SAE J4002_201001

Introduction
1 Scope
  1.2 Rationale
2 Normative References
3 Definitions
  3.1 H-point
  3.2 H-point Travel Path
  3.3 SgRP (Seating Reference Point), R-point, Design
       H-point
  3.4 AHP (Accelerator Heel Point)
  3.5 PRP (Pedal Reference Point)
  3.6 FRP (Floor Reference Point, Rear Passenger)
4 Measurement Procedure for the Three-dimensional H-point
  Machine
  4.1 Summary of Installation Procedure
  4.2 Prepare Vehicle and Seat
  4.3 Determine the H-point Travel Path (optional)
  4.4 Adjust Seat to Design Internet
  4.5 Install HPM Cushion and Back Pan Assembly
  4.6 Load the HPM
  4.7 Soak Time
  4.8 Record Measurements - Digitize HPM Points
5 Optional Measurements for Driver Seat
  5.1 Leg and Shoe Installations
  5.2 Record Measurements
6 Optional Measurements for 2nd or Succeeding Row
  Passenger Seats
  6.1 Leg and Shoe Installation
  6.2 Record Measurements for Rear Passengers
7 Additional Optional Measurements
  7.1 Effective Head Room
8 Remove the HPM
9 Notes
  9.1 Marginal Indicia
Appendix A (Normative) Description of the
                       Three-Dimensional H-Point Machine
                       (HPM)
  A.1 Availability
  A.2 Major Components
  A.3 Reference Points and Angles
Appendix B (Informative) HPM Specification and
                         Tolerances
  B.1 Tolerances
  B.2 Reference Posture for Specifications
  B.3 Shoe Tool Dimensions
  B.4 Lengths
  B.5 Widths
  B.6 Heights
  B.7 Radii
  B.8 Weight, HPM Only
  B.9 Support Points
  B.10 Divot Point Locations
  B.11 Muslin Cloth
  B.12 Check That HPM is Within Tolerance
       Specifications
Appendix C (Informative) HPM Field Checking
                         Procedure
  C.1 Purpose
  C.2 Equipment Required for Checking
  C.3 HPM Measurement Locations
  C.4 Summary of Measurements and Tolerances
  C.5 Checking Procedures
Appendix D (Informative) H-Point Design (HPD) Tool
                         Description
  D.1 H-Point Design tool (HPD)
Bibliography

This Standard provides the specifications and procedures for using the H-point machine (HPM1) to audit vehicle seating positions.

This Standard provides the specifications and procedures for using the H-point machine (HPM2x) to audit vehicle seating positions. The HPM is a physical tool used to establish key reference points and measurements in a vehicle (see Figure 1 and Appendix A). The H-point design tool (HPD) is a simplified CAD2x version of the HPM, which can be used in conjunction with the HPM to take the optional measurements specified in this document, or used independently during product design (see Appendix D).These H-point devices provide a method for reliable layout and measurement of occupant seating compartments and/or seats. This document specifies the procedures for installing the H-point machine (HPM) and using the HPM to audit (verify) key reference points and measurements in a vehicle.The devices are intended for application at designated seating positions. They are not to be construed as tools that measure or indicate occupant capabilities or comfort. They are not intended for use in defining or assessing temporary seating, such as folding jump seats.