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: +1 724-776-4970 (outside US
4、A) 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/J1052_201009SURFACEVEHICLESTANDARDJ1052 SEP2010 Issued 1974-08Revised 2010-09 Superseding J1052
5、 OCT2009 Motor Vehicle Driver and Passenger Head Position RATIONALEThe side view angle of the adjustable seat head contour shown in Figure 3 was corrected to 12 degrees, the value it was in the 2005 version of SAE J1052. TABLE OF CONTENTS 1. SCOPE 22. REFERENCES 22.1 Applicable Publications . 22.1.1
6、 SAE Publications . 23. USING THE HEAD POSITION CONTOURS IN DESIGN 24. SELECTING THE CORRECT HEAD POSITION CONTOUR 24.1 Seat Track Travel, TL23 . 34.2 Accommodation Percentile Values . 34.3 Occupant Seat Location 34.3.1 Front Row 34.3.2 Second and Succeeding Rows . 35. HEAD POSITION CONTOUR GEOMETRY
7、 . 35.1 Construct an Ellipsoid . 35.2 Discard Lower Half 45.3 Extend Contour, Driver and Front Row Outboard Passenger Only 45.4 Orient Axes . 56. LOCATING HEAD POSITION CONTOURS IN CLASS A VEHICLES . 56.1 Locating from Cyclopean Eyellipse Centroid 56.2 Locating from Vehicle Grid 57. ASSESSING HEAD C
8、LEARANCE . 68. BIBLIOGRAPHY . 99. NOTES 99.1 Marginal Indicia . 9APPENDIX A DEVELOPMENT OF HEAD POSITION CONTOURS 10APPENDIX B PROCEDURE FOR CLASS B VEHICLES . 13 Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license f
9、rom IHS-,-,-SAE J1052 Revised SEP2010 Page 2 of 141. SCOPE This SAE Standard describes head position contours and procedures for locating the contours in a vehicle. Head position contours are useful in establishing accommodation requirements for head space and are required for several measures defin
10、ed in SAE J1100. Separate contours are defined depending on occupant seat location and the desired percentage (95 and 99) of occupant accommodation. This document is primarily focused on application to Class A vehicles (see SAE J1100), which include most personal-use vehicles (passenger cars, sport
11、utility vehicles, pick-up trucks). A procedure for use in Class B vehicles can be found in Appendix B.2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publications s
12、hall apply. 2.1.1 SAE Publications Available from SAE International, 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 J941 Motor Vehicle Drivers Eye Locations SAE J1100 Motor Vehicle Dimensions SAE J1516 Accom
13、modation Tool Reference Point SAE J1517 Driver Selected Seat Position 3. USING THE HEAD POSITION CONTOURS IN DESIGN The following considerations should be kept in mind when applying head position contours during design. Head position contours are models that describe occupant head locations for a po
14、pulation, not an individual. In this document, the head contours for Class A vehicles are based on a USA population having an equal number of males and females. Head position contours are constructed as tangent cutoff tools by applying a mean head profile (SAE Paper 750356) to the appropriate tangen
15、t cutoff eyellipse. (See Figure 1.) This means that a plane drawn tangent to the surface of a 95 percentile head position contour will result in 95% of the head locations lying on one side of the plane, while 5% will be on the other. It does not mean that the 95th percentile head position contour co
16、ntains 95 percent of occupant head locations inside its surface. The surface of a head position contour represents the surface of the population of heads with hair. If the top of the 95% head contour is just touching a vehicle surface, this means that 5% of a population consisting of half males/half
17、 females would have their head or hair contacting a vehicle surface when sitting in their preferred seating posture. Designers will need to add additional clearance around the head contours in order to prevent occupants head or hair from touching vehicle surfaces and structures in normal driving or
18、riding postures.4. SELECTING THE CORRECT HEAD POSITION CONTOUR Three factors determine which head contour to use: seat track travel length (TL23), desired accommodation percentile value, and occupant seat location.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo rep
19、roduction or networking permitted without license from IHS-,-,-SAE J1052 Revised SEP2010 Page 3 of 144.1 Seat Track Travel, TL23 The size and location of the head position contour varies depending on the amount of fore/aft seat track travel available. There are three categories of seat track travel:
20、 0 mm (fixed seat), up to 133 mm, and greater than 133 mm. Seat track travel also determines the side view angle of the contour. For adjustable seats (track travel greater than 0 mm), the head contour is tipped down in front 12 degrees. Head contours for fixed seats are not tipped. 4.2 Accommodation
21、 Percentile Values Head position contours for 95th and 99th accommodation percentiles are provided. Percentile value affects the size of the contour, with the 99th percentile contour larger than the 95th. Only the 95th percentile head position contours are required for dimensions given in SAE J1100.
