Regulation 16.08 Consolidated to Supplement 3 Part 4
6.2.2.7.
In the case of buckles which incorporate a component common to two assemblies, the strength and release tests of paragraphs 7.7. and 7.8. below shall also be carried out with the part of the buckle pertaining to one assembly being engaged in the mating part pertaining to the other, if it is possible for the buckle to be so assembled in use.
6.2.3.
BELT ADJUSTING DEVICE
6.2.3.1.
The belt after being put on by the wearer, shall either adjust automatically to fit him or be such that the manually adjusting device shall be readily accessible to the seated wearer and shall be convenient and easy to use. It shall also allow the belt to be tightened with one hand to suit the wearer's body size and the position of the vehicle seat.
6.2.3.2.
Two samples of each belt adjusting device shall be tested in accordance with the requirements of paragraph
7.3. below. The strap slip shall not exceed 25 mm for each sample of adjusting device and the sum of shifts for all the adjusting devices shall not exceed 40 mm.
6.2.3.3.
All the adjustment devices shall be tested for strength as prescribed in paragraph 7.5.1. below. They shall not break or become detached under the tension set up by the prescribed load.
6.2.3.4.
When tested in accordance with paragraph 7.5.6. below the force required to operate any manually adjusting device shall not exceed 5 daN.
6.2.4.
ATTACHMENTS AND BELT ADJUSTMENT DEVICES FOR HEIGHT
The attachments shall be tested for strength as prescribed in paragraphs 7.5.1. and 7.5.2. below. The actual belt adjustment devices for height shall be tested for strength as prescribed in paragraph 7.5.2. of this Regulation where they have not been tested on the vehicle in application of UN Regulation No. 14 (in its last version of amendments) relative to anchorages of safety-belts. These parts shall not break or become detached under the tension set up by the prescribed load. .
6.2.5.
RETRACTORS
Retractors shall be subjected to tests and shall fulfil the requirements specified below, including the tests for strength prescribed in paragraphs 7.5.1. and 7.5.2. below. (These requirements are such that they exclude non-locking retractors.)
6.2.5.1.
Manually unlocking retractors
6.2.5.1.1. The strap of a safety-belt assembly equipped with a manually unlocking retractor shall not move more than 25 mm between locking positions of the retractor.
6.2.5.1.2. The strap of a safety-belt assembly shall extract from a manually unlocking retractor within 6 mm of its maximum length when a tension of not less than 1.4 daN and not more than 2.2 daN is applied to the strap in the normal direction of pull.
6.2.5.1.3. 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 to the dust test given in paragraph 7.6.3. below. 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 6.2.5.1.1. 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 shall 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. below. 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. below. 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. below, shall satisfy the conditions below. In the case of a single sensitivity, according to paragraph 2.14.4.1. of this Regulation, only the specifications regarding deceleration of the vehicle are valid.
6.2.5.3.1.1.The locking shall have occurred when the deceleration of the vehicle reaches 0.45 g5 in the case of type 4 or 0.85 g in the case of type 4N retractors.
6.2.5.3.1.2.It shall 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 shall 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 power source. However, this requirement need not be met in the case of a retractor with multiple sensitivities, provided only one sensitivity is dependent on an external signal or power source and the failure of the signal or power source is indicated to the driver by optical and/or acoustical means.
6.2.5.3.2. When tested in accordance with paragraph 7.6.2., below, an emergency locking retractor with multiple sensitivity, including strap sensitivity, shall comply with the specified requirements and also lock up when strap acceleration measured in the direction of unreeling is not less than 3.0g.
6.2.5.3.3. In the case of the tests mentioned in paragraphs 6.2.5.3.1. and 6.2.5.3.2. above the amount of strap movement which may occur before the retractor locks shall not exceed 50 mm starting at the length given in paragraph 7.6.2.1. In the case of the test mentioned in paragraph 6.2.5.3.1.2. above locking shall not occur during the 50 mm of strap movement starting at the length given in paragraph 7.6.2.1. below.
6.2.5.3.4. 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, except for a belt equipped with a tension-reducing device, in which case the minimum retracting force may be reduced to 0.05 daN only when such a device is in operation mode. If the strap passes through a guide or pulley, the retracting force shall be measured in the free length between the dummy and the guide or pulley.
If the assembly incorporates a device that upon manual or automatic operation prevents the strap from being completely retracted, such a device shall not be operated when these requirements are assessed.
If the assembly incorporates a tension-reducing device, the retracting force of the strap described in the above shall be measured with the device in operation mode and non-operation mode when these requirements are assessed before and after durability tests according to paragraph 6.2.5.3.5. below.
6.2.5.3.5. The strap shall be withdrawn from the retractor and allowed to retract repeatedly by the method described in paragraph 7.6.1. until 40,000 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 prescribed in paragraph 7.6.3. below. It shall then satisfactorily complete a further 5,000 cycles (making 45,000 in all).
If the assembly incorporates a tension-reducing device, the above tests shall be conducted on condition that the tension-reducing device is in operation mode and in non-operation mode. After the above tests, the retractor shall operate correctly and still meet the requirements of paragraphs
6.2.5.3.1., 6.2.5.3.3. and 6.2.5.3.4. above.
