Document ID: chunk:federal_register_of_legislation:F2012C00357:front:0:p17
Version: federal_register_of_legislation:F2012C00357
Segment Type: other
Provision Reference: 
Character Range: 47126–49761

daN.  The buckle shall be easy to use and to grasp; when it is not under tension and when under the tension specified in paragraph 7.8.2. below, it shall be capable of being released by the wearer with a single simple movement of one hand in one direction; in addition, in the case of belt assemblies intended to be used for the front outboard seats, except in these harness belts, it shall also be capable of being engaged by the wearer with a simple movement of one hand in one direction.  The buckle shall be released by pressing either a button or a similar device.  The surface to which this pressure is applied shall have the following dimensions, with the button in the actual release position and when projected into a plane perpendicular to the button's initial direction of motion:  for enclosed buttons, an area of not less than 4.5 cm2 and a width of not less than 15 mm; for non‑enclosed buttons, an area of not less than 2.5 cm2 and a width of not less than 10 mm.  The buckle release area shall be coloured red.  No other part of the buckle shall be of this colour.

           6.2.2.3. The buckle, when tested in accordance with paragraph 7.5.3. below, shall operate normally.

           6.2.2.4. The buckle shall be capable of withstanding repeated operation and, prior to the dynamic test specified in paragraph 7.7. shall undergo 5,000 opening and closing cycles under normal conditions of use.  In the case of harness belt buckles, this test may be carried out without all the tongues being introduced.

           6.2.2.5. The force required to open the buckle in the test as prescribed in paragraph 7.8. below shall not exceed 6 daN.

           6.2.2.6. The buckle shall be tested for strength as prescribed in paragraphs 7.5.1. and, where appropriate, 7.5.5.  It must not break, be seriously distorted or become detached under the tension set up by the prescribed load.

           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. 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