22、 4.3 Occupant Seat Location 4.3.1 Front Row For the driver and front outboard passenger, the head position contours are 23 mm wider in rear view than for other occupants. The additional 23 mm is located outboard of occupant centerline. There are 6 possible head position contours available for the dr
23、iver and front outboard passenger depending on the amount of seat track travel available and the desired accommodation percentile value. Adjustable seat head position contours are also used for the center occupant in the front row. In this case, the 23 mm segment should not be incorporated into the
24、adjustable seat head contour. 4.3.2 Second and Succeeding Rows For occupant seat locations behind the front row, only two contours are provided 95th percentile fixed seat and 99th percentile fixed seat.If the 2ndor succeeding row seat has fore/aft H-point adjustment, with a seat back angle that is e
25、ither fixed or adjustable, there are no field data available on which to base a procedure for selecting or locating a head contour. Until such data are available, select the 95% or 99% fixed seat head contour, locate it from the manufacturers SgRP and design torso angle, and then sweep the head cont
26、our along the range of normal riding fore/aft seat adjustment. The swept volume defines the range of rider head locations. If the manufacturers SgRP or design torso angle is unknown, use the rearmost, lowest normal riding position and a torso angle of 25 degrees to position the contour. 5. HEAD POSI
27、TION CONTOUR GEOMETRY Head position contours are constructed by modifying 3-D ellipsoids. The size of the initial ellipsoid, defined by the length of the X, Y, and Z axes, depends on the desired accommodation percentile value and amount of seat track travel. The centroid of the initial ellipsoid is
28、the point used for positioning the completed head contour. The size and shape of the completed head contour depends on the desired percentile value, amount of seat track travel, and occupant seat location. 5.1 Construct an Ellipsoid Construct the appropriate ellipsoid using the values in Table 1. Id
29、entify the centroid of the ellipsoid and maintain this point.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE J1052 Revised SEP2010 Page 4 of 14TABLE 1 - ELLIPSOID AXES DIMENSIONS (mm) PercentileV
30、alueSeat Track Travel(TL23)Axis Length from CentroidXAxis Length from CentroidYAxis Length from CentroidZ95th 133 mm 211.25 143.75 133.50 133 mm 246.04 166.79 151.00 133 mm 211.25 143.75 166.75 + 133.50 133 mm 211.25 143.75 143.75 + 133.50 133 mm 246.04 166.79 189.79 + 151.00 133 mm 246.04 166.79 16
31、6.79 + 151.00 133 mm 90.6 0 52.6 or = 133 mm 89.5 0 45.9 0 mm (fixed seat) 96.7 0 44.8 6.2 Locating from Vehicle Grid Alternatively, the head position contours may be located directly from vehicle grid without first locating the cyclopean eyellipse centroid. These locating equations are provided in
32、Table 5. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE J1052 Revised SEP2010 Page 6 of 14TABLE 5 - HEAD CONTOUR ELLIPSOID CENTROID RELATIVE TO VEHICLE GRID (mm) Seat Track Travel (TL23) Head El
33、lipsoid Centroid Location Greater than 0 mm X = L1 + 664 + 0.587(L6) 0.176(H30) 12.5t + XhEq. 1 Y = W20 Eq. 2 Z = H8 + 638 + H30 + ZhEq. 3 0 mm (fixed seat) X = L31 + 619 sin + XhEq. 4 Y = W20 Eq. 5 Z = H70 + 619 cos + ZhEq. 6 where = 0.689(A40) 9.09 andXhand Zhare selected from the appropriate row
34、of Table 4, L1 is the BOFRP x coordinate, L6 is the x-distance from steering wheel center to BOFRP, H30 is the z coordinate of the SgRP, measured vertically from AHP, t is transmission type (1 with clutch pedal, 0 without clutch pedal), W20 is SgRP y coordinate, H8 is AHP z coordinate, is the side v
35、iew fixed seat eyellipse angle in degrees (z-axis tipped back at the top from vertical), and A40 is the design torso angle. Determine t based on the percentage of vehicle production that has a clutch pedal. If 50% or more of anticipated production has a clutch pedal, set t=1. Otherwise, set t=0. 7.
