| 摘要 |
Abstract Device comprising an adjustable head band for a 5 protective helmet A device with an adjustable head band for a protective helmet is to be improved in such a way that it comprises 10 fewer components and is easy to assemble. To meet this object the adjustment device features an adjustment wheel (12), which comprises an adjustment disk (15), a retaining disk (14) and a ring gear (16) between the adjustment disk (15) and the retaining disk (14), in 15 which the ends (2, 4) of the head band are accepted in slots (7, 9) from opposite directions, extend between the adjustment disk (15) and the retaining disk (14) and that the series of teeth (3, 5) at the ends (2, 4) of the head band engage with ring gear (16). The adjustment wheel 20 (12) in this arrangement is rotatably attached to guide member (6), which also has the slots (7, 9). (Figure 1) Fig. I Fig. 2 |
