20 can be grouped into a bench seat extending through the passenger compartment 14. Each rear seat 20 has a horizontal seat cushion and a backrest; in this case, a rear backrest 22 extending from the seat cushion. The rear backrest 22 is pivotally connected to the structure 12. It is thus movable between a lowered position and an upright position, which are respectively horizontal and vertical. Each rear backrest 22 includes a locking system 24 with an anchoring latch carried by the structure. The locking system 24 includes a movable bolt adapted to anchor and release the rear backrest 22.

[0060] The motor vehicle can, for example, be a private motor vehicle or a commercial motor vehicle.

[0061] According to one embodiment, the motor vehicle comprises three transverse rows of seats.

[0062] Figure 2 shows a structural portion 12 of a motor vehicle according to an embodiment of the invention. The motor vehicle may correspond to the one shown in relation to Figure 1. The present portion is a right-hand side. The rear seat back is not shown for clarity.

[0063] The structure 12 can be formed from an assembly of stamped and welded sheet metal. The structural part 12 has an internal side wall 26; for example, forming a rear pillar.

[0064] The structure 12 includes a support 28 with a receiving surface 30. The structure 12 includes an internal wall formed by the support 28. The receiving surface 30 is generally perpendicular to the transverse direction. The receiving surface 30 is generally flat. It is intended to receive an anchor strike plate (not shown). It partially forms an adjustment interface.

[0065] The structure 12 includes first positioning holes 34. The first positioning holes 34 are arranged at the adjustment interface. The structure 12 also has second positioning holes 36. The second positioning holes 36 are located at a distance from the first adjustment holes; for example, longitudinally. The first positioning holes 34 and the second Positioning holes 36 pass through the sheet metal forming the support 28. They pass through the receiving surface 30.

[0066] The second positioning holes 36 are identical to the first positioning holes 34. The first positioning holes 34 form a first set of holes. The second positioning holes 36 form a second set of holes having the same number of holes as the first set. The holes in the sets of holes have the same arrangement and the same orientation.

[0067] The second positioning holes 36 result from a translation of the first positioning holes 34. The second positioning holes 36 are offset longitudinally relative to the first positioning holes 34. The second positioning holes 36 and the first positioning holes 34 are offset by a distance 38 of between 15 mm and 50 mm. The distance 38 is preferably between 20 mm and 40 mm.

[0068] The first positioning holes 34 and the second positioning holes 36 define a polygon 40. These positioning holes mark the angles of the polygon 40. The holes are inside the polygon 40. According to one embodiment, the polygon 40 is a quadrilateral, for example a parallelogram.

[0069] The first positioning ports 34 and the second positioning ports 36 each comprise an upper port 70 and a lower port 72. The lower ports 72 are larger than the upper ports 70. The lower ports 72 are more elongated than the upper ports 70. Each lower port 72 comprises a larger area than each upper port 70.

[0070] In the present embodiment, each set of holes comprises two positioning holes. According to an alternative of the invention, the first set of positioning holes comprises three positioning holes. The polygon forms a hexagon.

[0071] According to an alternative of the invention, the receiving surface is horizontal.

[0072] According to an alternative embodiment of the invention, the receiving surface is perpendicular to the longitudinal direction.

[0073] According to one embodiment of the invention, the interface has third positioning holes at a distance from the first and second, said third positioning holes being able to receive the positioning pins in order to position the anchor strike in a third position.

[0074] Figure 3 shows an interior area of ​​the structure 12 of a motor vehicle, according to an embodiment of the invention. The motor vehicle may correspond to the one shown in relation to one of Figures 1 to 2. The support 28 is covered by an anchor strike plate 42. A lateral opening 18 is shown in front of the pillar on which the support 28 is fixed.

[0075] The structure 12 comprises: a support 28 with a receiving surface 30 for the anchoring strike plate 42. The latter comprises a fixing plate 44 with a contact surface against the receiving surface 30, and an anchoring bracket 46 in front of the fixing plate 44. The anchoring bracket 46 is the part intended to be anchored to the rear backrest. The anchoring bracket 46 forms a loop. It forms a loop or a hook.

[0076] The structure 12 has an adjustment interface 48 for the position of the anchor strike plate 42. The adjustment interface 48 is interposed between the support 28 and the anchor strike plate 42. It is located between the receiving surface 30 and the contact surface, also called the fixing surface. At the adjustment interface 48, the structure 12 includes first positioning holes 34, second positioning holes 36, and positioning pins 50 in the first positioning holes 34. The first positioning holes 34 and the second positioning holes 36, via their contours or centers, define a polygon 40.

[0077] The positioning pins 50 are at a distance from the second positioning holes 36. The latter remain empty. The second positioning holes 36 are free of positioning pins. The positioning pins 50 are offset vertically and longitudinally from each other.

