Patent ID: 7604269

Claim:
An impact absorbing device comprising: an attachment component, the attachment component having an attachment component upper part, an attachment component bottom part and an attachment component interior side wall part, the attachment component upper part and the attachment component bottom part having an opening respectively, the attachment component interior side wall part having one or more holes, the attachment component side wall part connecting both openings; an impact absorption pipe arranged so that the impact absorption pipe can slide axially and coaxially within the attachment component, the impact absorption pipe having an impact absorption pipe upper part, an impact absorption pipe bottom part and an impact absorption pipe side wall part, with the impact absorption pipe bottom part having a flange which projects towards the exterior, the impact absorption pipe side wall part absorbing external impacts and having a concave recessed part arranged on the exterior of the impact absorption pipe side wall part, and at least the upper side of the concave recessed part slanting from the upper side to the lower side of the impact absorption pipe; one or more movable resistance bodies arranged so that the one or more movable resistance bodies can move freely within the one or more holes, the one or more movable resistance bodies being formed of a harder material than that of the impact absorption pipe side wall part; an impact absorption pipe movement component support component arranged on the interior side of the impact absorption pipe; an impact absorption pipe movement component arranged between the impact absorption pipe upper part and the impact absorption pipe movement component support component, with the impact absorption pipe movement component providing an energization power to the impact absorption pipe; a support part movably arranged within the attachment component, the support part having a support part upper part and a support part side wall part, the support part upper part having a flange which projects towards the exterior, the support part side wall part having a first section and a second section formed in this order so that a distance between each of the sections and an interior side wall of the attachment component becomes smaller respectively, the first section being in a position which is above the second section, the first section being in a position which faces the one or more holes of the attachment component when the support part comes into contact with the attachment component bottom part; and a support part movement component which provides an energization power to the support part, the support part movement component being arranged between the support part upper part flange and the attachment component bottom part.