FR3068651A1 - ANCHORING DEVICE FOR THE REMOVABLE FIXING OF A CHILD SEAT ON A REAR SEAT OF A FOLDING MOTOR VEHICLE IN A PORTFOLIO. - Google Patents

Abstract

The present invention relates to an anchoring device for the removable attachment of a child seat on a rear seat of a folding motor vehicle, said anchoring device comprising two anchoring metal rings (50) mounted on at least one member support (60) for mooring to the floor of said vehicle; characterized in that said anchoring metal rings (50) are pivotally mounted to pivot about a same transverse axis on said support member (60), said device also having anti-rotation means (80) to be attached to said backrest frame (12, 22) of said rear seat and shaped so that, in the service configuration of said anchor, resting on said rings (50) to hold them firmly against a rear tubular cross member (11A , 2 1A) of the seat frame (11, 21) of said rear seat.

Description

ANCHORING DEVICE FOR THE REMOVABLE FIXATION OF A SEAT

CHILD IN A REAR SEAT OF A MOTOR VEHICLE

FOLDABLE IN PORTFOLIO.

Field of the invention

The present invention relates to the field of removable attachment systems for a child seat on the rear seat of a motor vehicle, and in particular to those conforming to the ISOFIX standard.

Invention background

Child seats intended to be mounted on a seat in a motor vehicle, designated by the term attached child seat, make it possible to ensure the safety of children transported in road vehicles and in particular motor vehicles.

These child seats are generally made up of a rigid shell fixed to a frame comprising fixing means making it possible, for example, to fix them on the rear seat of a motor vehicle. Child seats are known in particular provided with universal fastening means designated by the name "ISOFIX", standardized by standard ISO 13216 relating to a universal removable fastening system for a seat adapted to the morphology of children on the seat. rear of motor vehicles.

The purpose of this anchoring system is to avoid assembly errors that may occur with the universal models of these child seats because of their installation difficulties (too short belt, contortions, complex assembly diagram ...), and thus reducing the risk of injury in the event of a collision.

ISO standard 13216 thus specifies the dimensions, general requirements and static resistance requirements of rigid anchorages intended to cooperate with the retaining devices of removable child seats for rear seats in vehicles.

It recommends having two rigid anchors positioned in the area of the junction between the backrest and the seat of a rear seat of the vehicle, these anchors being sized and positioned to allow two metal clips to be easily and securely fixed therein. corresponding locks located on each side of the child seats.

These rigid anchors are generally constituted by a pair of U-shaped metal rings fixed by welding to the rear part of the seat frames of the seats forming the rear bench seat.

However, this solution can only be envisaged for seats the rear part of which is moored to the floor, so as to avoid any pivoting forwards of these anchorages in the event of an impact from the front of the vehicle.

This is not the case for certain types of rear seats mounted movable between a deployed position of use intended for the reception of one or more passengers and in which the rear part of the seat frame rests on the floor. without being attached to it, and a wallet-in position making it possible to maximize the loading volume of the vehicle and in which this seat has tilted forward around a horizontal axis in a substantially vertical position with the backrest which is folded against she.

Another solution, known in particular from patent application WO 2007/061716, consists in welding these metal anchoring rings on a transverse rod moored to the vehicle floor by means of support legs.

Unfortunately, this solution is also not compatible with folding rear seats in the portfolio because the presence of metal wires would prevent them from being folded down.

Subject and summary of the invention

The present invention therefore aims to provide an anchoring device for a child seat compatible with such rear seats that can be folded down in the wallet.

To this end, it proposes an anchoring device for the removable fixing of a child seat on a rear seat of a motor vehicle which can be folded down in the portfolio, said anchoring device comprising two metal anchoring rings mounted on at least one support member intended to be moored to the floor of said vehicle;

characterized in that said metal anchoring rings are pivotally hinged about the same transverse axis on said support member, said device also comprising anti-rotation means intended to be fixed to said back frame of said rear seat and shaped so as to, in the service configuration of said anchoring device, rest in abutment on said rings so as to keep them firmly against a rear tubular cross member of the seat frame of said rear seat.

The fact that the metal anchor rings are pivotally mounted makes it possible to fold them backwards away from the seat of the rear seat so that the latter do not disturb the kinematics of folding in the portfolio position of this back seat.

