| 摘要 |
Device serving to adjust the tension in seat belts for cars characterised in that it includes a casing 1 having two lateral slits 4 which are guides for the spindle of a roller 2. These slits 4, having the width of the diameter of the spindle of the roller 2 are produced in the shape of a circular arc of a radius of 250 mm and are positioned face to face on the longitudinal lateral parts of the casing 1. On the centre of these slits 4 there are two notches 12 stabilising the roller 2 on the large radius towards the part closest to the cover 8. The circular arc-shaped slit 4 allows the roller 3 to lock in the centre and to be released at the ends (top and bottom). <IMAGE>
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