| 摘要 |
Webbing to hold a crash helmet on the head comprises a chin strap formed by front and rear webbing joined in a central part, with left and right portions of each webbing joined by convergence points connected together and fixed to the helmet. The crash helmet (1) is made from an external main shell (2) and has a set of flexible webbing for fixing it on the user's head. A chin strap (11) is formed by front (12) and rear (13) webbing which are joined in their central part. The front webbing is formed by left (12a) and right (12b) portions and the rear webbing from left (13a) and right (13b) portions. The left portions and the right portions are joined by convergence points which are connected together to be fixed on the helmet. The chin strap has an automatically connecting and disconnecting buckle located at the convergence point of the front webbing left portion with the left portion of the rear webbing.
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