In addition, the presence of the anti-rotation means makes it possible to prevent any risk of pivoting rearward of these anchoring rings when picking on the latter ISOFIX clamps for the child seat.

According to preferred characteristics of the anchoring device according to the invention:

- Said anti-rotation means consist of a single folded metal wire intended to extend along the lower cross member of said back frame;

- Said metal wire has two portions in a slot being arranged so as to come to rest each in abutment against a said corresponding ring;

- Said metal wire comprises a third niche portion formed between the two said portions and forming a top-tether anchor point for said child seat;

- Said device further comprises stop means intended to be fixed on said rear crossmember and being able to cooperate, in the service configuration of said anchoring device, with said rings so as to prevent them from moving laterally relative to said rear cross member.

- Said stop means comprise two pairs of metal guides each capable of cooperating with a curved portion of a lateral branch of a said corresponding ring;

- Each said guide comprises a sole intended to be welded to said rear cross member and at least one lateral flange bordering said sole;

- Each said guide comprises two said lateral flanges spaced transversely by a distance corresponding substantially to the width of the lateral branches of said rings;

- Said guides are produced by stamping from a metal sheet; and or

- Said rings are rigidly connected to each other by means of two transverse metal rods fixed to each of them and located respectively below and above said curved portions.

Brief description of the drawings

The description of the invention will now be continued with the detailed description of an exemplary embodiment, given below by way of illustration but not limitation, with reference to the appended drawings, in which:

- Figure 1 is a perspective rear view of two adjoining seats forming the rear seat and two anchoring devices according to the invention mounted partly on the floor of a motor vehicle and partly on the seats of the rear seat ;

- Figure 2 shows an enlarged perspective view of the sub-assembly mounted on the floor of one of the two anchoring devices of Figure 1;

- Figure 3 shows an enlargement of detail III of Figure 1; and

- Figures 4 to 6 are side elevational views illustrating the operating kinematics of an anchoring device according to the invention.

Detailed description of an embodiment

In the description which follows and by convention, the terms “front”, “rear”, “upper”, “lower”, “longitudinal” and “transverse” will be defined relative to the mounting position of a vehicle seat automobile in the passenger compartment of this vehicle.

Figure 1 shows a rear seat structure 1 of a motor vehicle, for example of row two, mounted on the floor of this vehicle.

The bench seat structure 1 consists of two independent seat structures 10, 20 arranged side by side in the width direction of the vehicle and having different dimensions: the first seat structure 10 intended to receive the back of a single passenger representing approximately 40% of the total width of the seat frame, while the second seat structure 20 which can accommodate up to two passengers represents approximately 60% of this same width.

Each of the seat structures 10, 20 comprises a seat frame 11, 21 and a back frame 12, 22 pivotally articulated on this seat 11, 21 along a transverse horizontal axis.

The seat frame 11, 21 of each seat structure 10, 20 is pivotally mounted forwards on the vehicle floor around a transverse horizontal axis by means of two pairs of legs 13, 23 welded to the front of this seat frame 11, 21 and pivotally articulated on two metal feet 14, 24 rigidly moored to the floor 2.

Each of the seat structures 10, 20 is able to pass from a deployed position of use intended for the reception of one or more passengers and in which the rear part of its seat frame 11, 21 rests on the floor 2 without being attached to it, in a wallet-in position making it possible to maximize the loading volume of the vehicle and in which this seat frame 11, 21 has tilted forward in a substantially vertical position with the frame file 12, 22 which is folded against it.

Each seat structure 10, 20 is also associated with a respective anchoring device 30 according to the invention for the removable fixing of a child seat (not shown in the figures) provided with ISOFIX locking metal clips.

The anchoring devices 30 each comprise an articulated sub-assembly 40 comprising two rectangular metallic anchoring rings 50 mounted pivotally articulated about a same transverse axis on a metallic support plate 60 fixed to the floor 2 of the vehicle.

In support of FIG. 2, this subset 40 will now be described in more detail.

As can be seen in this figure, the two anchor rings 50 extend on either side of a vertical longitudinal plane of symmetry and are each formed by a single folded metal wire whose two ends are welded l 'one over the other.

