| 摘要 |
In a helmet, a cylindrical pivot is projectingly provided on an outer surface of a mounting base secured to left and right outer sides of a cap body. A first bayonet mechanism is provided between the pivot and an end of a shield having a pivot hole fitted over the pivot, and a second bayonet mechanism is provided between the pivot and an end cover covering the end of the shield to retain it. When the end cover is pivoted to a coupling position of the second bayonet mechanism, a projection of a resilient locking arm integral with the mounting base is automatically engaged into a retaining hole in the end cover. The shield can be mounted to the cap body without use of any screws and by a simple structure.
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