1、_SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising theref
2、rom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2010 SAE International All rights reserved. No part of this publication ma
3、y be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4970 (outside USA)
4、Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J4002_201001SURFACEVEHICLESTANDARDJ4002 JAN2010 Issued 2002-06Revised 2010-01 Superseding J4002 AU
5、G2005 H-Point Machine (HPM-II) Specifications and Procedure for H-Point DeterminationAuditing Vehicle Seats RATIONALEThe procedures for auditing the seat are essentially unchanged from the previous version of this standard. The most significant change is that the Ball of Foot (BOF) of the shoe does
6、not have to be on the pedal surface. The HPM-II shoe can contact the pedal at any point(s) on the bottom of the shoe. The term Pedal Reference Point (PRP) has been deleted (since the BOF may not be on the pedal) and replaced by a new term called the Ball of Foot Reference Point (BOFRP). The AHP to B
7、OF distance was changed from 200 mm to 203 mm to be consistent with SAE J826, J1100:2009, and vehicle manufacturers around the world. The following physical modifications were made to HPM-II. The flat part of the shoe bottom was extended from 200 to 203 mm. A new scale was added to the top of the sh
8、oe to aid in determining the pedal contact point. A new H-point divot was added to allow CMM point taking from above. The knee angle scale was recessed to improve its durability and reoriented to improve its readability. Several figures were revised to illustrate these changes. The terms Pedal Plane
9、 and Pedal Plane Angle (PPA) have been replaced by Shoe Plane and Shoe Plane Angle (SPA). These new terms more accurately convey the meaning. SPA is a side view angle that is provided by the vehicle manufacturer.TABLE OF CONTENTS INTRODUCTION. 4 1. SCOPE 52. NORMATIVE REFERENCES . 62.1 Applicable Pu
10、blications . 62.1.1 SAE Publications . 63. DEFINITIONS . 63.1 H-point . 63.2 H-point Travel Path . 63.3 SgRP (Seating Reference Point), R-point, Design H-point . 63.4 AHP (Accelerator Heel Point) 73.5 BOFRP (Ball of Foot Reference Point) . 73.6 FRP (Floor Reference Point, Rear Passenger) 73.7 LSP (L
11、umbar Support Prominence) 73.8 SPA (Shoe Plane Angle) . 7SAE J4002 Revised JAN2010 Page 2 of 574. MEASUREMENT PROCEDURE FOR THE THREE-DIMENSIONAL H-POINT MACHINE 74.1 Summary of Installation Procedure . 84.1.1 Measured Versus Design Values . 84.2 Prepare Vehicle and Seat . 84.2.1 Vehicle 84.2.2 Seat
12、 . 84.3 Determine the H-point Travel Path (Optional) 94.4 Adjust Seat to Design Intent . 104.4.1 Move Seat to Design Intent Position . 104.4.2 Torso Angle and Cushion Angle . 114.4.3 Seat in Front of Test Seat . 124.5 Install HPM Cushion and Back Pan Assembly . 124.5.1 Install the Cushion Pan . 124.
13、5.2 Install the Back Pan 134.5.3 Level the HPM . 134.6 Load the HPM . 134.6.1 Load the Cushion Pan 144.6.2 Load the Back Pan 144.7 Soak Time . 154.8 Record MeasurementsDigitize HPM Points 154.8.1 H-point . 154.8.2 Torso Angle and Cushion Angle . 154.8.3 Lumbar Support Prominence 154.8.4 Summary of D
14、river Measurements . 155. OPTIONAL MEASUREMENTS FOR DRIVER SEAT . 165.1 Leg and Shoe Installations 165.1.1 Mark Accelerator pedal Centerline . 165.1.2 Install the Shoe Fixture . 165.1.3 Install the Shoe Tool . 165.1.4 Install Leg Segments 175.2 Record Measurements 195.2.1 Shoe Plane Angle . 195.2.2
15、Ball of Foot Reference Point . 195.2.3 Accelerator Heel Point 195.2.4 AHP to BOFRP Lateral Offset . 205.2.5 Knee Angle and Ankle Angle 205.2.6 Thigh Angle and Hip Angle . 206. OPTIONAL MEASUREMENTS FOR 2ND OR SUCCEEDING ROW PASSENGER SEATS . 206.1 Leg and Shoe Installation . 206.1.1 Install the Shoe
16、 Tool . 216.1.2 Install Leg Segments 226.2 Record Measurements for Rear Passengers . 246.2.1 Floor Reference Point (FRP) 256.2.2 Floor Plane Angle 256.2.3 Knee Clearance and Leg Room . 257. ADDITIONAL OPTIONAL MEASUREMENTS 267.1 Effective Head Room 267.1.1 Install the Head Room Fixture 267.1.2 Measu
17、re Effective Head Room . 268. REMOVE THE HPM . 269. NOTES 279.1 Marginal Indicia . 27SAE J4002 Revised JAN2010 Page 3 of 57APPENDIX A (NORMATIVE) DESCRIPTION OF THE THREE-DIMENSIONAL H-POINT MACHINE (HPM) 28A.1 AVAILABILITY . 28A.2 MAJOR COMPONENTS . 28A.2.1 BACK PAN ASSEMBLY 28A.2.2 CUSHION PAN . 2