The metal wire constituting each of the rings 50 is preferably made of steel and has a diameter advantageously between 6 and 10 mm, for example, 7 or 8 mm.

Each anchoring ring 50 comprises two internal parallel 51 and external 52 lateral branches, as well as two upper 53 and lower transverse branches (not visible in the figures) shorter and connecting respectively the upper and lower ends of these two lateral branches 51, 52.

As illustrated in FIG. 2, the two transverse branches 53 are straight, while the two lateral branches 51, 52 each have two curved lower portions 51A, 52A and upper 51B, 52B so as to give a certain concavity towards the front. each anchor ring 50.

The metal support plate 60 is produced from a cut and folded sheet.

Each anchoring ring 50 is pivotally mounted on the latter by its lower transverse branch which passes through a respective transverse articulation bearing 61 formed by folding on the plate 60 between two orifices 62 produced by cutting.

In order to limit the friction between the anchoring rings 50 and the bearings 61, a cylindrical sleeve 63 made of a plastic material having a low coefficient of friction such as polyacetal (POM) is advantageously interposed between each lower transverse branch and the bearing correspondent 61.

The fixing of the plate 60 on the floor 2 of the vehicle is here carried out by means of four fixing screws (not shown) passing through circular holes 64 formed in this plate 60.

The sub-assembly 40 also comprises two metal rods 71, 72 rigidly connecting to one another the two anchor rings 50, each of these rods 71, 72 extending transversely between the two external lateral branches 52 of the rings 50 and being welded to the latter as well as to the two internal lateral branches 51.

More specifically, the two rods 71, 72 are located respectively below and above the upper curved portions 51B, 52B of the rings 50.

The plate 60 also includes a stop 65 extending substantially vertically from the rear edge of one of the orifices 62 and making it possible to limit the angular movement towards the rear of the two anchoring rings 50.

Each anchoring device 30 also comprises means 80 capable of preventing the pivoting of its anchoring rings 50 towards the rear when the latter rest against the rear cross member 11A, 21A of the seat frame 11, 21 d ' a corresponding seat structure in the deployed position for use (service configuration illustrated in FIGS. 1, 3 and 4).

These anti-pivoting means consist of a single bent metal wire 80 extending transversely along the lower cross member 12A, 22A of the back frame 12, 22 of a corresponding seat structure 10, 20 and both of which ends are welded to the two lateral uprights 12B, 22B, 12C, 22C of this same frame (see FIGS. 4 to 6).

Preferably made of steel, this metal wire 80 has a diameter advantageously between 6 and 10 mm, for example, 7 or 8 mm.

It comprises two square portions 81 arranged laterally at the level of the two rings 50 and arranged so that, in the service configuration of the device 30, rest in abutment against the upper part of these rings 50 in order to hold them firmly against the rear crossmember 11A, 21A of the seat frame 11, 21.

The wire 80 also advantageously comprises a third slot portion 82 formed between the two portions 81 and forming an additional top-tether type anchoring point for the child seat.

For better rigidity, certain transverse portions of this wire 80 situated between two niche portions 81, 82 can also be welded to the lower cross member 12A, 22A of the backrest frame 12, 22.

Each anchoring device 30 further comprises stop means 90 capable of laterally locking these anchoring rings 50 in the service configuration.

These abutment means comprise two pairs of guides 90 advantageously produced by stamping from a metal sheet and being fixed on the rear cross member 11A, 21A of the seat frame 11, 21 of a corresponding seat structure 10, 20.

Each of the guides 90 comprises a sole 91 having a circular arc profile matching the external diameter of the rear cross member 11A, 21A and which is welded to the latter.

Each guide 90 also comprises two parallel lateral edges 92 bordering the sole and being spaced transversely by a distance corresponding substantially to the width of the lateral branches of the rings 50 (that is to say to the diameter of the metal wire constituting them).

The guides 90 are arranged so that, in the service configuration of the device 30, each receives between their flanges 92 forming stops the upper curved portion 51B, 52B of a lateral branch 51, 52 of a ring 50.

We will now quickly describe the operation of an anchoring device 30 with the support of FIGS. 1 and 3 to 6.

In FIGS. 1, 3 and 4, the two seat structures 10, 20 forming the bench structure 1 are in their deployed position of use, while the rings 50 rest against the rear tubular cross member 11A, 21A of the frame seat 11, 21.

