1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW14617 Safety Belts, Equipment and Adjustment Copyright 2012 General Motors Company All Rights Reserved December 2012 Originating Department: North American Engineering Standards Page 1 of 37 1 Scope Note: Nothing in this standard supercedes applicab
2、le laws and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. 1.1 Purpose. To determine whether a vehicles safety belt system meets the functional operation and design requirements of: Federal Motor Vehicle Safety Stand
3、ard Number 208 (FMVSS 208). Canada Motor Vehicle Safety Standard Number 208 (CMVSS 208). 1.2 Foreword. If vehicle is equipped with air bags, see GMW14614 for equipment evaluation. Other related CMVSS 208 and FMVSS 208 requirements are found in GMW14614. 1.3 Applicability. Passenger cars, trucks, bus
4、es, and multipurpose passenger vehicles equipped with safety belt systems manufactured on or after September 1, 1991. Applicable to vehicles having a Gross Vehicle Weight Rating (GVWR) of 4545 kg (10 000 lb) or less. Although CMVSS 208 and FMVSS 208 requirements may apply, this specification was not
5、 written to evaluate the following (see FMVSS 208 for definitions): Forward Control Vehicles Open-Body Type Vehicles Vehicles Outfitted for Handicap Use 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. CMVSS 208 F
6、MVSS 208 2.2 GM Standards/Specifications. GMW14614 2.3 Additional References. Control Drawing Procedure 20452706 GM Safety Center Safety and Regulatory Affairs Legal Requirements Occupant Reference Measurements Table A6 (Appendix A) Subsystem Technical Specification (SSTS) Vehicle Owners Manual Vehi
7、cle Technical Specification (VTS) 3 Resources 3.1 Facilities. Not applicable. 3.2 Equipment. 3.2.1 Anthropomorphic test dummies representing the following: 50 th Percentile 6 Year Old Child (50% C). Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for Res
8、aleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14617 Copyright 2012 General Motors Company All Rights Reserved December 2012 Page 2 of 37 5 th Percentile Adult Female (5% F). 50 th Percentile Adult Male (50% M). 95 th Percentile Adult Ma
9、le (95% M). Note: Each dummy must be clothed in a form-fitting cotton stretch shirt with short sleeves. Arms, head or legs are removed as appropriate for the test being run. Note: Contact GM Safety Test Lab at Milford Proving Grounds in Michigan for dimensions of dummies, if required. Note: Hybrid I
10、I or Hybrid III dummies may be used for vehicles built before September 1, 1997. However, for vehicles built on or after September 1, 1997 only Hybrid III dummies are allowed. 3.2.2 Force gauges with 27 kg (60 lb) capacity. 3.2.3 Load cell, amplifier, and readout device to measure belt pressure exer
11、ted normal to and 2.54 cm (1 in) from dummies chest load cell equivalent to: R A. Denton, Incorporated, Rochester, Michigan (Model 2109). 3.2.4 Inboard reach string, 46 cm (19 1/8 in) long. 3.2.5 Outboard reach string, 74 cm (29.0 in) long if Hybrid III dummy is used. If Hybrid II dummy is used, the
12、 dimension is 71 cm (28.0 in). 3.2.6 Flexible tape measure. 3.2.7 Clearance test block, 122 cm x 20 cm x 63.5 cm (4 ft x 8 in x 25 in) with 1.27 cm (0.5 in) radius. (See FMVSS 208). 3.2.8 Webbing tension pull device as described in Appendix A, Figure A6. 3.2.9 Inclinometer or equivalent. 3.2.10 Forc
13、e gauge capable of reading outputs of 200 g (7 oz) and also a 500 g (17.5 oz) dead weight for belt contact force calibration. 3.2.11 Equipment to provide pull forces as specified in 4.3.11 Child Restraint Lockability. Note: All instrumentation is to be calibrated as required; record instrumentation
14、details and date of calibration on Data Sheet A1 (Appendix A), unless the information is otherwise preserved in the test facility records. 3.3 Test Vehicle/Test Piece. A vehicle or test-buck with appropriate: Seats Safety belts Column/wheel Doors Door trim Any and all other parts which may contact b
15、elts during occupant use Note: Ensure the safety belt anchorages and H-point locations on the test vehicle are to design intent. 3.4 Test Time. The following is an estimate on the amount of time (work-hours) needed to perform this procedure. Calendar time: 5 days Test hours: 4 hours (Technician) and
16、 8 hours (Engineer) Coordination hours: Not applicable Note: Consider prep and other downtime, actual test, and analysis of data in capturing a total calendar time. 3.5 Test Required Information. Vehicle Owners Manual (Safety Belt Section) for vehicle being tested. 3.6 Personnel/Skills. Test subject
17、s representing a 5% adult female and 95% adult male to conduct latch evaluation. 4 Procedure 4.1 Preparation. Complete vehicle and test subject identification on Data Sheet A2 (Appendix A). The Test Engineer shall determine testing position(s) of seat for Child Restraint Lockability, CMVSS 208 and F