[0078] The adjustment interface 48 includes fastening means. It has at least one weld, such as an electrical weld point, securing the mounting plate 44 to the support 28. This at least one weld comprises a first weld point 52 within the polygon 40; a second weld point 54; and a third weld point 56. The latter two are outside the polygon 40. The polygon 40 is vertically positioned between the second weld point 54 and the third weld point 56. This arrangement of the fastening means allows for the distribution of forces.

[0079] The positioning pins 50 include at least one oblong positioning pin 58. The oblong positioning pin 58 contributes to the orientation adjustment of the fixing plate 44. It improves the temporary holding before final fixing.

[0080] The positioning pins 50 include recesses. This feature reduces the mass. Each recess passes through the corresponding positioning pin 50. The positioning pins 50 comprise an upper positioning pin 60 and a lower positioning pin 62.

[0081] The anchor bracket 46 includes a rod 64 fixed to the mounting plate 44. The rod 64 is a bent rod. It forms a hook. The rod 64 is vertical at the level of the upper positioning pin 60. The rod 64 is welded to the mounting plate. 44. The rod is also longitudinally at the lower positioning pin 62. This arrangement optimizes the forces, in particular the mechanical torques, transmitted by the rod to the fixing plate 44. The latter forms a mounting base.

[0082] The mounting plate 44 includes a contour line 66. The contour line 66 delimits the mounting plate 44. The second positioning holes include a rear hole 68 cut by the contour line 66. Said rear hole 68 cut is a lower hole.

[0083] In the present embodiment, the first positioning holes are front holes and the second positioning holes are rear holes. Thus, the anchor strike plate 42 is in a first configuration relative to the support 28. It is in a first position, such as a first longitudinal position.

[0084] According to an alternative embodiment of the invention, the position adjustment interface is an angular position adjustment interface. The first positioning ports are pivoted relative to the second positioning ports. The first set of positioning ports and the second set of positioning ports may intersect.

[0085] Figure 4 shows an interior area of ​​the structure 12 of a motor vehicle, according to another embodiment of the invention. The motor vehicle may correspond to the one shown in relation to one of Figures 1 to 3.

[0086] The present embodiment uses the same entities as the first embodiment; it differs from it in that these entities are positioned differently. The anchor strike plate 42 is in a second configuration, such as a second position relative to the support 28. The fixing plate 44 is set back on the receiving surface 30 relative to the first position. The second position is at a distance from the first position. They are at a distance longitudinally, and / or vertically, and / or transversely.

[0087] According to the present embodiment, the positioning pins 50 are inserted into the second positioning holes 36 to ensure positioning of the anchor strike plate 42 on the support 28. The first positioning holes 34 remain empty. They are free of positioning pins.

[0088] The second positioning holes 36 include contours of shapes complementary to the positioning pins. They include contours identical to the first positioning holes 34. Thus, the retention of the positioning pins 50 is identical between the first positioning holes 34 and the second positioning holes 36.

[0089] Therefore, the positioning pins 50 are selectively in the first positioning holes 34 or in the second positioning holes 36; in order to adjust the position of the fixing plate relative to the receiving surface.

[0090] The lower orifices 72 include a front orifice 74 crossed by the contour line 66, a rear orifice 68 surrounded by the contour line 66. Each second positioning orifice is surrounded by the contour line 66. Thus, the size of the fixing plate 44 is adjusted to the offset between the orifices; and therefore to the adjustment range.

[0091] According to an alternative of the invention, the first positioning holes are adjacent to the second positioning holes.

[0092] According to an alternative or option of the invention, the second positioning holes are offset vertically with respect to the first positioning holes.

[0093] The features described in relation to the second embodiment also apply to the first embodiment; unless the contrary is explicitly defined.

[0094] Figure 5 shows a cross-section of an adjustment interface 48 of a structure 12 of a motor vehicle, according to an embodiment of the invention. The motor vehicle may correspond to the one shown in relation to one of Figures 1 to 4. The support 28 is partially shown. The cross-section passes through the first positioning holes 34 and the positioning pins 50 housed therein. The positioning pins 50 pass through the support 28.

[0095] The receiving surface 30 is an external surface. It receives the mounting plate 44 of the anchor strike 42. A contact surface 76 of the mounting plate 44 is against the receiving surface 30. They fit together locally and are spaced apart between the positioning pins 50. The adjustment interface 48 extends between the receiving surface 30 and the contact surface 76. It is formed by these surfaces. The adjustment interface 48 is discontinuous. It extends beyond the contact surface 76. The adjustment interface 48 is traversed by the positioning pins 50. It is open via the first positioning holes 34 and the second positioning holes (not shown). Fastening means, such as the weld points 32, also traverse the adjustment interface 48.

[0096] The positioning pins 50 comprise an upper positioning pin 60 and a lower positioning pin 62. The positioning pins 50 include recesses 78. They are metallic. The positioning pins 50 may be tubes, for example, a split elastic tube. Thanks to the recess, the mass is reduced. Furthermore, the recess adds elasticity, which facilitates assembly before the welding operation, for example.

