| 摘要 |
A helmet fastening system for protective helmets includes a drawstring system which holds the helmet smoothly to the head of the wearer in the forehead and temple areas and in the neck area simply by tightening only a chin strap. Two drawstring loops are movably arranged in an integrated guiding channel which comprises a leather pocket parallel to and attached to the helmet rim. The length-adjustable chin strap form a closed drawstring system outside the guiding channel. The tightening of the chin strap leads to the spreading of the force between the chin strap, and two chin strap loops of the drawstring system so that the protective helmet and the leather pockets forming the guiding channels fit tightly in the neck and forehead areas of the wearer. A slipping of the protective helment even under the influence of external force is substantially impossible.
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