18、MVSS Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14617 Copyright 2012 General Motors Company All Rights Reserved December 2012 Page 3
19、 of 37 208 requirements apply to all positions, however engineering judgment may obtain a “worst case“ test position. Record the seat position used in testing. 4.2 Conditions. 4.2.1 Environmental Conditions. Not applicable. 4.2.2 Test Conditions. Deviations from the requirements of this standard sha
20、ll have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 4.3 Instructions. 4.3.1 Safety Belt Installation. 4.3.1.1 Determine the type of safety belt assembly installed at each designated seating position. Record the information on Data Sh
21、eet A3 (Appendix A). 4.3.1.2 Determine the type of safety belt assembly retractor installed at each designated seating position. Record the information on Data Sheet A4 (Appendix A). 4.3.1.3 Answer the questions on Data Sheet A5 (Appendix A). 4.3.2 Safety Belt Adjustment. Note: Control Drawing Proce
22、dure 20452706 is an acceptable alternate method for demonstrating compliance to this section. 4.3.2.1 Conduct 4.3.2.2 through 4.3.2.4 for each seat/dummy/belt combination shown in Table A1 (Appendix A). 4.3.2.2 Position the test dummy as specified in Appendix A. 4.3.2.3 Adjust the seat for the dummy
23、 being used as shown in Table A2 (Appendix A). With the dummy and seat adjusted appropriately, place and adjust the safety belt as specified below: 4.3.2.3.1 Manual Safety Belt. Place the belt around the test dummy and fasten the latchplate. Adjust the belt as specified in the vehicle Owners Manual.
24、 4.3.2.3.2 Manual Belt with Tension Relieving Device. Place the belt around the test dummy and fasten the latchplate. Then introduce the maximum amount of slack into the upper torso belt that is recommended by the Owners Manual for the vehicle. 4.3.2.3.3 Passive Safety Belt. Same as above except bel
25、t is already buckled. 4.3.2.4 Is there sufficient webbing to place and fasten the seat belt around the dummy? Measure the length of webbing remaining on the retractor spool, if applicable. Record the results on Data Sheet A6 (Appendix A). 4.3.3 Belt Contact Force. (Does not apply to active or automa
26、tic seat belt assemblies that have a tension-relieving device.) 4.3.3.1 Adjust the seat and anchorages as shown in Table A3 (Appendix A). Note: If an adjustment position does not exist midway between the forward most and, rearmost positions, the closest adjustment position to the rear of the midpoin
27、t is used. 4.3.3.2 Place the 50th percentile adult male test dummy in the seat as specified in Appendix A. Close adjacent door. Fasten latch. 4.3.3.3 Calibrate the measurement equipment with a 200 g (7 oz) and 500 g (17.5 oz) dead weight or equivalent method. 4.3.3.4 Locate the centerline of the dum
28、mys chest. Mark the center of the upper torso restraint webbing where it intersects this line (Appendix A, Figure A1). Position the load cell under this point, belt pressure is to be measured normal to and 2.54 cm (1 in) from dummys chest (Appendix A, Figure A2). 4.3.3.5 From near the dummys chest p
29、ull 30 cm (12 in) of belt webbing, or the maximum amount available, whichever is less, from the retractor and then release it, allowing the webbing to return to the dummys chest. 4.3.3.6 Pull the webbing off the load cell and check if the zero adjustment is maintained. Adjust the zero setting if nec
30、essary. 4.3.3.7 Next pull, from near the dummys chest, the belt webbing 7.6 cm (3 in) from the dummys chest. Then allow the webbing to retract and gently return to the load cell. Record the force on Data Sheet A7 (Appendix A). 4.3.3.8 Repeat 4.3.3.5 through 4.3.3.7 for a total of three (3) measureme
31、nts. Determine if each measured belt contact force is 0.32 kg (0.7 lb) or less. Record the results on Data Sheet A7 (Appendix A). Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,
32、-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14617 Copyright 2012 General Motors Company All Rights Reserved December 2012 Page 4 of 37 4.3.3.9 Repeat for each seating position equipped with a Type 2 or passive safety belt assembly. 4.3.4 Upper Torso/Lap Belt Intersection Point. 4.3.4.1 Adjust the seat
33、and anchorage as shown below in Table A4 (Appendix A). 4.3.4.2 Place the 50th percentile adult male test dummy in the seat as specified in Appendix A. 4.3.4.3 Buckle belt system if disengaged. Mark the-intersection of the upper torso belt and lap belt. Locate by using the centerlines of the belt web
