1、_ 6$(7HFKQLFDO6WDQGDUGV%RDUG5XOHVSURYLGHWKDW7KLVreport 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 therefrom, is t
2、he sROHUHVSRQVLELOLWRIWKHXVHU SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2014 SAE International All rights reserved. No part of this publication may be
3、 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 USA) F
4、ax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J1834_201401 SURFACE VEHICLE RECOMMENDED PRACTICE J1834 JAN2014 Issued 1991-06 Revised 2014-01 Sup
5、erseding J1834 OCT2007 Seat Belt Comfort, Fit, and Convenience - Truck and Bus RATIONALE This revision incorporates information from FMVSS 208, corrects errors and updates references to the final Department of Transportation (DOT) document designation and title. 1. SCOPE This SAE Recommended Practic
6、e provides design, test, and performance guidelines on the comfort, fit, and convenience for active restraint systems for heavy trucks and multipurpose passenger vehicle applications over 10 000 lbs gross vehicle weight rating (GVWR). The information pertains to the forward facing seating positions.
7、 1.1 Purpose The purpose of this document is to provide the engineer with general reference considerations for the design of active restraint systems that are comfortable and convenient to use for heavy truck and multipurpose passenger vehicle applications. The intent of this practice is to present
8、a logical process by which the engineer and designer may evaluate restraint system designs, regarding comfort, fit, and convenience. 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the lat
9、est issue of SAE publications shall 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 J826 Devices for Use in Defining and Measuring Vehicle Seat
10、ing Accommodation SAE J833 Human Physical Dimensions SAE J1516 Accommodation Tool Reference Point SAE J1522 Truck Driver Stomach Position SAE INTERNATIONAL J1834 Revised JAN2014 Page 2 of 9 2.1.2 Government Publications Federal Motor Vehicle Safety Standards (FMVSS) are available from the Superinten
11、dent of Documents, U.S. Government Printing Office, Mail Stop: SSOP, Washington, DC 20402-9320. FMVSS 101 Controls and Displays FMVSS 105 Hydraulic Brake Systems FMVSS 121 Air Brake Systems FMVSS 208 Occupant Crash Protection FMVSS 209 Seat Belt Assemblies FMVSS 210 Seat Belt Assembly Anchorages 2.2
12、 Related Publications The following publications are provided for information purposes only and are not a required part of this SAE Technical Report. 2.2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada)
13、or 724-776-4970 (outside USA), www.sae.org. SAE J140 Seat Belt Hardware Test Procedure SAE J339 Seat Belt Assembly Webbing Abrasion Test Procedure SAE J383 Motor Vehicle Seat Belt Anchorages - Design Recommendation SAE J384 Motor Vehicle Seat Belt Anchorages - Test Procedure SAE J385 Motor Vehicle S
14、eat Belt Anchorages - Performance Requirements SAE J800 Motor Vehicle Seat Belt Assembly Installation 2.2.2 Other Publications HS-801 277 Sources and Remedies for Restraint Systems Discomfort and Inconvenience DOT-HS-805-597 Comfort and Convenience Specifications for Safety Belts: Shoulder Belt Fit,
15、 Pressure and Pull Out Forces DOT-HS-803-887 An Examination of the Comfort and Convenience of 1979 Safety Belt Systems SAE INTERNATIONAL J1834 Revised JAN2014 Page 3 of 9 3. DEFINITIONS 3.1 ACCOMMODATION TOOL REFERENCE POINT A two-dimensional side view line which defines a horizontal reference point
16、 as a function of H-point height to which stomach contours can be located in vehicle space. Three different lines are provided to accommodate truck driver populations with male/female ratios of 50/50, 75/25, and 90/10 to 95/5 (SAE J1516 and SAE J1522). 3.2 ACTIVE RESTRAINT BELT SYSTEM A belt system
17、that requires action (i.e., donning/doffing) by the vehicle occupant. 3.3 ADJUSTMENT HARDWARE All hardware designed to adjust the length of the seat belt assembly to fit the user, including such hardware that may be integral with a buckle, attachment hardware, or retractor. 3.4 ANCHORAGE The final p