36、ASSESSING HEAD CLEARANCE Head clearance is established as the closest distance between the head position contour and any protrusion or interior surface. This distance is measured normal (90 degrees) to the head position contour. (See Figure 4.) To accommodate the percentage of occupants represented
37、by a given percentile head position contour, there must be some space between that head position contour and the vehicle interior surfaces. Otherwise, some occupants would have their head or hair contacting a vehicle interior surface. Head clearance dimensions defined in SAE J1100 are based on side
38、and rear view sections cut normal to grid through the top of contour (the highest point on the SgRP Y-plane of a head position contour). See Figures 2 and 3. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from I
39、HS-,-,-SAE J1052 Revised SEP2010 Page 7 of 14FIGURE 1 - DEVELOPMENT IN SIDE VIEW OF HEAD POSITION CONTOUR BY SPOTTING EYE REFERENCE OF MEAN HEAD AROUND EYELLIPSE FIGURE 2 - HEAD POSITION CONTOURS FOR CLASS A VEHICLES WITH FIXED SEATS Copyright SAE International Provided by IHS under license with SAE
40、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE J1052 Revised SEP2010 Page 8 of 14FIGURE 3 - DRIVER HEAD POSITION CONTOURS FOR CLASS A VEHICLES WITH SEAT TRACK TRAVEL GREATER THAN 133 mm FIGURE 4 - MINIMUM HEAD CLEARANCE Copyright SAE International Provided by
41、IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE J1052 Revised SEP2010 Page 9 of 148. BIBLIOGRAPHY SAE J1052 MAY87 Motor Vehicle Driver and Passenger Head Position SAE J1052 APR97 Motor Vehicle Driver and Passenger Head Position SAE J10
42、52 AUG02 Motor Vehicle Driver and Passenger Head Position SAE Paper 650464 J.F. Meldrum (1965), “Automobile Driver Eye Position,” SAE Mid-Year Meeting, Chicago, IL SAE Paper 720200 D.C. Hammond and R.W. Roe (1972), “Driver Head and Eye Positions,” SAE Annual Congress, Detroit, MI SAE Paper 750356 R.
43、W. Roe (1975), “Describing the Drivers Workspace: Eye, Head, Knee, and Seat Positions,” SAE Annual Congress, Detroit, MI SAE Paper 852317 (in SAE Special Pub. 712)N.L. Philippart and T.J. Keuchenmeister (1985), “Describing the Truck Driver Workspace”, SAE Truck & Bus Meeting, Chicago, IL Lee, N.S. a
44、nd Schneider, L.W. “A Preliminary Investigation of Driver Lean in Late Model Vehicles with Bench and Bucket Seats,” UMTRI Report No. UMTRI-88-49, November 1988 (Available from UMTRI, 2901 Baxter Road, Ann Arbor, MI 48109-2150, Tel: 734-764-6504, www.umtri.umich.edu)CAESAR (Civilian American and Euro
45、pean Surface Anthropometry Resource) Final Report, November 2002 (Available from SAE at http:/store.sae.org/caesar)9. NOTES 9.1 Marginal Indicia A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have bee
46、n made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY TH
47、E SAE HUMAN ACCOMMODATIONS AND DESIGN DEVICES STANDARDS COMMITTEE Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE J1052 Revised SEP2010 Page 10 of 14APPENDIX A - DEVELOPMENT OF HEAD POSITION CONT
48、OURS A.1 PRIOR SAE J1052 HISTORICAL INFORMATION A.1.1 Driver Head Locations in Class A Vehicles Previous driver head position contours were developed using data gathered from head and eye position studies (SAE Papers 650464, 720200) and anthropometric data of the head (SAE Paper 750356). Mean top of head (including hair) and back of head (including hair) were determined relative to the eye from these studies. The mean front and side of head was determined relative to th
