Document ID: chunk:federal_register_of_legislation:F2010C00408:body:0:p29
Version: federal_register_of_legislation:F2010C00408
Segment Type: other
Provision Reference: 
Character Range: 79571–82233

the top of the back pan sufficient to level the 3-D H machine's seat pan on the seat.

       4.13. Holding the T-bar to prevent the 3-D H machine from sliding forward on the seat cushion, proceed as follows:

           (a) return the back pan to the seat-back;

           (b) alternately apply and release a horizontal rearward load, not to exceed 25 N, to the back angle bar at a height approximately at the centre of the torso weights until the hip angle quadrant indicates that a stable position has been reached after load release.  Care shall be exercised to ensure that no exterior downward or lateral loads are applied to the 3-D H machine.  If another level adjustment of the 3‑D H machine is necessary, rotate the back pan forward, re-level, and repeat the procedure from paragraph 4.12.

       4.14. Take all measurements:

       4.14.1. The coordinates of the "H" point are measured with respect to the three-dimensional reference system.

       4.14.2. The actual torso angle is read at the back angle quadrant of the 3-D H machine with the probe in its fully rearward position.

       4.15. If a re-run of the installation of the 3-D H machine is desired, the seat assembly should remain unloaded for a minimum period of 30 min. prior to the re-run.  The 3-D H machine should not be left loaded on the seat assembly longer than the time required to perform the test.

       4.16. If the seats in the same row can be regarded as similar (bench seat, identical seats, etc.) only one "H" point and one "actual torso angle" shall be determined for each row of seats, the 3‑D H machine described in Appendix 1 to this Annex being seated in a place regarded as representative for the row.  This place shall be:

       4.16.1. in the case of the front row, the driver's seat;

       4.16.2. in the case of the rear row or rows, an outer seat.

 _________________
 Annex 6 - Appendix 1

 DESCRIPTION OF THE THREE DIMENSIONAL "H" POINT MACHINE*

 (3-D H machine)

       1. Back and seat pans

        The back and seat pans are constructed of reinforced plastic and metal; they simulate the human torso and thigh and are mechanically hinged at the "H" point.  A quadrant is fastened to the probe hinged at the "H" point to measure the actual torso angle.  An adjustable thigh bar, attached to the seat pan, establishes the thigh centreline and serves as a baseline for the hip angle quadrant.

       2. Body and leg elements

        Lower leg segments are connected to the seat pan assembly at the T-bar joining the knees, which is a lateral extension of the adjustable thigh bar.  Quadrants are incorporated in the lower leg segments to measure