Importance

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Abstract

A foldable helmet according to the present invention is a foldable helmet having a plurality of helmet fragments connected to each other to be rotatable about a common shaft and having a cap shape when the plurality of helmet fragments are unfolded in a stepped fashion. Each of the plurality of helmet fragments includes a slide-type connection means for connecting the inner peripheral surface of one helmet fragment to the outer peripheral surface of another helmet fragment inwardly adjacent thereto, along the circumferential direction, such that the unfolding is easy and the shape thereof is stably maintained at the time of the unfolding. According to the present invention, the plurality of helmet fragments are easily unfolded and folded. Therefore, when not in use, a user can fold the helmet fragments in a sliding fashion so that the size of the foldable helmet can be significantly reduced, thereby making the foldable helmet easy to carry and store. Further, while using the foldable helmet, a user wears the complete helmet formed by unfolding the helmet fragments, thereby sufficiently protecting the head of the user in a dangerous environment. According to the present invention, the plurality of helmet fragments can be easily unfolded and folded to allow a user to fold the helmet fragments in a sliding fashion, thereby significantly reducing the size of the foldable helmet, when the helmet is not in use. Therefore, the foldable helmet is easy to carry and store. Further, when using the foldable helmet, a user can sufficiently protect the head of the user even in a dangerous environment by wearing the complete helmet formed by unfolding the helmet fragments.

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First Claim