18、oint of attachment for transferring seat belt assembly loads to the vehicle structure. 3.5 ATTACHMENT HARDWARE All hardware designed for securing the webbing of a seat belt assembly to a motor vehicle at the anchorage. 3.6 AUTOMATIC LOCKING RETRACTOR (ALR) A retractor incorporating adjustment by mea
19、ns of a positive self-locking mechanism which is capable when locked of withstanding restraint forces. 3.7 BUCKLE A quick-release mechanism which fastens a person in a seat belt assembly. 3.8 D-RING A load-bearing device, through which safety belt webbing passes, which controls belt routing and supp
20、ort for the occupants upper torso. 3.9 DOFFING The act of removing and storing a seat belt assembly from the occupant. 3.10 DONNING The act of positioning a seat belt assembly on the occupant. 3.11 EGRESS The act of exiting (a vehicle). 3.12 EMERGENCY LOCKING RETRACTOR (ELR) A retractor incorporatin
21、g adjustment hardware by means of a locking mechanism that is activated by vehicle acceleration, webbing movement relative to the vehicle, or other automatic action during an emergency, and is capable, when locked, of withstanding restraint forces. SAE INTERNATIONAL J1834 Revised JAN2014 Page 4 of 9
22、 3.13 H-POINT The H-point is the pivot center of the torso and thigh on the two- or three-dimensional devices used in defining and measuring vehicle seating accommodation (see SAE J826). 3.14 HARDWARE Any metal or rigid plastic part of the seat belt assembly. 3.15 INGRESS The act of entering (a vehi
23、cle). 3.16 INTERMEDIATE CONNECTING POINT (ICP) A seat belt attachment point which may be located on the seat upper structure to provide additional comfort and convenience with some seat belt systems which use tether belts (see 5.8.) 3.17 LATCH PLATE (Tongue) Metal part of the latch which is usually
24、connected to the webbing and inserts into the buckle end of the seat belt assembly. 3.18 PELVIC RESTRAINT A seat belt assembly, or portion thereof, intended to restrain movement of the pelvis. 3.19 RETRACTOR A device for storing part or all of the webbing of the seat belt assembly. 3.20 SEAT BELT AS
25、SEMBLY Any strap, webbing, or similar device designed to secure a person in a motor vehicle with the intention of mitigating the results of a collision, including all buckles and other fasteners and all hardware designed for installing the assembly in a motor vehicle. 3.21 Seating Reference Point (S
26、RP) The manufacturers design reference point is a unique design H-point which: a. Establishes the rearmost normal design driving or riding position of each designated seating position, which includes consideration of all modes of adjustment, horizontal, vertical, and tilt, in a vehicle b. Has X, Y,
27、Z coordinates established relative to the designed vehicle structure c. Simulates the position of the pivot center of the human torso and thigh d. Is the reference point employed to position the two-dimensional drafting template with the 95th percentile leg described in SAE J826 3.22 SEAT SYSTEM The
28、 structure necessary to accommodate a person in a designated seating position. Such structure may include, but is not limited to, cushions, headrests, adjustment devices for height, tilt and fore and aft location, mounts, supports, and suspension system. SAE INTERNATIONAL J1834 Revised JAN2014 Page
29、5 of 9 3.23 STRAP Nonwoven material used in a seat belt assembly in place of webbing. 3.24 TETHER BELT Any strap, belt, or device (webbing, wire cable, solid line, etc.) that aids in the transfer of the seat and seat belt loads to the anchorage. 3.25 TYPE I SEAT BELT ASSEMBLY A lap belt for pelvic r
30、estraint. 3.26 TYPE II SEAT BELT ASSEMBLY A combination of pelvic and upper torso restraints. 3.27 UPPER TORSO RESTRAINT A portion of a seat belt assembly intended to restrain movement of the chest and shoulder regions. 3.28 WEBBING A narrow fabric woven with continuous filling yarns and finished sa
31、lvages. 3.29 WEBBING TENSION RELIEVING DEVICE A mechanism designed for relieving or eliminating shoulder restraint tension. 4. SEAT BELT ASSEMBLY REQUIREMENTS 4.1 The vehicle shall, at each designated seating position, have either a Type I or a Type II seat belt assembly that conforms to FMVSS 209.
