WO2019053349A1

WO2019053349A1 - Reinforced anchor device for removably securing a child seat to the rear bench seat of a motor vehicle

Info

Publication number: WO2019053349A1
Application number: PCT/FR2018/052076
Authority: WO
Inventors: Adalberto CROQUE; Frederic PINTO TEIXEIRA; Edson OLIVEIRA; Edivaldo SANTOS
Original assignee: Psa Automobiles Sa
Priority date: 2017-09-18
Filing date: 2018-08-20
Publication date: 2019-03-21
Also published as: BR112020004615A2; FR3071198B1; FR3071198A1

Abstract

The present invention relates to an anchor device for removably securing a child seat (4) to the rear bench seat of a motor vehicle, said anchor device comprising two straps made of folded metal wire (110, 120), welded onto a supporting plate (130) intended for being secured (2) to said vehicle and capable of serving as anchor points for ISOFIX-type locking members (5) provided on one such child seat (4) added onto said bench seat; said anchor device also comprising two reinforcing metal casings (150, 160) rigidly attached to said plate (130), each such casing extending behind one such corresponding strap (110, 20) against which it is also rigidly attached.

Description

REINFORCED ANCHORING DEVICE FOR THE REMOVABLE FASTENING OF A CHILD SEAT ON THE REAR BENCH OF A MOTOR VEHICLE. Field of the invention

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

Child seats intended to be mounted on a seat of a motor vehicle, referred to as the reported child seat, make it possible to ensure the safety of children transported in road vehicles and especially motor vehicles.

These child seats generally consist of a rigid shell fixed on a frame having fastening means for example for fixing the child seats in the rear seat of a motor vehicle. Children's seats with universal fastening means known by the name "ISOFIX", standardized by the ISO 13216 standard, are known in particular, relating to a universal system for the removable attachment of a seat adapted to the morphology of the children on the seat. rear of motor vehicles.

This anchoring system aims to avoid mounting errors that can occur with the universal models of these child seats because of their installation difficulties (belt too short, writhing, complex assembly scheme ...), and thus reduce the risk of injury in the event of a collision.

The international regulations ECE R14 and R16 specify the dimensions, general requirements and static strength requirements of rigid anchorages intended to cooperate with restraints for removable child seats for vehicle rear seats.

These regulations require two rigid anchors positioned in the area of the seat cushion-seat junction of a seat rear of vehicle, these anchors being dimensioned and positioned to allow to attach easily and securely two corresponding locking metal clamps located on each side of the child seats.

These rigid anchors are generally constituted by a pair of stirrups wire folded U-shaped and whose ends of the two lateral legs are rigidly fixed by welding to the frame of the seat.

This solution is however only feasible for seats whose rear part of the frame is rigidly moored to the floor, so as to avoid any forward pivoting of these anchors in case of impact from the front of the vehicle.

It also requires in advance a substantial reinforcement of this frame which causes significant additional cost and a significant increase in the mass of the seat.

Another known solution is to directly weld these anchors on the floor of the vehicle.

However, this solution has the disadvantage of forcing car manufacturers to provide different floor references in accordance with the standards for restraint of child seats in force in the countries or regions of destination of the vehicle, which leads in particular to an increase in the costs of management and storage.

In order to remedy this problem, patent application EP 0 936 104 A1 discloses an anchoring device intended to be removably mounted on the floor of the vehicle behind a rear seat.

The device comprises a sheet metal plate on which are welded two pairs of upright wire anchoring brackets U shaped and being arranged to come in correspondence with the two side seats of the bench.

This anchoring device also comprises fastening means adapted to cooperate with elements provided on the floor to attach it rigidly and removably to this floor.

In the event of a violent impact from the front of the vehicle and due to the tensile stresses exerted by the child seat clips being locked, these U-shaped stirrups are likely to twist forward and as much as their average plane is tilted relative to the plate resting on the floor.

