Document ID: chunk:federal_register_of_legislation:F2012C00357:reg:1:p10
Version: federal_register_of_legislation:F2012C00357
Segment Type: reg
Provision Reference: reg 1 (pt 10/19)
Character Range: 174860–177735

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.

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Annex 15 - 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 knee angles.  Shoe and foot assemblies are calibrated to measure the foot angle.  Two spirit levels orient the device in space.  Body element weights are placed at the corresponding centres of gravity to provide seat penetration equivalent to a 76 kg male.  All joints of the 3‑D H machine should be checked for free movement without encountering noticeable friction.

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*/ For details of the construction of the 3‑D H machine refer to Society of Automobile Engineers (SAE), 400 Commonwealth Drive, Warrendale, Pennsylvania 15096, United States of America.

The machine corresponds to that described in Standard ISO 6549:1980.

Figure 1

3‑D H machine elements designation

Figure 2

Dimensions of the 3‑D  machine elements and load distribution

Annex 15 ‑ Appendix 2

THREE‑DIMENSIONAL REFERENCE SYSTEM

      1. The three‑dimensional reference system is defined by three orthogonal  planes established by the vehicle manufacturer (see figure). */

      2. The vehicle measuring attitude is established by positioning the vehicle on the supporting surface such that the co‑ordinates of the fiducial marks correspond to the values indicated by the manufacturer.

      3. The co‑ordinates of the "R" point and the "H" point are established in relation to the fiducial marks defined by the vehicle manufacturer.

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*/ The reference system corresponds to Standard ISO 4130:1978.
Annex 15 ‑ Appendix 3

REFERENCE DATA CONCERNING SEATING POSITIONS

1. Coding of reference data

      Reference data are listed consecutively for each seating position.  Seating positions are identified by a two‑digit code.  The first digit is an Arabic numeral and