Multi-layer safety helmet

Abstract

Provided is an improved multi-layer safety helmet comprising: a lower buffer portion worn on the user's head; and an upper buffer portion coupled to an upper portion of the lower buffer portion, wherein an impact applied from the outside is firstly absorbed by the upper buffer portion and is secondly absorbed by the lower buffer portion.

1 . An improved multi-layer safety helmet comprising:
 a lower buffer portion worn on the user's head; and   an upper buffer portion coupled to an upper portion of the lower buffer portion,   wherein an impact applied from the outside is firstly absorbed by the upper buffer portion and is secondly absorbed by the lower buffer portion,   wherein a lower slot and an upper slot are formed in the lower buffer portion and the upper buffer portion, respectively, such that the lower slot and the upper slot vertically extend to form a vent and are coupled to each other,   wherein a plurality of lower coupling portions protruding are formed on an upper surface of the lower buffer portion, a level down portion is formed between the plurality of lower coupling portions, and a plurality of hollows are perforated in the level down portion to form a vertical vent that discharges heat generated from a user's head and introducing fresh air from the outside,   wherein a plurality of protruding upper coupling portions are formed on the lower surface of the upper buffer portion, and a level down portion is formed between the plurality of upper coupling portions,   wherein the lower slot and the upper slot extend vertically to form a ventilation hole through coupling of the lower buffer portion and the upper buffer portion,   wherein a level-down lower horizontal vent is formed in the lower coupling portion, and a level-down upper horizontal vent is also formed in the upper coupling portion, such that when the lower coupling portion and the upper coupling portion are coupled to each other, the lower horizontal vent and the upper horizontal vent are coupled to each other from the top and bottom at the same position to form one large vent, and   wherein the upper buffer portion which is an outermost layer firstly absorbs an impact energy of an impact applied from the outside, a buffer space formed by the level down portions disperses the impact energy, and the lower buffer portion which is an inner layer secondly absorbs a remaining impact energy that does not disperse.   
     
     
         2 . The improved multi-layer safety helmet according to  claim 1 ,
 wherein a frame is integrally bonded and coupled around front and side surfaces of the lower buffer portion, and   wherein a frame is integrally bonded to an upper surface of the upper buffer portion.