In order to limit this twisting and to prevent it having an impact on safety, the stirrups are therefore arranged in medium planes slightly inclined relative to the plate, which prevents the use of this type of device. anchorage on vehicle platforms in which the height gap between the lower edge of the rear seat (where the interface area between the ISOFIX child seat locking clips and the callipers) is located and the floor area located just behind this same back seat (and intended to accommodate the platen) exceeds a certain threshold.

Object and summary of the invention

The present invention therefore aims to improve the situation.

It proposes for this purpose an anchoring device for the removable attachment of a child seat on the rear seat of a motor vehicle, said anchoring device comprising two bent wire stirrups, welded to a support plate intended to be moored to the floor of said vehicle and adapted to serve as anchor points for ISOFIX type locking members of said child seat attached to said seat;

characterized in that it further comprises two metal reinforcing cases rigidly fixed to said plate, each said casing extending on the back of a said corresponding yoke against which it is also rigidly fixed.

Thanks to the presence of these reinforcing casings rigidly attached to both the brackets and the plate, they can be arranged in a mean plane much more inclined vis-à-vis the plate.

The anchoring device according to the invention can thus be implemented safely on all of the platforms of motor vehicles, including those having a significant height separation between the lower edge of the rear seat and the floor area. located just behind this same backseat. According to preferred features of the anchoring device according to the invention:

each said stirrup has a transverse hanging strand intended to serve as anchoring point for a said locking member of a child seat, as well as at least one curved lateral leg extending from one of the ends of said transverse strand and being welded to said platen;

each said lateral leg successively comprises a proximal rectilinear section extending rearwardly from the corresponding end of said hooked strand, a rectilinear rear section extending substantially vertically up to said plate, and a lower rectilinear section resting against said platen to which it is rigidly fixed by welding;

- Said lower section extends substantially longitudinally forwards, each said leg further comprising a distal rectilinear section extending said lower section extending parallel to said rear section and joining said proximal section to which its free end is welded;

each said housing comprises a main plane wall extending in a transverse vertical plane and resting against the rear section of at least one said lateral leg of a said corresponding stirrup;

each said casing also comprises a flat roof wall extending forwards partially covering the proximal portion of at least one said lateral leg of a said corresponding stirrup;

each said casing comprises a support foot projecting from the front of said main wall and being welded against said platen as well as on at least the lower portion of a said lateral leg of a said corresponding stirrup;

one of said stirrups comprises a lateral arm extending rearwardly from the end of said hooked strand opposite said leg and being welded to an articulation clevis of said bench rigidly connected to one of the ends of said platen;

at least one of said stirrups comprises two said lateral legs extending from the two ends of said hooked strand and symmetrically with respect to the median vertical longitudinal plane of the latter; and

said casings are each made by stamping from a cut sheet metal.

Brief description of the drawings

The description of the invention will now be continued by the detailed description of an exemplary embodiment, given below by way of illustration but without limitation, with reference to the appended drawings, in which:

- Figure 1 is a perspective view of three quarter rear of a rear seat structure of a motor vehicle and two anchoring devices according to the invention moored to the floor of the vehicle and arranged in line with the two lateral places this bench seat;

- Figure 2 shows an enlargement of the detail II of Figure 1 showing the first anchoring device;

FIG. 3 represents a back view of this first anchoring device;

FIG. 4 is an enlarged perspective view of three quarters front of the outer portion of the first anchoring device;

- Figure 5 is an enlarged perspective view of three quarter of the outer portion of the first anchor device; and

- Figure 6 is an enlargement of detail VI of Figure 1 showing the second anchor. Detailed description of a preferred embodiment

Figure 1 shows a rear seat structure 1 of a motor vehicle, for example of tier two, mounted on the floor 2 of the vehicle.

The seat structure 1 comprises two backrest frames 10, 20 arranged side by side in the width direction of the vehicle and having different dimensions: the first backrest frame 10 intended to receive the back of a single passenger represents about 40 % of the total width of the seat structure, while the second backrest frame 20 can accommodate up to two passengers is about 60% of the same width.