6.2.5.4.
Retractors shall fulfil, after durability test according to paragraph 6.2.5.3.5., and immediately after the retracting force measurement according to paragraph 6.2.5.3.4. above, all next two specifications:
6.2.5.4.1. When retractors except automatically locking retractors are tested according to paragraph 7.6.4.2. below, the retractors shall be able to avoid any slack between torso and belt, and,
6.2.5.4.2. When the buckle is unlatched to release the tongue, the retractor alone shall be able to retract strap fully.
6.2.6.
PRE-LOADING DEVICE
6.2.6.1.
After being submitted to corrosion testing in accordance with paragraph 7.2. below, the pre-loading device (including the impact sensor connected to the device by the original plugs but without any current passing through them) shall operate normally.
6.2.6.2.
It shall be verified that inadvertent operation of the device does not involve any risk of bodily injury for wearer.
6.2.6.3.
In the case of pyrotechnic pre-loading devices:
6.2.6.3.1. After being submitted to conditioning in accordance with paragraph 7.9.1. below, operation of the pre-loading device shall not have been activated by temperature and the device shall operate normally.
6.2.6.3.2. Precautions shall be taken to prevent the hot gases expelled from igniting adjacent flammable materials.
6.3.
Straps
6.3.1.
GENERAL
6.3.1.1.
The characteristics of the straps shall be such as to ensure that their pressure on the wearer's body is distributed as evenly as possible over their width and that they do not twist even under tension. They shall have energy-absorbing and energy-dispersing capacities. The straps shall have finished selvages which shall not become unravelled in use.
6.3.1.2.
The width of the strap under load of 980 daN + 100 - 0 daN shall be not less than 46 mm. This dimension shall be measured according to the test prescribed in paragraph 7.4.3. below, stopping the machine at the above mentioned load 6
6.3.2.
STRENGTH AFTER ROOM-CONDITIONING
In the case of the two straps samples conditioned in conformity with paragraph 7.4.1.1. the breaking load of the strap, determined as prescribed in paragraph 7.4.2. below, shall be not less than 1,470 daN. The difference between the breaking loads of the two samples shall not exceed 10 per cent of the greater of the breaking loads measured.
6.3.3.
STRENGTH AFTER SPECIAL CONDITIONING
In the case of the two strap samples conditioned in conformity with one of the provisions of paragraph
7.4.1. (except 7.4.1.1.) below, the breaking load of the strap shall be not less than 75 per cent of average of the loads determined in the test referred to in paragraph 6.3.2. and not less than 1,470 daN. The Technical Service conducting the tests may dispense with one or more of these tests if the composition of the material used or information already available renders the test or tests superfluous.
6.4.
Belt assembly or restraint system
6.4.1.
DYNAMIC TEST
6.4.1.1.
The belt assembly or restraint system shall be subjected to a dynamic test in conformity with paragraph
7.7. below.
6.4.1.2.
The dynamic test shall be performed on two belt assemblies which have not previously been under load, except in the case of belt assemblies forming part of restraint systems when the dynamic test shall be performed on the restraint systems intended for one group of seats which have not previously been under load. The buckles of the belt assemblies to be tested shall have met the requirements of paragraph 6.2.2.4. above. In the case of safety-belts with retractors, the retractor shall have been subjected to the dust resistance test laid down in paragraph 7.6.3.; in addition, in the case of safety-belts or restraint systems equipped with a pre-loading device comprising pyrotechnic means, the device shall have been subjected to the conditioning specified in paragraph 7.9.1. below.
6.4.1.2.1. The belts shall have undergone the corrosion test described in paragraph 7.2., after which the buckles shall be subjected to 500 additional opening and closing cycles under normal conditions of use.
6.4.1.2.2. Safety-belts with retractors shall have been subjected either to the tests described in paragraph 6.2.5.2. or to those described in paragraph 6.2.5.3. above. If, however, a retractor has already been subjected to the corrosion test in accordance with the provisions of paragraph 6.4.1.2.1. above, this test need not be repeated.
6.4.1.2.3. In the case of a belt intended for use with a belt adjustment device for height, as defined in paragraph
2.14.6. above, the test shall be carried out with the device adjusted in the most unfavourable position(s) chosen by the Technical Service responsible for testing. However:
6.4.1.2.3.1.If the belt adjustment device for height is constituted by the belt anchorage, as approved in accordance
with the provisions of UN Regulation No. 14, the Technical Service responsible for testing may, at its discretion, apply the provisions of paragraph 7.7.1. below;
6.4.1.2.3.2.If a flexible shoulder adjustment device for height is part of the belt, it shall be tested as a restraint system and the Technical Service responsible for testing shall apply the provisions under paragraph 7.7.1. that count for testing on the part of the vehicle structure to which the restraint system is normally fitted.
6.4.1.2.4. In the case of safety-belt with a preloading device the minimum displacement specified in paragraph
6.4.1.3.2. below may be reduced by half. For the purpose of this test, the preloading device shall be in operation.