[0097] The support 28 is a transversely external support. The contact surface 76 is a transversely internal surface. The adjustment interface 48 is vertical. The adjustment interface 48 is a transverse interface. It is transverse between the support 28 and the mounting plate 44.

[0098] The positioning pins 50 are vertically offset from each other. The positioning pins 50 extend transversely. They are parallel. The first positioning holes 34 include inner contours fitted to the positioning pins 50.

[0099] The first positioning holes 34, like the second positioning holes, comprise an upper hole 70 and a lower hole 72 that is larger than the upper hole 70. The support 28 comprises an upper portion 80 with the upper holes 70, and a lower portion 82 with the lower holes 72. The lower portion 82 is transversely oriented inwards relative to the upper portion 80. This feature improves the stability of the mounting plate 44.

[0100] The support 28 comprises a first thickness 84, and the mounting plate 44 comprises a second thickness 86 that is thicker than the first thickness 86. It is at least 10% thicker; preferably at least 50% thicker. This optimizes mass and rigidity. The first positioning holes 34 and the second positioning holes are formed on the support 28, and the positioning pins 50 are fixed to the mounting plate 44.

[0101] According to an alternative of the invention, the first positioning holes and the second positioning holes are formed on the mounting plate; the positioning pins being fixed to the support.

[0102] According to an alternative of the invention, the fastening means include adhesive.

[0103] According to an alternative or option of the invention, the positioning pins include the fixing means; such as screws.

[0104] The invention comprises the combination of all the embodiments illustrated by all the figures.

[0105] Figures 2 to 4 are isometric views. They each respect a specific scale, real angles and real proportions.

Claims

Demands

1. Motor vehicle (10) structure (12), the structure (12) comprising: a support (28) with a receiving surface (30); an anchoring strike plate (42) comprising a fixing plate (44) with a contact surface (76) against the receiving surface (30), an anchoring bracket (46) projecting on the fixing plate (44) and intended to be anchored to a rear backrest (22) of a motor vehicle (10); the receiving surface (30) and the contact surface (76) forming a position adjustment interface (48); at the adjustment interface (48), the structure (12) comprises first positioning holes (34), positioning pins (50) in the first positioning holes (34), in order to position the fixing plate (44) relative to the support (28) in a first position;characterized in that at the adjustment interface (48), the structure (12) further comprises second positioning holes (36) at a distance from the positioning pins (50); the second positioning holes (36) being suitable for receiving the positioning pins (50) in order to position the fixing plate (44) in a second position.

2. Structure (12) according to claim 1, characterized in that the positioning pins (50) comprise at least one oblong positioning pin (58).

3. Structure (12) according to any one of claims 1 to 2, characterized in that the positioning pins (50) comprise recesses (78); preferably, the second positioning holes (36) are identical to the first positioning holes (34).

4. Structure (12) according to any one of claims 1 to 3, characterized in that the positioning pins (50) comprise an upper positioning pin (60) and a lower positioning pin (62).

5. Structure (12) according to claim 4, characterized in that the anchoring bracket (46) comprises a rod (64) fixed to the fixing plate (44), the rod (64) is vertically at the level of the upper positioning pin (60) and / or longitudinally at the level of the lower positioning pin (62).

6. Structure (12) according to any one of claims 4 to 5, characterized in that the first positioning holes (34) and the second positioning holes (36) each include an upper hole (70) and a lower hole (72) larger than the upper hole (70); preferably, the support (28) includes an upper portion (80) with the upper holes (70), a lower portion (82) with the lower holes (72); the lower portion (82) being transversely inwards with respect to the upper portion (80).

7. Structure (12) according to any one of claims 1 to 6, characterized in that the support (28) comprises a first thickness (84), the fixing plate (44) comprises a second thickness (86) greater than the first thickness (84); preferably, the first positioning holes (34) and the second positioning holes (36) are formed on the support (28), and the positioning pins (50) are fixed to the fixing plate (44).

8. Structure (12) according to any one of claims 1 to 7, characterized in that the second positioning holes (36) are offset longitudinally with respect to the first positioning holes (34); preferably, the second positioning holes (36) and the first positioning holes (34) are offset by a distance (38) of between 15 mm and 50 mm.

9. Structure (12) according to any one of claims 1 to 8, characterized in that the first positioning holes (34) and the second positioning holes (36) define a polygon (40); the structure (12) further comprises a first weld point (52) in said polygon (40); and / or the structure (12) comprises a second weld point (54), a third weld point (56) which are outside the polygon (40).

10. Motor vehicle (10) comprising a structure (12); the motor vehicle (10) comprises a rear seat (20) with a rear backrest (22) pivotally connected to the structure (12), the rear backrest (22) comprising a locking system (24) to an anchor latch (42); characterized in that the structure (12) conforms to any one of claims 1 to 9; preferably, the first positioning holes (34) are front holes and the second positioning holes (36) are rear holes.

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