18、9A.2.3 LOWER LEG SEGMENT 29A.2.4 THIGH SEGMENT 29A.2.5 SHOE TOOL AND SHOE FIXTURE . 30A.2.6 SPRING-LOADED PROBE . 31A.2.7 INCLINOMETER (ELECTRONIC LEVEL) 31A.2.8 WEIGHTS . 31A.2.9 HEAD ROOM FIXTURE . 31A.3 REFERENCE POINTS AND ANGLES . 31A.3.1 PIVOT LOCATIONS 31A.3.2 SUPPORT POINTS 32A.3.3 DIVOT POI
19、NTS . 33A.3.4 KEY REFERENCE POINTS AND LINES . 34A.3.5 POSTURE ANGLES AND LSP . 35APPENDIX B (INFORMATIVE) HPM SPECIFICATION AND TOLERANCES . 37B.1 TOLERANCES 37B.2 REFERENCE POSTURE FOR SPECIFICATIONS 37B.3 SHOE TOOL DIMENSIONS . 39B.4 LENGTHS . 39B.5 WIDTHS 40B.6 HEIGHTS 40B.7 RADII . 40B.8 WEIGHT
20、, HPM ONLY . 41B.9 SUPPORT POINTS 41B.10 DIVOT POINT LOCATIONS . 42B.11 MUSLIN CLOTH . 42B.12 CHECK THAT HPM IS WITHIN TOLERANCE SPECIFICATIONS . 42APPENDIX C (INFORMATIVE) HPM FIELD CHECKING PROCEDURE 43C.1 PURPOSE . 43C.2 EQUIPMENT REQUIRED FOR CHECKING 43C.2.1 USER PROVIDED EQUIPMENT 43C.2.2 CHEC
21、KING FIXTURES 43C.2.3 MEASUREMENT EQUIPMENT 44C.3 HPM MEASUREMENT LOCATIONS . 45C.4 SUMMARY OF MEASUREMENTS AND TOLERANCES 46C.5 CHECKING PROCEDURES . 47C.5.1 CUSHION PAN . 47C.5.2 LSP SCALE CHECKS AT -15, +25, AND 0 48C.5.3 BACK PAN 49C.5.4 HEAD ROOM PROBE 50C.5.5 THIGH SEGMENT 51C.5.6 LEG . 52APPE
22、NDIX D (INFORMATIVE) H-POINT DESIGN (HPD) TOOL DESCRIPTION. 55D.1 H-POINT DESIGN TOOL (HPD) . 55D.1.1 FILE FORMAT 55D.1.2 DATUM LINES 56BIBLIOGRAPHY . 57 SAE J4002 Revised JAN2010 Page 4 of 57INTRODUCTIONThe tools and procedures for H-point determination given in this standard are based on the new S
23、AE H-Point Machine (HPM-II).H-point devices are used during vehicle design and development to establish interior reference points and dimensions for occupant packaging, and to validate the location of these key reference points and dimensions on physical properties during audits.H-point devices are
24、also used for the design and validation of seats. However, in these instances, the reference points and dimensions are defined relative to the seat structure and/or surface, rather than the vehicles interior. The procedures for positioning the H-point devices in seats do not require the use of the s
25、hoe tool or leg segments.For convenience and simplicity, many terms associated with H-point devices use human body parts in their name. However, they should not be construed as measures that indicate occupant accommodation, human capabilities, or comfort. H-point devices do not represent the size or
26、 posture of any category of occupant. a. Key Differences from SAE J826 Compared to the H-point machine described in SAE J826, the changes made have resulted in improved repeatability, greater ease of use, and additional features and measurement capabilities. All efforts were made to achieve these im
27、provements while minimizing their impact on the location of reference points and measurements. Several of the changes are discussed below. 1. Separate Components For the HPM-II, the legs (upper and lower), shoe, cushion pan and back pan are all separate pieces. This greatly improves the ease of inst
28、allation. 2. Legless Manikin The new tools allow the H-point location to be defined without having to attach the legs. This is a major advantage of the HPM-II. The new procedure is based on installing the HPM-II without legs. Use of legs is optional. 3. Shoe Tool Several improvements were made to th
29、e shoe tool and how it is positioned in the vehicle, including: replacing the Pedal Reference Point (PRP) with a new Ball of Foot Reference Point (BOFRP), and defining a new standard procedure for positioning the shoe on the pedal. 4. Cushion Angle The cushion angle can now be measured independently
30、 of thigh angle, and at the same time the other measurements are made. Previously, cushion angle was measured from the thigh line, and required a separate installation of the HPM.5. Lumbar Support The articulation of the back pan assembly allows the HPM-II to be better seated in contoured seats. It
31、also provides a new measurement called Lumbar Support Prominence (LSP). This measurement provides an indication of the amount the seat back is contoured to provide support for the lumbar spine. The contour of the new back pan assembly is most similar to the original H-point machine when the HPM-II i
32、s in a neutral posture (LSP equals zero). SAE J4002 Revised JAN2010 Page 5 of 57b. Time period for coexistence of SAE J826 and SAE J4002 SAE J4002 and SAE J826 shall co-exist for a transition period of at least 10 years, preferably no longer, from the 2009 publication date of SAE J4002. Following th