The two backrest frames 10, 20 are articulated pivotally, independently of one another, around the same transverse axis and through two lateral clevises disposed on either side of the seat 1 (The latter, secured to the vehicle structure not being shown in the figures for ease of reading) as well as a central clevis 30 located between these two backrest frames 10, 20 and being secured to the floor 2.

Each of these two backrest frames 10, 20 is thus able to pivot between a raised position in which it is slightly inclined rearwardly with respect to the vertical as illustrated in FIG. 1, and a position folded substantially horizontally. to increase the volume of the luggage compartment.

According to the invention, two anchoring devices 100, 200 are removably mounted on the floor 2 behind the seat structure 1, each being arranged in correspondence with one of the two lateral seats of this bench so as to allow the removable attachment of a respective child seat 4 attached to it and having ISOFIX 5 locking metal grippers.

In the remainder of this description and by convention, the terms "front", "back", "upper", "lower", "longitudinal" and "transverse" will be defined with respect to the mounting position of a device. anchoring according to the invention in the passenger compartment of a motor vehicle.

The anchoring device 100, located in correspondence with the first backrest frame 10 of smaller width, comprises two external and laterally spaced external anchor metal stirrups 110 and fixed rigidly on a metal support plate 130 moored to the floor 2 of the vehicle.

The anchoring device 100 in detail will now be described with reference to FIGS. 2 and 3.

The support plate 130 is constituted by two half-plates 131, 132 each made from a cut sheet metal and stamped the thickness is preferably between 2 and 3 mm (advantageously 2.5 mm), these two half-plates 131, 132 extending in the extension of one another being welded to one another. other at an overlapping area.

This plate 130 is moored to the floor 2 of the vehicle by means of four fastening screws 6 successively passing circular holes formed near its four corners and holes in the floor 2.

As illustrated in FIG. 2, the central clevis 30 is advantageously fastened to the inner end of this support plate 130 via a right angle return 31 extending at the lower end of this yoke 30 under the inner end portion of the plate 130 and being welded thereto. This facilitates mounting and use the fixing holes of the central clevis 30 already formed in the floor 2 to also fix the support plate 130.

The two anchoring brackets 110, 120 intended to serve as anchoring points for the two ISOFIX locking clips 5 of a child seat 4, are each formed by a single folded metal wire, advantageously made of steel and having a diameter advantageously between 6 and 10 mm, for example, 7 or 8 mm.

With the support of FIGS. 4 and 5, the external anchoring stirrup 110 comprises an upper rectilinear straight strand 111 extending transversely and intended to serve as anchoring point for a first locking clip 5 of a child seat 4; as well as two external lateral legs 112 and internal 113, curved P-shaped, extending from the two ends of this hooked strand 111 and symmetrically with respect to the median vertical longitudinal plane of the latter.

Each lateral leg 112, 113 comprises successively:

a rectilinear proximal section 112A, 113A constituting the amount of the Pet extending rearwardly and downwardly from the corresponding end of the hooked strand 111,

a rectilinear rear section 112B, 113B extending vertically and inclining slightly in the direction of the longitudinal plane vertical vertical strand 111 to a raised plate 133 formed on the plate 130 by stamping,

a straight rectilinear section 112C, 113C extending substantially longitudinally forwards while resting against said plate 133 to which it is rigidly fixed by a weld seam, and

- A distal rectilinear section 112D, 113D extending parallel to the rear section 112B, 113B and joining the proximal rectilinear section 112A, 113A at which its free end is fixed rigidly by welding at the central zone of this section 112A, 113A.

This particular conformation of the lateral legs 112, 113 makes it possible to reinforce the mechanical rigidity of the anchoring stirrup 110 and to prevent it from being deformed, in the event of a violent impact from the front of the vehicle, due to the stresses. in tension exerted by the clamp 5 of the child seat 4 being locked there.

