Document ID: chunk:federal_register_of_legislation:F2006L02678:body:0:p12
Version: federal_register_of_legislation:F2006L02678
Segment Type: other
Provision Reference: 
Character Range: 34078–37098

requirements of this clause shall not apply to relative movement between the 'Strap' and the retractor, at the retractor.
4.5.3.                              Buckle-Spring Fatigue Resistance
4.5.3.1.                        In the case where a spring is incorporated in the unlatching mechanism of a buckle, the load required to operate the spring shall not be reduced by more than 20% after the spring has been subjected to 50,000 operations each involving a movement not less than 95% of the design movement for buckle unlatching.
4.6.                                    RETRACTORS (other than 'Type 4N Retractors', for which see Appendix A).
4.6.1.                              All retractors incorporated in 'Seatbelt Assemblies' shall comply with the requirements of clause 4.6.2 and either clause 4.6.3 or 4.6.4.
4.6.2.                              General Requirements for Retractors
4.6.2.1.                        After being subjected to the retractor durability test of clause 4.8, the retractor shall:
4.6.2.1.1.                  when locked, either:
4.6.2.1.1.1.            withstand a tensile load of not less than 9 kN applied to the 'Strap'; or
4.6.2.1.1.2.            be subjected to the strength of assembly test of clause 14.1 of AS 2596-1983 "Seatbelt Assemblies for Motor Vehicles".
4.6.2.1.2.                  withstand a tensile load of not less than 9 kN applied to the 'Strap'.  For the purpose of this test the 'Strap' shall be fully withdrawn and the locking mechanism shall be rendered inoperative.
4.6.2.2.                        In cases where the retracting 'Strap' of a 'Lap-Sash Belt' is the torso 'Strap', the retraction force in the 'Strap' before and after the retractor has been subjected to the retractor durability test of clause 4.8, shall be not less than 2 N nor more than l0 N, under the following test conditions:
4.6.2.2.1.                  the 'Sash Guide' system and the retractor shall be in the design configuration.  In the case of a 'Sash Guide' system with an adjustable 'Sash Guide' the retractor shall be capable of meeting the requirements of this clause with the 'Sash Location Point' set in any position of adjustment;
4.6.2.2.2.                  the part of the test 'Strap' which simulates the torso 'Strap' shall be withdrawn through the 'Sash Guide' system until it is within 430 mm of its fully extended condition;
4.6.2.2.3.                  the 'Strap' shall be allowed to retract until a point on the 'Strap' is 450 + 20 mm, measured along the 'Strap' from its position when the 'Strap' is fully extended. It shall then be held stationary at this extension by a force applied in a downward direction at 20 +10° to the vertical in a vertical plane which is at 35 +10° to a longitudinal plane when viewed in plan, and shall not be withdrawn again until the retracting force has been determined;
4.6.2.2.4.                  the retraction force shall be measured in the test 'Strap' 'Forward' of the point where it would contact  the first 'Sash Guide' device