33、is transition period SAE J826 will be withdrawn. During the transition period, it remains up to the vehicle designers to decide which HPM to use. Regulatory bodies and other parties that need to know shall be informed regarding which HPM was used. 1. SCOPE This Standard provides the specifications a
34、nd procedures for using the H-point machine (HPM1) 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 CAD2version of the HPM, which can be use
35、d 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 t
36、he 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
37、 or comfort. They are not intended for use in defining or assessing temporary seating, such as folding jump seats. FIGURE 1 - SIDE VIEW OF HPM, INCLUDING OPTIONAL COMPONENTS 1All references to H-point machine or HPM in this standard refer to the new SAE H-point machine (HPM-II), unless otherwise not
38、ed.2CAD is an acronym for computer-aided design. In a general sense, it has come to encompass any software system/approach to automotive design and development, and is often used to refer to CAE (computer-assisted engineering) and CAM (computer-assisted manufacturing) software systems as well.SAE J4
39、002 Revised JAN2010 Page 6 of 572. NORMATIVE REFERENCES 2.1 Applicable Publications This document contains provisions which reference the following documents. At the time of publication, the indicated editions of these references were valid. Since all publications are subject to revision or deletion
40、, users of this document are encouraged to refer to the most recent published editions of these referenced documents. Information obtained using the following publications is needed for application of the procedures described in this document. 2.1.1 SAE Publications Available from SAE International,
41、 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.SAE J1100 Motor Vehicle Dimensions SAE J182 Motor Vehicle Fiducial Marks and Three-Dimensional Reference System 3. DEFINITIONS For the purposes of this Standard, t
42、he following definitions apply. Several of the reference points established with an H-point device are required for the subsequent positioning of other design devices, such as head contours, eyellipses, and reach curves. The most important reference points established by an H-point device are the H-
43、point, the H-point travel path, the SgRP (Seating Reference Point), the AHP (Accelerator Heel Point), and the BOFRP (Ball of Foot Reference Point). These reference points are illustrated in Figure A8. Terms used in this document but not defined herein are defined in SAE J1100. 3.1 H-point Point at t
44、he pivot center of the back pan and cushion pan assemblies, located on the lateral centerline of the H-point device (HPM or HPD).NOTE 1: The H-point is also the intersection of the cushion line and the torso line. When an H-point device is properly positioned within a vehicle either in CAD or in an
45、actual physical property the location of the H-point relative to the vehicle is used as a vehicle reference point. If the seat is moved, the location of the H-point within the vehicle is changed. Therefore, adjustable seats will have more than one H-point location, while fixed seats will have only o
46、ne H-point location. NOTE 2: H-points are often referred to as hip points or hip pivot points. They simulate but do not precisely represent the location of the human hip joint. 3.2 H-point Travel Path All possible locations of the H-point provided by the full range of seat adjustments (horizontal, v
47、ertical or tilt) for a givendesignated seating position. 3.3 SgRP (Seating Reference Point), R-point, Design H-point Manufacturers intended location for a design H-point, which is specifically designated as R-point or SgRP, and which: a. is the fundamental reference point used to establish occupant
48、accommodation tools and dimensions; b. simulates the position of the pivot center of the human torso and thigh; SAE J4002 Revised JAN2010 Page 7 of 57c. has coordinates established with respect to the designed vehicle structure; d. establishes the rearmost normal design driving or riding H-point of
49、each designated seating position, which accounts for all modes of adjustment: horizontal, vertical and tilt that are available for the seat, but does not include seat travel used for purposes other than normal driving and riding 3.4 AHP (Accelerator Heel Point) Point representing the Heel of Shoe (HOS) location on the depressed floor covering, when the bottom of shoe is in contact with the undepressed accelerator pedal and the ank
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