In support of FIGS. 2 and 3, the inner anchoring yoke 120 comprises an upper rectilinear hanging strand 121 extending transversely and intended to serve as anchoring point for a second locking plier 5 of a child seat 4, as well as an outer lateral arm 122 and an inner lateral leg 123 extending from the two ends of this hooked strand 121.

The internal lateral leg 123 is similar to the external lateral leg 113 of the external anchor bracket 110 described above, its lower rectilinear section being fixed rigidly by a weld bead against a raised plate 134 formed on the plate 130 by stamping.

The outer lateral arm 122 extends substantially longitudinally rearwardly against the central clevis 30 to which it is fixed rigidly by welding.

Like the lateral leg 123, this lateral arm 122 also makes it possible to reinforce the mechanical rigidity of the anchor yoke 120 and to prevent it from being deformed, in the event of a violent impact by the front of the vehicle, of the makes tensile stresses exerted by the clamp 5 of the child seat 4 being locked therein. In order to further reinforce the mechanical rigidity of the anchoring brackets 110, 120, each of them is associated with a respective reinforcing casing 150, 160 made by stamping from a cut sheet metal and fixed rigidly to the plate 130 as well as than to a respective anchor bracket 110, 120.

With the support of FIGS. 4 and 5, the casing 150 comprises a flat main wall 151 extending in a transverse vertical plane at the rear of the external anchoring stirrup 110 and whose lower edge is welded against the plate raised 133 of the plate 130 by two weld seams.

The main wall 151 also rests against the rectilinear rear sections 112B and 113B of the two lateral legs 112, 113 of this external anchor bracket 110, being attached to at least one of them by a weld bead made on along a slot 152 formed in this main wall 151.

The housing 150 also includes a flat roof wall 154 extending in an upwardly and forwardly inclined plane partially covering the proximal rectilinear sections 112A, 113A of the lateral legs 112, 113 of this outer anchor bracket 110. , being attached to these by two weld seams.

As illustrated in FIG. 4, the casing 150 further includes a support foot 157 projecting from the front of the main wall 151 from its lower part, and being welded against the raised plate 133 of the plate 130 between the two lower sections 112C, 113C of the lateral legs 112, 113 of the external anchor bracket 110.

The foot 157 furthermore comprises two symmetrical lateral extensions 158 in an arc of a circle each partially surrounding a corresponding lower section 112C, 113C to which it is welded.

The housing 160 is identical to the casing 150 but its location vis-à-vis the anchor bracket 120 is different since slightly offset on the inner side of the latter so as not to interfere with the fastening screws 6 and the central clevis 30 (Figure 2). Its main walls 161 and roof 164 thus rest only and respectively against the rear section and the proximal section of the inner lateral leg 123 to which they are also welded.

We will now briefly describe the anchoring device 200 in support of Figure 6.

The latter, situated in correspondence with the lateral seat of the second backrest frame 20 of greater width, comprises two external and laterally spaced external anchoring metal stirrups 210 and fixed rigidly on a metal support plate 230 moored to the floor 2 of the vehicle.

The support plate 230 is formed by stamping from a single piece of cut sheet of the same thickness as that constituting the plate 130.

It is also moored to the floor 2 of the vehicle by means of four fastening screws 6 successively passing circular holes formed near its two outer corners and in its inner part, and holes in the floor 2.

Designed to serve as anchoring points for the two ISOFIX locking clips 5 of a child seat 4, the two anchoring brackets 210, 220 are identical to the external anchoring bracket 110 of the device 100 previously described and are each welded similarly to the latter by the lower sections of their side legs on a respective raised plate 233, 234 formed on the plate 230 by stamping.

Each of the anchoring stirrups 210, 220 is also associated with a respective reinforcing casing 250, 260 identical to the housings 150, 160 of the device 100 and whose lower edge is welded against the corresponding raised plate 233, 234 of the plate 230 by two weld seams.

