| 摘要 |
<p>A pin lock device and a helmet comprising the same are disclosed. The pin lock device comprises: a first pin portion comprising an engagement groove, in which a first stopper is projected at a bottom surface of the engagement groove; and a second pin portion comprising an engagement protrusion to be engaged with the engagement groove, in which a second stopper is projected at an end surface of the engagement protrusion and to which the first protrusion portion is fastened through a lock insertion hole formed at a shield, wherein the first pin portion and the second pin portion can rotate together when the first stopper and the second stopper are engaged to come in contact with each other in the rotation direction.</p> |