32、Type II seat belt assemblies are preferred for forward facing, outboard seating positions. 4.2 All Type I and Type II belt assemblies mounted in the forward facing outboard seating positions shall utilize either an emergency locking or an automatic locking retractor. Single retractor Type II systems
33、 or the upper torso portion of two retractor Type II systems shall utilize an emergency locking retractor. Emergency locking retractors should also be selected to minimize undesirable lockup and cinching during rough ride conditions. Automatic locking retractors should also be the anti-cinching type
34、. 4.3 An automatic locking retractor used at a front outboard seating position that has some type of suspension system for the seat, shall be attached to the seat structure that moves as the suspension system functions. 4.4 Adjustment The seat belt system should accommodate the truck driver stomach
35、of the anticipated driver population mix as defined in SAE J1522. One method of complying with this requirement will be considered met if the seat belt assembly can be properly fitted to an adult male using the 95th percentile values from SAE J833 located in the vehicle with its H-point on a horizon
36、tal line through the accommodation tool reference point (SAE J1516), and with the whole of the truck driver stomach contour (SAE J1522) encompassed within the manikin stomach outline. The manikin torso angle is to be at the design nominal position and the seat in the rearmost-position. (The objectiv
37、e of the compliance statement is to get a test that can be performed with the currently available manikin, i.e., without the need for an all new SAE/Teamsters manikin.) See attached sketch, Figure 1. SAE INTERNATIONAL J1834 Revised JAN2014 Page 6 of 9 SpecLDOWYHKLFOHVLQWHQGHGWREHRSHUDWHGESHUVRQQHOZH
38、DULQJKHDYFORWKLQJ LHILUHILJKWHUVKDPDWFUHZVHWF should provide belt length sufficient to accommodate the extra bulk of the heavy clothing and protective gear. 4.4.1 A seat belt assembly installed in any designated seating position other than the outboard forward facing seating position shall adjust ei
39、ther by an automatic locking retractor, emergency locking retractor, or manual adjusting device that conforms to FMVSS 209. 4.5 Extension The upper torso portion of the seat belt system shall provide sufficient extension capability to allow all drivers (5th percentile female to 95th percentile male
40、values from SAE J833) while wearing the restraint system to: a. Reach and operate all controls and displays as required by FMVSS 101, 105, 121, and 208 b. Make the full range of steering wheel movement in a manner that will not adversely affect the drivers ability to maintain control of the vehicle
41、during normal and evasive maneuvers Specialty vehicles intended to be operated by personnel wearing heavy clothing (i.e. fire fighters, hazmat crews, etc.) should provide belt length sufficient to accommodate the extra bulk of the heavy clothing and protective gear. 4.6 Latch Mechanism A seat belt a
42、ssembly shall have a latch mechanism: a. Whose components are accessible to a seated occupant in both the stowed and operational positions b. That releases both the upper torso restraint and the lap belt simultaneously, if the assembly has a lap belt and an upper torso restraint that require unlatch
43、ing for release of the occupant c. That releases at a single point by push button action SAE INTERNATIONAL J1834 Revised JAN2014 Page 7 of 9 FIGURE 1 - STOMACH CONTOUR SAE INTERNATIONAL J1834 Revised JAN2014 Page 8 of 9 5. VEHICLE RELATED REQUIREMENTS 5.1 Seat Belt Guides and Hardware Any manual sea
44、t belt assembly whose webbing is designed to pass through the seat cushion or between the seat cushion and seat back shall be designed to maintain one of the following three seat belt parts (the seat belt latch plate, the buckle, or the seat belt webbing) on top of or above the seat cushion under no
45、rmal conditions (i.e., conditions other than when belt hardware is intentionally pushed behind the seat by a vehicle occupant). In addition, the remaining two seat belt parts must be accessible under normal conditions. 5.2 Buckle Positioning and Access On all outboard seating positions, the buckle s
46、hould be located to the inboard side of the vehicle and should be positioned so the latch plate entry is readily accessible to the occupant. As a guide, the latch plate entry should be no higher than the H-point of the seat. A device shall be provided for the inboard buckle strap to allow the buckle
47、 to be readily accessible for one-hand donning. The device shall be so designed that it has sufficient lateral flexibility so that a passenger passing over it can gain access to a center seat position without undue interference or discomfort. 5.3 Latch Plate Positioning and Access 2QDOORXWERDUGVHDWL
48、QJSRVLWLRQVWKHODWFKSODWHVKRXOGEHORFDWHGZLWKLQDUPVUHDFKWREHUHDGLODFFHVVLEOHWRWKHwearer. 5.4 Upper Torso Belt Positioning The upper torso D-ring mounting position on a Type II seat belt system shall be selected to provide a belt crossing angle on the chest envelope of a 5th percentile adult female to 95th percentile adult male per SAE J833 which provides
