Document ID: chunk:federal_register_of_legislation:F2019C00053:front:0:p28
Version: federal_register_of_legislation:F2019C00053
Segment Type: other
Provision Reference: 
Character Range: 77887–80821

likely to contribute to the vehicle structure may be fitted.

The test may be restricted to the ISOFIX position relating to only one seat or group of seats on the condition that:

            a)         The ISOFIX position concerned have the same structural characteristics as the ISOFIX position relating to the other seats or group of seats and,

            b)        Where such ISOFIX positions are fitted totally or partially on the seat or group of seats, the structural characteristics of the seat or group of seats are the same as those for the other seats or groups of seats.

6.6.3.                         If the seats and head restraint are adjustable, they shall be tested in the position defined by the technical service within the limited range prescribed by the car manufacturer as provided in appendix 3 of annex 17 of Regulation No. 16.

         6.6.4.                         Forces, directions and excursion limits.

6.6.4.1.                   A force of 135 N ± 15 N shall be applied to the centre of the lower front crossbar of the SFAD in order to adjust the fore-aft position of the SFAD rearward extension to remove any slack or tension between the SFAD and its support.

6.6.4.2.                   Forces shall be applied to the static force application device (SFAD) in forward and oblique directions according to table 1.

                     Table 1: Directions of test forces

Forward  0° 5°                                                                                                                8 kN 0.25 kN
Oblique  75° 5° (to both sides of straight forward, or if any worst case side, or if both side are symmetric, only one side)  5 kN 0.25 kN

Each of these tests may be performed on different structures if the manufacturer so requests.

Forces in the forward direction shall be applied with an initial force application angle of 10 ± 5° above the horizontal. Oblique forces shall be applied horizontally 0° ± 5°. A pre-load force of 500 N ± 25 N shall be applied at the prescribed loading point X indicated in figure 2 annex 9. Full application of the force shall achieved within a period of 2 s or less. The force shall be maintained for a minimum period of 0.2 s.

All measurements shall be made according to ISO 6487 with CFC of 60 Hz or any equivalent method.

         6.6.4.3.                   Tests of ISOFIX anchorages system only:

         6.6.4.3.1.            Forward direction force test:

Horizontal longitudinal  excursion  (after pre-load) of point X of SFAD during application of the 8 kN 0.25 kN force shall be limited to 125 mm and permanent deformation including partial rupture or breakage of any ISOFIX low anchorage or surrounding area shall not constitute failure if the required force is sustained for the specified time.

         6.6.4.3.2.            Oblique direction force test:

Excursion in the direction of the force (after pre-load) of point