SCOPE a Vehicles of Categories M and N with regard to their anchorages for safety-belts intended for adult occupants of forward-facing or rearward-facing or side-facing seats. Vehicles of any category with regard to their i-Size seating positions, if any are defined by the vehicle manufacturer. Vertical displacement; 2. Angular displacement; 2.
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Each sample submitted in conformity with Paragraphs 3. The belt or the restraint system shall be so designed and constructed that, when correctly installed and properly used by an occupant, its satisfactory operation is assured and it reduces the risk of bodily injury in the event of an accident.
The straps of the belt shall not be liable to assume a dangerous configuration. The use of materials with properties of polyamide 6 as regards water retention is prohibited in all mechanical parts for which such a phenomenon is likely to have an adverse effect on their operation. The buckle when tested in accordance with Paragraph 7. The buckle shall be capable of withstanding repeated operation and, prior to the dynamic test specified in Paragraph 7.
In the case of harness belt buckles, this test may be carried out without all the tongues being introduced. The force required to open the buckle in the test as prescribed in Paragraph 7. The buckle shall be tested for strength as prescribed in Paragraphs 7. It must not break, be seriously distorted or become detached under the tension set up by the prescribed load.
In the case of buckles which incorporate a component common to two assemblies, the strength and release tests of Paragraphs 7. Belt Adjusting Device 6. 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.
Two samples of each belt adjusting device shall be tested in accordance with the requirements of Paragraph 7. The strap slip shall not exceed 25mm for each sample of adjusting device and the sum of shifts for all the adjusting devices shall not exceed 40mm. All the adjustment devices shall be tested for strength as prescribed in Paragraph 7.
They shall not break or become detached under the tension set up by the prescribed load. When tested in accordance with Paragraph 7.
Attachments and Belt Adjustment Devices for Height 6. Retractors The attachments shall be tested for strength as prescribed in Paragraphs 7.
The actual belt adjustment devices for height shall be tested for strength as prescribed in Paragraph 7. These parts shall not break or become detached under the tension set up by the prescribed load. Retractors shall be subjected to tests and shall fulfil the requirements specified below, including the tests for strength prescribed in Paragraphs 7. These requirements are such that they exclude non-locking retractors.
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. In the case of the tests mentioned in Paragraphs 6. In the case of the test mentioned in Paragraph 6.
If the retractor is part of a lap belt, the retracting force of the strap shall be not less than 0. If the retractor is part of an upper torso restraint, the retracting force of the strap shall be not less than 0. 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. This dimension shall be measured according to the test prescribed in Paragraph 7. Strength after Room-conditioning In the case of the two straps samples conditioned in conformity with Paragraph 7.
Strength after Special Conditioning In the case of the two strap samples conditioned in conformity with one of the provisions of Paragraph 7. 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. Belt Assembly or Restraint System 6. Dynamic Test 6. The belt assembly or restraint system shall be subjected to a dynamic test in conformity with Paragraph 7.
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. In the case of safety-belts with retractors, the retractor shall have been subjected to the dust resistance test laid down in Paragraph 7.
The belts shall have undergone the corrosion test described in Paragraph 7. Safety-belts with retractors shall have been subjected either to the tests described in Paragraph 6.
If however, a retractor has already been subjected to the corrosion test in accordance with the provisions of Paragraph 6.
In the case of a restraint system: 6. The movement of the chest reference point may exceed that specified in Paragraph 6. In the case of the driver, contact of the chest with the steering assembly would be allowed, if the latter meets the requirements of UN Regulation No. For this assessment the seat shall be considered to be in the positions specified in Paragraph 7.
In the case of any other occupant, contact of the head or of the chest with any rigid part of the vehicle in front of the manikin is not allowed. Additionally contact of the manikins head with its knees is not allowed.
For this assessment the seat of the tested manikin and, if applicable, the seat in front of the manikin shall be considered to be in the positions specified in Paragraph 7. With the exception of the deployed structure of an airbag assembly defined in Paragraph 2. In vehicles where such devices are used, the displacement and locking systems enabling the occupants of all seats to leave the vehicle shall still be operable by hand after the dynamic test.
By way of derogation, in case of a restraint system, the displacements may be greater than those specified in Paragraph 6. Strength after Abrasion Conditioning 6. For both samples conditioned in compliance with Paragraph 7. For Type 1 and Type 2 procedures, the breaking strength test shall be carried out on strap samples only Paragraph 7.
For Type 3 procedure, the breaking strength test shall be carried out on the strap in combination with the metal component involved Paragraph 7. It shall be ensured that the free section of the adjusting device points either up or down on the test bench, as in the vehicle. A 5daN load shall be attached to the lower end of the section of strap. If there is a free end serving as reserve strap, it must in no way be fastened or clipped to the section under load.
It shall be ensured that on the test bench the strap, in the slack position, descends in a concave curve from the adjusting device, as in the vehicle. The 5daN load applied on the test bench shall be guided vertically in such a way as to prevent the load swaying and the belt twisting. The attachment shall be fixed to the 5daN load as in the vehicle. Before the actual start of the test, a series of 20 cycles shall be completed so that the self-tightening system settles properly.
Conditioning of Straps and Breaking-strength Test Static 7. Conditioning of Straps for the Breaking-strength Test Samples cut from the strap referred to in Paragraph 3. If the test is not carried out immediately after conditioning, the specimen shall be placed in a hermetically-closed receptacle until the test begins.
The breaking load shall be determined within 5min after removal of the strap from the conditioning atmosphere or from the receptacle. Light-conditioning 7.
The strap shall be exposed to light for the time necessary to produce a contrast equal to Grade 4 on the grey scale on Standard Blue Dye No. After exposure the strap shall be conditioned as described under Paragraph 7. If the test is not carried out immediately after conditioning the specimen shall be placed in a hermetically-closed receptacle until the test begins. The breaking load shall be determined within 5min after removal of the strap from the conditioning installation.
In the Table below are listed the general conditions for each abrasion procedure. Load daN.