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Modification of R16/R129 Support Leg Volume Modification of R16/R129 Support Leg Volume

Modification of R16/R129 Support Leg Volume - PowerPoint Presentation

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Uploaded On 2022-08-04

Modification of R16/R129 Support Leg Volume - PPT Presentation

Submitted by the experts from CLEPA 70 th session of GRSP 06 10 th December 2021 Informal document GRSP7018 70th GRSP 610 Dec 2021 ID: 935161

leg support iso volume support leg volume iso amp vehicle 200 seat justification additional f2x height large grsp change

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Presentation Transcript

Slide1

Modification of R16/R129 Support Leg Volume

Submitted by the experts from CLEPA70th session of GRSP, 06 – 10th December 2021

Informal document

GRSP-70-18

70th

GRSP, 6-10 Dec. 2021, agenda item 11

Slide2

Proposal

2

CLEPA propose to increase the height of the support leg volume to improve compatibility between support leg volume and ISO/R2 & ISO/F2X volumes

This change would require R129 & R16 to be updated with this modification (GRSP/2021/25 & GRSP/2021/26)

This change is important for large rearward facing ECRS designs

This change will not reduce the support leg compatibility with vehicles

200

200

Slide3

Justification (1/6)

3

UN Regulation No. 16 defines the envelope dimensions of ISO/R2 & ISO/F2X CRF envelopes

Dashed line 2) represents the area where a support leg or similar may protrude. For the ISO/F2X envelope, this is indicated with a height of 200 mm (red dotted line)

The proposal is to increase the support leg volume height to match this 200 mm dimension

Slide4

Justification (2/6)

4

Increasing the height of the support leg volume would create a better match with both i-size ISO volumes

Particularly useful for large rearward facing CRS designs with support legs

Will increase design space for support leg & misuse mechanisms & electronics for user misuse warnings

Environmental benefits - improved load paths leads to a reduction in materialsPotential to reduce CRS weight, improving handling for consumers

200

115

ISO

/F2X

ISO/R2

 

200

115

Slide5

Justification (3/6)

5

The additional support leg volume already overlaps with the ISO/R2 volume and therefore little or no extra space is required (depending on ISOFIX position)

ISOFIX

anchors

at 20mm

ISOFIX

anchors

at

7

0mm

Slide6

Justification (4/6)

6

The additional space required by extending the support leg volume is available in vehicles that can already fit the support leg volume

This additional support leg volume unused in the vehicle (100 vehicles)

If contact between the child seats and vehicle seat occurs, it is at the top of the seat, not where the additional support leg volume would be

200

Slide7

Justification (5/6)

7

Additional support leg volume unused in the vehicle

Vehicle contact between child seats and vehicle seat occur at the top of the seat

Examples (Small Off-Road)

Infant Carrier

Large RF

Slide8

Justification (6/6)

8

Additional support leg volume unused in the vehicle

Vehicle contact between child seats and vehicle seat occur at the top of the seat

Examples (Supermini)

Infant Carrier

Large RF

Slide9

CONCLUSION

9

Increasing the height of the support leg volume would improve compatibility between support leg volume and ISO/R2 & ISO/F2X volumes

Will increase design space for support leg & misuse mechanisms & electronics for user misuse warnings

Environmental benefits - improved load paths leads to a reduction in materials

This change is important for large rearward facing ECRS designs This change will not reduce the support leg compatibility with vehicles