A connector for connecting the inner shell and the outer shell of the helmet such that the inner shell and the outer shell are slidable relative to each other, the connector comprising: a first attachment part attached to any one of the inner shell and the outer shell; A second attachment part attached to the other of the inner shell and the outer shell; And one or more elastic structures extending between the first attachment part and the second attachment part, wherein the one or more elastic structures connect the first attachment part and the second attachment part, such that when the elastic structures are deformed, Includes; enables relative movement of the first attachment part relative to the second attachment part, wherein the resilient structures include at least one angled portion between the first attachment part and the second attachment part, The angle of the angled portion is changed to allow a relative movement between the first attachment part and the second attachment part.
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