| 摘要 |
<p>Provided are a pin lock apparatus and a helmet including the same. The pin lock apparatus includes a first pin unit having an engagement groove and a first stopper protruding on a bottom surface of the engagement groove, and a second pin unit having an engagement protrusion engaged with the engagement groove and a second stopper protruding on an end surface of the engagement protrusion, the second pin unit being coupled to the first pin unit through a lock fitting groove formed in the shield. The first pin unit and the second pin unit can rotate together when the first stopper and the second stopper contact each other by engagement with respect to a rotation direction.</p> |
