Document ID: chunk:federal_register_of_legislation:F2012C00357:front:0:p19
Version: federal_register_of_legislation:F2012C00357
Segment Type: other
Provision Reference: 
Character Range: 52172–55049

retractor shall operate correctly and still meet the requirements of paragraphs 6.2.5.1.1. and 6.2.5.1.2. above.

           6.2.5.2. Automatically locking retractors

           6.2.5.2.1. The strap of a safety‑belt assembly equipped with an automatically locking retractor shall not move more than 30 mm between locking positions of the retractor.  After a rearward movement of the wearer, the belt must either remain at its initial position or return to that position automatically on subsequent forward movements of the wearer.

           6.2.5.2.2. If the retractor is part of a lap belt, the retracting force of the strap shall be not less than 0.7 daN when measured in the free length between the dummy and the retractor in accordance with paragraph 7.6.4.

            If the retractor is part of an upper torso restraint, the retracting force of the strap shall be not less than 0.1 daN and not more than 0.7 daN when similarly measured.

           6.2.5.2.3. The strap shall be withdrawn from the retractor and allowed to retract repeatedly by the method described in paragraph 7.6.1. until 5,000 cycles have been completed.  The retractor shall then be subjected to the corrosion test given in paragraph 7.2. and after that to the dust test given in paragraph 7.6.3.  It shall then satisfactorily complete a further 5,000 cycles of withdrawal and retraction.  After the above tests the retractor shall operate correctly and still meet the requirements of paragraphs 6.2.5.2.1. and 6.2.5.2.2. above.

6.2.5.3. Emergency locking retractors

           6.2.5.3.1. An emergency locking retractor, when tested in accordance with paragraph 7.6.2., shall satisfy the conditions below.  In the case of a single sensitivity, according to paragraph 2.14.4.1., only the specifications regarding deceleration of the vehicle are valid.

           6.2.5.3.1.1. The locking must have occurred when the deceleration of the vehicle reaches 0.45 g 3[/ in the case of type 4 or 0.85 g in the case of type 4N retractors.
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           6.2.5.3.1.2. It must not lock for values of acceleration of the strap measured in the direction of the extraction of the strap of less than 0.8 g in the case of type 4 or less than 1.0 g in the case of type 4N retractors.

           6.2.5.3.1.3. It must not lock when its sensing device is tilted 12° or less in any direction from the installation position specified by its manufacturer.

           6.2.5.3.1.4. It shall lock when its sensing device is tilted by more than 27° in the case of type 4 or 40° in the case of type 4N retractors in any direction from the installation position specified by its manufacturer.

           6.2.5.3.1.5. In cases where the operation of a retractor depends on an external signal or power source, the design shall ensure that the retractor locks automatically upon failure or interruption of that signal or