| 摘要 |
<p>The crash helmet, for motor cyclists, has a visor (5) fixed to the front and a screen (6) fixed to this that covers the face of the user. The screen has the same shape as the visor and is articulated to it at the edge that is fixed to the helmet. The screen is joined to the visor by two coaxial rivets (7). The bottom of the screen is joined to the chin guard (3) by press studs (8). It can be held up against the visor by complementary press studs (9) under the visor.</p> |