Each casing 250, 260 is furthermore implanted with respect to the corresponding anchor yoke 210, 220 in a manner identical to the casing 150 with respect to the anchoring yoke 110: its main wall 251, 261 thus resting against the rectilinear rear sections of the two lateral legs of this anchor bracket 210, 220 being fixed to at least one of them by a weld bead formed along a slot in said main wall 251, 261; while its roof wall 254, 264 partially covers the rectilinear proximal sections of the side legs of the anchor yoke 210, 220 being fixed thereto by two welds.

According to alternative embodiments not shown, the anchoring brackets, the plates and / or the reinforcing casings have different profiles or shapes.

It is finally recalled that the present invention is not limited to the embodiments described and shown, but encompasses any other embodiment within the scope of the skilled person.

Claims

Anchoring device for releasably attaching a child seat (4) to the rear seat (1) of a motor vehicle, said anchoring device comprising two folded wire brackets (110, 120; 210, 220), welded to a support plate (130; 230) intended to be moored to the floor (2) of said vehicle and able to serve as anchoring points for ISOFIX type locking members (5) of a said child seat (4) attached to said seat (1);

characterized in that it further comprises two metal reinforcing casings (150, 160, 250, 260) rigidly fixed to said plate (130; 230), each said casing extending on the back of a said corresponding stirrup (110; 120, 210, 220) against which it is also fixed rigidly.

2. anchoring device according to claim 1, characterized in that each said stirrup (110, 120; 210, 220) comprises a transverse hook strand (111, 121) intended to serve as anchor for a said locking member (5) of a child seat (4) and at least one curved side leg (112, 113, 123); extending from one end of said transverse strand (111, 121) and being welded to said platen (130; 230).

3. anchoring device according to claim 2, characterized in that each said lateral leg (112, 113, 123) comprises successively:

a proximal rectilinear section (112A, 113A) extending rearwardly from the corresponding end of said hooked strand (111,

121)

- a straight rear section (112B, 113B) extending substantially vertically to said platen (130; 230), and

- A lower rectilinear section (112C, 113C) resting against said plate (130; 230) to which it is rigidly fixed by welding.

4. Anchoring device according to claim 3, characterized in that said lower section (112C, 113C) extends substantially longitudinally forwards, each said leg (112, 113, 123) further comprising a distal rectilinear section. (112D, 113D) extending said lower section (112C, 113C) extending parallel to said rear section (112B, 113B) and joining said proximal portion (112A, 113A) at which its free end is welded.

5. Anchoring device according to one of claims 3 or 4, characterized in that each said housing (150, 160; 250, 260) comprises a main plane wall (151, 161; 251, 261) extending in a transverse vertical plane resting against the rear section (112B, 113B) of at least one said lateral leg (112, 113, 123) of a corresponding said stirrup (110, 120; 210, 220).

Anchoring device according to claim 5, characterized in that each said housing (150, 160, 250, 260) also comprises a planar roof wall extending forwards partially covering the proximal section (112A, 113A) of at least one said lateral leg (112, 113, 123) of a said corresponding stirrup (110, 120; 210, 220).

7. Anchoring device according to one of claims 5 or 6, characterized in that each said housing (150, 160; 250, 260) comprises a support foot (157) projecting in front of said main wall (151, 161; 251, 261) and being welded against said plate (130; 230) as well as on at least the lower section (112C, 113C) of a said lateral leg (112, 113, 123) of a said corresponding stirrup (110, 120; 210, 220).

8. Anchoring device according to one of claims 2 to 7, characterized in that one (120) of said brackets (110, 120) comprises a lateral arm (122) extending rearwardly from the end of said hooked strand (121) opposite said leg (123) and being welded to a hinge clevis (30) of said seat (1) rigidly connected to one end of said plate (130).

9. Anchoring device according to one of claims 2 to 8, characterized in that at least one (110; 210, 220) of said stirrups (110, 120; 210, 220) comprises two said lateral legs ( 112, 113) extending from both ends of said hooked strand (111) and symmetrically with respect to the median vertical longitudinal plane thereof.

10. Anchoring device according to one of claims 1 to 9, characterized in that said housings (150, 160; 250, 260) are each made by stamping from a cut sheet.