34、bing. 4.3.4.4 Measure the distance from the front vertical centerline of the dummy to the intersection of the upper torso belt and lap belt. Measure along the centerline of the lap belt. Record the distance on Data Sheet A8 (Appendix A). 4.3.4.5 Is the measured distance 15.0 cm (6 in) or greater? Re
35、cord the results on Data Sheet A8 (Appendix A). 4.3.4.6 Repeat 4.3.4.1 through 4.3.4.5 for each seating position with a Type 2 or passive safety belt assembly. 4.3.5 Latchplate Access (Active Systems Only). (Front out-board seating positions only). 4.3.5.1 Adjust a front outboard seat and anchorage
36、for the 50th percentile adult male test dummy as specified in Table A5 (Appendix A). 4.3.5.2 Position the 50 th percentile adult male test dummy as specified in Appendix A. 4.3.5.3 Define the inboard and outboard reach envelopes as outlined in Figure A3 or Figure A4 (Appendix A), depending on test d
37、ummy used. 4.3.5.4 Place latchplate in normal stowed position. Is the outboard latchplate within the outboard reach envelope of either the outboard arm or inboard arm? Record the findings on Data Sheet A9 (Appendix A). 4.3.5.5 Remove test dummy from seating position. 4.3.5.6 Tester shall sit in outb
38、oard seating position. Close adjacent door. 4.3.5.7 Grasp the clearance test block. Using one continuous movement, try to place it between the seat and vehicle interior in the direction of the latchplate. (Appendix A, Figure A5). 4.3.5.8 Determine if the test block can touch the latchplate or buckle
39、 with “unhindered transit,“ (see CMVSS 208 and FMVSS 208). Record the results on Data Sheet A9 (Appendix A). Consult GM Safety Center Safety and Regulatory Affairs if interpretation of “unhindered transit“ is needed. 4.3.5.9 Repeat 4.3.5.6 through 4.3.5.8 for the other front outboard seating positio
40、n. Attachment point for outboard reach string will be in symmetric location on left hand side of torso in Figure A3. (Appendix A). 4.3.6 Retraction (Active Systems Only). 4.3.6.1 Adjust drivers seat as specified previously in Table A3. 4.3.6.2 Place 50th percentile adult male dummy, with arms remove
41、d, in the drivers seat as specified in Appendix A. Do not compensate for arm weight. 4.3.6.3 Close the adjacent door. 4.3.6.4 Place and adjust the safety belt as specified below. 4.3.6.4.1 Manual Safety Belt. Place the belt around the test dummy and fasten the latchplate. Adjust the belt as specifie
42、d in the vehicle Owners Manual. 4.3.6.4.2 Manual Belt with Tension Relieving Device. Place the belt around the test dummy and fasten the latchplate. Then introduce the maximum amount of slack into the upper torso belt that is recommended by the Owners Manual for the vehicle. 4.3.6.5 Release the latc
43、hplate. Open the adjacent door. Outboard armrests may be placed in their stowed positions if the armrests must be in this position to allow an occupant to exit the vehicle. 4.3.6.6 Does the torso and lap belt webbing automatically retract to a normal stowed position? Record the results on Data Sheet
44、 A10 (Appendix A). 4.3.6.7 Close the adjacent door. 4.3.6.8 Is the webbing or any hardware pinched by closing the door? Record the results on Data Sheet A10 (Appendix A). 4.3.6.9 Repeat 4.3.6.3 through 4.3.6.8 for a total of three (3) times. 4.3.6.10 Repeat 4.3.6.1 through 4.3.6.9 for the other fron
45、t outboard seating position. 4.3.7 Latch Mechanism (Active Systems Only). Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14617 Copyright
46、 2012 General Motors Company All Rights Reserved December 2012 Page 5 of 37 4.3.7.1 Cycle the drivers seat with the safety belt unlatched. In the following sequence of movements (this is not required for non-adjustable seats, i.e., some rear seats); a. Seat full rear, lowest position. b. Seat back f
47、olded as far forward as possible. c. Seat full forward, front down, rear up. d. Seatback to nominal design position. 4.3.7.2 Have a test subject representing a 5% adult female sit in the seat. 4.3.7.3 Adjust the seat and anchorages as specified in Table A2. 4.3.7.4 Have the test subject place and ad
48、just the safety belt as specified below. 4.3.7.4.1 Manual Safety Belt. Have subject place the belt around their body and fasten the latchplate. Adjust the belt as specified in the vehicle Owners Manual. 4.3.7.4.2 Manual Belt with Tension Relieving Device. Have subject place the belt around their bod
49、y and fasten the latchplate. Then introduce the maximum amount of slack into the upper torso belt that is recommended by the Owners Manual for the vehicle. 4.3.7.5 Could the test subject grasp the latch in order to fasten the belt? Did the latch become lodged between the seat cushions? Record the results on Data Sheet A11 (Appendix A). 4.3.7.6 Release the safety belt. Could the test subject obtain access to the latch m