In this service configuration, the rings 50 are held firmly against the rear cross member 11A, 21A of the seat frame 11, 21 by the anti-rotation wires 80 so as to avoid any risk of pivoting rearward of these rings 50 when hooking the ISOFIX locking clips located on both sides of a child seat.

These same rings 50 are also retained laterally by the lateral locking guides 90 in order to prevent their deformation under the effect of the transverse stresses undergone during the driving phases of the vehicle.

When the user of the vehicle wishes to move one or both of the seat structures 10 and 20 to the wallet position in order to increase the loading volume of the vehicle, the latter begins by folding down the back frame 12, 22 on the seat frame 11, 21 which has the effect of spreading the anti-rotation wire 80 secured to this back frame 12, 22 of the rings 50 (FIG. 5).

The user can therefore pivot them rearwards until reaching the stop 55 (FIG. 6) where these rings 50 no longer oppose the tilting of the seat frame 11, 21 forwards.

Once the seat structure 10, 20 is in the wallet position, this user no longer has to fold these rings 50 forward against the floor of the vehicle in order to free up the loading space.

According to variant embodiments not shown, the anchoring rings have another profile (for example, plane) and / or the pivoting means of pivoting of the latter on the plate are different.

According to other alternative embodiments not shown, the anti-rotation wires and / or the lateral blocking guides are also different.

The anti-rotation wires can, for example, be devoid of the third niche portion forming an additional top-tether type anchoring point, while the locking guides can each comprise only a single flange forming a stopper judiciously disposed. Each of these blocking guides can also consist of a single metal stop welded to the rear crossmember of the seat frame.

Finally, it should be remembered that the present invention is not limited to the embodiments described and shown, but that it encompasses any other variant of execution within the reach of those skilled in the art.

Claims (10)

1. Anchoring device for the removable fixing of a child seat on a rear seat of a foldable motor vehicle in the portfolio, said anchoring device comprising two metal anchoring rings (50) mounted on at least one support member (60 ) intended to be moored to the floor of said vehicle; characterized in that said metal anchor rings (50) are pivotally hinged about the same transverse axis on said support member (60), said device also comprising anti-rotation means (80) intended to be fixed to said back frame (12, 22) of said rear seat and shaped so that, in the service configuration of said anchoring device, rest in abutment on said rings (50) in order to hold them firmly against a rear tubular cross member (11A , 21A) of the seat frame (11, 21) of said rear seat. 2. Anchoring device according to claim 1, characterized in that said anti-rotation means consist of a single folded metal wire (80) intended to extend along the lower cross member of said back frame (12, 22). 3. Anchoring device according to claim 2, characterized in that said metal wire (80) has two portions in a slot (81) being arranged so as to come to rest each in abutment against a said corresponding ring (50). 4. Anchoring device according to claim 3, characterized in that said metal wire (80) comprises a third slot portion (82) formed between the two said portions (81) and forming a top-tether anchoring point for said child seat. 5. Anchoring device according to one of claims 1 to 4, characterized in that it further comprises stop means (90) intended to be fixed on said rear crossmember (11A, 21A) and being able to cooperate , in the service configuration of said anchoring device, with said rings (50) so as to prevent them from moving laterally relative to said rear crossmember (11A, 21A). 6. Anchoring device according to claim 5, characterized in that said stop means comprise two pairs of metal guides (90) capable of cooperating each with a curved portion (51B, 52B) of a lateral branch (51, 52 ) of a said corresponding ring (50). 7. Anchoring device according to claim 6, characterized in that each said guide (90) comprises a sole (91) intended to be welded to said rear crossmember (11A, 21A) and at least one side edge (92) bordering said sole (91). 8. An anchoring device according to claim 7, characterized in that each said guide (90) comprises two said lateral flanges (92) spaced transversely by a distance corresponding substantially to the width of the lateral branches (51, 52) of said rings (50). 9. An anchoring device according to one of claims 6 to 8, characterized in that said guides (90) are made by stamping from a metal sheet. 10. Anchoring device according to one of claims 6 to 9, characterized in that said rings (50) are rigidly connected to each other by means of two transverse metal rods (71, 72) fixed to each of them and located respectively below and above said curved portions (51B, 52B).